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Toymods » Tech & Conversions » testing Jaycar HEI tach signal for Megasquirt

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oldcorollas
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
 
Re: testing Jaycar HEI tach signal for Megasquirt Fri, 10 December 2004 06:41 Go to previous messageGo to previous message
cool, thanks for the feedback Chris Smile do you have a Dave cap installed? (and the other diodes/caps?)

i'm using effectively the 2.98MS code, modded to have EGO turn off at 65kpa, rqther than a TPS value.
i added the dave cap to try and filter it a bit, but it had absolutely no effect.

the difference between the points alone and the HEI shows that it is the HEI inducing a lot of noise (coil ringing?)

figured it was better to try a whole bunch of different values to see the effect (and results are interesting!!) seems that i could use anything from 10K to 50K with no issues (50K still ran to 8000rpm) i was logging using 20ms also, resulting in 18 samples per second.

i am going to swap R10 for a 15Kohm (1watt) and then fo extended datalogs and see if there are any issues...

does MSnSe have the 2.98 mod to code to prvent false triggering for 'x' time after a pulse is detected?

Cya, Stewart

[Updated on: Tue, 14 December 2004 06:10]

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SubjectPosterDate
Read Message   testing Jaycar HEI tach signal for Megasquirt oldcorollasFri, 10 December 2004 05:52
Read Message   Re: testing Jaycar HEI tach signal for Megasquirt IRA11YFri, 10 December 2004 06:09
Read Message   Re: testing Jaycar HEI tach signal for Megasquirt RA40CelicaFri, 10 December 2004 06:15
Read Message   Re: testing Jaycar HEI tach signal for Megasquirt  oldcorollasFri, 10 December 2004 06:41
Read Message   Re: testing Jaycar HEI tach signal for Megasquirt TA-022Fri, 10 December 2004 11:32
Read Message   Re: testing Jaycar HEI tach signal for Megasquirt oldcorollasFri, 10 December 2004 12:41
Read Message   Re: testing Jaycar HEI tach signal for Megasquirt RA40CelicaFri, 10 December 2004 23:13
Read Message   Re: testing Jaycar HEI tach signal for Megasquirt oldcorollasSat, 11 December 2004 02:29
Read Message   Re: testing Jaycar HEI tach signal for Megasquirt oldcorollasMon, 13 December 2004 03:57
Read Message   Re: testing Jaycar HEI tach signal for Megasquirt gearb0xFri, 10 December 2004 12:52
Read Message   Re: testing Jaycar HEI tach signal for Megasquirt oldcorollasFri, 10 December 2004 12:58
Read Message   Re: testing Jaycar HEI tach signal for Megasquirt gearb0xFri, 10 December 2004 13:15
Read Message   Re: testing Jaycar HEI tach signal for Megasquirt RA40CelicaMon, 13 December 2004 23:31
Read Message   Re: testing Jaycar HEI tach signal for Megasquirt oldcorollasTue, 14 December 2004 06:09
Read Message   Re: testing Jaycar HEI tach signal for Megasquirt oldcorollasTue, 14 December 2004 06:12
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