Asked — Edited

Over Heating

DJ, I have managed to hook up alot of servos and I find that the voltage regulator overheats and the servos will no longer hold their respective positions. If I shut them down for a few minutes then everythig is fine again. I plan on making a large heat sink but I am wondering if that will be enough. Would a fan be a good idea? Has anyone done this and what kind of area should I go for on the heat sink? Any advise would be appreciated.


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#9  

Having the same problem going to try stealing a fan from an old pc and wire it directly to the battery. Im using LiPO 4S 4200mah

Will that work? I think most fans run on 5v power and this is 14.7, do I need to drop the voltage?

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#10  

Actually funny enough most PC fans run at 12V so supplying them with 14V should be no prob or you could use a 5V fan and run it off of the 5V regulated voltage, the LM1084 is pretty beefy so it can handle it.

#12  

I put one of those 5v fans on the back of my EZ-B and have no heating issues at all. Here is how DJ mounted the fan to the board.

#13  

User-inserted image

I picked up a VGA aluminum heatsink and 40mm fan pushing around 5 cu ft min , thermal compound is between the original heatsink and new one. I wanted this cooling solution to be completely reversable. On a EASIER idea however radioshack has excellent heatsink kits that are 2:50 each and predrilled to fit our regulars.