ESP32R4 controller have connection socket for RF315/433MHz receiver/transmitter module. (6) RF-receiver header connected to GPIO27 (ESP32). Firmware: For firmware settings follow these instructions: ESPHome/HASS settings and RF communication Guide. RF315/RF433MHz KeyFob or Wall Switch. TASMOTA settings and RF communication Guide. RF315/RF433MHz KeyFob or Wall Switch.
This guide will help you connect and configure the relay expander to the ESP32R4 controller. The relay expander increases the number of relays controlled by the ESP32R4 controller. Can connect up to 12 expanders with 8 relays each. Hardware: Power supply select: I2C address selection： For each I2C device, you need to select a UNIQUE address. Use…
Update over the serial connection using a serial-to-USB adapter: CH340, FTDI FTR232, CP2102/2104, PL2303… Some adapters can be switched between 3.3V and 5V for the data pins, but still provide 5V on the power pin which will irreparably destroy your device. You MUST make sure the data (RX and TX) logil level 3.3V and VCC pins are…