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Old 09-11-2022 | 10:17 PM
  #780  
1967brutus
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Originally Posted by Cat 1
Dave, Do you use the RCExl tach output for an RPM feed into OpenXsensor? I seem to be having trouble with getting a good signal there - Its very noisy (high frequency). If I Play with the scope settings I can see the pulse for the ignition but lots of noise on top of it.. Is a filter required?

Im was assuming the signal is an +5v / 0V situation like the Trigger Hall but it seems to be A weak (low voltage/current?) signal. Should be signal to pin 8 and ground to ground correct...
Strange... I get a pretty good readout from the tach output with the FrSky temp/rpm board, and that board is not even made for use in combination with ignitions (it is ingended for brushless electrics).
Meaning, the signal is probably OK, because plenty people use that set-up.
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