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FreeEMS revision A version 1 first edition PCB feeler 
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TO220 - Visibile

Joined: Mon Sep 15, 2008 3:53 am
Posts: 13
depending on price and features I may want a few cars worth.

88' Porsche 924s 4<-4cyl
92' Alfa romeo <-V6cyl 60degree
90' Nissan 240<-4cyl
XX' Gm series II L67 <-V6cyl 90degree
99' Miata <-4cyl

maybe few lawnmower engines worth too, but we'll see a little latter.

Thu Sep 18, 2008 4:18 am
QFP80 - Contributor

Joined: Thu Sep 04, 2008 1:54 pm
Posts: 40
  1. On board IGBT ignition drivers - Preferred but can handle them being in the same case (I dont want multiple boxes)
  2. On board low Z injector drivers - Must for me, I dont want to replace my brand new Racetronix 120lb injectors and resistors are a turn off and generally suck overall IMHO
  3. Thermistor self heating prevention :-p
  4. NO thermistor self heating prevention
  5. Current feedback circuitry on injectors - Probably yes
  6. NO current feedback circuitry on injectors
  7. ONLY SMD components - Slightly opposed since some SMD look like a bitch to solder but ive never tried so I dont know first hand
  8. ONLY TH components - Neutral
  9. SMD components supported - Neutral to positive, I can handle some SMD
  10. TH components supported - Neutral, I like TH but they do make for a bigger board
  11. X primary fuel channels required/preferred - Require 4 Low Z
  12. X ignition channels required/preferred - Require 2 (wasted spark), 4 would be great for future "just in case"
  13. X auxiliary low current low side drives preferred and required OnOff / PWM - Boost control!!! Water injection solenoid control would be nice, probably two so that there can be an IC sprayer. Water inj/IC sprayer can be general outputs though
  14. X auxiliary high current low side drives preferred and required OnOff / PWM - Nothing jumps to mind beyond a way to control a pump for water injection, so probably 10-15 amps for a Shurflo... A low current relay output would be ok here as well
  15. How many boards? - Ill probably buy 2

Id also really like a knock input, I am about to buy a Link Knockblock so onboard filtering isnt a must now, just a 5 volt input. Also, 2x hall inputs (60-2 wheel with hall sensor, and a hall cam trigger).

Thu Sep 18, 2008 10:52 pm
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Joined: Tue Jan 15, 2008 2:31 pm
Posts: 15376
Location: Home sweet home!

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