DIY Arduino Capacitor Tester

DIY Arduino Capacitor Tester
In this video we make an Arduino capacitor tester.We use two digital pins, one for charging and one for discharging the capacitor. One analog pin as our voltmeter input, and a little add on circuit with a couple of resistors.
This works on the principle of TC=R*C. We know R (in this case 100kOhms) and we measure TC until the cap reaches 63%. When that happens we can calculate C.
Link to video show how to set up LCD:
• arduino powered freque...
Link to all my sketches on Dropbox:
www.dropbox.com/sh/m6c40pu99f...
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Please watch: "VC60B Insulation Tester"
• VC60B Insulation Tester
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[@philipsmith4037]

Nice walkthrough, it’s very helpful for beginners to have a walk through of the code like this.

[@mamoynas]

wouldn't it be better to start with a DISCHARGE cycle first? A partially charged cap would reach the 62% point faster thus giving wrong results. Maybe this is what happened with the "faulty" 100uF that measured as 50uf... Nice project.

[@learnelectronics]

+mamoynas Yes it would.

[@stlucifer66666]

Hi, How would I edit your code and only use serial no lcd?

[@hobbytime8041]

Would it detect if you connect the capacitor with the wrong polarity?

[@learnelectronics]

+HobbyTime No it's a dumb detector.

[@hobbytime8041]

learnelectronics thanks a lot for aswering
It is great any way. I am wondering how to test polarity. Thanks!!

[@rsmith155]

Blam!

[@sundhareshanvs6205]

Where I can download code..?