super-ss

I am working on my project for my car. It's 7" LCD tft with arduino to read all OBD2 pids from LS1 ecu and show it on the screen.


I used Arduino Mega 2560 with 7" LCD touch screen to show gauges and control the Boost and another features.


I will update the this post with my updates


What I added to read:

• RPM
• Speed
• IAT
• ECT
• Timing
• MAP
• Boost
• MAF
• AFR through analog
• Check Engine

What I will control:

• Boost
• Meth Injector
• Engine Cut off for saftey

Krom

looks pretty sweet

super-ss

Thank you Krom

super-ss

Testing the connection between E38 ecm and Arduino

01ssreda4

iTrader: (96)

Great idea, i see this as becoming more popular in the upcoming years

charles1911

Sultan Al Abdoh,

Could you point me to resources on the types of signals that were outputted by the PCM/ECU?
Also very interested in the coding used to interpret these signals.

JoeNova

This post in 18 months old, theres a good chance he isn't around anymore.

If you want to be able to read an OEM PCM with an arduino, look up OBDuino. It will get you started.

charles1911

Thank you sir!

gametech

iTrader: (1)

When I want OBD gauges to show up, I use a bluetooth elm adapter paired to my android car radio with one of the "torque" style apps.

JoeNova

Torque has its advantages. The arduinos have more.

gametech

iTrader: (1)

I see no reason to run a dedicated screen to a limited use gauge setup when I can use said screen to stream netflix or youtube between runs. Obviously, this wasn't possible way back when this thread started.

JoeNova

Because your screen can't control 50+ outputs, relays, PWM, take input logic from VR circuits, dozens of 5v inputs, square wave and sine wave inputs, communicate with aftermarket and OEM PCMs via CAN BUS, and so much more...

My 7" screen will do PWM boost control, 2 and 3 step, trans brake control, boost based traction control, read VSS, VR ABS sensors, multi-stage nitrous control, progressive nitrous control, methanol pump control, progressive meth pump, 2nd fuel pump, PWM fuel pump and fan control, take input from 100 PSI fuel oil and whatever other pressure sensors I want, GPS input, paddle shifter input/output, 8-channel EGT/backpressure, and things that even the high-end aftermarket ECMs can't do, all while sending data back to my megasquirt to be logged alongside everything it is already logging.


Arduino is quite a bit more capable than plugging in your spare walmart tablet so you can have some gauges.

gametech

iTrader: (1)

My 3d printers and CNC router use arduino controllers, so I am familiar with some of the capabilities. That being said, the OP was only speaking of reading OBD, not taking anything like full advantage of the control possibilities. If you are truly going to use the arduino's capabilities, this is an entirely different conversation.

JoeNova

Reading OBD isn't that difficult with an arduino. There are sketches out there that you can download to do it with minimum programming required.

If he just wants digital gauges, then yeah, tablet is better. If you want to do anything with that data, arduino all of the way.

TrendSetter

Joe, do you have any more info on the screen you mentioned? is it open source or a commercial product or did you make it yourself?

JoeNova

Something I made.

super-ss

Hi Gents,

Sorry for this delay I am back now with new things I will share it soon here and I will be happy to help anyone.

NSFW

Are you guys using generic OBD2 to read the pids, or GM-specific extensions to OBD2?
And, how many parameters can you read per second?