Electronics
To be fully portable and independent, the whole system needs to be battery powered so it can be used outside without the need for mains connection. That means the batteries need to power the raspberry pi, the 2 motors and the IMU. This requires a relatively large current demand.
A driver board for the 2 motor drivers, an IMU board and a power board capable of safely discharging and charging the batteries were designed to accommodate the electronic requirements of the project.
Let us look at the electronics system in the following sub chapters:
Drivers Pin Connections
| Wiring Pi | Driver Az | Wiring Pi | Driver EL | |
|---|---|---|---|---|
| enable | 0 | 11 | 1 | 12 |
| dir | 2 | 13 | 4 | 16 |
| Step | 3 | 15 | 5 | 18 |
| ms1 | 12 | 19 | 6 | 22 |
| ms2 | 13 | 21 | 10 | 24 |
| ms3 | 14 | 23 | 11 | 26 |
IMU Pins connections
| IMU | Wiring | Raspberry Pi |
|---|---|---|
| SDA | 8 | 3 |
| SCL | 9 | 5 |
| X | 15 | 8 |
| Y | 16 | 10 |
SatRot - Taking everyone to space!!!