Ever wonder what would happen if you applied say, 4.1V, to a USBizi-100? Let me save you the trouble…sad thing is we burnt up two boards before we realized the problem
Wow! That is one fancy gadgeteer module!
Ouch, that got tu hurt Is that a educational board or a commercial product ?
I see Missouri S&T… That must be a digital cow counter.
It is a custom board we did here last year for a research project. It was made to fit in a nice plastic case with the FEZ Touch screen on the other side.
@ Mike - careful!
Marlboro man doesn’t mess around! ;D ;D
So Missouri is associated with cows and cowboys ?
nah, that would be University of Missouri - Columbia. They have all the ag related studies and such. At S&T we are just a bunch of engineers (i.e. geeks.)
I think I see the source of the problem. You put the bizi on there crooked!
Wow! Did it actually desolder itself from the board?
No I desoldered the IC as I wanted to see how badly the board was damaged. A colleague has one of those fancy Pace 1700 SMD rework machines. The machine has a heating/vacuum had that is lowered down over the part and heats the part according to the profile set then holds onto the part with a vacuum nozzle and lifts the part from the board. Typically it works great, in this case a couple of the traces actually welded to the IC pins so the vacuum was not able to pull the part up. I had to pop the IC loose with a small wooden stick.
We now have this board put up on the shelf as a reminder to do our power circuitry right the first time.
I can also claim ownership for frying both boards, the first one went off out of nowhere, the next one went off right as I had the board connected to external power and USB. I saw a faint bit of smoke coming from the enclosure, and upon pulling the cover off, we were greeted with a decent sized mushroom cloud. It even singed part of the battery and left a big stain on the inside of the enclosure.