# ATmega328P Industrial PLC Controller ## Description 24 VDC industrial PLC-style controller using ATmega328P with 8 configurable IEC 61131-2 Type 1 isolated digital inputs, 6 isolated sinking transistor outputs, isolated RS-485, and onboard ICSP programming. ## Project Details - **Owner:** khadyevinayak89 - **Created:** 8/24/2026 - **Last Updated:** 8/24/2026 - **Visibility:** Public - **Connectivity:** WiFi - **Power Requirements:** USB-C - **Domain:** Consumer IoT - **Operating Voltage:** 5V - **Connectivity:** Bluetooth ## Key Components ### D1 — SS36-E3/9AT - Role Details: 60 V 3 A Schottky reverse-polarity diode - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/aa5b397595a63cacedf45d8395c0577ce104a2cb2165c128dd83dcbb50414147.pdf - Manufacturer Name: Vishay General Semiconductor - Diodes Division - Manufacturer Part Number: SS36-E3/9AT - Functional Group: Field Power and Protection - Role: Protection **Pins:** - A [pin 2] - K [pin 1] ### D10 — SMBJ33A-13-F - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33A-13-F_C135067.pdf - LCSC Part Number: C135067 - Manufacturer Name: DIODES(美台) - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33A-13-F_SMBJ33A-13-F_C135067.html - Role Details: 33 V standoff TVS from output drain to GND_FIELD - Package or Case Code: SMB_L4.6-W3.6-LS5.3-RD - Functional Group: Digital Outputs - Role: Protection - JLCPCB Part Class: Extended Part - Manufacturer Part Number: SMBJ33A-13-F - Part Type: TVS **Pins:** - A [pin 2] - K [pin 1] ### D11 — SS36-E3/9AT - Role: Flyback / Freewheeling - Role Details: Cathode to +24V_FIELD, anode to sinking output - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/aa5b397595a63cacedf45d8395c0577ce104a2cb2165c128dd83dcbb50414147.pdf - Manufacturer Part Number: SS36-E3/9AT - Manufacturer Name: Vishay General Semiconductor - Diodes Division - Functional Group: Digital Outputs **Pins:** - A [pin 2] - K [pin 1] ### D12 — SMBJ33A-13-F - Manufacturer Part Number: SMBJ33A-13-F - Part Type: TVS - JLCPCB Part Class: Extended Part - Functional Group: Digital Outputs - Role Details: 33 V standoff TVS from output drain to GND_FIELD - Package or Case Code: SMB_L4.6-W3.6-LS5.3-RD - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33A-13-F_SMBJ33A-13-F_C135067.html - Manufacturer Name: DIODES(美台) - LCSC Part Number: C135067 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33A-13-F_C135067.pdf - Role: Protection **Pins:** - A [pin 2] - K [pin 1] ### D13 — SMBJ33A-13-F - JLCPCB Part Class: Extended Part - Manufacturer Part Number: SMBJ33A-13-F - Part Type: TVS - Functional Group: Digital Outputs - Package or Case Code: SMB_L4.6-W3.6-LS5.3-RD - Role Details: 33 V standoff TVS from output drain to GND_FIELD - Role: Protection - LCSC Part Number: C135067 - Manufacturer Name: DIODES(美台) - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33A-13-F_SMBJ33A-13-F_C135067.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33A-13-F_C135067.pdf **Pins:** - A [pin 2] - K [pin 1] ### D14 — SMBJ33CA-13-F - LCSC Part Number: C135068 - Manufacturer Part Number: SMBJ33CA-13-F - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33CA-13-F_SMBJ33CA-13-F_C135068.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33CA-13-F_C135068.pdf - Functional Group: Digital Inputs - Package or Case Code: SMB_L4.6-W3.6-LS5.3-BI - Role: Clamping - Role Details: Bidirectional 33 V TVS across each polarity-configurable DI pair - Manufacturer Name: DIODES(美台) - Part Type: TVS - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin 1] - 2 [pin 2] ### D15 — SMBJ33CA-13-F - Functional Group: Digital Inputs - Manufacturer Name: DIODES(美台) - Part Type: TVS - JLCPCB Part Class: Extended Part - LCSC Part Number: C135068 - Role: Clamping - Manufacturer Part Number: SMBJ33CA-13-F - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33CA-13-F_SMBJ33CA-13-F_C135068.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33CA-13-F_C135068.pdf - Package or Case Code: SMB_L4.6-W3.6-LS5.3-BI - Role Details: Bidirectional 33 V TVS across each polarity-configurable DI pair **Pins:** - 1 [pin 1] - 2 [pin 2] ### D16 — SMBJ33CA-13-F - LCSC Part Number: C135068 - Role Details: Bidirectional 33 V TVS across each polarity-configurable DI pair - Role: Clamping - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33CA-13-F_SMBJ33CA-13-F_C135068.html - Manufacturer Part Number: SMBJ33CA-13-F - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33CA-13-F_C135068.pdf - Functional Group: Digital Inputs - Package or Case Code: SMB_L4.6-W3.6-LS5.3-BI - Manufacturer Name: DIODES(美台) - Part Type: TVS - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin 1] - 2 [pin 2] ### D17 — SMBJ33A-13-F - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33A-13-F_C135067.pdf - LCSC Part Number: C135067 - Manufacturer Name: DIODES(美台) - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33A-13-F_SMBJ33A-13-F_C135067.html - Package or Case Code: SMB_L4.6-W3.6-LS5.3-RD - JLCPCB Part Class: