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

Reply  Post New Thread
Submit Tools LinkBack Thread Tools
Old 08-26-2009, 03:10 PM   #1 (permalink)
Tony B
Join Date: Jun 2009
Location: uk
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
MPGuino problems...please help!

An interesting thing happened; the MPGuino (pre-assembled) completely froze and the only activity on the screen was a flashing cursor block in the top left corner. No response to pulses or switches. Presumably, the code has a little bug somewhere. FYI: The unit was in Instant/Current mode and I wasn't fiddling with it. I was travelling very slowly (0-1mph) and then floored it....MPG registered at 3.15 when the unit froze. The speed was slow and there was a lot of fuel flowing, so I guess that something's dividing by 0 and creating the error. Cycling the power fixed the problem. It has subsequently frozen once more.

Of more concern, the backlight didn't turn off (although set for 7 minutes timeout) the other day. I'd been away for a couple of weeks, so I returned to a flat battery. I've since charged the battery and measured the following:
Brightness 0: 23mA, 1: 48mA, 2: 77mA, 3: 111mA...Then the backlight decided to take a break for a few days, but has started working again.

I want to make some changes to the code, but there's no USB on the pre-assembled board. Do you think I could place the chip into an Arduino Duemilanove board and use that to program it. I'd love to replace the chip with the larger Atmega 328. Is this possible, or would there be issues (such as timers)?

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

Old 09-13-2009, 01:46 AM   #2 (permalink)
Master EcoModder
orange4boy's Avatar
Join Date: Aug 2008
Location: The Wet Coast, Kanuckistan.
Posts: 1,275

The Golden Egg - '93 Toyota Previa DX
90 day: 31.91 mpg (US)

Chewie - '03 Toyota Prius
90 day: 57 mpg (US)

The Spaceship - '00 Honda Insight
Thanks: 100
Thanked 306 Times in 178 Posts
I'm having similar issues but not with the backlight. I'm not an electronics guy so I'm waiting for help like you. I might also like to upgrade because my chip is a little too small for the pre .80 program and I want the newer code.

Hope we can figure this out.

Vortex generators are old tech. My new and improved vortex alternators are unstoppable.

"Itís easy to explain how rockets work but explaining the aerodynamics of a wing takes a rocket scientist.

  Reply With Quote
Reply  Post New Thread

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
MPGuino release one workspace dcb OpenGauge / MPGuino FE computer 1061 01-17-2020 01:37 AM
Ethanol problems ? Denis DIY / How-to 16 05-31-2011 05:14 PM
MPGuino rebooting and freezing also... Power issue? tygertec OpenGauge / MPGuino FE computer 28 04-17-2011 04:05 PM
Super MPGuino? gtkid2002 OpenGauge / MPGuino FE computer 97 02-06-2011 12:39 PM
MPGuino installation/setup: 1998 Geo Metro (Pontiac Firefly) MetroMPG OpenGauge / MPGuino FE computer 12 10-11-2009 03:29 PM

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