JimStim 1.4 Schematics and pin usage

Building and using the Stimulator to test your Megasquirt

Moderators: jsmcortina, muythaibxr

Post Reply
kritip
Master MS/Extra'er
Posts: 712
Joined: Thu Dec 20, 2007 1:35 am
Location: Nuneaton, UK

JimStim 1.4 Schematics and pin usage

Post by kritip »

Mainly aimed at Jean:

As per another of my threads I have removed some of the grounds from the MS DB37 to use as extra outputs.

I am making sure that these aren't conflicting with the JimStim (just bought a fw 2.0 chip from you and serial cable from the UK :) )

I have removed GND pins 12 to 19 from the MS.

Looking at the JimStim 1.4 schematics, 12 to 19 are not connected! How lucky is that!

Upon testing with the multimeter though, pin 19 is connected to GND despite what the schematics say. Not a big problem, I can remove the one pin. I just wanted to check that 12 to 18 aren't connected elsewhere?

Cheers for any help :)

Kristian
Constantly evolving;
4 cylinder n/a, 16v 1368cc Fiat Seicento
racingmini_mtl
Super MS/Extra'er
Posts: 9128
Joined: Sun May 02, 2004 6:51 am
Location: Quebec, Canada
Contact:

Re: JimStim 1.4 Schematics and pin usage

Post by racingmini_mtl »

Actually, the link for the V1.4 schematics was wrong (now corrected) and this is the correct one: http://jbperf.com/JimStim/jimstim_v1_4_schem.png. As you can see, pin 19 is connected to ground but pins 12 to 18 are not connected to anything.

Jean
jbperf.com Main site . . . . . . . . . . . . . . . . . . . . . . jbperf.com Forum
Image
kritip
Master MS/Extra'er
Posts: 712
Joined: Thu Dec 20, 2007 1:35 am
Location: Nuneaton, UK

Re: JimStim 1.4 Schematics and pin usage

Post by kritip »

I thought something wasn't quite right lol.

Thanks x100 Jean. Very helpful and very quick reply :)
Constantly evolving;
4 cylinder n/a, 16v 1368cc Fiat Seicento
Post Reply