I’m likely in over my head but I’m sure I’ll learn a lot in the process. But I also don’t want to blow up everything before I get started so I need some help on power supply.
I’m going to hack my pitching machine to allow control using bluetooth. My plan was to use an Arduino Uno, a Bluefruit Bluetooth BLE Shield, and a Particle Relay Shield. I’m not committed to this list but it’s what I have sitting in my pile of unused or previously used electronic devices.
I plan to power the pitching machine itself (which uses a 1/4 hp motor and a smaller ball feed motor) with a deep cycle battery and inverter. It’s been suggested that I power the BLE and related control devices separately with their own power source but I’m having a hard time wrapping my head around the various power requirements. My understanding is the Uno and BLE shields are based on 5V while the Relay Shield is based on 3.3V since it was designed to be used with the Particle Photon. I’ve looked at the docs for the Relay Shield and I can’t determine if I can input 5V to the pins or if that will fry the relays or shield.
I could use a nudge in the right direction. Also, I don’t mind rethinking the electronics since it would be cheaper than frying everything and replacing later. Thanks in advance.