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rusefi / alphax-4chan

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RevH Tacho output not working but changing between 5v/12v #143

Closed ElDominio closed 1 year ago

ElDominio commented 1 year ago

As stated, tacho does not work (no wave on oscope) but switching voltage in Fancy Hardware DOES change voltage.

Was a pin changed from revF to revH to drive the tacho?

rusefillc commented 1 year ago

@ElDominio do you know resistance of that tach? Do you want me to get same real tachometer for tests?

ElDominio commented 1 year ago

Test 1: tacho output set to 12v and pin A4

IMG_20230713_204952__01.jpg

IMG_20230713_204948.jpg

Test 2: tacho output using Aux10, internal 4chan

IMG_20230713_205604__01.jpg

IMG_20230713_205540.jpg

ElDominio commented 1 year ago

Are scopes useful? Any update?