MDP 5+1: [Daily Update] Week 8 Day1

List of things done:

Configure failsafe feature:
- Futaba receiver/transmitter has its own failsafe function build-in. Receiver can send out last received or a predetermined PWM signal, upon RC signal loss.
- However, it seems also send a RC loss message to flight control system (Pixhawk), which can activate failsafe function of the ArduCopter.
Testing of ESC failsafe:
- It will reduce motor power for 2 secs, upon signal loss (what do u mean by signal loss). Afterwards it will stop the motor
Discover: moving/lifting UAV will cause a considerable PWM value change, in stabilised mode. This might have something to do with accelerometer.
Testing of servo control
- Find out that ArduCopter RC pass-through function is not working yet. The issue has been raised and will most probably be solved in version 3.2
- Alternative is to use the gimbal control function. This can be easily done in Mission Planner
- Found one working servo
Found out that Transmitter loses power when battery voltage is around 6.4V.
SPICE Service Desk does not provide Matlab. Need to approach TSO/Lecturer.

Things to do:

Verify that MOT_ARM_SPIN is numerical, and THR_MIN is in percentage
Verify that minimum throttle PWM value can be lower than (RCx_MIN + MOT_ARM_SPIN) PWM value. (This is a deduction from previous verification)
Verify that disabling Throttle failsafe function in Mission Planner won't disrupt failsafe activation upon RC signal loss.
To trigger ESC failsafe, is a complete PWM signal loss required (force disarm)? or just the normal armed standby signal will do? Will ArduCopter cut the PWM (motor/servo) output upon RC signal loss?
Tilted UAV, motor at the upper part, should receive a lower PWM, which theoretically can be as low as minimum throttle (defined by THR_MIN)

Purchased/Ordered:

Things needed:

- Chinatown

- School

- Popular

MDP 5+1