Choose a board example
| Board / purpose | Tutorial |
|---|---|
| UNO R3 + W5100, channel messaging | Ethernet transceiver |
| UNO R3 + W5100, remote control | Ethernet button |
| ESP32, basic button event | Basic messaging |
| ESP32, one device by CID | CID LED |
| ESP32, coordinated outputs | Group LED |
| ESP32-S3, WS2812 | RGB |
| ESP32-C3 Super Mini | C3 button and LED |
| ESP8266 D1 mini | D1 mini |
| ESP-01 | Relay and LED |
| ESP32-C3, eight-address group | Iris |
Install the correct board core and libraries, then inspect the sketch's pins and active levels before wiring. Use the same IOSignal server on the board and controller. The JavaScript baseline is 7.2.0; Arduino library versions are independent. See validation scope.