Society of Robots - Robot Forum
Electronics => Electronics => Topic started by: richiereynolds on March 15, 2010, 05:09:05 AM
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Anyone bought this product?
http://www.active-robots.com/products/sensors/pololu-carrier-10cm.shtml (http://www.active-robots.com/products/sensors/pololu-carrier-10cm.shtml)
They're about £5 each. I bought 2 a couple weeks ago, then one just stopped working so I bought another, then the second one I'd bought stopped working! I didn't think I'd been rough or fried them but I guessed it was probably my fault somehow.
In any case I wanted 4 for a new robot so bought 4 more. Then the other night the 3rd one I bought just stopped working too.
Haven't really used the 4 new ones yet but as the first 3 have just died I thought I'd ask has anyone else had any difficulties with these before I get onto the supplier.
Thanks, Richard.
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I am using two of the 5cm versions. So far they have been working.
I did find that they do draw lots of current when switching so put a 47uF cap right on the power pins.
Are you powering them from a regulated supply? Or are there motors connected to the same power as the Sharpe uses? I could see that spikes, from motors, could kill these.
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Hi there, yes they're on a regulated 5V supply with no motors, plus they've got 22uf ceramic caps across power and ground right on the carrier boards.
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Hi richie
I'm in the UK as well and buy stuff from active robots.
I suggest you also post questions to their support department and see what they say.
Since its a kinda blog then you may get responses from others as well.
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Cheers for the info, I'll do that.