# Teensy Coffee Machine Controller ## Description Teensy 4.1 based coffee machine control board with five 120VAC relay channels, thermocouple and RTD temperature inputs, analog divider inputs, UART breakout, and 5V power input. ## Project Details - **Owner:** nathant15 - **Created:** 6/23/2026 - **Last Updated:** 6/23/2026 - **Visibility:** Public - **Copies:** 1 ## Key Components ### D1 — [1N4148](https://www.flux.ai/adrian95/1n4148~mnh.md) - Manufacturer Name: onsemi - Datasheet URL: https://www.onsemi.com/pdf/datasheet/1n914-d.pdf - Part Type: Diode - Role: Flyback Protection - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 1N4148 - Role Details: Clamp relay coil inductive kickback to +5V **Pins:** - anode [pin 2] - cathode [pin 1] ### D2 — [1N4148](https://www.flux.ai/adrian95/1n4148~mnh.md) - Part Type: Diode - Datasheet URL: https://www.onsemi.com/pdf/datasheet/1n914-d.pdf - Manufacturer Name: onsemi - Role: Flyback Protection - Manufacturer Part Number: 1N4148 - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Clamp relay coil inductive kickback to +5V **Pins:** - anode [pin 2] - cathode [pin 1] ### D3 — [1N4148](https://www.flux.ai/adrian95/1n4148~mnh.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 1N4148 - Role: Flyback Protection - Role Details: Clamp relay coil inductive kickback to +5V - Manufacturer Name: onsemi - Datasheet URL: https://www.onsemi.com/pdf/datasheet/1n914-d.pdf - Part Type: Diode **Pins:** - anode [pin 2] - cathode [pin 1] ### D4 — [1N4148](https://www.flux.ai/adrian95/1n4148~mnh.md) - Manufacturer Part Number: 1N4148 - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Clamp relay coil inductive kickback to +5V - Part Type: Diode - Datasheet URL: https://www.onsemi.com/pdf/datasheet/1n914-d.pdf - Role: Flyback Protection - Manufacturer Name: onsemi **Pins:** - anode [pin 2] - cathode [pin 1] ### D5 — [1N4148](https://www.flux.ai/adrian95/1n4148~mnh.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 1N4148 - Role Details: Clamp relay coil inductive kickback to +5V - Manufacturer Name: onsemi - Datasheet URL: https://www.onsemi.com/pdf/datasheet/1n914-d.pdf - Role: Flyback Protection - Part Type: Diode **Pins:** - anode [pin 2] - cathode [pin 1] ### F1 — [178.7017.0001](https://www.flux.ai/adrian95/178p7017p0001.md) - Role: Protection - Part Type: Circuit Protection Devices - Manufacturer Part Number: 178.7017.0001 - Datasheet URL: https://www.littelfuse.com/assetdocs/ato-fkh-datasheet?assetguid=52ab370f-f59e-4f6c-87fb-d18075289d4c - Manufacturer Name: Littelfuse - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Relay 1 load fuse holder; populate with 2A time/fast characteristic appropriate to load and safety agency requirements **Pins:** - 1 [pin 1] - 2 [pin 2] ### F2 — [178.7017.0001](https://www.flux.ai/adrian95/178p7017p0001.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Littelfuse - Role Details: Relay 2 load fuse holder; populate with 2A time/fast characteristic appropriate to load and safety agency requirements - Datasheet URL: https://www.littelfuse.com/assetdocs/ato-fkh-datasheet?assetguid=52ab370f-f59e-4f6c-87fb-d18075289d4c - Manufacturer Part Number: 178.7017.0001 - Part Type: Circuit Protection Devices - Role: Protection **Pins:** - 1 [pin 1] - 2 [pin 2] ### F3 — [178.7017.0001](https://www.flux.ai/adrian95/178p7017p0001.md) - Role Details: Relay 3 load fuse holder; populate with 2A time/fast characteristic appropriate to load and safety agency requirements - Manufacturer Name: Littelfuse - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 178.7017.0001 - Role: Protection - Part Type: Circuit Protection Devices - Datasheet URL: https://www.littelfuse.com/assetdocs/ato-fkh-datasheet?assetguid=52ab370f-f59e-4f6c-87fb-d18075289d4c **Pins:** - 1 [pin 1] - 2 [pin 2] ### F4 — [178.7017.0001](https://www.flux.ai/adrian95/178p7017p0001.