I have a garage door wall button which has 13.6v across. This is the typical wall button most of us have in the our homes to open and close the garage from inside the house. I want to replace the wall button and connect a ESP8266 IoT chip to control from smart phone and this chip only need between 3.3v-5v. I am using a DC-DC buck converter to step down 13.6v to 3.3v. However nothing happening when I connect the buck converter to wires coming from garage motor. When I use the multimeter to measure the voltage across the output of buck converter then the voltage drops to 2.2v which is simply too low and I cannot change it.
Should I be using different type of DC-DC converter to run the 3.3v ESP8266 chip directly using the garage wall button wires? I want to avoid adding batteries and looking for ways to power the IoT chip directly.
Any help or nuggets would be highly appreciated?
Should I be using different type of DC-DC converter to run the 3.3v ESP8266 chip directly using the garage wall button wires? I want to avoid adding batteries and looking for ways to power the IoT chip directly.
Any help or nuggets would be highly appreciated?