Bus Pirate v3.8 free PCB build

Posted on Monday, July 21st, 2014 in builds by DP


@psmay tweeted picture of his free Bus Pirate v3.8 PCB build:

If you build a free PCB we’ll send you another one! Blog about it, post a picture on Flicker, whatever – we’ll send you a coupon code for the free PCB drawer.

Get your own handy Bus Pirate for $30, including world-wide shipping. Also available from our friendly distributors.

This entry was posted on Monday, July 21st, 2014 at 5:00 pm and is filed under builds. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

2 Responses to “Bus Pirate v3.8 free PCB build”

  1. Peter S. May says:

    Note that it isn’t quite finished, but it’s at least close.

    I don’t have any solder paste on hand, so I used a conventional soldering iron to tin all of the pads on the board, then tacked all of the parts into place with a generous blob of flux paste. After a bit of 375°F on the electric skillet and a little nudging, about three-fourths of the board was correct, but a few of the smaller parts floated away and had to be replaced and soldered by hand (very tricky with those 0603s and my wobbly hands). After some cleanup with an iron, a wick, and the hot air rework tool borrowed at Club Cyberia, all of the components were in place, but the thing didn’t work.

    I didn’t realize until I got home that the FT232RL was placed in reverse (as shown in the picture), and there’s a good chance that this was the only problem, though I’m sure the USB connector being full of flux isn’t helping.

    I plan to finish it off next time I’m there, which is hopefully next weekend.

  2. Peter S. May says:

    Finished the board today. Ruined two FT232RLs in the process—my SSOP soldering technique is rather clumsy—but finally I was able to program the bootloader with my PICkit 2, add the firmware with pirate-loader_lnx, and run the self-test, which passed after I made the requisite connections (had to watch out for the 3.8 pinout not matching previous versions; I scrambled the colors of the jumper wires to match the 3.6 card). Sweet.

Leave a Reply

Notify me of followup comments via e-mail. You can also subscribe without commenting.

Recent Comments

  • Pekka Akselin: This is ridiculous!? :-) We are back at 256(!) byte EPROMs that needed multiple, a handful, of voltages to run! :-(
  • KH: Let's try a back-of-envelope calc balancing energies. From MCP1700 datasheet, there are graphs for a 200mA load step. Estimate the energy shortfall as 12uJ. Say...
  • Daniel: It's been a week and my comment is still awaiting moderation. Apparently the CIA doesn't want their involvement known?
  • KH: Agree, so okay, I guess he must have learned from somewhere. 100nF and 1000uF is so far apart, that was jarring; it's more magic incantation...
  • Max: I have a suspicion the hefty electrolytic cap might be some sort of cargo cult carry-over from other RF-based projects - for instance, I've seen...