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Littelfuse - Role: Protection - Role Details: Relay 4 load fuse holder; populate with 2A time/fast characteristic appropriate to load and safety agency requirements - Datasheet URL: https://www.littelfuse.com/assetdocs/ato-fkh-datasheet?assetguid=52ab370f-f59e-4f6c-87fb-d18075289d4c - Manufacturer Part Number: 178.7017.0001 - Part Type: Circuit Protection Devices **Pins:** - 1 [pin 1] - 2 [pin 2] ### F5 — [178.7017.0001](https://www.flux.ai/adrian95/178p7017p0001.md) - Role Details: Relay 5 load fuse holder; populate with 2A time/fast characteristic appropriate to load and safety agency requirements - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Littelfuse - Datasheet URL: https://www.littelfuse.com/assetdocs/ato-fkh-datasheet?assetguid=52ab370f-f59e-4f6c-87fb-d18075289d4c - Role: Protection - Manufacturer Part Number: 178.7017.0001 - Part Type: Circuit Protection Devices **Pins:** - 1 [pin 1] - 2 [pin 2] ### J1 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - Manufacturer Part Number: 1757242 - Role: Field Wiring Terminal Block - Manufacturer Name: Phoenix Contact - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 5.08mm 2-position pluggable terminal for external wiring **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J10 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Role: Field Wiring Terminal Block - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 1757242 - Manufacturer Name: Phoenix Contact - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - Role Details: PT100 RTD force pair terminal for U5 FORCE+/FORCE- **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J11 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Manufacturer Name: Phoenix Contact - Manufacturer Part Number: 1757242 - Role Details: 5.08mm 2-position pluggable terminal for external wiring - Role: Field Wiring Terminal Block - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J12 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Role: Field Wiring Terminal Block - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - Manufacturer Part Number: 1757242 - Manufacturer Name: Phoenix Contact - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 5.08mm 2-position pluggable terminal for external wiring **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J18 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - Manufacturer Part Number: 1757242 - Role: Field Wiring Terminal Block - Manufacturer Name: Phoenix Contact - Part Type: Connector - Role Details: 5.08mm 2-position pluggable terminal for external wiring - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J19 — [TSW-104-07-G-S](https://www.flux.ai/adrian95/tsw-104-07-g-s~983.md) - Manufacturer Part Number: TSW-104-07-G-S - Part Type: Connector - Role: Connector - Manufacturer Name: Samtec Inc. - Role Details: 1x4 2.54mm UART header: 3V3, TX/RX, GND - License: https://creativecommons.org/licenses/by/4.0/ - Package or Case Code: TSW10407GS - Datasheet URL: http://suddendocs.samtec.com/prints/tsw-xxx-xx-xxx-x-xx-xxx-mkt.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### J2 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 5.08mm 2-position pluggable terminal for external wiring - Part Type: Connector - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - Role: Field Wiring Terminal Block - Manufacturer Name: Phoenix Contact - Manufacturer Part Number: 1757242 **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J20 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - Role: Field Wiring Terminal Block - Manufacturer Name: Phoenix Contact - Manufacturer Part Number: 1757242 - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: PT1000 RTD sense pair terminal for U6 RTDIN+/RTDIN- - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J21 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Role: Field Wiring Terminal Block - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Manufacturer Name: Phoenix Contact - Manufacturer Part Number: 1757242 - Role Details: PT1000 RTD force pair terminal for U6 FORCE+/FORCE- - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J3 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Role: Field Wiring Terminal Block - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - Manufacturer Part Number: 1757242 - Role Details: 5.08mm 2-position pluggable