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Posts Tagged ‘fix’

Simple fix for Bus Pirate power supply oscillations

Friday, March 7th, 2014

Jeff of Mightyohm wrote an article about power supply oscillations on the Bus Pirate: After removing my device under test, I quickly narrowed the problem down to noise on the Bus Pirate’s 3.3V rail. I initially suspected that this might be some kind of noise coming from the 5V USB supply,...

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Posted in Bus Pirate | 17 Comments »

Bus Pirate scratch and dent brought back to life

Monday, December 17th, 2012

Tom chose to redeem one of his coupons for a Bus Pirate v3 from the scratch and dent category of our free PCB drawer. On arrival it was faulty, but he was quick to diagnose a problem with the FT232RL USB-to-serial IC on board. After replacement the Bus Pirate came...

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Posted in Bus Pirate, Free PCBs | No Comments »

Fixing botched prototypes

Wednesday, April 4th, 2012

We go through a lot of prototypes, and many are not perfect the first time around. Here is a pic of one of our prototypes that had 2 pins cross-connected. The simplest solution was to cut the offending traces and reroute the signals with wire and tape.

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Posted in hacks | 28 Comments »

Recent Comments

  • Drone: So these go for around $330 USD and NO published calibration procedure online or otherwise? Given what's inside - I don't think I'll be considering...
  • 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...