Case for GM328A tester

thingiverse

This is the case for GM328A universal tester module. The module is powered by a standard 9V battery or via an external 5.5 mm connector on its side. It has three pairs of external connectors for frequency measure, square wave, and PWM output, as well as for voltage measurement. There's also an additional rocker switch and a green LED for power status indication on the same side as the power connector. The original SMD LED was unsoldered from the board and replaced by a 5 mm green THT LED extended with 10 cm long wires. The case can be hung on a wall through two holes in the back or sit on a wall holder, as seen in the pictures. The wall holder and display frame are additional parts, but the case will work fine without them. WARNING: The dimensions of GM328A module may vary! I had to re-drill two holes on my particular board because they were drilled 1.5 mm from their original position, and the rotary encoder was shifted a little bit too. Always measure first, print later! All parts are printed from PLA. The display frame and rotary button have a 0.1 mm layer height, while the rest have a 0.2 mm layer height. Additional parts include: 1 pc GM328A universal tester module (longer version) - https://www.aliexpress.com/item/LCD-GM328A-Transistor-Tester-Diode-Capacitance-ESR-Voltage-Frequency-Meter-PWM-Square-Wave-Signal-Generator-SMT/32722907639.html 4 pcs M3x30 countersunk screws 4 pcs M3x12-30 countersunk screws (for wall holder) 1 pc Vigan MRS-101A-C4-B/B miniature rocker switch or similar with 19.2 x 13 mm size 1 pc 5 mm diameter green LED (BL-B2134-1 or any similar type) 3 pcs Vigan 24.102.2 2 mm diameter panel-mount sockets BLACK (or similar type for 6 mm holes) 1 pc Vigan 24.102.1 2 mm diameter panel-mount socket RED (or similar type for 6 mm holes) 1 pc Vigan 24.102.5 2 mm diameter panel-mount socket BLUE (or similar type for 6 mm holes) 1 pc Vigan 24.102.3 2 mm diameter panel-mount socket YELLOW (or similar type for 6 mm holes) 1 meter 0.25/2.5 mm diameter shielded audio cable for connections between board and external connectors Some black and red 0.35 mm wires for power and LED connections