terminal for external wiring - Manufacturer Name: Phoenix Contact - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J4 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Role: Field Wiring Terminal Block - Manufacturer Name: Phoenix Contact - Manufacturer Part Number: 1757242 - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - Role Details: 5.08mm 2-position pluggable terminal for external wiring - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J5 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Role Details: 5.08mm 2-position pluggable terminal for external wiring - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Manufacturer Name: Phoenix Contact - Role: Field Wiring Terminal Block - Manufacturer Part Number: 1757242 - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J6 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - Manufacturer Name: Phoenix Contact - Manufacturer Part Number: 1757242 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Role: Field Wiring Terminal Block - Role Details: 5.08mm 2-position pluggable terminal for external wiring **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J7 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 1757242 - Manufacturer Name: Phoenix Contact - Role Details: 5.08mm 2-position pluggable terminal for external wiring - Role: Field Wiring Terminal Block - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J8 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Role Details: 5.08mm 2-position pluggable terminal for external wiring - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - Manufacturer Part Number: 1757242 - Role: Field Wiring Terminal Block - Manufacturer Name: Phoenix Contact - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J9 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Manufacturer Name: Phoenix Contact - Manufacturer Part Number: 1757242 - Role: Field Wiring Terminal Block - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - Role Details: PT100 RTD sense pair terminal for U5 RTDIN+/RTDIN- - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### K1 — [PR2-5V-450-1C](https://www.flux.ai/adrian95/pr2-5v-450-1c~nlr.md) - Part Type: Relay - Datasheet URL: https://www.cuidevices.com/product/resource/pr2.pdf - Manufacturer Part Number: PR2-5V-450-1C - Manufacturer Name: CUI Devices - Role Details: 5V coil SPDT relay, contacts used for 120VAC 2A load switching - License: https://creativecommons.org/licenses/by/4.0/ - Role: Relay Output **Pins:** - COIL_1 [pin 1] - COIL_2 [pin 2] - COM [pin 3] - NC [pin 5] - NO [pin 4] ### K2 — [PR2-5V-450-1C](https://www.flux.ai/adrian95/pr2-5v-450-1c~nlr.md) - Datasheet URL: https://www.cuidevices.com/product/resource/pr2.pdf - Manufacturer Part Number: PR2-5V-450-1C - Role: Relay Output - Part Type: Relay - Role Details: 5V coil SPDT relay, contacts used for 120VAC 2A load switching - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: CUI Devices **Pins:** - COIL_1 [pin 1] - COIL_2 [pin 2] - COM [pin 3] - NC [pin 5] - NO [pin 4] ### K3 — [PR2-5V-450-1C](https://www.flux.ai/adrian95/pr2-5v-450-1c~nlr.md) - Role Details: 5V coil SPDT relay, contacts used for 120VAC 2A load switching - Manufacturer Part Number: PR2-5V-450-1C - Datasheet URL: https://www.cuidevices.com/product/resource/pr2.pdf - Role: Relay Output - Part Type: Relay - Manufacturer Name: CUI Devices - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - COIL_1 [pin 1] - COIL_2 [pin 2] - COM [pin 3] - NC [pin 5] - NO [pin 4] ### K4 — [PR2-5V-450-1C](https://www.flux.ai/adrian95/pr2-5v-450-1c~nlr.md) - Role: Relay Output - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: CUI Devices - Datasheet URL: https://www.cuidevices.com/product/resource/pr2.pdf - Manufacturer Part Number: PR2-5V-450-1C - Role Details: 5V coil SPDT relay, contacts used for 120VAC 2A load switching - Part Type: Relay **Pins:** - COIL_1 [pin 1] - COIL_2 [pin 2] - COM [pin 3] - NC [pin 5] - NO [pin 4] ### K5 — [PR2-5V-450-1C](https://www.flux.ai/adrian95/pr2-5v-450-1c~nlr.