+-------------------------------------------------+
| Raspberry Pi 3 A+ |
| |
| +-----------+ |
| I2C SDA <----| BlinkM | |
| I2C SCL <----| Smart LED| |
| +-----------+ |
| |
| GPIO 17 <----| CLK of Encoder 1 |
| GPIO 18 <----| DT of Encoder 1 |
| |
| GPIO 22 <----| CLK of Encoder 2 |
| GPIO 23 <----| DT of Encoder 2 |
| |
| GPIO 24 <----| CLK of Encoder 3 |
| GPIO 25 <----| DT of Encoder 3 |
| |
| GPIO 4 <----| Limit Switch |
| |
| GPIO 27 <----| Map Switch |
| |
| USB Port <----| USB Mouse |
+-------------------------------------------------+