Search Results for “Server”

[Mini-Server] UPS Redesign

My portable USB phone charger’s LCD screen broke today, so i decided to tear it apart and use its 11,200 mAh battery for the server UPS. I also recently built a 3D printer, so I designed a case to hold the components to my budget Ebay UPS. I decided to refine the schematic the same … Continue reading [Mini-Server] UPS Redesign

Mini-Server [2016]

The Mini-Server is a tiny, but very useful server that can be run 24/7 without the drawbacks related to running a large server year-round. The project end goal is a very efficient, quiet, useful and beautiful server. The server can be situated in my room to run my web-server and various tasks I need to have performed. Design … Continue reading Mini-Server [2016]

[Mini-Server] UPS

I built a UPS using a an EBay sourced boost converter and lithium ion charge controller. I used a lithium ion battery I salvaged out of an old bluetooth speaker. I mounted it all to a sheet of aluminum. Total cost: $3 I used a 3.3v signal from the power supply to tell the pi … Continue reading [Mini-Server] UPS

[Mini-Server] Board Assembly & Install

I soldered all the components to the board and now it is installed! It works great and it looks much better than before!

[Mini-Server] The boards are here!

The PCBs finally arrived from China!

[Mini-Server] “Pi-Hat” Board Design

Using Eagle’s autorouter, I condensed all the pull-ups/pull-downs, transistors, and headers onto a clean board. This will snap on the top of the pi and provide a clean interface to the peripherals.

[Mini-Server] Server Circuitry

I secured the LCD in place with screws and made a 3.3v to 5v 2N3904 level shifter for the I2C communications between the screen and the pi. The switch is wired and works as an interrupt in the python code. I also used one of the pi’s pwm outputs to pulse the button LED, so … Continue reading [Mini-Server] Server Circuitry

[Mini-Server] Faceplate!

Wow! Why did they paint it?! SteelSwitch… more like AluminumSwitch

[Mini-Server] Case mods

The case has a small fan that can be controlled with pwm, and a LED/pushbutton. No screen! I had a $3 Chinese I2C 16×2 LCD display laying around. So, I got to work with the dremel and file and now the case has a LCD. I need to have the faceplate machined and refinished. I modeled the … Continue reading [Mini-Server] Case mods

[Mini-Server] I bought a case!

I found a beautiful Mini-ITX case on eBay with a power supply for $45. So I bought it… The SteelSwitch sticker has to go.