I am currently a college student working on a prototype for my TECH class. We are trying to create a device that needs to connect to an iPhone (which I am guessing you use Bluetooth) to receive a signal or a message when a button is pressed on the device.
My two questions are: 1. Which Arduino product should I get to complete this project? 2. How would I go about receiving the signal on my phone?
I have a micro bit at the moment but can't seem to figure it out.