Extended Part - Functional Group: Digital Outputs - Role Details: 33 V standoff TVS from output drain to GND_FIELD - Part Type: TVS - Manufacturer Part Number: SMBJ33A-13-F - Role: Protection **Pins:** - A [pin 2] - K [pin 1] ### D18 — SMBJ33CA-13-F - Package or Case Code: SMB_L4.6-W3.6-LS5.3-BI - Functional Group: Digital Inputs - Role Details: Bidirectional 33 V TVS across each polarity-configurable DI pair - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33CA-13-F_C135068.pdf - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33CA-13-F_SMBJ33CA-13-F_C135068.html - Manufacturer Part Number: SMBJ33CA-13-F - LCSC Part Number: C135068 - Role: Clamping - JLCPCB Part Class: Extended Part - Manufacturer Name: DIODES(美台) - Part Type: TVS **Pins:** - 1 [pin 1] - 2 [pin 2] ### D19 — SMBJ33CA-13-F - Part Type: TVS - Manufacturer Name: DIODES(美台) - JLCPCB Part Class: Extended Part - Role Details: Bidirectional 33 V TVS across each polarity-configurable DI pair - Role: Clamping - Manufacturer Part Number: SMBJ33CA-13-F - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33CA-13-F_SMBJ33CA-13-F_C135068.html - Functional Group: Digital Inputs - LCSC Part Number: C135068 - Package or Case Code: SMB_L4.6-W3.6-LS5.3-BI - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33CA-13-F_C135068.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### D2 — SMBJ33A-13-F - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33A-13-F_SMBJ33A-13-F_C135067.html - LCSC Part Number: C135067 - Manufacturer Name: DIODES(美台) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33A-13-F_C135067.pdf - Role: Protection - Part Type: TVS - Functional Group: Field Power and Protection - Manufacturer Part Number: SMBJ33A-13-F - JLCPCB Part Class: Extended Part - Role Details: 33 V standoff TVS across protected field supply - Package or Case Code: SMB_L4.6-W3.6-LS5.3-RD **Pins:** - A [pin 2] - K [pin 1] ### D20 — SMBJ33CA-13-F - JLCPCB Part Class: Extended Part - Part Type: TVS - Manufacturer Name: DIODES(美台) - Role Details: Bidirectional 33 V TVS across each polarity-configurable DI pair - Package or Case Code: SMB_L4.6-W3.6-LS5.3-BI - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33CA-13-F_C135068.pdf - Role: Clamping - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33CA-13-F_SMBJ33CA-13-F_C135068.html - Manufacturer Part Number: SMBJ33CA-13-F - Functional Group: Digital Inputs - LCSC Part Number: C135068 **Pins:** - 1 [pin 1] - 2 [pin 2] ### D21 — SMBJ33CA-13-F - LCSC Part Number: C135068 - Role Details: Bidirectional 33 V TVS across each polarity-configurable DI pair - Role: Clamping - Manufacturer Part Number: SMBJ33CA-13-F - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33CA-13-F_SMBJ33CA-13-F_C135068.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33CA-13-F_C135068.pdf - Package or Case Code: SMB_L4.6-W3.6-LS5.3-BI - Functional Group: Digital Inputs - Manufacturer Name: DIODES(美台) - Part Type: TVS - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin 1] - 2 [pin 2] ### D23 — SM712 - Functional Group: Isolated RS-485 - Role: Bus Protection - Manufacturer Part Number: SM712 - Diode Type: Schottky Diode - Part Type: TVS - Forward Voltage: 0.45V to 0.55V - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2407101112_MDD-Microdiode-Semiconductor-SM712_C502564.pdf - Package or Case Code: SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR - LCSC Part Number: C502564 - Role Details: Asymmetric RS-485 TVS array to GND_FIELD - JLCPCB Part Class: Extended Part - Max Reverse Voltage: 20V - Manufacturer Name: MDD - Product Info Url: https://lcsc.com/product-detail/TVS_MDD-Microdiode-Electronics-SM712_C502564.html **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### D24 — SMBJ33CA-13-F - Manufacturer Name: DIODES(美台) - Part Type: TVS - Role: Clamping - JLCPCB Part Class: Extended Part - Functional Group: Digital Inputs - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33CA-13-F_SMBJ33CA-13-F_C135068.html - Manufacturer Part Number: SMBJ33CA-13-F - LCSC Part Number: C135068 - Role Details: Bidirectional 33 V TVS across each polarity-configurable DI pair - Package or Case Code: SMB_L4.6-W3.6-LS5.3-BI - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33CA-13-F_C135068.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### D3 — SS36-E3/9AT - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/aa5b397595a63cacedf45d8395c0577ce104a2cb2165c128dd83dcbb50414147.pdf - Functional Group: Digital Outputs - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Role Details: Cathode to +24V_FIELD, anode to sinking output - Role: Flyback / Freewheeling - Manufacturer Part Number: SS36-E3/9AT - Manufacturer Name: Vishay General Semiconductor - Diodes Division **Pins:** - A [pin 2] - K [pin 1] ### D4 — SS36-E3/9AT - Manufacturer Part Number: SS36-E3/9AT - Manufacturer Name: Vishay General Semiconductor - Diodes Division - Role: Flyback / Freewheeling - Functional Group: Digital Outputs - Role Details: Cathode to +24V_FIELD, anode to sinking output - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/aa5b397595a63cacedf45d8395c0577ce104a2cb2165c128dd83dcbb50414147.