A customized firmware of CardKB for IchigoJam.

Download the HEX file of the firmware

• Your IchigoJam must be US layout keyboard version.
• Burn the firmware to your CardKB.
  • Search how to burn the firmware yourself.
  • 'Adafruit NeoPixel' library is needed when building the firmware from the source code on Arduino IDE.
  • Caution: I won't be liable for damages arising from the use of this program in any event. Do it at your own risk.
• Connect IchigoJam and CardKB.
  

  CardKB	IchigoJam	USB	PS/2
  Black (GND)	GND	GND	3 (GND)
  Red (VCC)	VCC	5V	4 (VCC)
  Yellow (A4)	KBD1	D+	5 (+CLK)
  White (A5)	KBD2	D-	1 (+DATA)

Delete key (the key at top right) works as Backspace.

It becomes Sym mode by pressing Sym key. Shift key is NOT available.

You can input symbol characters.

Delete key works as Delete.

It becomes Alt mode by HOLDING Sym key.

An alphabet keys is modified with Alt key, so you can input graphical characters.

Delete key works as Backspace.

It becomes Fn mode by pressing Fn key.

A digit key works as function key. An alphabet keys is modified with Ctrl key.

The key assign changes as following:

• CardKeyBoard sample code (official)
• CardKeyBoard PS/2 Interface version by Tamakichi

This program is licensed under MIT License.