| Table of Contents | ||
|---|---|---|
|
Assembly Checks
...
- Verify no connector pins look soldered together
...
- Verify no pins on STM32 look shorted
...
- Verify all components for Flight 5.7V Variant are fitted
...
- Solder on radial capacitor for input buck
...
- Solder on test input leads for buck testing
...
- Verify pin 1 on chips aligns with indicator
...
- Apply a few plug/unplug cycles on connectors
...
- to test solder joint quality
Power Testing
...
DMM
...
- Make sure no power rails are shorted to ground or each other with DMM
...
- Slowly increase voltage (with low current limit, 100mA max) on buck input, check its not drawing excessive current/power (ensure no output load)
...
- Probe the output net for voltage stability with DMM
...
- Slowly increase voltage on internal
...
- 5V rail
...
- and verify the internal
...
- 3.3V rail turns on
...
Power Testing with Oscilloscope
- (LDO functionality)
E-load
- Perform a load test on buck converter: use
...
- an e-load to fully saturate the buck and verify you get the output current expected
...
- (up to 1A)
- Step the load and perform efficiency calculations: 12V, 24V, 50V
...
Oscilloscope
- Load transient testing: Step the e-load and view the transient response from buck converter output.
...
- Battery inrush test: simulate hot-plugging a battery on the input terminal and view transient voltage spike/oscillations.
...
- Then, handoff to firmware for testing.
Firmware Testing
...
- Attempt to flash all boards
...
all leds functional
...
pwm output functional
...
CAN circuit functional
...
- Verify functionality of all LEDs
- Verify the PWM output
- Verify CAN circuit functionality
- Pixhawk servo CAN system test
...