Products > Test Equipment

Show us your $20 Transistor Tester enclosures and mods (note: lots of pics)

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vivaT:
Here's a tweezer version of the transistor tester made for R/C and diodes. I modified a dc-dc charge board with protection for the battery and needed to change the firmware to BGR from RGB to get the tiny TFT ST7735 128x64 0.9" lcd to work with correct colours. Its pretty accurate using LT1004 and cherry picked 470k, 680 ohm resistors. The rotary switch works very well after i modified the values: Phases 2, Steps 15. It has outputs on the pcb for all three test points plus IR/ PWM and frequency counter for when i get round to adding those options. I kept the programming interface for the regular updates provided by madries on his M firmware. The 7-way LCD ribbon cable was made from silicone sleeve and coloured 0.1mm enameled wire. charging and serial comms are done via mini usb.

bitseeker:
Wow, that is really cool! Nicely done.

jdev99:
I remixed this case from egil   https://www.thingiverse.com/thing:1580922  , to use with the Hiland M644 and a dual 18650 battery holder.
There is also a small switch on the back to switch the battery off.

https://www.thingiverse.com/thing:4584702

Bud:

--- Quote from: Messtechniker on September 22, 2018, 09:06:39 am ---Attached some pics of the wooden box for my "Transistor Tester" rather "Component Tester". Items on both sides were used to flash the 328 since the firmware is updated so frequently. Lately I have been using the TL 866 instead.

--- End quote ---

This is the first time ever that i see the display mounted Inside the box and boards mounted Outside  :D

bitseeker:

--- Quote from: jdev99 on August 31, 2020, 05:10:43 pm ---I remixed this case from egil   https://www.thingiverse.com/thing:1580922  , to use with the Hiland M644 and a dual 18650 battery holder.
There is also a small switch on the back to switch the battery off.

https://www.thingiverse.com/thing:4584702

--- End quote ---

Very nice. What kind of filament did you use?

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