RF315/433MHz module. Hardware connection instruction ESP32R4 control has an inner socket for connecting an RF315/433MHz receiver or transmitter. The module itself is not included, you can purchase it on the website or from any other seller. The module connector is standard, and it will not be difficult to install it. This allows you to receive…
Guide for hardware connection for 8 Relays expansion. The 8 Relays Expansion module is based on IC PCF8574. ESPHome component allows you to use PCF8574 or PCF8575 I/O expanders. It uses I²C Bus for communication. Once configured, you can use any of the 8 relays for your projects. Configuration variables: Pin configuration variables:
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…