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View Full Version : pic: On board voltmeter

couvillion
09-02-2013, 18:37
[cdm-description=photo]38553[/cdm-description]
androb4
09-02-2013, 18:37
Cool! Is it legal?
Kevin Sevcik
09-02-2013, 18:47
Not in that configuration. An inspector is never going to pass that 24 gauge wire being protected by a 40A breaker. Switch it over to on of the smaller terminals and plug in a 20A (but preferably 5A) circuit breaker, and THEN it will be legal. It's just a custom circuit, after all.
couvillion
09-02-2013, 19:23
It's purpose though is mainly debugging before you get to the field. When the robot doesn't work there is a tendency to stare at it while the kids wiggle the controls. Now a little bit of insight might be gain, while scratching at the beard.
AllenGregoryIV
09-02-2013, 19:28
I had a similar idea this summer.

I was planning to put one of these (https://www.adafruit.com/products/575) on our robot but I couldn't find a purple 7 segment LED to replace the green ones with. I might get one any way.
Kevin Sevcik
09-02-2013, 19:48
I had a similar idea this summer.

I was planning to put one of these (https://www.adafruit.com/products/575) on our robot but I couldn't find a purple 7 segment LED to replace the green ones with. I might get one any way.I'll just leave this here...
Three Digit Purple 0.56 Inch (14.20mm) LED Display Anode (http://www.lc-led.com/View/itemNumber/505)
0.56 Inch (14.20mm) Three Digit LED Display - Purple (Cathode) (http://www.lc-led.com/View/itemNumber/647)

You get to figure out if it's worth having 9 extra displays. And whether you need common cathode or common anode.
AllenGregoryIV
10-02-2013, 02:40
I'll just leave this here...
Three Digit Purple 0.56 Inch (14.20mm) LED Display Anode (http://www.lc-led.com/View/itemNumber/505)
0.56 Inch (14.20mm) Three Digit LED Display - Purple (Cathode) (http://www.lc-led.com/View/itemNumber/647)

You get to figure out if it's worth having 9 extra displays. And whether you need common cathode or common anode.

9 extra? Those are just the ones for our next 9 robots. Thanks Kevin.
Kevin Sevcik
10-02-2013, 10:19
9 extra? Those are just the ones for our next 9 robots. Thanks Kevin.I'm guessing you just looked on Mouser and Digikey and such, because I just Googled "purple seven segment".

For anyone else interested in customizing their voltmeter, LC LED (http://www.lc-led.com/Catalog/department/36/category/51/17) offers the 3 digit display red, green, orange, blue, yellow, purple, and white. Only trick is that you have to order a "sample" of 10 displays for $29.80. So if you're looking for a more common color, Mouser or Digikey is probably an easier solution.