HardLabs

Jamboard

jamdotjar·jam56s·pcb/jamboard.kicad_pcb

Jamboard PCB layout, top view — open source RP2040/RP2350 board by jamdotjar
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About the Jamboard PCB

Jamboard is an open source RP2040/RP2350 PCB design by jamdotjar, published on GitHub. It is a 2-layer board measuring 3.6 × 3.3 mm, with 231 components from 14 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. By type, the board carries 116 diodes, 56 capacitors, 54 switches, 3 connectors and 2 ICs.

It belongs with the keyboards designs in this gallery.

From the project

A fully custom 56-key column-staggered hotswap split keyboard

I'll replace this with a proper photo once it's built, but for now heres a quick render

This is my first custom keyboard design, and my second hardware project. It was designed with a few goals in mind: 1. to be functional ( not broken, hard to break ) 2. to be mine ( my own design, for my use case ) 3. to be simple ( simple to use, simple to build ) 4. to be something I'll actually use.

Jamboard, from the project README
From the project README

Main components on the Jamboard

Pico

Jamboard bill of materials (BOM)

231 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
Pico
U1, U2
1
OLED_128x32
J1
1
RJ45
J2
1
RJ45
J3
26
SW_PUSH_45DEG
SW_Push_45deg
S2, S3, S4, S9, S10, S11, S12, S17 +18
26
SW_Push_45deg
S5, S6, S7, S8, S13, S14, S16, S21 +18
1
SW_PUSH_45DEG
SW_Push_45deg
S49
1
SW_Push_45deg
S53
56
D
D1, D2, D3, D4, D5, D6, D7, D8 +48
1
1N4148
D57
29
SK6812MINI
D58, D59, D64, D65, D66, D67, D68, D73 +21
29
SK6812MINI
D60, D61, D62, D63, D69, D70, D71, D72 +21
1
1N4148
D115
56
C
C1, C2, C3, C4, C5, C6, C7, C8 +48

Jamboard design files

The KiCad project lives in the jamdotjar/jam56s repository on GitHub; these links point at the commit this page was built from.

Jamboard: common questions

What microcontroller does the Jamboard use?

The Jamboard is built around the Pico, from the RP2040/RP2350 family.

How big is the Jamboard PCB?

The Jamboard measures 3.6 × 3.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Jamboard?

231 components, from 14 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Jamboard design files?

From the jamdotjar/jam56s repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Jamboard design in my own project?

The repository has no license, so all rights stay with jamdotjar. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Jamboard without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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