HardLabs

Mainboard

palthedog·Udong·ecad/mainboard/mainboard.kicad_pcb

Mainboard PCB layout, top view — open source RP2040/RP2350 board by palthedog

About the Mainboard PCB

Mainboard is an open source RP2040/RP2350 PCB design by palthedog, published on GitHub. It is a 4-layer board measuring 280 × 150 mm, with 106 components from 24 distinct parts.

Its main chip is the W25Q128JVS, from the RP2040/RP2350 family. Other key parts include the NCP1117ST33T3G, USBLC6-2SC6, RP2040 and CD4051BM96. By type, the board carries 50 capacitors, 28 resistors, 16 relays, 6 ICs, 2 connectors and 2 switches.

From the project

-- Libraries Install libraries below -- Keyswitch Kicad Library can be installed via "Plugin-Content manager" -> Library

-- Libraries Install libraries below -- Keyswitch Kicad Library can be installed via "Plugin-Content manager" -> Library

-- 3D models Configure Kicad path so that Kicad can find 3D models saved in our project dir. In the project's main menu, click "Setting" -> "Configure Paths" Then, add a new path and Set Name to UDONGDIR and Path to (path-to-your-working-directory)/Udong/ecad`

Main components on the Mainboard

NCP1117ST33T3GUSBLC6-2SC6W25Q128JVSRP2040CD4051BM96

Mainboard bill of materials (BOM)

106 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
NCP1117ST33T3G
U1
1
USBLC6-2SC6
U2
1
W25Q128JVS
U3
1
RP2040
U5
2
CD4051BM96
U22, U23
1
ABM8-272-T3
Y1
1
TYPE-C-31-M-12
J1
1
C160403
SWD
J2
16
DRV5056A3XQDBZXR
DRV5056A3xQDBZxR
K0, K1, K2, K3, K4, K5, K6, K7 +8
2
SW_Push
SW3, SW4
1
LED
D1
3
10U
10u
C1, C2, C20
1
4.7NF
4.7nF
C3
10
100N
100n
C4, C5, C6, C7, C8, C9, C10, C11 +2
2
1UF
1uF
C13, C14
2
15P
15p
C18, C19
32
1UF
1uF
C21, C22, C23, C24, C25, C26, C27, C28 +24
3
10K
10k
R1, R9, R30
2
5.1K
5.1k
R2, R3
3
1k
R5, R13, R32
Show 4 more
QtyPartRefs
1
1M
R7
1
470
R8
2
27
R10, R11
16
100
R14, R15, R16, R17, R18, R19, R20, R21 +8

Mainboard design files

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

Mainboard: common questions

What microcontroller does the Mainboard use?

The Mainboard is built around the W25Q128JVS, from the RP2040/RP2350 family.

How big is the Mainboard PCB?

The Mainboard measures 280 × 150 mm, has 4 copper layers and is 1 mm thick.

How many components are on the Mainboard?

106 components, from 24 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 Mainboard design files?

From the palthedog/Udong 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 Mainboard design in my own project?

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

Can I test firmware for the Mainboard 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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