Hi there, I’m a software developer and I’m just dipping a toe into the hardware world with the Photon. My project is to turn on an LED and play a sound on a piezo speaker that’s triggered by a url request. I’ve got all the programming done and it’s all working on my Photon kit.
I’m trying to make the footprint as small as possible, so I’d like to have the device powered by a coin cell battery. I’m looking at this coin battery holder:
But it seems like most coin batteries only put out 3v and I need at least 3.5v to use the VIN pin on the Photon.
Are there any tutorials on how to power a Photon with a coin battery? Do I need a power shield or is there a simple conversion I can do on my own?
Also, the piezo is not loud enough for what I want, and the LED is not bright enough. Are there any parts suggestions for louder, brighter options? This is the buzzer I’m using:
And the LED is just one that was packaged with the Photon kit.
Thanks in advance!