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oldcorollas
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Kita-Ku, Sapporo, Japan
Registered:
January 2003
 
Re: testing Jaycar HEI tach signal for Megasquirt Mon, 13 December 2004 03:57 Go to previous messageGo to previous message
tried the HEI tach output.
seems to be pretty good up until 6000rpm, then i get a couple of small glitches.... i think i'll do an extended datalog (like 30mins... other ECU's would love to have that option Razz) and go thru and see how stable the signal is..

otherwise, it ill be resistors coil -ve.

looking at the schematics, it doesn't make sense to change R10 IF you have the Dave cap... the Dave cap is before R10, so it absorbs noise before R10. if i put resistor before dave cap (as i was testing) then it slows the charging rate of dave cap...

since i'm using microphone cable and RCA plugs for tach input, i'll just make a short 'resistor lead' so i can swap it out easily..

Cya, Stewart

ps, seems the KE15 tach is reasonably accurate.... up to 7500rpm anyway Wink



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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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