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role: Relay Output - Manufacturer Name: CUI Devices - Role Details: 5V coil SPDT relay, contacts used for 120VAC 2A load switching - Datasheet URL: https://www.cuidevices.com/product/resource/pr2.pdf - Manufacturer Part Number: PR2-5V-450-1C - Part Type: Relay **Pins:** - COIL_1 [pin 1] - COIL_2 [pin 2] - COM [pin 3] - NC [pin 5] - NO [pin 4] ### Q1 — [2N7002](https://www.flux.ai/lcsc/2n7002~13ip.md) - Drain to Source Voltage: 60V - Manufacturer Name: MDD(辰达半导体) - Role: Relay Coil Driver - JLCPCB Part Class: Extended Part - Continuous Drain Current: 200mA at 25°C - LCSC Part Number: C472906 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2407101108_MDD-Microdiode-Semiconductor-2N7002_C472906.pdf - Manufacturer Part Number: 2N7002 - Part Type: MOSFETs - Product Info Url: https://lcsc.com/product-detail/MOSFET_MDD-Microdiode-Electronics-2N7002_C472906.html - Package or Case Code: SOT-23-3_L2.9-W1.5-P1.90-LS2.6-BR - Transistor Type: N-channel MOSFET - Role Details: Teensy GPIO low-side relay coil switch **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q2 — [2N7002](https://www.flux.ai/lcsc/2n7002~13ip.md) - Drain to Source Voltage: 60V - Role: Relay Coil Driver - Manufacturer Name: MDD(辰达半导体) - Role Details: Teensy GPIO low-side relay coil switch - Continuous Drain Current: 200mA at 25°C - JLCPCB Part Class: Extended Part - Part Type: MOSFETs - Manufacturer Part Number: 2N7002 - LCSC Part Number: C472906 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2407101108_MDD-Microdiode-Semiconductor-2N7002_C472906.pdf - Product Info Url: https://lcsc.com/product-detail/MOSFET_MDD-Microdiode-Electronics-2N7002_C472906.html - Package or Case Code: SOT-23-3_L2.9-W1.5-P1.90-LS2.6-BR - Transistor Type: N-channel MOSFET **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q3 — [2N7002](https://www.flux.ai/lcsc/2n7002~13ip.md) - Manufacturer Name: MDD(辰达半导体) - Role Details: Teensy GPIO low-side relay coil switch - Drain to Source Voltage: 60V - Transistor Type: N-channel MOSFET - Role: Relay Coil Driver - Product Info Url: https://lcsc.com/product-detail/MOSFET_MDD-Microdiode-Electronics-2N7002_C472906.html - Package or Case Code: SOT-23-3_L2.9-W1.5-P1.90-LS2.6-BR - LCSC Part Number: C472906 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2407101108_MDD-Microdiode-Semiconductor-2N7002_C472906.pdf - Part Type: MOSFETs - Manufacturer Part Number: 2N7002 - JLCPCB Part Class: Extended Part - Continuous Drain Current: 200mA at 25°C **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q4 — [2N7002](https://www.flux.ai/lcsc/2n7002~13ip.md) - Role: Relay Coil Driver - Manufacturer Name: MDD(辰达半导体) - Drain to Source Voltage: 60V - Role Details: Teensy GPIO low-side relay coil switch - Transistor Type: N-channel MOSFET - Package or Case Code: SOT-23-3_L2.9-W1.5-P1.90-LS2.6-BR - Product Info Url: https://lcsc.com/product-detail/MOSFET_MDD-Microdiode-Electronics-2N7002_C472906.html - Manufacturer Part Number: 2N7002 - Part Type: MOSFETs - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2407101108_MDD-Microdiode-Semiconductor-2N7002_C472906.pdf - LCSC Part Number: C472906 - Continuous Drain Current: 200mA at 25°C - JLCPCB Part Class: Extended Part **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q5 — [2N7002](https://www.flux.ai/lcsc/2n7002~13ip.md) - Drain to Source Voltage: 60V - Manufacturer Name: MDD(辰达半导体) - JLCPCB Part Class: Extended Part - Continuous Drain Current: 200mA at 25°C - Role: Relay Coil Driver - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2407101108_MDD-Microdiode-Semiconductor-2N7002_C472906.pdf - LCSC Part Number: C472906 - Manufacturer Part Number: 2N7002 - Part Type: MOSFETs - Role Details: Teensy GPIO low-side relay coil switch - Package or Case Code: SOT-23-3_L2.9-W1.5-P1.90-LS2.6-BR - Product Info Url: https://lcsc.com/product-detail/MOSFET_MDD-Microdiode-Electronics-2N7002_C472906.html - Transistor Type: N-channel MOSFET **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### RV1 — [B72210S0271K101](https://www.flux.ai/cherepanyadima/b72210s0271k101~3w.md) - Manufacturer Part Number: B72210S0271K101 - Part Type: Varistor - Role: Protection - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 275VAC MOV across relay 1 switched output; verify MOV/fuse coordination and safety agency approvals - Datasheet URL: https://www.tdk-electronics.tdk.com/inf/70/db/var/SIOV_Leaded_StandarD.pdf - Manufacturer Name: EPCOS - TDK Electronics **Pins:** - 1 [pin 1] - 2 [pin 2] ### RV2 — [B72210S0271K101](https://www.flux.ai/cherepanyadima/b72210s0271k101~3w.