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Stardate: 20220120.1746
Location: xiled rumination concentrator
Input Device: xrc console
Audio: aNONradio - Myocyte w/ DJ ffog
Visual: xrc interior, interior LED colers fading, cycling.
Emotional State: Fed.

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1U Raspberry Pi NAS 3of3 (cont.) Previous phost[1]

After I realized I could repurpose the power supply, it got my
mind working.  I decided that I would need to add 2 female USB
ports and 2 ON/OFF switches to the case.  Luckily, I had those
items in my stash of electronic components.

Soldering is one of those things that I enjoy doing, but it takes
me awhile, especially since I don't do it too often.  I had to
make 2 circuits, which basically looked like this:

 +5V wire from power supply -> terminal block -> ON/OFF switch ->
 USB jack > terminal block -> -5V wire from power supply

Since I get freaked out when doing anything electrical, I did a
5 volt USB LED light "hello world" circuit test with an external
USB 5 volt battery charger, breadboard, and jumper clips.  Good
thing I did since I had the pinout reversed on the female USB
jack.  Here's a pic.[2]


[2] LED "hello world" circuit test with external USB 5V battery.

After that I soldered the circuit together, crimped terminal
connectors to the wires from the power supply, and put in the
terminal block.  Then I had to drill 2 holes in the front of the
1U case for the 2 ON/OFF switches.  Here is a pic of the switches
mounted to the case. [3]


[3] ON/OFF switches installed on the front of the case.

For sanity's sake, I did another LED "hello world" circuit test
with the power supply, first with a battery with AC power and then
wall power.  Another pic.[4]


[4] LED "hello world" circuit test with power supply attached to AC power

Then I mounted the 2 Raspberry Pi2's and 2 WD Pi Drives.  Western
Digital used to make Raspberry Pi drives and accessories under
their WDLABS project, which is now defunct.  I picked up some drives,
cables, and a case during their fire sale.  They had a tailor-made
cable that allowed you to connect the Pi and the drive using 1
microUSB cable, which is mounted in the 2 USB jacks.  Here is a
pic of the case with the Pis.[5]


[5] 1U case internals with 2x Raspberry Pi2 and 2x WD Pi Drives

For the Pis, I used openmediavault[6] for both NAS servers, which
I have used in the past and had no problems.  Here is a pic of
the NAS booting up when attached to mains power. [7]


[7] Testing NAS attached to mains power.

After that, I tidy'd the cabling and closed her up.  Obligatory
decals were added to cover most of the unused holes from the
switch.  I also included 2 USB extension cables to each Pi for
attaching external storage and backups without opening the case.
Here's the front panel pic.[8]


[8] 1U Pi NAS front panel

Here's a pic of the 1U Pi NAS mounted in my desk. [9]


[9] 1U Pi NAS mounted in the rack on the left side of the lab desk.

The Pi works out pretty good for now.  There are other modifications
I would like to do, but kept those for another time.  Overall, I had
fun putting this together.  I probably should take more breaks,
especially when soldering and also remove my contacts when I solder
since I am myopic.  Good thing that Raspberry Pi 2 is good enough
for this project since it doesn't use as much power as the newer
Pis.  I should run some tests.  Also, the way I put it together
makes it easy to repurpose if/when I need to put different devices
in the case.

[1] gopher://sdf.org/1/users/xiled/phlog/2022/20220118_1u_pi_nas_2of3
[2] LED "hello world" circuit test with external USB 5V battery.
[3] ON/OFF switches installed on the front of the case.
[4] LED "hello world" circuit test with power supply attached to AC power
[5] 1U case internals with 2x Raspberry Pi2 and 2x WD Pi Drives
[6] https://www.openmediavault.org/
[7] Testing NAS attached to mains power.
[8] 1U Pi NAS front panel
[9] 1U Pi NAS mounted in the rack on the left side of the lab desk.

20220117_1u_pi_nas_1of2
    - 1U Raspberry Pi NAS (part 1of2)

20220118_1u_pi_nas_2of3
    - 1U Raspberry Pi NAS (part 2of3, OK, I lied.)

20220120_1u_pi_nas_3of3
    - 1U Raspberry Pi NAS (part 3of3)

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