BT <-> I2C bridge

When you are starting a new electronics project, you often need a bunch of controls to trigger things. Like, you want to have 4 or 6 or 10 buttons to do *things*.

This puts you in a complicated position because it means you need to build a thing before you know if the thing is worth building. Wiring 10 buttons is **a lot of work!** so let's not do that.

Using bt2i2c then anything that can talk I2C (and that is a very low bar!) can use a full wireless keyboard, as long as you

connect three pins!

The basic concept is:

• Get a Pico W
• Get a Screen (optional, but useful)
• Get a cheap BT keyboard (classic or BLE, both work)
• Get the bt2i2c firmware onto the Pico W
• Connect your project to the Pico W via I2C

Then, on your project side, use the client for the BBQ20 or BBQ10 keyboards from solder party. This is (supposed to be) 100% compatible!

And that's it, you get keys via I2C, and can control your new project at will.

The screen will show you when it's scanning, or connected, or if you need to type a PIN. If you don't have a screen, use the pico's USB serial port.