Go Back   EcoModder Forum > EcoModding > Instrumentation > OpenGauge / MPGuino FE computer
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 03-31-2016, 05:48 PM   #431 (permalink)
The brake pedal is evil
 
Join Date: Jan 2013
Location: California__ Awsome: Yes
Posts: 390

Denny's Detector - '08 Mercury Grand Marquis

Taserface - '17 Chevy Volt
Thanks: 5
Thanked 55 Times in 51 Posts
The trick is to flash an empty sketch to the TinkerKit LCD. The timing is a bit tricky but it works well enough. When I have time I'll see if I can make cheap units using an ebay arduino nano, a cheap eBay LCD, and a postage stamp of PCB for the BJT, zeners, and resistors. It looks like the minimum BOM is $8 without case.

__________________
Getting sensor data off of a pre OBDII Toyota ECU via TDCL.
All of this is on E10: Project E is my current focus.


Last edited by H-Man; 03-31-2016 at 06:00 PM..
  Reply With Quote
The Following User Says Thank You to H-Man For This Useful Post:
t vago (04-18-2016)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 04-14-2016, 07:00 PM   #432 (permalink)
The brake pedal is evil
 
Join Date: Jan 2013
Location: California__ Awsome: Yes
Posts: 390

Denny's Detector - '08 Mercury Grand Marquis

Taserface - '17 Chevy Volt
Thanks: 5
Thanked 55 Times in 51 Posts
Is there any reason I wouldn't be able to add some code to do an analog read of my dashboard lamp rheostat voltage and have the micro controller adjust PWM based on dashboard brightness?
__________________
Getting sensor data off of a pre OBDII Toyota ECU via TDCL.
All of this is on E10: Project E is my current focus.

  Reply With Quote
Old 04-18-2016, 12:16 PM   #433 (permalink)
MPGuino Supporter
 
t vago's Avatar
 
Join Date: Oct 2010
Location: Hungary
Posts: 1,807

iNXS - '10 Opel Zafira 111 Anniversary

Suzi - '02 Suzuki Swift GL
Thanks: 828
Thanked 708 Times in 456 Posts
Quote:
Originally Posted by H-Man View Post
Is there any reason I wouldn't be able to add some code to do an analog read of my dashboard lamp rheostat voltage and have the micro controller adjust PWM based on dashboard brightness?
Hardware-wise, you'd have to add a voltage divider to condition your instrument panel lighting signal to be less than 5VDC, then feed it to one of the analog input pins. You'd want to also add a 5 VDC Zener diode to the pin for circuit protection. The circuit would look similar to this:



The resistor values would have to be adjusted, but that should be easy enough to do.

Software/Arduino-wise, this capability could easily enough be added in. My code already has analog input reading capability built into it - not sure if the original DCB 0.86 (or earlier) code would allow/accept Analog library calls. I'd just have to provision in a way of assigning an unused analog pin for use with brightness.

I got the analog gauge driver code added in, but haven't been able to find any time to test it.
  Reply With Quote
Old 01-05-2017, 06:19 PM   #434 (permalink)
MPGuino Supporter
 
t vago's Avatar
 
Join Date: Oct 2010
Location: Hungary
Posts: 1,807

iNXS - '10 Opel Zafira 111 Anniversary

Suzi - '02 Suzuki Swift GL
Thanks: 828
Thanked 708 Times in 456 Posts
Well, then... I guess I can no longer edit the first post of this thread!

Time to start another workspace thread!
  Reply With Quote
Old 06-16-2017, 11:42 AM   #435 (permalink)
kep
EcoModding Lurker
 
Join Date: Jun 2017
Location: rus
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Thanks for your work done, but it does not work with nozzles, peak and hold, I found a sketch. It works, could you add this algorithm to your code?
As well as add voltmert
Excuse me writing serz translator
Attached Files
File Type: zip mpguino code meelis11.zip (21.1 KB, 54 views)
  Reply With Quote
Old 02-19-2018, 08:30 PM   #436 (permalink)
EcoModding Lurker
 
Join Date: Feb 2018
Location: Argentina
Posts: 13
Thanks: 1
Thanked 1 Time in 1 Post
Hi t vago :

Interesting Project ...Have a shcematic for Arduino Mega ?

Regards !
Pablo.
  Reply With Quote
Old 02-20-2018, 12:30 AM   #437 (permalink)
MPGuino Supporter
 
t vago's Avatar
 
Join Date: Oct 2010
Location: Hungary
Posts: 1,807

iNXS - '10 Opel Zafira 111 Anniversary

Suzi - '02 Suzuki Swift GL
Thanks: 828
Thanked 708 Times in 456 Posts
There should be some description in the source code on what pins to connect for an Arduino Mega2560.

I have also started using GitHub -> https://github.com/tvago1972/MPGuino
  Reply With Quote
Old 02-20-2018, 06:18 AM   #438 (permalink)
EcoModding Lurker
 
Join Date: Feb 2018
Location: Argentina
Posts: 13
Thanks: 1
Thanked 1 Time in 1 Post
Thank you very match ! :-)
Quote:
Originally Posted by t vago View Post
There should be some description in the source code on what pins to connect for an Arduino Mega2560.

I have also started using GitHub -> https://github.com/tvago1972/MPGuino
  Reply With Quote
Old 01-17-2020, 09:34 AM   #439 (permalink)
EcoModding Lurker
 
Join Date: Nov 2019
Location: Czech Republic
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Hi, I created my MPGuino, downloaded the software (different versions) and slightly modified, all right. I want to use it with a marine engine. I also want to use a 20x4 LCD. But I can't edit the code. I see random characters all over the screen. How difficult would it be to edit the code for a 20x4 LCD (HD44780), can you please advise me? I'm getting started with programming. Sorry about my English. Thank you very much. Vítek
  Reply With Quote
Old 03-15-2023, 02:39 PM   #440 (permalink)
EcoModding Beginner
 
Join Date: Oct 2022
Location: Oklahoma
Posts: 28

WJ - '03 Jeep Grand Cherokee Laredo
Team E85
90 day: 17.28 mpg (US)

ZJ - '94 Jeep Grand Cherokee Laredo
Thanks: 17
Thanked 10 Times in 9 Posts
Alright, I'm a bit lost. I built an mpguino using the legacy schematic with a Nano. I don't have the LCD yet, it comes tomorrow, but it appears to be working. Only thing is I tried to enable serial debugging so I could see some output on the arduino IDE serial monitor, but it never outputs anything. Is there a #define that I''m missing?

  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com