ESP32 CAN Dev board for FRC.

• 5.5-30V input voltage range by TPS5450
• WAGO connector
• ESP32-WROOM-32D MCU
• RGB LED for diagnostic
• 2 user button (with one being BOOT)
• TJA1050 CAN transceiver and switchable termination resistor
• Relay for doing something
• SPI pin for RC522 (RFID battery tracking)
• Two I2C port using same pinout as REV expansion hub (connected together)

Code, CAD models: https://github.com/sikaxn/FRC-Custom-CAN-Sensor/tree/dev-board/pcb

Manual: https://github.com/sikaxn/FRC-Custom-CAN-Sensor/wiki/800.-IronMaple-ESP32%E2%80%90FRC%E2%80%90devkit-Manual

Design file: https://oshwlab.com/sikaxn/seal-v2-dev-board

Factory test code: https://studenttechsupport.com/customcanespfw/factory/

Important reminder of ESP32 radio

Per FRC Game Manual (2025) R707 and E301, Wi-Fi radio should not be used within competition area and Bluetooth radio should not be used if robot is competing on the field. As for now, none of the code utilizing ESP32 have any wireless capability. However, if further update enabled this capability, the use of such device and software should be carefully planned and coordinated to stay in compliance with the game manual.

For more information, visit

https://github.com/sikaxn/FRC-Custom-CAN-Sensor/tree/main?tab=readme-ov-file

https://www.chiefdelphi.com/t/custom-can-sensor-esp32-development-board/505038

https://www.chiefdelphi.com/t/custom-can-sensor-some-good-progress/501764/1

https://www.chiefdelphi.com/t/rfid-battery-tracking-progress-updates-video-demo-update/502847