Sunday, October 7, 2012

Target stand V1

This first target stand is clearly very basic. It's actually powered by a car door lock, which will pull the stand into position and then it's returned by a spring.

I went with a car door lock as the actuator because it is strong (10lb pull) and car door locks are common enough to be very cheap (~$15).

The problem is that in order to show the target, the actuator has to be pulling constantly. After about 1/2hr of turning the actuator on and off I noticed it was getting sluggish. On closer inspection that actuator is very hot. On measurement, the actuator was pulling 2 amps while it was on. This is not acceptable, far too much heat. After significant work, the machine is going to overheat. I need a different system.

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