# rfid esp32 relay ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** sebastark - **Created:** 6/16/2025 - **Last Updated:** 6/16/2025 - **Visibility:** Public ## Key Components ### D4 — [Diode_THT_P10.16mm_Horizontal](https://www.flux.ai/jecstronic/diodethtp1016mmhorizontal.md) - Part Type: Diode **Pins:** - A - K ### JP1 — [Jumper 3 Open](https://www.flux.ai/vasyl/jumper-3-open.md) - Part Type: Jumper - Exclude from BOM: false **Pins:** - A [pin 1] - B [pin 3] - C [pin 2] ### K1 — [SRD-05VDC-SL-C](https://www.flux.ai/vasy_skral/srd-05vdc-sl-c.md) - Manufacturer Name: Ningbo Songle Relay - Manufacturer Part Number: SRD-05VDC-SL-C - Part Type: Relay - Datasheet URL: https://www.circuitbasics.com/wp-content/uploads/2015/11/SRD-05VDC-SL-C-Datasheet.pdf **Pins:** - A1 [pin A1] - A2 [pin A2] - COM [pin COM] - NC [pin NC] - NO [pin NO] ### Q1 — [TIP42CG](https://www.flux.ai/lcsc/tip42cg.md) - Part Type: Bipolar Transistors - BJT - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302136_onsemi-TIP42CG_C513077.pdf - Manufacturer Name: onsemi(安森美) - Manufacturer Part Number: TIP42CG - LCSC Part Number: C513077 - Package or Case Code: TO-220-3_L10.0-W4.5-P2.54-L - Product Info Url: https://lcsc.com/product-detail/Transistors-NPN-PNP_ON-Semiconductor-ON-TIP42CG_C513077.html **Pins:** - B [pin 1] - C [pin 2] - E [pin 3] ### U2 — [ESP32-DEVKITC-32UE](https://www.flux.ai/adrian95/esp32-devkitc-32ue.md) - Part Type: Development Board - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32e_esp32-wroom-32ue_datasheet_en.pdf - Manufacturer Part Number: ESP32-DEVKITC-32UE - Manufacturer Name: Espressif Systems - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 3V3 [pin 1] - 5V [pin 19] - CLK [pin 38] - CMD [pin 18] - D0 [pin 37] - D1 [pin 36] - D2 [pin 16] - D3 [pin 17] - EN [pin 2] - GND [pin 26] - GND [pin 20] - GND [pin 14] - GPIO0 [pin 33] - GPIO12 [pin 13] - GPIO13 [pin 15] - GPIO14 [pin 12] - GPIO15 [pin 35] - GPIO16 [pin 31] - GPIO17 [pin 30] - GPIO18 [pin 28] - GPIO19 [pin 27] - GPIO2 [pin 34] - GPIO21 [pin 25] - GPIO22 [pin 22] - GPIO23 [pin 21] - GPIO25 [pin 9] - GPIO26 [pin 10] - GPIO27 [pin 11] - GPIO32 [pin 7] - GPIO33 [pin 8] - GPIO34 [pin 5] - GPIO35 [pin 6] - GPIO4 [pin 32] - GPIO5 [pin 29] - RX [pin 24] - TX [pin 23] - VN [pin 4] - VP [pin 3] ### U3 — [RC522 RFID](https://www.flux.ai/jecstronic/rc522-rfid.md) - Manufacturer Name: Handson Technology - Datasheet URL: http://www.handsontec.com/dataspecs/RC522.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Module - Manufacturer Part Number: RC522 **Pins:** - GND [pin 3] - IRQ [pin 4] - MISO/SCL/Tx [pin 5] - MOSI [pin 6] - RST [pin 2] - SCK [pin 7] - SS/SDA/Rx [pin 8] - VCC [pin 1] ### U4 — [LTV-814S-TA1-A](https://www.flux.ai/lcsc/ltv-814s-ta1-a.md) - Part Type: Optocouplers - Phototransistor Output - Manufacturer Name: LITEON(光宝) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1811151432_Lite-On-LTV-814S-TA1-A_C108051.pdf - LCSC Part Number: C108051 - Product Info Url: https://lcsc.com/product-detail/SMD-Optocouplers_LTV-814S-TA1-A_C108051.html - JLCPCB Part Class: Extended Part - Package or Case Code: OPTO-SMD-4_L4.6-W6.5-P2.54-LS10.3-BL - Manufacturer Part Number: LTV-814S-TA1-A **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/sebastark/rfid-esp32-relay](https://www.flux.ai/sebastark/rfid-esp32-relay).* --- *Generated from [https://www.flux.ai/sebastark/rfid-esp32-relay](https://www.flux.ai/sebastark/rfid-esp32-relay)*