Another M328 Transistor Tester Case
Description
Another M328 Transistor Tester Case I don't want to use the original terminals, therefore I've added BNC connectors for frequency in- and output and laboratory connectors for all other measurement inputs. Both case parts (hopefully) keep together by using M3 screws and M3 brass thread inserts. Few things founds: 1) BNC connector FrqIn is to far left and the mounting nut cannot be placed because of the cylinder holding the brass insert. Fixed via hot iron ;-) 2) Same for GND and + measurement connectors at the bottom. Same fix ... 3) Hole for button needs to be moved ~ 1mm. Same fix as well.... All (hopefully) fixed, please check updated STL files. Additional hardware: 6 x brass insert M3 x 8 mm 6 x screw M3 x 10 mm 5 x Hirschmann 4mm female connectors (black, red, yellow, green and blue), for example: https://www.reichelt.de/index.html?ACTION=446&LA=0&q=bug%2010%20gn 2 x BNC connector UG 1094U, for example: https://www.reichelt.de/bnc-einbaubuchse-zentralbefestigung-loetver-ug-1094u-p22014.html?&trstct=pos_0 1 x 9V battery clip, for example: https://www.reichelt.de/batterieclip-fuer-9-volt-block-vertikal-high-quality-clip-hq9v-p57131.html?&trstct=pos_0 same wires - I'm not sure, if it's OK to use the not shielded cable for FrqOut - I'll see. I guess no wiring plan is needed and the picture is enough ... My friend Arne again mentioned a part at his youtube channel: https://www.youtube.com/watch?v=uRsw34WPN0w If you are interested in "Nerdy" things like reanimated soundcards, old PCs, etc., you should have a look at his channel "root42" (https://www.youtube.com/channel/UCPjFa_UZBUDzdJTIEdyGjIQ). It seems that he doesn't like the bottom part of the case - maybe I create another one, which is more smooth ... 2019-07-13: Two "rounded" versions of the bottom added: 1) TransistorTesterBtnRnd.stl --> round edges only 2) TransistorTesterBtnRndSmallSep.stl --> I cut the seperator for the battery area to print with the "open" side down
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