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode **Pins:** - A [pin 2] - K [pin 1] ### D5 — SS36-E3/9AT - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/aa5b397595a63cacedf45d8395c0577ce104a2cb2165c128dd83dcbb50414147.pdf - Part Type: Diode - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Digital Outputs - Role Details: Cathode to +24V_FIELD, anode to sinking output - Manufacturer Part Number: SS36-E3/9AT - Manufacturer Name: Vishay General Semiconductor - Diodes Division - Role: Flyback / Freewheeling **Pins:** - A [pin 2] - K [pin 1] ### D6 — SS36-E3/9AT - Manufacturer Part Number: SS36-E3/9AT - Manufacturer Name: Vishay General Semiconductor - Diodes Division - Role: Flyback / Freewheeling - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Digital Outputs - Part Type: Diode - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/aa5b397595a63cacedf45d8395c0577ce104a2cb2165c128dd83dcbb50414147.pdf - Role Details: Cathode to +24V_FIELD, anode to sinking output **Pins:** - A [pin 2] - K [pin 1] ### D7 — SS36-E3/9AT - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/aa5b397595a63cacedf45d8395c0577ce104a2cb2165c128dd83dcbb50414147.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Role Details: Cathode to +24V_FIELD, anode to sinking output - Role: Flyback / Freewheeling - Functional Group: Digital Outputs - Manufacturer Part Number: SS36-E3/9AT - Manufacturer Name: Vishay General Semiconductor - Diodes Division **Pins:** - A [pin 2] - K [pin 1] ### D8 — SMBJ33A-13-F - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33A-13-F_C135067.pdf - Role: Protection - Manufacturer Name: DIODES(美台) - LCSC Part Number: C135067 - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33A-13-F_SMBJ33A-13-F_C135067.html - Package or Case Code: SMB_L4.6-W3.6-LS5.3-RD - JLCPCB Part Class: Extended Part - Role Details: 33 V standoff TVS from output drain to GND_FIELD - Functional Group: Digital Outputs - Manufacturer Part Number: SMBJ33A-13-F - Part Type: TVS **Pins:** - A [pin 2] - K [pin 1] ### D9 — SMBJ33A-13-F - Functional Group: Digital Outputs - JLCPCB Part Class: Extended Part - Role Details: 33 V standoff TVS from output drain to GND_FIELD - Part Type: TVS - Manufacturer Part Number: SMBJ33A-13-F - Role: Protection - Package or Case Code: SMB_L4.6-W3.6-LS5.3-RD - Manufacturer Name: DIODES(美台) - LCSC Part Number: C135067 - Product Info Url: https://lcsc.com/product-detail/TVS_DIODES_SMBJ33A-13-F_SMBJ33A-13-F_C135067.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-SMBJ33A-13-F_C135067.pdf **Pins:** - A [pin 2] - K [pin 1] ### F1 — SMD050F-2 - Role Details: 60 V 0.5 A hold resettable PTC for internal power branch - Manufacturer Name: Littelfuse - Mount: Surface Mount - Role: Protection - Datasheet URL: https://www.littelfuse.com/assetdocs/littelfuse-ptc-smd-datasheet?assetguid=e664881a-0c68-4836-928b-7ed2f0c2a6da - Manufacturer Part Number: SMD050F-2 - Functional Group: Field Power and Protection - Part Type: Circuit Protection Devices - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - ~ [pin 2] - ~ [pin 1] ### J1 — 1729128 - Role: Field Connector - Package or Case Code: 1729128 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Manufacturer Part Number: 1729128 - Manufacturer Name: Phoenix Contact - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Functional Group: Field Power and Protection - Role Details: 24 VDC input and field return, Phoenix 5.08 mm **Pins:** - 1 [pin 1] - 2 [pin 2] ### J10 — 1729128 - Manufacturer Part Number: 1729128 - Manufacturer Name: Phoenix Contact - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Role: Field Connector - Role Details: Sinking output and +24 V load supply terminal - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Digital Outputs - Package or Case Code: 1729128 **Pins:** - 1 [pin 1] - 2 [pin 2] ### J11 — AVR-ISP-6 - Manufacturer Part Number: 61200621621 - Part Type: Connector - Role Details: Standard AVR ISP MISO/VCC/SCK/MOSI/RESET/GND - Role: Programming Connector - Datasheet URL: https://www.we-online.com/catalog/datasheet/61200621621.pdf - Functional Group: Logic MCU and Programming - Exclude from BOM: false - Symbol Style: parametric-v1 - Manufacturer Name: Würth Elektronik **Pins:** - GND [pin 6] - MISO [pin 1] - MOSI [pin 4] - RST [pin 5] - SCK [pin 3] - VCC [pin 2] ### J12 — 1729128 - Manufacturer Name: Phoenix Contact - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Manufacturer Part Number: 1729128 - Role Details: Sinking output and +24 V load supply terminal - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Package or Case Code: 1729128 - Role: Field Connector - Functional Group: Digital Outputs **Pins:** - 1 [pin 1] - 2 [pin 2] ### J13 — 1729128 - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Package