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| Relay |
ESP-IDF driver for Soldered relay boards, wired directly to GPIO pins or connected over I2C via Qwiic/easyC.
- /src - source files (.c)
- /include - header files (.h)
- /examples - examples for using the library
basic- single relay wired to a GPIO pin4channel- four relays wired to GPIO pinsqwiic- one Qwiic/easyC relay board channel, driven over I2C
- other - idf_component.yml manifest file for ESP Component Registry
GPIO-wired relays (basic, 4channel examples): connect the relay module's control pin to a GPIO, then call relay_init() followed by relay_on()/relay_off()/relay_toggle().
Qwiic/easyC relay boards (qwiic example): connect the board via its Qwiic connector to an I2C bus, then call relay_init_qwiic() with an already-initialized i2c_master_bus_handle_t, the board's I2C address (default 0x30, switch-selectable on the board), and the channel to control. After that, the same relay_on()/relay_off()/relay_toggle()/relay_get_state() calls work identically regardless of backend.
Hardware design, BOM, gerbers, and 3D files for these boards are in their respective hardware repositories, e.g. 1-channel-relay-board-hardware-design and 1-channel-relay-board-qwiic-hardware-design.
Access library documentation here.
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