In this second post I’ll show you some details of what’s inside my case. To place the Raspberry card I’ve initially thought about using a cheap plywood piece as a base but I’ve immediately switched to the more reliable, insulated, and accurate PVC. By the way I’ve still initially used plywood just to take correct internal measurements for the final PVC shape.
The USB Hub
I had a very cheap 7 port USB hub lying around, it’s nothing special but it has a nice 1.5A 5V DC power adapter, I’ll use it to power up and extend the Raspberry at the same time, it’s so little and it fits perfectly inside the case with the Raspi card.
I’ve firstly dismantled it to get just the main board, I won’t use the original case. This hub resembles an object submitted from one of you in your comments, I’m pretty sure this is a product taken from an anonymous chinese manufacturer and rebranded in some way for our internal market, if you deal with a lot of objects you’ll probably find it somewhere in your local retail store, if it’s not possible just take a small usb hub somewhere else
It’s nice, simple and it will power up and extend the Raspberry USB ports as well
Adapting the base
I think the Raspberry is an awesome object: nice, simple, cheap, effective and it doesn’t need to drawn a lot of power, but the hw housing is a mess, if you deal with many electronics cards and you want to create a case for your new device you just need to fix it properly, with screws most of the time. If you’ve external ports like ethernet and USB they’ve to be properly aligned and possibly be on the same side to see a clean and nice job, like PC motherboards for example.
Raspberry Pi has nothing of these layout features and I/O ports are distributed on each side.
When you’ve a so called housing with components placed where there’s some free space just to get the smallest possible size you’re in trouble, and if don’t have holes for your screws you’re in a big trouble.
With a little bit of creativity your case will be a little bit nice and you’ll solve some of these troubles, to have a proper placement inside the base I’ve decided to use a mix of binders and plastic pillars, it’s not so nice and clean but it works. I’ll look forward for a newer version of the card with at least holes for the screws
Until then let’s have a look of what the PVC base might be with the raspberry near it
I’ve placed few small felt pieces where the Raspi should be fixed, in the picture you’ll see few cuts on the felt where the SD card slot will reside and few holes for the binders and plastic pillars. Additional eyelets will be discussed in the next post
As usual feel free to post your suggestions and see you in the next days for a post update