i2c mini keyboard 55 keys
Design by: 39163
This is a prototype!
Parts:
- 1 x MCP23017 (28-pin SSOP)
- 1 x 0.1uF (0805)
- 55 x diode (0805)
- 55 x tactile switch (4 pins 6.5mm x 4.5mm(pin distance))
example: ADTS62KV
- 1 x 6 pin header (2.54mm)
- 3 x 3 pin header (2.54mm)
