| Motor_PID | HG7881 module double H bridge L9110S and L298N drivers library (PID) |
| SD_card_logger | sending debugging logs to sd cards made easier |
| Simpletimer | this is simple struct you can use to manage time |
| SkyMap | Tool that let you calculate star azymuth altitude, in any given time and any given position you can calculate j2000,hour_angle,etc. |