One Pi is never enough
Haven't you guys heard of redundant systems in safety critical design? :-)
You should have multiple slices of Pi voting on actions.
The planned brain surgery on our Vulture 2 spaceplane's Pixhawk autopilot got off to a shaky start yesterday as the aircraft's onboard Raspberry Pi decided it didn't much fancy booting up. Autopilot wrangler Linus Penzlien touched down in Spain on Sunday ahead of an intensive week of graft during which he'll be working with …
Nononono - that's how UFOs work; multiple guidance systems will eventually tend to disagree on the course to take, and if you have many enough of them, there will always be one pulling in any given direction - you just end up hovering in one spot. If you want to move, you just disconnect the ones that vote against the direction you want to go in...
The usual thing that will cause a Pi to get upset in one location, but work fine on the bench (our favourite kind of bug) is the power supply.
The original Pi was very susceptible to a bad supply. If you're using a DC-DC convertor to feed the Pi, it'll need some good suppression or the Pi will get very upset. Same goes for cheap AC adapters.
I believe the new B+ is better in this respect, but I can't see which you have.
If it was powering on but didn't boot and this turned out to be the SD connector pins, I would replace the Pi if your solution was to "heighten" them.
I've had this on a couple of Pis and while the fix works, they usually go again within a few weeks/moves. Not the kind of unpredictability LOHAN would like I think.
I'm going to try blobs of duct tape under the pins next to give them something to rest on, then I can at least say I fixed a Pi with duct tape.
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