Hello all, been a short while.  This isn’t so much as a Technical Article, but a How-To. This article is about a project I got to thinking about and I mounted 2 x Pi-3’s  2 x 1-TB Hard Drive, one each for the Pi-3’s and another 4-TB HD for media storage. But I wanted everything to be all localized, probably so if anyone breaks in they only have to grab the one item to take it all. The seller on eBay is “mdstkr” and sells a very nice Sidewinder case for Two Pi’s at http://www.HDZCONCEPTS.COM. Very nice mounting stand and is a thick acrylic and uses brass standoffs. Individual levels are available also. Now on with my project. I wanted to add in the Raspberry Pi s Shutdown or Reboot switch idea from http://iot-projects.com/index.php?id=raspberry-pi-shutdown-button. Good article and should be visited. So I will not go into the software portion as they explain it very well, but if you have questions, feel free to ask me.

Previously I had installed the following 2 button switch from an AmateurLogic.TV episode, I’m going to guess somewhere around episode 73? It allowed for one button to Shutdown and the other to Reboot the Pi. I had installed it on a Pi-2 which is no longer with us in usable form as the Lightning God’s took it away. In Figure 1 was my instillation and it preformed very well.

PI_Shutdown2

Figure 1.

 Of not on the the single button instillation from http://iot-projects.com/index.php?id=raspberry-pi-shutdown-button. Trying to be sure I’m not plagiarize here, and it is a good time to upgrade.

 Now my install is a bit different from just doing it to one Pi, but doing it to Two Pi’s and having some hard drives in there with it and as you may have been able to tell I went with HD’s and Hub’s. In Figure 2 I have done a couple things before I took this picture. I added in the already wired switches in this picture and I cut a piece of plastic to hold the switches off from the Sidewinder Pi case.

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Figure 2.

 In the picture you may see a couple added in rubber feet. I later cut each in half and use them to cushion the HD’s in place to keep them from slipping out between the additional Sidewinder cases which I just vertically mount.

 Now I tackled the 330 Ohm and 10K Ohm resisters needed in this project. they are soldered onto one side of the switch and I made sure to use several different sizes of heat-shrink tubing. I went to a still somewhat parts functional Radio Shack to get 4 momentary operated switches, 1 pack of of 4 each 330hm resistors a 4 pack of 10K ohm resistors  and the heat-shrink tubing. The wires I had lying around from some Arduino projects.

 Now in Figure 3. I have started wiring the switches, both are wired the same so I’ll only address wiring  one here. Now from the previous mentioned site for this project (http://iot-projects.com/index.php?id=raspberry-pi-shutdown-button) I used the following picture/diagram for soldering my switches up and the diagram is in Figure 3.rpi_buttonFigure 3.

 Continuing on now with Figure 4, I show the resistors and some on the heat-shrink tubing. I actually used 3 different sizes of HS Tubing. This picture also shows the piece of plastic I had drilled and cut for this project. Figure 5 shows a little closer view of the  location for the resistors and the HS Tubing.

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Figure 4.

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Figure 5.

 In Figure 6 we have a picture of the Pi-3’s on the lower level and a 1-TB USB drive I got from Amazon at about $51.99, now I have two of these one for each Pi-3. Next up is a 4TB drive for media storage, mainly Videos I watch. Again Amazon at about $129.00. You should be able to see black rubber foot I cut in ha;f to hold the 4TB drive in place. I use 2 rubber feet cut in half and they are at each side of the drive.

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Figure 6.

 This next part is important shown in Figure 7 as I power everything from a USB Hub. The Sabrent Hubs I have use 4-Amp power supply and they are ran from a UPS system. Hopefully I won’t have too many power failures. These are the best little hubs, two ports are just for power and exactly right to power a Pi-3.

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Figure 7.

 Now with the Hubs mounted by Velcro I have a work station or mini cluster of 2 Raspberry Pi-3’s. Everything shown here is without the switches mounted.

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Figure 8.

 Here (Figure 9) we have a working unit. The switches are Red for the left Pi-3 and Black for the Right Pi-3. The Hub’s are on top.

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Figure 9.

 Well some good news. I emailed Eric Knuteson of HDZ Concepts, he makes the Sidewinder Case for two Raspberry Pi’s, the one I am using in this project. I asked him about making some standoff piece, just like the rest, just extended out so the Buttons could be mounted on. Within a week of emails and some very rough drawings I sent in he sent me a New Special Piece for my Pi mini Tower project. Here is a scan in Figure 10 of the original case design and on the right the new one for the Shutdown/Reboot Switches.

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Figure 10.

 This allowed for a secure mounting for the buttons. Now if you get buttons make sure the screw shaft is a bit longer than the thickness of the Sidewinder Case of approximately 5.5 mm or about 7/16″ inch thick. This is a very nice strong platform he makes and was very open to my request. He even had it fulfilled with the 5 days of my proposal; now that is “servicing your customer”. I sent him some Pictures and he seemed pleased with the results also. I am not in any way a representative of HDZ Concepts, nor do I receive any monetary funds from them, but I do like Eric and the way he does business.

 Following are the new piece installed on my Mini-Pi Tower.

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Figure 11.

and

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Figure 12.

 As I hope you can tell this is much better than my make-shift piece of plastic from Figures 4 and 9. If you plan on such a project look at HDZ Concepts on eBay or at:

https://www.etsy.com/listing/258603892/raspberry-pi-3-pi-2-b-stackable-case?ref=shop_home_active_24

 If you would like to see the Pi-3 online check out:

http://w4qed:hamshack.info

http://w4qed.hamshack,info:8008

 Although not available to the outside it runs my Mister House Home Automation System along with miniDLNA media server for the home. All on one Pi-3. The second Pi-3 I am going to use for other projects as they come along to develop on. Now I do have a Pi-2b on my Broadband Hamnet as a shelter web-server and it has been working for about 28 days with no reboots or power downs.

 In conclusion I am not a very tedious project person, but I do like my stuff to look good. I guess all my focus is generally on the software. If you have questions I’ll do my best to answer and take a better picture if you need.

QED.

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