HardLabs

Mist65

fadelhbr·Mist65·mist65/pcb/mist65.kicad_pcb

Mist65 PCB layout, top view — open source RP2040/RP2350 board by fadelhbr

About the Mist65 PCB

Mist65 is an open source RP2040/RP2350 PCB design by fadelhbr, published on GitHub under the MIT license. It is a 2-layer board measuring 303.9 × 94.2 mm, with 137 components from 13 distinct parts.

Its main chip is the RP2040-ZERO, from the RP2040/RP2350 family. By type, the board carries 70 switches and 66 diodes.

It belongs with the keyboards designs in this gallery.

From the project

mechanical keyboard build form scratch

Part list | Name | Quantity | Description | | :-------------| :----------- | :------------------------- | | 1N4148 | 66 | DO-35 (1N4148 or similar). | | RP2040 Zero | 1 | RP2040 Zero (You can use all models, but first pay attention to the pinout). | | Kailh hotswap socket (optional) | 66 | if you want hotswap features and south facing switches. | | Mist65 PCB | 1 | Mist65 PCB is available for purchase here.|

Mist65 bill of materials (BOM)

137 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2040-ZERO
RP2040-Zero
RZ1
1
MX_stab
S1
1
MX_stab
S2
2
MX_stab
S3, S4
52
1u
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +44
1
2u
SW14
2
1.5U
1.5u
SW15, SW28
1
1u
SW29
2
1.75U
1.75u
SW30, SW55
2
2.25U
2.25u
SW42, SW44
5
1.25U
1.25u
SW58, SW59, SW60, SW62, SW63
1
6.25U
6.25u
SW61
66
1N4148
D1, D2, D3, D4, D5, D6, D7, D8 +58

Mist65 design files

The KiCad project lives in the fadelhbr/Mist65 repository on GitHub; these links point at the commit this page was built from.

Mist65: common questions

What microcontroller does the Mist65 use?

The Mist65 is built around the RP2040-ZERO, from the RP2040/RP2350 family.

How big is the Mist65 PCB?

The Mist65 measures 303.9 × 94.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mist65?

137 components, from 13 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 Mist65 design files?

From the fadelhbr/Mist65 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 Mist65 design in my own project?

Yes, under the terms of its MIT license, which fadelhbr chose for the repository.

Can I test firmware for the Mist65 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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