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: B72210S0271K101 - Role Details: 275VAC MOV across relay 2 switched output; verify MOV/fuse coordination and safety agency approvals - Part Type: Varistor - Manufacturer Name: EPCOS - TDK Electronics - Role: Protection - Datasheet URL: https://www.tdk-electronics.tdk.com/inf/70/db/var/SIOV_Leaded_StandarD.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### RV3 — [B72210S0271K101](https://www.flux.ai/cherepanyadima/b72210s0271k101~3w.md) - Manufacturer Name: EPCOS - TDK Electronics - Role Details: 275VAC MOV across relay 3 switched output; verify MOV/fuse coordination and safety agency approvals - Datasheet URL: https://www.tdk-electronics.tdk.com/inf/70/db/var/SIOV_Leaded_StandarD.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Varistor - Role: Protection - Manufacturer Part Number: B72210S0271K101 **Pins:** - 1 [pin 1] - 2 [pin 2] ### RV4 — [B72210S0271K101](https://www.flux.ai/cherepanyadima/b72210s0271k101~3w.md) - Datasheet URL: https://www.tdk-electronics.tdk.com/inf/70/db/var/SIOV_Leaded_StandarD.pdf - Manufacturer Name: EPCOS - TDK Electronics - Role: Protection - Manufacturer Part Number: B72210S0271K101 - Part Type: Varistor - Role Details: 275VAC MOV across relay 4 switched output; verify MOV/fuse coordination and safety agency approvals - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] ### RV5 — [B72210S0271K101](https://www.flux.ai/cherepanyadima/b72210s0271k101~3w.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 275VAC MOV across relay 5 switched output; verify MOV/fuse coordination and safety agency approvals - Part Type: Varistor - Manufacturer Part Number: B72210S0271K101 - Role: Protection - Manufacturer Name: EPCOS - TDK Electronics - Datasheet URL: https://www.tdk-electronics.tdk.com/inf/70/db/var/SIOV_Leaded_StandarD.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [Teensy 4.1](https://www.flux.ai/adrian95/teensy-4p1~xp5.md) - Manufacturer Part Number: DEV-16996 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: SparkFun Electronics - Role: Microcontroller module / socket target - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/2942/DEV-16996_Web.pdf - Role Details: Teensy 4.1 carrier footprint; populate matching 0.1 in female headers for removable module - Part Type: Development Board **Pins:** - 0_ [pin 2] - 1_ [pin 3] - 10_ [pin 12] - 11_ [pin 13] - 12_ [pin 14] - 13_ [pin 35] - 14_ [pin 36] - 15_ [pin 37] - 16_ [pin 38] - 17_ [pin 39] - 18_ [pin 40] - 19_ [pin 41] - 2_ [pin 4] - 20_ [pin 42] - 21_ [pin 43] - 22_ [pin 44] - 23_ [pin 45] - 24_ [pin 16] - 25_ [pin 17] - 26_ [pin 18] - 27_ [pin 19] - 28_ [pin 20] - 29_ [pin 21] - 3_ [pin 5] - 30_ [pin 22] - 31_ [pin 23] - 32_ [pin 24] - 33_ [pin 25] - 34_ [pin 26] - 35_ [pin 27] - 36_ [pin 28] - 37_ [pin 29] - 38_ [pin 30] - 39_ [pin 31] - 3V [pin 15] - 3V3 [pin 46] - 4_ [pin 6] - 40_ [pin 32] - 41_ [pin 33] - 5_ [pin 7] - 5V [pin 48] - 6_ [pin 8] - 7_ [pin 9] - 8_ [pin 10] - 9_ [pin 11] - G_1 [pin 1] - G_2 [pin 34] - G_3 [pin 47] ### U2 — [MAX31855KASA+](https://www.flux.ai/lcsc/max31855kasaplus~mnuv.md) - Manufacturer Name: ADI(亚德诺)/MAXIM(美信) - Datasheet URL: https://www.lcsc.com/datasheet/C1523572.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FlVZVVIFFgBeVAVTT1BXUgFfEwJeVlBfEwVcAlMHRAQxVlNeR1RcVVZfQFJaVTsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - LCSC Part Number: C1523572 - Manufacturer Part Number: MAX31855KASA+ - Part Type: Sensor Interface ICs - JLCPCB Part Class: Extended Part - Role Details: 3.3V SPI thermocouple-to-digital converter with cold-junction compensation - Role: Type K Thermocouple Amplifier - Symbol Style: parametric-v1 - Package or Case Code: SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL-2 **Pins:** - ~{CS} [pin 6] - DNC [pin 8] - GND [pin 1] - SCK [pin 5] - SO [pin 7] - T- [pin 2] - T+ [pin 3] - VCC [pin 4] ### U3 — [MAX31855KASA+](https://www.flux.ai/lcsc/max31855kasaplus~mnuv.md) - Symbol Style: parametric-v1 - Package or Case Code: SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL-2 - Role Details: 3.3V SPI thermocouple-to-digital converter with cold-junction compensation - Manufacturer Name: ADI(亚德诺)/MAXIM(美信) - Datasheet URL: https://www.lcsc.com/datasheet/C1523572.