Case for GM328A component tester

Case for GM328A component tester. which is yet another a variant based on the rather wonderful universal transistor and component tester developed by Markus Frejek, and later Karl-Heinz Kübbeler. A full description of the project is available here:

http://mikrocontroller.net/articles/AVR_Transistortester

This case fits the variant with graphical display and one test button sold by Banggood and probably elsewhere called GM328A. The case includes a compartment for the battery. The pinout for the 14 pin ZIF test socket is printed on the case, for reference. Note that there are very many different variants of this tester in the market.

You need four M3x16 (or thereabouts) countersunk screws for assembling the top and bottom sections. It works best if you thread first using an M3 tap.

The inner structure of the press button is critical to get the right height. You may have to clean it up a bit to get the right fit, or possible add thin shims. There is a parameter call 'k