![]() ![]() ![]() There is a chance I would make more than four, and if that is the case each would need to be set so they don't step on each other's keystrokes. This will basically be a custom game controller, and I do need 4 separate ones. Power the module with 3-16VDC, and pair it to the computer, tablet or phone just as you would any other BT device This breakout acts just like a BT keyboard, and works great with any BT-capable device: Mac, Windows, Linux, iOS, and Android. ![]() If your computer can talk to a bluetooth keyboard, well, there you go.Ĭheck out this: Bluefruit EZ-Key - 12 Input Bluetooth HID Keyboard Controller. This would mean that you don't need a transmitting and receiving arduino. Your transmitting arduino would ask each MPR121 in turn about what pads are being touched, and it would decide what key that counts as.įurthermore, if you want a wireless connection, the arduino might be able to emulate being a bluetooth keyboard. According to the datasheet, each can be set up to use i2c address 5a, 5b, 5c or 5d, so you can just hook all four of them onto the i2c bus].Īlternatively, you might want you use something like this i2c multiplexerĮither way, this means that you don't need that rotary encoder. You really don't need one arduino for each one. ![]()
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