The GPIO breakout is the unique feature of the device. I’ve seen it used as a CNC pendant, and as a MIDI controller. In fact, the JCPM can be used without a computer, perhaps as a standalone controller if you’re so inclined. The Pro Micro board is attached to the bottom via a socket, you you can swap it out as needed. Power and ground on these pin arrangements are assignable via solder pads, making them compatible with a variety of accessories. Of course, you can still use the I2C pins for other purposes, and a second output arrangement is available for hacking. +5V power and GND are also broken out, and the format just so happens to fit the connector for a PC fan, for cooling at the click of a key switch! Two of these are used to power an optional I2C display, but three are totally free for you to use for whatever you like. But wait, there’s more! (GPIO/Hacking)īesides being a competent computer interface doodad, the JCPM2 also has 5 GPIO pins broken out. Long story short, you can use this ‘pad for just about anything you like interface-wise. It can also be pressed down for an additional input. Additionally, a rotary encoder is prominently featured in the design, and can also emulate keystrokes etc when rotated forwards or backwards. It emulates a keyboard, and each of its 8 programmable keyswitches can be programmed (via the Arduino IDE) to act as a keystroke, combination of keystrokes, or sequence of keystrokes. The JC Pro Macro 2 is a mechanical macro keypad based on the ATmega32u4 Pro Micro board. The original JC Pro Macro is for sale here, though likely will not be restocked when parts on-hand are gone. This listing is for an item from a finished Kickstarter campaign.
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