WORKSHOP VIDEO #29: Favorite Bus Pirate features

Today’s video is about our favorite Bus Pirate features.

Voltage measurements with the Bus Pirate ADC pin are easier than working with a separate multimeter on an analog project. We read a voltage from an MCP4725 I2C digital to analog converter in the demo using the d and D (continuous) voltage measurement commands.

The up/down scrolling history recalls previously entered commands so you don’t have to type them again. Learn more about the general Bus Pirate interface in Bus Pirate 101 and Bus Pirate 102.

I2C and 1-Wire address scanners find chip addressed by brute force, so you don’t have to reach for the datasheet.

The first smoke test of a new build usually turns up a solder bridge or two that shorts the power supply. Our smoke tests are done with the Bus Pirate on-board 3.3volt and 5.0volt power supplies. The regulator has current projection, and the Bus Pirate monitors for a short circuit. If the voltage is too low the Bus Pirate disables the supplies and shows a warning. The tiny amount of time the board was powered will hopefully reducing the damage done by short circuits.

Sorry about the poor quality of the screen captures. We’re still working to find a workable combination of tools, formats, and transcoding that ends up usable on youtube.

Get an assembled Bus Pirate for $30, including world-wide shipping. Also available from our friendly distributors.

Check out our previous videos.

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    1. It has the short circuit plyfuze, not as good as BP smoke test, but it should save quite a few projcets from going poof as well.

  1. The power monitoring feature is awesome! In the past I’ve often connected circuits that I wanted to debug backwards. At least now, the BP prevents them going poof. Btw, you seemed super excited in the video…secret project going well? :-)


  2. Ian, I have to agree with Rohit, you seem to be bubbling with happiness. May be it is time to reveal the secret of the secret project.

    Nice video on Bus Pirate feature demonstration. I learned a lot. Keep up the good work.

    1. What can I say, I really love using the Bus Pirate :)

      I outlined this demo before shooting it and it was a lot easier to get through. There was also less material (only 20 minutes!) so editing was easier.

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