do i need a arduino microcontroller or should i go for the cheapest microcontroller i can find?
for iOS only volume up/down keys need to be activated, how could camera shutter release be achieved on Android devices? is it doable with a simple microcontroller+bluetooth module?
(first electronics project, so a lot of questions)
It's going to cost you a lot more than $3.69 for parts - never mind the many hours of your time. And it won't be nearly as neat.
Do you know, or can you find out, what data is sent over the Bluetooth connection to make the receiving devices work? Without that knowledge you can't even start.
Thanks for replying!
I've already signed a devil's contract with myself to spend countless hours to be frustrated with every steps of the way of this project and spend way more than $4, too late to get out of it!
for iOS, it's just a volume up/down button press, I'm not sure for android yet
do I need to buy the main arduino board(pro mini seems to be the smallest) and the bluetooth module? or any cheap microcontroller will do?
Did you ever figure it out? I'm trying to build the exact same project. I'm looking to create one that send custom keys to my desktop. I was able to use that same shutter from amazon with a simple app that takes the volume up key and converts it to different key board shortcuts. I even got around the only one button thing by sending different keys based on single, double, triple click etc. works great. But now I'm ready to build my own and id like to be able to send my own custom keys, like via 4 or 5 buttons.