GM328 Transistor Tester Case (9V battery or double 18650 batteries)
Description
This case is based to the GM328 "SMD" black board dimension bought on famous chinese site. It is not suitable with the board with standard components, The idea was to print a full case and have the opportunity to use a 9V battery or double 18650 battery to power on the board. I created top and bottom case with 4 fixing points, you can use 4 M3x30 mm screws to close the parts, in addition you will note two covers for the batteries. The LCD mask is used only to recover some error/clearance of LCD center. For fixing hole i used ruthex insert M3. For the electrical point of view, you have to buy 2 springs for the inner holes used for batteries 18650 and a cheap board TP4056 for charging. You can use a wires welded on Nichel strips for 18650 batteries. Jonweb
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