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Search took 0.03 seconds. Search: Posts Made By: bobski
Forum: OpenGauge / MPGuino FE computer 06-13-2015, 10:18 AM
Replies: 72
Views: 18,776
Posted By bobski
No, ledDisplayNumerical() is a subroutine. You...

No, ledDisplayNumerical() is a subroutine. You use it as a command in your main program (loop) as you would digitalRead(), analogWrite() and so forth.
When you execute a subroutine, the program...
Forum: OpenGauge / MPGuino FE computer 06-08-2015, 01:04 PM
Replies: 72
Views: 18,776
Posted By bobski
It's in void setup(): ...

It's in void setup():
attachInterrupt(1,basicVssInterrupt,RISING);
Unfortunately it's hardware limited to certain pins.
Arduino - AttachInterrupt...
Forum: OpenGauge / MPGuino FE computer 03-30-2015, 01:56 AM
Replies: 72
Views: 18,776
Posted By bobski
Umm... no? It's functional, but very light on...

Umm... no? It's functional, but very light on features.

You mean like double-height characters? No, I haven't played with that. As I understand it, it's a matter of sending custom characters to...
Forum: OpenGauge / MPGuino FE computer 03-30-2015, 12:02 AM
Replies: 72
Views: 18,776
Posted By bobski
Page 3: link...

Page 3: link (http://ecomodder.com/forum/showthread.php/mpguino-shield-fork-v2-16364-3.html#post227420).
Don't bother with the I2C stuff (attached to analog 4 and 5), it's not used for anything...
Forum: OpenGauge / MPGuino FE computer 03-29-2015, 11:38 PM
Replies: 72
Views: 18,776
Posted By bobski
Nope. This was my re-hash of the MPGuino. ...

Nope. This was my re-hash of the MPGuino.

Could be. I haven't looked at it in quite a while, but one of my complaints about MPGuino was that it's not compatible with the Arduino IDE. IIRC, the...
Forum: Instrumentation 06-11-2011, 11:50 PM
Replies: 5
Views: 1,728
Posted By bobski
Yeah, I ran into that when I tried direct-driving...

Yeah, I ran into that when I tried direct-driving an optoisolator with the VSS signal. The VSS really doesn't put out much current, so it's easy to drag down the signal so the ECU, speedo and cruise...
Forum: OpenGauge / MPGuino FE computer 06-03-2011, 04:39 PM
Replies: 72
Views: 18,776
Posted By bobski
I had been busy with school, so not much...

I had been busy with school, so not much progress, but here's the current state of things:
http://www.youtube.com/watch?v=6JS2qwB39S8
Forum: Instrumentation 05-18-2011, 04:16 PM
Replies: 11
Views: 3,051
Posted By bobski
Diodes are electrical components that only let...

Diodes are electrical components that only let electrical current flow in one direction, the way a check valve does for gasses and liquids.

1N4001 rectifier diodes are easy to find (try radio...
Forum: OpenGauge / MPGuino FE computer 04-12-2011, 12:24 PM
Replies: 43
Views: 13,533
Posted By bobski
339, or 393? Though it's a pretty basic...

339, or 393? Though it's a pretty basic comparator circuit that should work with many op-amps, your diagram says 393.
10uF might be overkill for the decoupling cap on your input. Also, electrolytic...
Forum: OpenGauge / MPGuino FE computer 03-28-2011, 07:38 PM
Replies: 43
Views: 13,533
Posted By bobski
Well for starters, the signal is supposed to be a...

Well for starters, the signal is supposed to be a square wave rather than a sine. ABS sensors tend to be simple coil-and-magnet setups that read a notched ring that spins with the axle. The VSSs that...
Forum: OpenGauge / MPGuino FE computer 03-08-2011, 02:10 PM
Replies: 72
Views: 18,776
Posted By bobski
MPGuino shield: Fork? V2?

Hey folks.

I've been following the development of the MPGuino for a while now. It's a great little device, but I've had some complaints about the hardware and software design (what can I say? I'm...
Forum: OpenGauge / MPGuino FE computer 01-07-2011, 06:01 PM
Replies: 23
Views: 7,722
Posted By bobski
An alt with a bad voltage regulator can hit 20V+....

An alt with a bad voltage regulator can hit 20V+. That doesn't happen often, but it would suck to add your 'duino to the repair bill. I would go for divide-by-5 at least. That should give you a 0-25V...
Forum: OpenGauge / MPGuino FE computer 06-21-2010, 09:46 PM
Replies: 89
Views: 46,483
Posted By bobski
For those of you building your own LED displays,...

For those of you building your own LED displays, take a look at the SAA1064 display driver chip. It's capable of driving up to 32 discreet LEDs or two sets of 16 LEDs in common-anode display modules...
Forum: OpenGauge / MPGuino FE computer 02-23-2010, 01:23 PM
Replies: 97
Views: 24,812
Posted By bobski
Okay... The big difference I notice between the...

Okay... The big difference I notice between the standard boards and the mega is the pin numbering when using the analog pins as standard digital I/O. The scheme is the same but the numbering is...
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