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Servo PWM signal does not switch logic levels, remains high #8

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wolframalexa opened this issue Aug 6, 2021 · 1 comment
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A01 Fix Will be fixed in version A01 bug Something isn't working

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@wolframalexa
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Problem
When running the sampleproj/servo_pwm.py script, SERVO_PWM remains high, even as the GPIO07 pin outputs a PWM signal.

Release
A00, no modifications

Observed Behavior
Servo PWM remains high even when PWM script is run.

GPIO07 at 40-pin header:
gpio7 configured0

SERVO_PWM at servo header:
gpio 7

Root Cause Theory
The pullup could be too strong; the transistor connection may not be consistent across boards. This is another issue that switching to a larger package transistor should fix.

Suggested Next Steps

@wolframalexa wolframalexa added the bug Something isn't working label Aug 6, 2021
@wolframalexa wolframalexa self-assigned this Aug 6, 2021
@wolframalexa wolframalexa added the A01 Fix Will be fixed in version A01 label Aug 9, 2021
@wolframalexa
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Additional boards also have this issue. Likely due to transistor misalignment - will change for A01.

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Labels
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