I bought a USB to ALDL cable a few years back, knowing that between me and my friends, we'd put it to use...but I'm pretty sure it's basically an FTDI cable with an nice male ALDL connector on the end (It may be a 5v rather than TTL level cable?). I haven't done any ALDL to Arduino work yet, though it looks like others have. FYI, you can get Arduino Nano clones off Ebay for about $2...they're super convenient for quick little projects. For actual ECM chip burning, I'm using a Minipro TL866CS...less than $50 on Ebay.
A few weeks ago I was trying to troubleshoot a speedometer on a Ferrari. I tried using a function generator to drive the speedometer with a perfect square wave, but it didn't work. The problem with my test setup turned out to be that my square wave was too "clean" of a signal. The speedometer was looking for the inductive spikes in the signal, since the VSS was a magnet driving a coil. So, I ended up using the function generator to create a square wave that was driving a transistor, that was switching a coil on a relay(I was only using the coil on the relay, for the sake of putting an inductor in the circuit)...then the speedometer came to life. The resulting signal was basically a square wave, but had a spike in it that quickly decayed.I used an Uno last week in attempts to simulate a speed sensor to bench test a cruise control module.
https://youtu.be/iNEZS1nCdUo
I was thinking something for VSS, EST, fuel pump, park/neutral, various solenoid outputs, etc. Obviously, nothing critical...just for the sake of obsessive completeness.What inputs are you missing on the JimStim?
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