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FlVZVVIFFgBeVAVTT1BXUgFfEwJeVlBfEwVcAlMHRAQxVlNeR1RcVVZfQFJaVTsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - LCSC Part Number: C1523572 - Manufacturer Part Number: MAX31855KASA+ - Role: Type K Thermocouple Amplifier - Part Type: Sensor Interface ICs - JLCPCB Part Class: Extended Part **Pins:** - ~{CS} [pin 6] - DNC [pin 8] - GND [pin 1] - SCK [pin 5] - SO [pin 7] - T- [pin 2] - T+ [pin 3] - VCC [pin 4] ### U4 — [MAX31855KASA+](https://www.flux.ai/lcsc/max31855kasaplus~mnuv.md) - Symbol Style: parametric-v1 - Role Details: 3.3V SPI thermocouple-to-digital converter with cold-junction compensation - Package or Case Code: SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL-2 - Manufacturer Name: ADI(亚德诺)/MAXIM(美信) - Datasheet URL: https://www.lcsc.com/datasheet/C1523572.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FlVZVVIFFgBeVAVTT1BXUgFfEwJeVlBfEwVcAlMHRAQxVlNeR1RcVVZfQFJaVTsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - Manufacturer Part Number: MAX31855KASA+ - LCSC Part Number: C1523572 - Part Type: Sensor Interface ICs - Role: Type K Thermocouple Amplifier - JLCPCB Part Class: Extended Part **Pins:** - ~{CS} [pin 6] - DNC [pin 8] - GND [pin 1] - SCK [pin 5] - SO [pin 7] - T- [pin 2] - T+ [pin 3] - VCC [pin 4] ### U5 — [MAX31865AAP+T](https://www.flux.ai/lcsc/max31865aapplust~s7sa.md) - Role: RTD Amplifier - Manufacturer Part Number: MAX31865AAP+T - Package or Case Code: SSOP-20_L7.2-W5.3-P0.65-LS7.8-BL - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/max31865.pdf - Part Type: Analog To Digital Converters (ADCs) - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Role Details: 3.3V SPI RTD converter dedicated to PT100 input channel; finalize reference resistor/population choice before manufacturing - Manufacturer Name: Analog Devices Inc./Maxim Integrated - JLCPCB Part Class: Extended Part - Voltage Supply: 3V ~ 3.6V - LCSC Part Number: C779509 - Operating Temperature: -40°C ~ 125°C **Pins:** - ~{CS} [pin 16] - ~{DRDY} [pin 1] - BIAS [pin 4] - DGND [pin 18] - DVDD [pin 2] - FORCE [pin 12] - FORCE+ [pin 8] - FORCE2 [pin 9] - GND [pin 19] - GND2 [pin 13] - ISENSOR [pin 7] - N.C. [pin 20] - REFIN- [pin 6] - REFIN+ [pin 5] - RTDIN- [pin 11] - RTDIN+ [pin 10] - SCLK [pin 15] - SDI [pin 14] - SDO [pin 17] - VDD [pin 3] ### U6 — [MAX31865AAP+T](https://www.flux.ai/lcsc/max31865aapplust~s7sa.md) - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Manufacturer Part Number: MAX31865AAP+T - Package or Case Code: SSOP-20_L7.2-W5.3-P0.65-LS7.8-BL - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/max31865.pdf - Role: RTD Amplifier - Part Type: Analog To Digital Converters (ADCs) - JLCPCB Part Class: Extended Part - Voltage Supply: 3V ~ 3.6V - LCSC Part Number: C779509 - Operating Temperature: -40°C ~ 125°C - Role Details: 3.3V SPI RTD converter dedicated to PT1000 input channel - Manufacturer Name: Analog Devices Inc./Maxim Integrated **Pins:** - ~{CS} [pin 16] - ~{DRDY} [pin 1] - BIAS [pin 4] - DGND [pin 18] - DVDD [pin 2] - FORCE [pin 12] - FORCE+ [pin 8] - FORCE2 [pin 9] - GND [pin 19] - GND2 [pin 13] - ISENSOR [pin 7] - N.C. [pin 20] - REFIN- [pin 6] - REFIN+ [pin 5] - RTDIN- [pin 11] - RTDIN+ [pin 10] - SCLK [pin 15] - SDI [pin 14] - SDO [pin 17] - VDD [pin 3] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/nathant15/teensy-coffee-machine-controller~th](https://www.flux.ai/nathant15/teensy-coffee-machine-controller~th).* --- *Generated from [https://www.flux.ai/nathant15/teensy-coffee-machine-controller~th](https://www.flux.ai/nathant15/teensy-coffee-machine-controller~th)*