CobraV2/sender_module

Sender module

Stages of flight

1. Preflight - Remove before flight button or smthing like that
   • no communication, blocked parachute ejection, all systems down
2. 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
3. Launch - Removed pin from the rocket
   • launch, all systems sending and saving data on sd card
4. Apogee - Detected that rocket is in apogee with accelerometer
   • parachute ejection, all systems working, gps check and height check
5. Return - Rocket has no velocity
   • all not needed systems shutdown/sleep, buzz on, gps sending location, battery check, turn off gyro and accelerometer

Modules

• nRF24L01 - Communication with groundstation
• L76K GPS - GPS sensor for gps data
• 10 DOF IMU - Gyroscope/Accelerometer, Temperature, atd.
• ?INA-219 - Battery data
• ?SD card reader - Write all recieved data to the SD card
• ?Buzzer - To find our rocket after launch

Tasks

• Ejection mechanism
• PCB for our computer
• force parachute ejection
• if cable connected return back to ready stage
• send signal of listening
• wait for recieve