Blueprint

PicoBoard

This is a basic 75% keyboard powered to run on a Raspberry Pi Pico, it will be a sandwich mount keyboard.

Created by PenguinMo PenguinMo

Tier 3

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Timeline

PenguinMo PenguinMo added to the journal ago

Middle Plate

I did the middle plate and made it for clip in stabilizers next is top plate and then i will make the BOM and i will be done this was eaiser than expectedScreenshot 2026-01-24 181313

PenguinMo PenguinMo added to the journal ago

Made the bottom

I made the bottom of the case this was easy I used the hackpad tutorial, next I'm making the middle plate which isn't something i've done before so it might be a bit harder image

PenguinMo PenguinMo added to the journal ago

Firmware

I made for the PCB using the layout and KMK it was kind of easy as I have used python and copilot helped and went over my code to make sure everything was looking fine next CAD which might be challenging.
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PenguinMo PenguinMo added to the journal ago

Art

I decided to make it look cool and add some art with my repo link and my slack name and some pokemon I think it looks nice next i will work on my firmware.
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PenguinMo PenguinMo added to the journal ago

Routing Part 3: The Finale

Ok I connected up the wires to the Raspberry Pi and I have zero errors and 85 warning one is that text will be clipped and all the others are just things being on different sides, this was easy now that I was in the flow it seemed kind of fun I think I'll do firmware next as I am horrible at CAD.
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and there is the image of everything routed.

PenguinMo PenguinMo added to the journal ago

Routing Part 2

In this section I did a bit of fixing as when I started it turned out that the switches were counting to the right and not down so it took a bit of setting fixing and also the global header had some extra junctions that needed to be removed but the routing was easy, I mean it was slow but I did it first try because I have 22 things not routed and that is the amount of pins I have so that's what I do next followed by firmware or CAD I'm still deciding which one to do next.
Screenshot 2026-01-03 213407

PenguinMo PenguinMo added to the journal ago

Routing Part 1

I began the routing process by routing all the switches this was mildly annoying because in the end the diodes were in the wrong places so I had to go back and fix them then re do the routing it took a bit but was rather easy I'll do the row next so this should be done soon
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PenguinMo PenguinMo added to the journal ago

Lined up stuff

I lined up the keyboard switches It took a while, and I have to re do it it took 1.5 hours next I will route the switches then I will get to work on the CAD
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PenguinMo PenguinMo added to the journal ago

Did some more reasearch

I had to do a bit of searching around the internet about what keyboard mounting style I should use after watching some video's and talking to @krunch about I will do a sandwich mount and it seems cool now i can arrange and route my PCB knowing what style I will do!
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PenguinMo PenguinMo added to the journal ago

Importing some stuff

So I had to import some stuff like the raspberry pi so I could add the labels on to it the labels went smoothly and it only took 30 min not including the time it took for me to do the importing and help next I'll route and organize all the stuff and I also need to figure out how I will do the firmware and the case as it seems to be coming up soon!
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That's the picture of the raspberry pi with all the global labels on it!

PenguinMo PenguinMo added to the journal ago

Added the Global Headers

I added the global headers onto the schematics next I'll take a break and add Wakatime on to this computer before I add the headers on to the micro controller there's not much to say next is microcontroller which is probably the last thing I'll do today!

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PenguinMo PenguinMo added to the journal ago

Scematic + Layout

I did the scematic and layout for the keyboard it's going to be a 84 key computer the microchip im planning on is going to be an Rasberry Pi pico it cheap so it will be nice to use
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My layout is based on the Keycool84 with 84 keys ee767cd5-037b-4f6a-8476-bd111aaf9999

Now that this is one the next step is to add labels and connect up to my microcontroller of choice and the route it up then I'll be finish with the PCB part of this build

PenguinMo PenguinMo started PicoBoard ago