Sender module

Stages of flight

Preflight - Remove before flight button or smthing like that
- no communication, blocked parachute ejection, all systems down
Ready - Signal from groundstation
- sys check (modules calibration, battery check, atd...), blocked parachute ejection, wait for launch pin removed, only send data, do not save them
Launch - Removed pin from the rocket
- launch, all systems sending and saving data on sd card
Apogee - Detected that rocket is in apogee with accelerometer
- parachute ejection, all systems working, gps check and height check
Return - Rocket has no velocity
- all not needed systems shutdown/sleep, buzz on, gps sending location, battery check, turn off gyro and accelerometer