I am trying a project that will use motors to drive the movements of an animatronic instead of my normal pneumatics that I have been using for the last 17 years. But I wanted to build up some test joints to prove out the joints and motors before I finalized a design. To do this I decided I needed a small device to drive stepper motors for the test arms. So was born the Stepper Motor Test controller. Lets get building.
|Circuit board fresh from the manufacturing. Time to start adding parts starting with the shortest and working to the tallest ones.||As this is just a one off build, it was not worth having solder paste stencils made. so for this one i am just putting small dabs of solder paste on the smd pads. once the parts are placed I can use a fine tiped soldering iron or my hot air reflow gun to melt the solder and affix the parts|
|Using tweezers and a magnifying lamp I have places all the smd parts. time to heat things up||post heating. note the solder paste is all melted and flux is around most of the parts. now is a good time to do a little cleaning, as once the taller parts are in place it will be much harder to clean up the extra flux from the paste.|
|With the smd soldered I moved to the thru hole parts going headers then terminal blocks with the tall caps last.||Now I like to do some testing to make sure everything is all good. I start by applying power and checking voltages at various points. The that done it was time to inset the pre-made modules.|