▲ 134 r/minilab
Replaced Multiple Power Bricks with DC Rail
Since my last minirack update, one thing that bothered me was the power situation with the power bricks. In the most recent update of my miniracks:
- Replaced all the AC/DC power supplies with a single Meanwell DRS-240-12 supplying 12VDC rail, which in turn supplies:
- 1x 12vdc shucked minipc via direct rail
- 2x 19vdc shucked minipcs via 19v boosts
- 1x unifi non-poe switch via 5v (usb) buck
- 1x 12v fan controller (noctua ippc-3000 pwm top exhaust) via direct rail
- This allowed me to add a 12V Eco-worthy LFP battery for when power blips
- Standardized the 4U "blade"-style mini pc mounts easily adapting to different types of 100-140mm shucked minipcs.
I built a total of three of these mini racks and took the opportunity to spread out the control plane nodes for a bit of physical redundancy.
Still to do:
- A small raspberry pi to communicate to the DRS-240-12 over RS-485 and serve PSU metrics.
tldr: I didn't like the inelegance of the power situation so I made things a lot more complicated and expensive
u/cptjellybeans — 3 days ago