Hello there. This is a Glade airfreshener that will spray in 3 different time intervals, changing of brightness, and with a manual press of a button. My question is the button which is located in the center of the pcb below the word SW4.
I would like to tap into this button so I can manually press it when I convert it to fully automating the device with an esp32 C3. The back of the board has very few solder points and I don’t see any that points to the button. From this image, can anyone tell me which of the contacts is associated with the button if it is visible? How to probe it using a volt meter?? Thank you.
Looks like a typical PCB button, with 4 pins. Pretty common for one side to be GND with the button shorting the other side to it when pressed. Verify this with a voltmeter and if so, then you can simulate a button press quite easily by shorting it to GND with an ESP (making sure both share the same GND).
I am done with automating the air freshener. I have seen the yt video posted above and have followed the guide with my previous air freshener. However, I have found another guide that does not use the driver (motor controller) which is one less item to install. Here is how the newest edition air freshener looks.
I was not able to do the manual button mod as the tactile button solder points are too small. It works out as I have used the button area to mount my aht10 temp sensor. I also wire up for a LD2410C human presence sensor which I am waiting for the part to arrive.