or Case Code: 1729128 - Role: Field Connector - Role Details: Sinking output and +24 V load supply terminal - Functional Group: Digital Outputs - Manufacturer Name: Phoenix Contact - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Manufacturer Part Number: 1729128 **Pins:** - 1 [pin 1] - 2 [pin 2] ### J14 — 1729128 - Manufacturer Part Number: 1729128 - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Manufacturer Name: Phoenix Contact - Functional Group: Digital Outputs - Role Details: Sinking output and +24 V load supply terminal - Role: Field Connector - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Package or Case Code: 1729128 **Pins:** - 1 [pin 1] - 2 [pin 2] ### J15 — 1729128 - Package or Case Code: 1729128 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Role: Field Connector - Role Details: Sinking output and +24 V load supply terminal - Functional Group: Digital Outputs - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Manufacturer Name: Phoenix Contact - Manufacturer Part Number: 1729128 **Pins:** - 1 [pin 1] - 2 [pin 2] ### J16 — 1729128 - Manufacturer Part Number: 1729128 - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Manufacturer Name: Phoenix Contact - Functional Group: Digital Outputs - Role: Field Connector - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Package or Case Code: 1729128 - Role Details: Sinking output and +24 V load supply terminal **Pins:** - 1 [pin 1] - 2 [pin 2] ### J2 — 1729128 - Functional Group: Digital Inputs - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Package or Case Code: 1729128 - Role Details: DI signal and channel reference terminal - Manufacturer Part Number: 1729128 - Manufacturer Name: Phoenix Contact - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Role: Field Connector **Pins:** - 1 [pin 1] - 2 [pin 2] ### J26 — 1702558 - Manufacturer Part Number: 1702558 - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/aa8a2052276d2d573541bb1b7705191da19c38ad154e2eb95d82f895f5b72137.pdf - Role: Field Connector - Manufacturer Name: Phoenix Contact - Compliance: Green - Mount: Through Hole - Role Details: RS-485 A, B, GND_FIELD, SHIELD, spare - Functional Group: Isolated RS-485 - Part Type: Connector **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] ### J3 — 1729128 - Package or Case Code: 1729128 - Part Type: Connector - Role: Field Connector - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: DI signal and channel reference terminal - Functional Group: Digital Inputs - Manufacturer Name: Phoenix Contact - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Manufacturer Part Number: 1729128 **Pins:** - 1 [pin 1] - 2 [pin 2] ### J4 — 1729128 - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Manufacturer Name: Phoenix Contact - Role: Field Connector - Manufacturer Part Number: 1729128 - Role Details: DI signal and channel reference terminal - Functional Group: Digital Inputs - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Package or Case Code: 1729128 **Pins:** - 1 [pin 1] - 2 [pin 2] ### J5 — 1729128 - Functional Group: Digital Inputs - Role: Field Connector - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Package or Case Code: 1729128 - Role Details: DI signal and channel reference terminal - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Manufacturer Name: Phoenix Contact - Manufacturer Part Number: 1729128 **Pins:** - 1 [pin 1] - 2 [pin 2] ### J6 — 1729128 - Role Details: DI signal and channel reference terminal - Package or Case Code: 1729128 - Functional Group: Digital Inputs - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Manufacturer Name: Phoenix Contact - Manufacturer Part Number: 1729128 - Role: Field Connector **Pins:** - 1 [pin 1] - 2 [pin 2] ### J7 — 1729128 - Functional Group: Digital Inputs - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Role Details: DI signal and channel reference terminal - Package or Case Code: 1729128 - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Manufacturer Name: Phoenix Contact - Role: Field Connector - Manufacturer Part Number: 1729128 **Pins:** - 1 [pin 1] - 2 [pin 2] ### J8 — 1729128 - Role Details: DI signal and channel reference terminal - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Package or Case Code: 1729128 - Manufacturer Name: Phoenix Contact - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Manufacturer Part Number: 1729128 - Role: Field Connector - Functional Group: Digital Inputs **Pins:** - 1 [pin 1] - 2 [pin 2] ### J9 — 1729128 - Role Details: DI signal and channel reference terminal - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Manufacturer Name: Phoenix Contact - Manufacturer Part Number: 1729128 - Functional Group: Digital Inputs - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Role: Field Connector - Package or Case Code: 1729128 **Pins:** - 1 [pin 1] - 2 [pin 2] ### JP1 — Pin Header 01x03 2.54mm Vertical - Functional Group: Digital Inputs - Part Type: Connector - Role Details: Center to +24 V for sinking sensor or GND for sourcing sensor - License: https://creativecommons.org/licenses/by/4.0/ - Role: Configuration Jumper **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### JP10 — 640454-2 - Manufacturer Part Number: 640454-2 - Functional Group: Isolated RS-485 - Symbol Style: parametric-v1 - Mount: Solder - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/a9ad5569754d72a0a35c14078f6683b8e1907bac173dd4398974443b20057601.pdf - Role: Configuration Jumper - Part Type: Connectors - Manufacturer Name: TE Connectivity - Role Details: Selectable RS-485 termination or bias network **Pins:** - 1 [pin 1] - 2 [pin 2] ### JP11 — 640454-2 - Manufacturer Name: TE Connectivity - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/a9ad5569754d72a0a35c14078f6683b8e1907bac173dd4398974443b20057601.pdf - Part Type: Connectors - Symbol Style: parametric-v1 - Mount: Solder - Role: Configuration Jumper - Functional Group: Isolated RS-485 - Role Details: Selectable RS-485 termination or bias network - Manufacturer Part Number: 640454-2 **Pins:** - 1 [pin 1] - 2 [pin 2] ### JP2 — Pin Header 01x03 2.54mm Vertical - Role Details: Center to +24 V for sinking sensor or GND for sourcing sensor - Part Type: Connector - Functional Group: Digital Inputs - Role: Configuration Jumper - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### JP3 — Pin Header 01x03 2.54mm Vertical - Role Details: Center to +24 V for sinking sensor or GND for sourcing sensor - Functional Group: Digital Inputs - License: https://creativecommons.org/licenses/by/4.0/ - Role: Configuration Jumper - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### JP4 — Pin Header 01x03 2.54mm Vertical - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Center to +24 V for sinking sensor or GND for sourcing sensor - Role: Configuration Jumper - Part Type: Connector - Functional Group: Digital Inputs **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### JP5 — Pin Header 01x03 2.54mm Vertical - Functional Group: Digital Inputs - Role Details: Center to +24 V for sinking sensor or GND for sourcing sensor - Role: Configuration Jumper - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### JP6 — Pin Header 01x03 2.54mm Vertical - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Center to +24 V for sinking sensor or GND for sourcing sensor - Part Type: Connector - Role: Configuration Jumper - Functional Group: Digital Inputs **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### JP7 — Pin Header 01x03 2.54mm Vertical - License: https://creativecommons.org/licenses/by/4.0/ - Role: Configuration Jumper - Role Details: Center to +24 V for sinking sensor or GND for sourcing sensor - Part Type: Connector - Functional Group: Digital Inputs **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### JP8 — Pin Header 01x03 2.54mm Vertical - Functional Group: Digital Inputs - Role Details: Center to +24 V for sinking sensor or GND for sourcing sensor - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Role: Configuration Jumper **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### JP9 — 640454-2 - Manufacturer Name: TE Connectivity - Functional Group: Isolated RS-485 - Role Details: Selectable RS-485 termination or bias network - Part Type: Connectors - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/a9ad5569754d72a0a35c14078f6683b8e1907bac173dd4398974443b20057601.pdf - Symbol Style: parametric-v1 - Mount: Solder - Role: Configuration Jumper - Manufacturer Part Number: 640454-2 **Pins:** - 1 [pin 1] - 2 [pin 2] ### LED1 — 150060VS55040 - Functional Group: Logic MCU and Programming - Part Type: LED - Role: Status Indicator - Role Details: Green RUN LED driven by U4 buffer, not directly by SCK - Manufacturer Name: Würth Elektronik - Manufacturer Part Number: 150060VS55040 - Datasheet URL: https://www.we-online.com/components/products/datasheet/150060VS55040.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### PS1 — RS6-2405S - Functional Group: Field Power and Protection - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 18-36 V input, 5 V 1.2 A field rail; budgeted internal peak below 0.5 A - Datasheet URL: https://recom-power.com/pdf/Econoline/RS6.pdf - Role: Field DC-DC Converter - Part Type: Power Source - Manufacturer Name: Recom Power - Manufacturer Part Number: RS6-2405S **Pins:** - -VIN [pin 1] - -VOUT [pin 7] - +VIN [pin 2] - +VOUT [pin 6] - CTRL [pin 3] - NC [pin 8] - TRIM [pin 5] ### PS2 — MIE1W0505BGLVH-3R-P - Manufacturer Part Number: MIE1W0505BGLVH-3R-P - Role Details: 5 V to isolated 5 V, 200 mA, 2.5 kVrms isolation for MCU/ICSP domain - Manufacturer Name: Monolithic Power Systems (MPS) - Role: Isolated DC-DC Converter - Symbol Style: parametric-v1 - Package or Case Code: Module - Functional Group: Isolated Logic Power - License: https://creativecommons.org/licenses/by/4.0/ - Mount: Surface Mount - Part Type: DCDC Converter - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/fcd33120879ff56704dbb6c5a2dfaa6dcffa00cf9f0d47b7d22e78626a625890.pdf **Pins:** - EN [pin 8] - GND1_1 [pin 1] - GND1_2 [pin 11] - GND1_3 [pin 12] - GND1_4 [pin 13] - GND2_1 [pin 2] - GND2_2 [pin 3] - GND2_3 [pin 4] - GND2_4 [pin 16] - VIN_1 [pin 9] - VIN_2 [pin 10] - VIN_3 [pin 14] - VOUT_1 [pin 5] - VOUT_2 [pin 6] - VOUT_3 [pin 15] - VSEL [pin 7] ### Q1 — AONS66614 - Functional Group: Digital Outputs - Symbol Style: parametric-v1 - Package or Case Code: 8-DFN (5x6) - Manufacturer Part Number: AONS66614 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Part Type: Transistor - Role Details: 24 V 0.5 A sinking output MOSFET with large voltage/current margin - Manufacturer Name: Alpha & Omega Semiconductors - License: https://creativecommons.org/licenses/by/4.0/ - Role: Output Switch **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q2 — AONS66614 - Role Details: 24 V 0.5 A sinking output MOSFET with large voltage/current margin - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Part Type: Transistor - Functional Group: Digital Outputs - Manufacturer Name: Alpha & Omega Semiconductors - License: https://creativecommons.org/licenses/by/4.0/ - Role: Output Switch - Symbol Style: parametric-v1 - Package or Case Code: 8-DFN (5x6) - Manufacturer Part Number: AONS66614 **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q3 — AONS66614 - Role Details: 24 V 0.5 A sinking output MOSFET with large voltage/current margin - Manufacturer Name: Alpha & Omega Semiconductors - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Transistor - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Package or Case Code: 8-DFN (5x6) - Manufacturer Part Number: AONS66614 - Role: Output Switch - Functional Group: Digital Outputs - Symbol Style: parametric-v1 **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q4 — AONS66614 - Role: Output Switch - Symbol Style: parametric-v1 - Role Details: 24 V 0.5 A sinking output MOSFET with large voltage/current margin - Manufacturer Part Number: AONS66614 - Package or Case Code: 8-DFN (5x6) - Part Type: Transistor - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Functional Group: Digital Outputs - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Alpha & Omega Semiconductors **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q5 — AONS66614 - Package or Case Code: 8-DFN (5x6) - Functional Group: Digital Outputs - Manufacturer Part Number: AONS66614 - Symbol Style: parametric-v1 - Role: Output Switch - Manufacturer Name: Alpha & Omega Semiconductors - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Transistor - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - Role Details: 24 V 0.5 A sinking output MOSFET with large voltage/current margin **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### Q6 — AONS66614 - Part Type: Transistor - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/f2e0549afe9256ed3eab48b978f4fa3ab878187ce47c6265f947c8a09c109045.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Alpha & Omega Semiconductors - Symbol Style: parametric-v1 - Role Details: 24 V 0.5 A sinking output MOSFET with large voltage/current margin - Manufacturer Part Number: AONS66614 - Functional Group: Digital Outputs - Role: Output Switch - Package or Case Code: 8-DFN (5x6) **Pins:** - D_1 [pin 5] - D_2 [pin 6] - D_3 [pin 7] - D_4 [pin 8] - D_5 [pin 9] - G [pin 4] - S_1 [pin 1] - S_2 [pin 2] - S_3 [pin 3] ### SW1 — KMR231NGLFS - Role Details: Momentary reset to GND_LOG - Role: Reset Switch - Manufacturer Part Number: KMR231NGLFS - Part Type: Switch - Functional Group: Logic MCU and Programming - Manufacturer Name: C&K - Datasheet URL: https://www.snapeda.com/parts/KMR231NGLFS/C&K/datasheet/ - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - ~ [pin 2] - ~ [pin 1] - ~ [pin 4] - ~ [pin 3] ### U1 — ATMEGA328P-PU - Part Type: Microcontroller - Role: Microcontroller - Manufacturer Name: Microchip - Role Details: ATmega328P 28-pin PLC controller; exact specification pin mapping - Manufacturer Part Number: ATMEGA328P-PU - Symbol Style: parametric-v1 - Functional Group: Logic MCU and Programming - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/ATmega48A-PA-88A-PA-168A-PA-328-P-DS-DS40002061B.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - ~RESET~/PC6 [pin 1] - AREF [pin 21] - AVCC [pin 20] - GND [pin 8] - GND [pin 22] - PB0 [pin 14] - PB1 [pin 15] - PB2 [pin 16] - PB3 [pin 17] - PB4 [pin 18] - PB5 [pin 19] - PC0 [pin 23] - PC1 [pin 24] - PC2 [pin 25] - PC3 [pin 26] - PC4 [pin 27] - PC5 [pin 28] - PD0 [pin 2] - PD1 [pin 3] - PD2 [pin 4] - PD3 [pin 5] - PD4 [pin 6] - PD5 [pin 11] - PD6 [pin 12] - PD7 [pin 13] - VCC [pin 7] - XTAL1/PB6 [pin 9] - XTAL2/PB7 [pin 10] ### U10 — LTV-814S-TA1-A - Package or Case Code: OPTO-SMD-4_L4.6-W6.5-P2.54-LS10.3-BL - Role Details: IEC Type 1 field input optical isolation - Manufacturer Name: LITEON(光宝) - Part Type: Optocouplers - Phototransistor Output - Role: Input Isolation - LCSC Part Number: C108051 - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/SMD-Optocouplers_LTV-814S-TA1-A_C108051.html - Manufacturer Part Number: LTV-814S-TA1-A - Functional Group: Digital Inputs - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1811151432_Lite-On-LTV-814S-TA1-A_C108051.