HardLabs

Jolt2-left

tangybbq·keyboard·jolt2/jolt2-left/jolt2-left.kicad_pcb

Jolt2-left PCB layout, top view — open source RP2040/RP2350 board by tangybbq
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About the Jolt2-left PCB

Jolt2-left is an open source RP2040/RP2350 PCB design by tangybbq, published on GitHub. It is a 2-layer board measuring 151 × 98 mm, with 65 components from 29 distinct parts.

Its main chip is the MAX40200AUK, from the RP2040/RP2350 family. Other key parts include the AP2112-M3.3 and W25Q128JVP. By type, the board carries 31 connectors, 16 capacitors, 10 resistors, 3 ICs, 2 switches and 2 diodes.

It belongs with the keyboards and power & battery designs in this gallery.

From the project

Design files for my keyboards

This repo captures the design files associated with my custom keyboards.

These keyboards are primarily focused on Steno input, mainly using Plover. In the spirit of open steno, I have made these designs open. Anyone is free to make designs based on these keyboards, for non-commercial purposes. I am releasing the designs under the CC BY-NC 3.0 license. Specifically, this means if you wish to sell a product based on the design, you should talk to me.

Jolt2-left, from the project README
From the project README

Main components on the Jolt2-left

MAX40200AUKAP2112-M3.3W25Q128JVP

Jolt2-left bill of materials (BOM)

65 components, 29 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MAX40200AUK
RP2040
U1
1
AP2112-M3.3
U2
1
W25Q128JVP
U3
1
ABM8-272-T3
Y1
6
CONN_01X02
Conn_01x02_Pin
J1, J2, J4, J5, J6, J8
1
CONN_ARM_JTAG_SWD_10
Conn_01x02_Pin
J3
1
USB_C_RECEPTACLE_USB2.0_16P
Conn_01x02_Pin
J7
20
Conn_01x02_Pin
J9, J10, J11, J12, J13, J14, J15, J16 +12
1
USB_C_Receptacle_USB2.0_14P
J29
1
Conn_ARM_JTAG_SWD_10
J30
1
RJ45
J31
2
SW_SPST
SW1, SW2
2
BAV19W
SK6812MINI-HS
D1, D2
2
4.7UF
10u
C1, C2
1
4.7UF
100n
C3
1
1UF
100n
C4
1
1UF
1u
C5
1
4.7UF
1u
C6
1
100NF
100n
C7
7
100n
C8, C9, C10, C11, C12, C13, C16
Show 9 more
QtyPartRefs
2
12p
C14, C15
1
27
R1
1
180K
27
R2
2
5.1K
5.1k
R3, R4
1
5.1K
1k
R5
1
2.2
1k
R6
1
2.2
10k
R7
1
180K
1k
R8
2
27
R9, R10

Jolt2-left design files

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

Jolt2-left: common questions

What microcontroller does the Jolt2-left use?

The Jolt2-left is built around the MAX40200AUK, from the RP2040/RP2350 family.

How big is the Jolt2-left PCB?

The Jolt2-left measures 151 × 98 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Jolt2-left?

65 components, from 29 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 Jolt2-left design files?

From the tangybbq/keyboard 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 Jolt2-left design in my own project?

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

Can I test firmware for the Jolt2-left 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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