cross-posted from: https://lemmy.world/post/25343745

cross-posted from: https://lemmy.world/post/24827140

I have started to implement serial uart in programmable IO. It may come useful for someone who has their PCBs printed with serial connected to wrong pins.

Hi everyone!

I’m planning to repurpose an old computer case to house a few Raspberry Pis and could really use some advice.

First, I’m trying to figure out the best way to mount the Raspberry Pis inside the case. Are there any good DIY solutions, or are there premade mounts designed for this kind of project? I want them to be secure but accessible if I need to make changes.

Next, I’d like to power all the Pis centrally. Is there a way to do this efficiently without using separate power adapters for each Pi? I’ve heard of some solutions involving custom power supplies, but I’m not sure where to start.

I’m also thinking about cooling. Would the case’s old fans be sufficient, or should I add heatsinks or other cooling methods to each Pi? I want to make sure everything stays cool, especially if the Pis are running intensive tasks.

Finally, what’s the best way to handle I/O? I’ll need to route HDMI, USB, Ethernet, and other connections out of the case. Are there panel kits or other ways to organize the cables neatly?

I’d love to hear your suggestions or see examples if you’ve done something similar. Thanks in advance for your help!

I'm looking for a solution to replace the SD card in my raspberry pi 4 with an SSD.

There are many "hats" from geekworm that do exactly that. However, they all use the USB port and mentioned that the adapter can create interference in the 2,4 GHz range.

The main purpose of the raspi is being the Home Assistant server and the Zigbee hub (Raspbee II dongle on the io pins). Zigbee is using 2,4GHz as well and I don't want the connectivity being impaired.

What's the best option here? I thought of getting an "external" ssd so the adapter isn't as close to the dongle. Does the interference from the adapter itself or the USB port on the raspi?

I have an external SSD which was automatically mounted to /media/user/longstring. The first thing I did reformat it to ext4. After a reboot, longstring hasn't changed but everything I put on the SSD is gone and I can't cd into it or ls without sudo.