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### U11 — LTV-814S-TA1-A - JLCPCB Part Class: Extended Part - LCSC Part Number: C108051 - Functional Group: Digital Inputs - Manufacturer Name: LITEON(光宝) - Part Type: Optocouplers - Phototransistor Output - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1811151432_Lite-On-LTV-814S-TA1-A_C108051.pdf - Product Info Url: https://lcsc.com/product-detail/SMD-Optocouplers_LTV-814S-TA1-A_C108051.html - Role Details: IEC Type 1 field input optical isolation - Manufacturer Part Number: LTV-814S-TA1-A - Role: Input Isolation - Package or Case Code: OPTO-SMD-4_L4.6-W6.5-P2.54-LS10.3-BL **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### U12 — LTV-814S-TA1-A - Role Details: IEC Type 1 field input optical isolation - Package or Case Code: OPTO-SMD-4_L4.6-W6.5-P2.54-LS10.3-BL - Role: Input Isolation - Functional Group: Digital Inputs - Manufacturer Name: LITEON(光宝) - Part Type: Optocouplers - Phototransistor Output - JLCPCB Part Class: Extended Part - LCSC Part Number: C108051 - Manufacturer Part Number: LTV-814S-TA1-A - Product Info Url: https://lcsc.com/product-detail/SMD-Optocouplers_LTV-814S-TA1-A_C108051.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1811151432_Lite-On-LTV-814S-TA1-A_C108051.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### U13 — LTV-817S-TA - Part Type: Isolator - Manufacturer Part Number: LTV-817S-TA - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://optoelectronics.liteon.com/upload/download/DS-70-96-0016/LTV-8X7%20series%20%20Rev.S.PDF - Manufacturer Name: Lite-On Inc. - Role: Output Isolation - Role Details: Isolated field MOSFET gate control, default off - Functional Group: Digital Outputs **Pins:** - A [pin 1] - C [pin 4] - E [pin 3] - K [pin 2] ### U14 — LTV-817S-TA - Functional Group: Digital Outputs - Manufacturer Name: Lite-On Inc. - Datasheet URL: https://optoelectronics.liteon.com/upload/download/DS-70-96-0016/LTV-8X7%20series%20%20Rev.S.PDF - Role: Output Isolation - Manufacturer Part Number: LTV-817S-TA - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Isolator - Role Details: Isolated field MOSFET gate control, default off **Pins:** - A [pin 1] - C [pin 4] - E [pin 3] - K [pin 2] ### U15 — LTV-817S-TA - Part Type: Isolator - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: LTV-817S-TA - Datasheet URL: https://optoelectronics.liteon.com/upload/download/DS-70-96-0016/LTV-8X7%20series%20%20Rev.S.PDF - Functional Group: Digital Outputs - Manufacturer Name: Lite-On Inc. - Role Details: Isolated field MOSFET gate control, default off - Role: Output Isolation **Pins:** - A [pin 1] - C [pin 4] - E [pin 3] - K [pin 2] ### U16 — LTV-817S-TA - Role Details: Isolated field MOSFET gate control, default off - Functional Group: Digital Outputs - Part Type: Isolator - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: LTV-817S-TA - Datasheet URL: https://optoelectronics.liteon.com/upload/download/DS-70-96-0016/LTV-8X7%20series%20%20Rev.S.PDF - Role: Output Isolation - Manufacturer Name: Lite-On Inc. **Pins:** - A [pin 1] - C [pin 4] - E [pin 3] - K [pin 2] ### U17 — LTV-817S-TA - Functional Group: Digital Outputs - Manufacturer Name: Lite-On Inc. - Datasheet URL: https://optoelectronics.liteon.com/upload/download/DS-70-96-0016/LTV-8X7%20series%20%20Rev.S.PDF - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Isolated field MOSFET gate control, default off - Manufacturer Part Number: LTV-817S-TA - Role: Output Isolation - Part Type: Isolator **Pins:** - A [pin 1] - C [pin 4] - E [pin 3] - K [pin 2] ### U18 — LTV-817S-TA - Part Type: Isolator - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: LTV-817S-TA - Role Details: Isolated field MOSFET gate control, default off - Role: Output Isolation - Datasheet URL: https://optoelectronics.liteon.com/upload/download/DS-70-96-0016/LTV-8X7%20series%20%20Rev.S.PDF - Manufacturer Name: Lite-On Inc. - Functional Group: Digital Outputs **Pins:** - A [pin 1] - C [pin 4] - E [pin 3] - K [pin 2] ### U2 — ISO7731FDWR - Part Type: Digital Isolators - Role Details: RS-485 UART/direction isolation with default-low field outputs - LCSC Part Number: C2865127 - Manufacturer Part Number: ISO7731FDWR - JLCPCB Part Class: Extended Part - Package or Case Code: SOIC-16_L10.3-W7.5-P1.27-LS10.4-BL - Manufacturer Name: TI(德州仪器) - Role: Digital Isolator - Functional Group: Isolated RS-485 **Pins:** - EN1 [pin 7] - EN2 [pin 10] - GND1 [pin 8] - GND1 [pin 2] - GND2 [pin 15] - GND2 [pin 9] - INA [pin 3] - INB [pin 4] - INC [pin 12] - NC [pin 6] - NC [pin 11] - OUTA [pin 14] - OUTB [pin 13] - OUTC [pin 5] - VCC1 [pin 1] - VCC2 [pin 16] ### U3 — THVD1452D - Package or Case Code: