| functional_button | simple button library |
| Mapf | extended arduino map() function |
| 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 class you can use to manage time |
| SkyMap | Tool that let you calculate star azimuth,altitude, in any given time and any given position. You can calculate j2000,hour_angle,etc. |