Uses 328PU to turn off light or turn on as needed, Using much software. But it has micro wave detection, pir detection, audio detection, and light detection.
Circuit to control an exhaust bypass valve motor via an OEM Mercedes W124 defogger switch.
W124 defogger switch is a momentary toggle switch (SPDT) with center off. Pressing the switch up, opens the bypass valve powering the motor via the [timers.shop relay](http://timers.shop/Multi-Functional-5V-20V-Time-Delay-Relay-Timer-5-amp_p_12.html). The timer relay only powers the output for a programme...
This PCB is designed to be a flexible way of building wireless modulair sensor and switching devices capable of sending and receiving data over various protocols. The heart of this PCB is the amazing ESP wifi chip.
This board gives you access to most of its GPIO pins, as well as the I2C protocol and the ADC. It's possible to program the ESP while it is soldered to the board.
While it is possible...