SOIC-14_L8.7-W3.9-P1.27-LS6.0-BL - Functional Group: Isolated RS-485 - Manufacturer Part Number: THVD1452D - LCSC Part Number: C1544091 - Role: RS-485 Transceiver - Role Details: 5 V field-side controllable half-duplex transceiver - Manufacturer Name: TI(德州仪器) - JLCPCB Part Class: Extended Part **Pins:** - ~{RE} [pin 3] - A [pin 12] - B [pin 11] - D [pin 5] - DE [pin 4] - GND [pin 7] - GND [pin 6] - NC [pin 8] - NC [pin 1] - R [pin 2] - VCC [pin 13] - VCC [pin 14] - Y [pin 9] - Z [pin 10] ### U4 — SN74LVC1G126DBVR - Role Details: Buffers PB5/SCK so RUN LED cannot load AVR ICSP clock - Manufacturer Part Number: SN74LVC1G126DBVR - Functional Group: Logic MCU and Programming - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Role: LED Buffer - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/lit/ds/symlink/sn74lvc1g126.pdf **Pins:** - A [pin 2] - GND [pin 3] - OE [pin 1] - VCC [pin 5] - Y [pin 4] ### U5 — LTV-814S-TA1-A - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1811151432_Lite-On-LTV-814S-TA1-A_C108051.pdf - Product Info Url: https://lcsc.com/product-detail/SMD-Optocouplers_LTV-814S-TA1-A_C108051.html - Manufacturer Part Number: LTV-814S-TA1-A - LCSC Part Number: C108051 - JLCPCB Part Class: Extended Part - Functional Group: Digital Inputs - Role Details: IEC Type 1 field input optical isolation - Role: Input Isolation - Part Type: Optocouplers - Phototransistor Output - Manufacturer Name: LITEON(光宝) - Package or Case Code: OPTO-SMD-4_L4.6-W6.5-P2.54-LS10.3-BL **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### U6 — LTV-814S-TA1-A - Role: Input Isolation - Role Details: IEC Type 1 field input optical isolation - Package or Case Code: OPTO-SMD-4_L4.6-W6.5-P2.54-LS10.3-BL - Product Info Url: https://lcsc.com/product-detail/SMD-Optocouplers_LTV-814S-TA1-A_C108051.html - Manufacturer Part Number: LTV-814S-TA1-A - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1811151432_Lite-On-LTV-814S-TA1-A_C108051.pdf - Manufacturer Name: LITEON(光宝) - Part Type: Optocouplers - Phototransistor Output - LCSC Part Number: C108051 - JLCPCB Part Class: Extended Part - Functional Group: Digital Inputs **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### U7 — LTV-814S-TA1-A - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1811151432_Lite-On-LTV-814S-TA1-A_C108051.pdf - Product Info Url: https://lcsc.com/product-detail/SMD-Optocouplers_LTV-814S-TA1-A_C108051.html - Manufacturer Part Number: LTV-814S-TA1-A - JLCPCB Part Class: Extended Part - LCSC Part Number: C108051 - Part Type: Optocouplers - Phototransistor Output - Manufacturer Name: LITEON(光宝) - Role: Input Isolation - Role Details: IEC Type 1 field input optical isolation - Functional Group: Digital Inputs - Package or Case Code: OPTO-SMD-4_L4.6-W6.5-P2.54-LS10.3-BL **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### U8 — LTV-814S-TA1-A - Product Info Url: https://lcsc.com/product-detail/SMD-Optocouplers_LTV-814S-TA1-A_C108051.html - Manufacturer Part Number: LTV-814S-TA1-A - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1811151432_Lite-On-LTV-814S-TA1-A_C108051.pdf - Manufacturer Name: LITEON(光宝) - Part Type: Optocouplers - Phototransistor Output - JLCPCB Part Class: Extended Part - LCSC Part Number: C108051 - Role Details: IEC Type 1 field input optical isolation - Functional Group: Digital Inputs - Role: Input Isolation - Package or Case Code: OPTO-SMD-4_L4.6-W6.5-P2.54-LS10.3-BL **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### U9 — LTV-814S-TA1-A - LCSC Part Number: C108051 - JLCPCB Part Class: Extended Part - Part Type: Optocouplers - Phototransistor Output - Functional Group: Digital Inputs - Manufacturer Name: LITEON(光宝) - Role Details: IEC Type 1 field input optical isolation - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1811151432_Lite-On-LTV-814S-TA1-A_C108051.pdf - Role: Input Isolation - Manufacturer Part Number: LTV-814S-TA1-A - Product Info Url: https://lcsc.com/product-detail/SMD-Optocouplers_LTV-814S-TA1-A_C108051.html - Package or Case Code: OPTO-SMD-4_L4.6-W6.5-P2.54-LS10.3-BL **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### Y1 — CX3225SB16000D0GZJC1 - Role Details: 16 MHz, 8 pF load crystal for ATmega328P - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/1859/CX3225SB16000D0GZJC1_Spec.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: CX3225SB16000D0GZJC1 - Functional Group: Logic MCU and Programming - Part Type: Crystals and Oscillators - Manufacturer Name: KYOCERA AVX - Role: Clock Crystal - Mount: Surface Mount **Pins:** - GND_1 [pin 2] - GND_2 [pin 4] - HOT_1 [pin 1] - HOT_2 [pin 3] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/khadyevinayak89/atmega328p-industrial-plc-controller~l3](https://www.flux.ai/khadyevinayak89/atmega328p-industrial-plc-controller~l3).* --- *Generated from [https://www.flux.ai/khadyevinayak89/atmega328p-industrial-plc-controller~l3](https://www.flux.ai/khadyevinayak89/atmega328p-industrial-plc-controller~l3)*