5 ms·
Author here if you have questions...
by kens 3mo ago
Author here if you have questions...
- joezydeco 3mo agoDid Shuttle fly with these bodge-wired boards or were these used for development on the ground?
- kens 3mo agoI don't know if these boards were flown. They were coated with conformal coating (which I hate for reverse-engineering), which is usually omitted from prototypes. I believe that bodge wires are okay for flight if they are done properly.
- joezydeco 3mo agoThat's amazing. My bodge-wired work won't last 10 miles in the trunk of my car.
- microgpt 3mo ago[dead]
- HeyLaughingBoy 3mo ago> conformal coating (which I hate for reverse-engineering), which is usually omitted from prototypes Bad memory from a couple years ago. Debugging a machine under development at a customer site, which was luckily only a few blocks from the office, since I was there a lot, I would get random resets, hangs, and loss of debug information from the SWD probe. Swapping boards, debug probes, nothing we could think of fixed it and it was so random it was hard to track down. Long story short, after it happened on one occasion when the project EE was also debugging something and he touched one of my probes, we found that there was conformal coat residue on some of the debug pins and the probes would occasionally vibrate onto an insulated section, causing loss of signal. No idea why the board house put it on a prototype, but we probably lost a few dozen hours due to that one problem.
- ustad 3mo agoAs always - great article. FYI - The link for Peter Kogge is broken and should probably link to https://en.wikipedia.org/wiki/Peter_Kogge https://en.wikipedia.org/wiki/Peter_Kogge
- deleted 3mo ago[deleted]
- inamberclad 3mo agoAmazing article, thanks! However, I think when you said "...heat was transmitted by convection through the metal plate inside each page...", you probably meant conduction, right? Convective heat transfer in metal would be a worrying event on the Space Shuttle!
- kens 3mo agoOops, I've fixed that now.