Gridfinity 1x1 OLED display (SSD1306)

I noticed that the Gridfinity 1x1 bins are a perfect fit for the SSD1306 OLED screen, and as I really wanted to use these in my projects, I decided to create an extension to my gridfinity electronics workbench. This allows you to quickly grab one of these bins if you want to prototype a quick OLED display for your projects - connect up the power and I2C lines, and you're away! 

These 1x1 bins hold a SSD1306 screen, with a slot at the top to route some prototyping leads. If you use female to female, you'll end up with 4 sockets that fit flush with the surface, and really do replicate the breadboard feel. 

I've counter-sunk the M2 bolts that hold the screen in - and the female sockets can fit flush to the surface, which makes this all fit inside a stackable 1x1x21mm bin - which is pretty neat! If you don't have counter-sunk bolts - it'll hold fine with standard hex heads - it'll just not stack so neatly. 

So I'm trying out a concept with this design - which I'll expand on with my next posted model. I have added 2 layers of ribs around the bin. These will ‘click fit’ a 1mm deep panel. The top ribs are designed to allow you to push through them to get to the second layer if you wish - and the second layer is designed (with a slightly larger bottom rib) to prevent you from pushing the panel through it. There's a 1.5x8mm slot at the edge of every panel to get a screwdriver in to remove it as needed. I could have achieved the same with other fixings, but I felt that this was the most efficient on material, wasted the least space in the bins (so you could just use them as storage bins), and it's very quick to add or swap panels once you're used to it. The second layer was envisaged as somewhere to have a layer of components, below a top layer of controls or displays. See my other model posted today for the blanks for this concept. Very happy to take feedback, or see others improve on this concept. I'm on v6 of this panel already - and I'm happy that the fit is good on my printer - so I hope it travels well. 

All of this should print without any supports. The panel and bin should already be in the correct orientation for printing. 

The 4 leads (2.5mm square ends) will be a tight fit in the socket - it worked perfectly for the leads I have here - I've left a bit of tolerance on it, but enough to hold without glue in most cases. I found I could get them back out again if needed (with a screw-driver poke). I had 110mm long leads which JUST fit in the 1x1 bin.. it would be much neater if I were to cut them off an solder them onto the pins - but a delicate bend of the connector, and some neat folding soon got it all in, and ended up with a neat result. 

Sub-component stuff: 

The breadboard holder here is also a 4x2 gridfinity bin - https://www.printables.com/model/1134570-gridfinity-4x2-breadboard-holder-with-extras 

The SSD1306 OLED is everywhere.. this is the amazon prime version - https://amzn.to/40DPIde - but also available via lots of other places if next-day isn't the top priority. 

The jumper wires I used were 10cm female to female, eg in this set: https://amzn.to/4hlH6zg  and these are the magnets I use for all my gridfinity stuff: https://amzn.to/3DFTKtO.  

The wider electronics in the photo are part of a kit I bought for the Raspberry Pi Pico - which I would recommend - it comes with the breadboard, pico, power supply, jumper wires, LCD and a whole range of other bits to prototype some nice projects. https://amzn.to/4gSPci6

(Note: These are associate links, which means that they don't cost you any more, but I get a small cut if you purchase via these links. This isn't a big money-spinner, but I find it so useful to have sub-components linked in models that I download - so I know I'm getting exactly the right bits without much research, and it helps support my tinkering!). 

Gridfinity concept from Zack Freedman, Gridfinity Refined by Grizzie, solid bins originally via scheff and then I've modified from there..