Changes by last author:
Added:
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** 100k from signal
** 1k to GND * 1..10uF non-polarity (not electrolitic! a cap from GenBoard/VerThree/RescueKit is fine) cap to the soundcard input |
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** R1=100k from signal
** R2=1k to GND * optional: 1..10uF non-polarity (not electrolitic! a cap from GenBoard/VerThree/RescueKit is fine) cap to the soundcard input |
| Note that there is a high-pass filter involved, so the squarewaves are changed in a predictable way: possible to evaluate waveforms, but takes some getting used to. For us it immediately made temporary loss of injector signal (due to fully pressed TPS or processor reset) visible. |
| Note that there is a high-pass filter involved (the soundcard cuts freq below 20Hz), so the squarewaves are changed in a predictable way: possible to evaluate waveforms, but takes some getting used to. For us it immediately made temporary loss of injector signal (due to fully pressed TPS or processor reset) visible. |
| * ElectronicDesign/TriggerSignalGenerator very useful |