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