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How To: Power Module

The power module provides two features:

  • Control high power device with robust relay (230 V / 16 A)
  • Connect 5V addressable LEDs (WS2812B) and control them.
note

This tutorial goes over the Relay Control. If you want to learn about LED Strip control you can visit a separate Smart LED Strip chapter.

References

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In the example below we set the relay to the off state after initialization. To switch the state, we use the button.

Power Module Relay Control Code Example

#include <application.h>twr_button_t button;void button_event_handler(twr_button_t *self, twr_button_event_t event, void *event_param){    (void) self;    (void) event_param;    if (event == TWR_BUTTON_EVENT_PRESS)    {        twr_module_power_relay_set_state(!twr_module_power_relay_get_state());    }}void application_init(void){    twr_module_power_init();    twr_module_power_relay_set_state(false);    twr_button_init(&button, TWR_GPIO_BUTTON, TWR_GPIO_PULL_DOWN, false);    twr_button_set_event_handler(&button, button_event_handler, NULL);}

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We have a separate tutorial on how to control Smart LED strip.