A Raspberry Pi or Mr. Clock-workers server

Part list:
Picture No. 1

  • Raspberry PI model B with 512 MByte ram
  • Raspberry PI camera
  • 16 GByte SD card
  • WLAN USB stick (TP-LINK TL-WN722N)
  • Freecom 500 GByte USB hard disk
  • 4  – Port USB – HUB (Typhoon)
  • Glasdome 11″ high / 6,3″ diameter

A Raspberry Pi or Mr. Clock-workers server

Picture No. 2

  • 7 Port USB HUB
  • Switch mode power supply, providing +5V switched, +5V permanent, +12V, -12V (VOLTEK SPEC7188B) more infos here: CLICK. The power supply acts like a ATX computer power supply. It provides +5V a a permanent voltage to be used to switch the power supply on and of via a special input wire.

Picture No. 3

  • Vintage lamps, formal used with a 230V neon bulb. I replaced the bulbs by LED bulbs normally used as replacements parts for the 6,3 V bulbs in pinball machines.
  • A bakelite switch to control the power supply
  • A momentary switch to control the ATXraspi circuit.
  • A vintage meter. Used to display the +5V power

Picture No 4.

  • ATXraspi circuit to control power on/off. See here: CLICK

Step 2: Stripping the electronics and the USB cables

Carefully I removed the cases from the HUB, the WLAN stick and the hard disk.
I removed the mantel from all USB cables and the USB plugs to give them a more technical look.
This can be done very carefully with a sharp knife.

I soldered the +5V wires directly to the PCB of the 4 port USB HUB

Step 3: Building the frame and mounting the parts

The frame for mounting the inner parts is made of wood.
Later painted to black. I drilled some holes for the cabling and attached some brass washers.

Then I mounted all the parts on that wooden framework.

On picture No. 6 you can see the cabling between the PI and the HDD and the 4 port USB hub.
The second USB port of the Pi was connected to the 7 port HUB in the base case.

In this phase I connected everything together temporary and tested the whole system.

A Raspberry Pi or Mr. Clock-workers server

Step 4: Mounting the frame to the dome and final cabling

Picture No. 2
The frame was mounted on the socket of the glas dome.

Picture No. 3
The ATXraspi switch controls the power of the R-PI. The PI has no power on / power off circuit like an normal computer. With this circuit it is possible to to control the shutdown procedure of the PI by pressing the power button 4 seconds. than a small script is started and shutdown the PI. After a correct shutdown the circuit switches the main power of the PI of. How to connect the ATXraspi to the PI can be found here: CLICK.

All Raspberry PI connections are connected via short cables to the backplane of the base case.


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