Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: ptumik on March 19, 2009, 01:25:58 AM

Title: problem with 5v regulator
Post by: ptumik on March 19, 2009, 01:25:58 AM

Hi,
it looks like my 5v regulator from $50 robots doesn't work.
I have connected my battery to it, and I have uncontrolled voltage to my servos (which is fine) and zero volt to my circuit.
How can I check if it's working correctly?

Thanks

Title: Re: problem with 5v regulator
Post by: SmAsH on March 19, 2009, 04:39:12 AM

do you have it connected the right way around? and are you using a common gnd?

Title: Re: problem with 5v regulator
Post by: Private Reid on March 19, 2009, 05:42:52 AM

I had the same problem

Check your connections to the regulator, if it's getting unusually hot you've got it wrong.

Title: Re: problem with 5v regulator
Post by: dellagd on March 19, 2009, 06:15:18 AM

make sure you're plugging in the battetries the right way

Title: Re: problem with 5v regulator
Post by: ptumik on March 19, 2009, 01:08:13 PM

I'm pretty much sure that I have connected it the right way, but will double check today.
Also, I'm using common ground.
Regulator isn't hot at all.
And I have connected the battery correctly, I double checked that.

Will give it a try tonight, and if unsuccessful will post a photo.

Thanks for helping!

Title: Re: problem with 5v regulator
Post by: pomprocker on March 19, 2009, 05:04:42 PM

use a multimeter on the legs of the regulator

Title: Re: problem with 5v regulator
Post by: offy on March 19, 2009, 06:11:07 PM

I had a problem of the regulator getting very hot. I checked all my connections, I mean ALL of them, every wire, capacitor and everything and I finally got it working, but never used it, didn't have all the features I wanted.

Title: Re: problem with 5v regulator
Post by: dellagd on March 19, 2009, 06:11:28 PM

also, if the problem persists, do some continuity tests to make sure all of the soldering is good.

Title: Re: problem with 5v regulator
Post by: dellagd on March 19, 2009, 06:16:10 PM

to offy:
how did you fix the problem?

Title: Re: problem with 5v regulator
Post by: ptumik on March 19, 2009, 09:01:51 PM

false alarm.  :-[
double checked right now - all is working fine.
except that my diode stopped working. :) but that is easier to fix.