Windscreen wiper motor
July 29, 2009
Got my hands on 4 new windscreen wiper motors for 40 euro in total. Which should get me started with building something nice. The seller told me it is one for a VW Golf which I checked on other sites and they look the same.
Of course I opened it up and it has a couple of metal connections (see picture 'inside') on the gear wheel which connect to wires going to the outside (to make the wipers go left and right I presume. That would make a nice rudimentary odometer don't you think?
My PROBLEM (if it is...) NO SPECS
A) is there a method of measuring the currents necessary to determine the design of the power driver? And how much power would I get out of these things?
I did a rough test. just letting it run at 12V with no load and it drew about 1.5A. but the startup current must be much higher. The same for stall. How do you guys approach something like this?
B) alternatively I could buy something like http://www.pololu.com/catalog/product/755 and see where it ends up.