This week is dedicated to Bus Pirate development. Today we hacked the Bus Pirate to do crude capacitor measurement. You could use any microcontroller to do this, but one nice thing about the PIC24FJ is that it has a 32bit timer to measure large value capacitors. In the video:
- How to measure capacitors with the Bus Pirate (or any uC)
- Parts unboxing and discussion
Here’s some links mentioned in the video:
Don’t miss:
- Bus Pirate week, day 3 – cases and enclosures
- Bus Pirate week, day 2 – accessories and cables
- Bus Pirate week, day 1 – firmware development
Grab the latest v6 firmware release candidate here.
Legend!M
It would be great make Inductance measurements, from a Microchip application note I read that it could be done using the CTMU, could be a great project.
Owww goodies!!! Xmas is early this year :)
I got some goodies for you too in my reel package :)
OOOWWWWW!! :)
Hehehe, one of the guys who loves getting components as Xmas gifts. :D
http://www.eeweb.com/rtz/secret-santa
You beat me to it! I was going to do a bus pirate C tester this week-end!
There’s lots of room for improvements!
Little suggestion, you can put a fixed capacitor on the board, so you can make always a calibration, this way you can compensate errors on timers or voltage references, and you don’t need to put any constant inside the code.
the fixed capacitor goes in parallel to the one you want to measure
where did day 4 go? :(
Demo FAIL ;) I posted the Make Tokyo Meeting presentation instead.
Hi Jan
Looks like you already have gotten your xmas presents.
What could be better than a big box full of electronic components and some pcbs,…
Aweseome
Cheers
Rubi