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OpenMarine › OpenPlotter › How do I...? v
GPIO app and pulses

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GPIO app and pulses
splimp Offline
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#1
2025-02-12, 06:34 PM
Hello,
I'm nearly finished upgrading my RPi4-based setup to the RPi5. For the most part, everything is running well. However, I can't get the pulses tab in the GPIO app to work.
I have an engine RPM sensor (Hall effect & magnet) connected to GPIO17. The sensor's parameters appear to be accepted by the GPIO app, but no SignalK key is generated. Other sensors are working fine with GPIO, so it seems to be an issue specific to the pulse section.
Does anyone know if this might be fixed in the future? I considered running RPM data via an ESP32 with SenseSP but would prefer to keep this setup hardwired.

Thank ye!
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MrGorsky Offline
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#2
2025-10-11, 11:23 PM
(2025-02-12, 06:34 PM)splimp Wrote: Hello,
I'm nearly finished upgrading my RPi4-based setup to the RPi5. For the most part, everything is running well. However, I can't get the pulses tab in the GPIO app to work.
I have an engine RPM sensor (Hall effect & magnet) connected to GPIO17. The sensor's parameters appear to be accepted by the GPIO app, but no SignalK key is generated. Other sensors are working fine with GPIO, so it seems to be an issue specific to the pulse section.
Does anyone know if this might be fixed in the future? I considered running RPM data via an ESP32 with SenseSP but would prefer to keep this setup hardwired.

Thank ye!

Did you ever get anywhere with this?  I'm in the same boat (Ha!) trying to get the pulses from my paddle wheel log to register in SIgnal K.  Is it currently not working?
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SCarns Offline
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#3
2025-10-14, 04:19 PM
(2025-10-11, 11:23 PM)MrGorsky Wrote:
(2025-02-12, 06:34 PM)splimp Wrote: Hello,
I'm nearly finished upgrading my RPi4-based setup to the RPi5. For the most part, everything is running well. However, I can't get the pulses tab in the GPIO app to work.
I have an engine RPM sensor (Hall effect & magnet) connected to GPIO17. The sensor's parameters appear to be accepted by the GPIO app, but no SignalK key is generated. Other sensors are working fine with GPIO, so it seems to be an issue specific to the pulse section.
Does anyone know if this might be fixed in the future? I considered running RPM data via an ESP32 with SenseSP but would prefer to keep this setup hardwired.

Thank ye!

Did you ever get anywhere with this?  I'm in the same boat (Ha!) trying to get the pulses from my paddle wheel log to register in SIgnal K.  Is it currently not working?
I just switched form Pi4 to Pi5 and had issues with PWM on GPIO. I found a solution that fixed the problems. Try running the following scripts:

sudo apt remove python3-rpi.gpio
pip3 install rpi-lgpio
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