Picoscope Waveforms

[AK Bob]

I recently purchased a Pico Automotive Lab Scope and have just begun creating and saving a waveform library for my truck.

I plan to acquire these samples while the truck is running great so that in the event of a problem or concern, I can repeat the relevant tests and compare the waveforms.

Examples are cam/crank signal relationships, Injector waveform, fuel pump current trace, CAN Bus, alternator ripple, starter motor, sensor signals…..etc.

I thought I would start this thread to discuss with anyone interested or build similar waveform libraries.

I will be happy to share any of my captures with anyone who needs them.

Fuel Pump.jpg


2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, and 50 Gallon auxiliary fuel tank.

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[Badger2078]

This is a fascinating concept but not likely to have many lookers.

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[AK Bob]

This is a fascinating concept but not likely to have many lookers

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Thanks, you are probably correct; I just thought I would throw it out there and open it up for discussion.


2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, and 50 Gallon auxiliary fuel tank.

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[Collin42]

I like this.

Hopefully, others chime in.

Makes a lot of sense to me.

But I don’t know that much, hahaha.


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[Chrisn162001]

We have a forum with FCA that started a thread of known good waveforms.

At some point when I finally get free time, I’ll weed through them and pull the Cummins ones.

Pico scope is an awesome tool it’s saved me countless hours on diags when FCA decides they won’t share diag info or are completely wrong on the info they do a release.


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[Electrojake]

I recently purchased a Pico Automotive Lab Scope and have just begun creating and saving a waveform library for my truck.

Outstanding!

A comprehensive library of sensor waveforms would be of great value!

Here's a couple of links that may be of interest to you. . .

https://hackaday.com/2020/07/02/cust...-to-learn-can/

And...

https://www.csselectronics.com/

Keep up the good work and keep us posted!
-Jake-

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[ricky_bobby]

^^EJ! Good to see you hear brother!

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[Electrojake]

^^EJ! Good to see you hear brother!

I check in here from time to time when the pap at CF dot com gets a bit too deep.

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[AK Bob]

Crank and cam relationship with pilot and main injector #1 current for reference.

Cam Crank Injector 1.jpg


2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit and 50 Gallon auxiliary fuel tank.

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[Electrojake]

Crank and cam relationship with pilot and main injector #1 current for reference.

I'd be interested in seeing the output waveform of something like a NOx sensor.

It seems like it would be near impossible to get a stable trigger on.

Another favorite of mine would be to see variances in the output of the IBS (intelligent battery sensor), pin 1 orange wire.

Thanks,
-Jake-

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