5 ms·

I know that it's probably pretty well insulated with the layer of black crinkle paint, but I still get uneasy seeing that picture of the bare Raspberry Pi print

I know that it's probably pretty well insulated with the layer of black crinkle paint, but I still get uneasy seeing that picture of the bare Raspberry Pi printed circuit board sitting directly on top of the conductive metal case of the receiver while powered on. At least put a piece of paper or something behind it, right? Does anyone else worry the solder blobs or connector pins on the bottom of the board will short out?

neverartful 4y ago
I had the same thought when I saw the photo. I agree with you on this, I'd put something in between (probably at least cardboard).
woodruffw 4y ago
I do indeed worry about it -- I plan on putting it in a case pretty soon. (This is not a justification since you're absolutely right, but I've had a handful of different Pis running for years while sitting on painted metal. In my experience, SD corruption is much more common than shorts.)
- criddell 4y ago
  I used to use my Raspberry Pi as an Octoprint server but after the third dead SD card, I unplugged it. Are you doing anything on this setup to prolong the life of your SD card?
  - woodruffw 4y ago
    Nothing in particular: I believe HiFiBerryOS does some stuff under the hood to minimize unnecessary writes, but I didn't look too closely into it. The also provide shutdown and reboot buttons via their Web UI, which I greatly appreciate (and presumably help avoid any corruption that can happen when just yanking the power). For the other Pis I use, I see corrupted SDs roughly once every 18 months. I replaced a couple of repeat offenders with new cards (from a different vendor) a while back and things seem to have stabilized, so my (lay) guess is that some cards are just more finnicky on the Pi than others.
  - m463 4y ago
    I suspect that most of the SD card corruption could be remedied by an overlay fs. The way I did this before - with excellent results - was to run openwrt on a pi, which is designed well in this respect. There is no continuous logging or other nonsense to corrupt the filesystem when you lose power. I recently found out raspbian now allows you to do a (read-only) overlay filesystem: $ sudo raspi-config 4 Performance Options --> P3 Overlay File System Enable/disable read-only file system
    - criddell 4y ago
      Is it entirely read-only, or would I be able to still write when I want to? For example, Octoprint isn’t much use if I can’t upload models to print. My problems weren’t due to file system corruption. I think the cards wear out quickly due to writing.
    - deleted 4y ago
      [deleted]

neverartful 4y ago

I had the same thought when I saw the photo. I agree with you on this, I'd put something in between (probably at least cardboard).

woodruffw 4y ago

I do indeed worry about it -- I plan on putting it in a case pretty soon. (This is not a justification since you're absolutely right, but I've had a handful of different Pis running for years while sitting on painted metal. In my experience, SD corruption is much more common than shorts.)

criddell 4y ago
I used to use my Raspberry Pi as an Octoprint server but after the third dead SD card, I unplugged it. Are you doing anything on this setup to prolong the life of your SD card?
- woodruffw 4y ago
  Nothing in particular: I believe HiFiBerryOS does some stuff under the hood to minimize unnecessary writes, but I didn't look too closely into it. The also provide shutdown and reboot buttons via their Web UI, which I greatly appreciate (and presumably help avoid any corruption that can happen when just yanking the power). For the other Pis I use, I see corrupted SDs roughly once every 18 months. I replaced a couple of repeat offenders with new cards (from a different vendor) a while back and things seem to have stabilized, so my (lay) guess is that some cards are just more finnicky on the Pi than others.
- m463 4y ago
  I suspect that most of the SD card corruption could be remedied by an overlay fs. The way I did this before - with excellent results - was to run openwrt on a pi, which is designed well in this respect. There is no continuous logging or other nonsense to corrupt the filesystem when you lose power. I recently found out raspbian now allows you to do a (read-only) overlay filesystem: $ sudo raspi-config 4 Performance Options --> P3 Overlay File System Enable/disable read-only file system
  - criddell 4y ago
    Is it entirely read-only, or would I be able to still write when I want to? For example, Octoprint isn’t much use if I can’t upload models to print. My problems weren’t due to file system corruption. I think the cards wear out quickly due to writing.
  - deleted 4y ago
    [deleted]