DIY Component tester

wayneh

Joined Sep 9, 2010
16,759
Interesting. Do you get a schematic with it? I'm curious how it does the ESR test. Does it specify how the test is performed - in particular the frequency at which it defines ESR?
 

wayneh

Joined Sep 9, 2010
16,759
So I guess TP1,2 and 3 are the 3 test points. And it's impossible to tell what the computer is doing without the programming.
 

studiot

Joined Nov 9, 2007
4,998
There are a number of these modules now available cheaply from China.

I am currently awaiting a tester of 74XX and 4XXX chips.
 

adam555

Joined Aug 17, 2013
858
Thanks for posting it. I was looking for a cheap inductance meter, and even though the range is not as low as I'd like, the price of €10 surely is -paid €6 for the same display alone last year at my local electronics shop-.
 

Thread Starter

debe

Joined Sep 21, 2010
1,223
If you scroll down on the site in the link, there is an instruction PDF you click on to. This gives assembly instructions & a circuit diagram.
 

SgtWookie

Joined Jul 17, 2007
22,221
Here: http://translate.google.com/transla...ocontroller.net/articles/AVR-Transistortester is a link to the original project, which was written in German, and the link translates it to English.

I actually bought one similar to this, but using SMT components and preassembled, elsewhere for around $20 USD. For the energy, time and cost it would take to build a piece of equipment with this much functionality from scratch, anything under $20 is a steal. So what if it's not accurate down to 5%; it's not really a precision instrument. It IS a very handy and very compact tester for a surprising variety of discrete components.

studiot,
I recently picked up a MiniPro TL866CS; it not only programs a surprising array of microcontrollers/EEPROMs, it also can test a variety of 4000 and 74HCxx logic ICs - not as extensive in the logic ICs as I'd like, but they may provide for more of them in the future.
 

takao21203

Joined Apr 28, 2012
3,695
I bought one maybe 6 months ago- not working. Saw it again today.
Then I bought another with 128x64 LCD, very useful for transistors and small capacitors and so on.

Highly recommended. Of course they dont include the firmware. Most are Atmel based.
 
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