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Fudge board

mudd-spec·fudge-board·PCB/fudgeboard.kicad_pcb

Fudge board layout, top view — open source RP2040/RP2350 board by mudd-spec

About the Fudge board

Fudge board is an open source RP2040/RP2350 PCB design by mudd-spec, published on GitHub. It is a 2-layer board measuring 21 × 51 mm, with 50 components from 23 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the BQ24072RGT, W25Q128JVPIQ and LD39050PU33R. By type, the board carries 21 capacitors, 15 resistors, 4 ICs, 4 connectors, 3 diodes and 2 switches.

It belongs with the power & battery and dev boards & breakouts designs in this gallery.

From the project

This is an RP2040 dev board created based off the guide from Blueprint at Hackclub!

Fudge board, from the project README
From the project README

Main components on the Fudge board

BQ24072RGTRP2040W25Q128JVPIQLD39050PU33R

Fudge board bill of materials (BOM)

50 components, 23 distinct parts.

QtyPartRefs
1
BQ24072RGT
U1
1
RP2040
U2
1
W25Q128JVPIQ
U3
1
LD39050PU33R
U4
1
Crystal_12MHz
Y1
1
USB_C_Receptacle_USB2.0_14P
J1
2
Conn_01x20
J2, J3
1
Conn_01x03
J4
2
SW_Push
SW1, SW2
1
Good Input LED
D2
1
Charging LED
D3
1
LED
D4
4
10uF
C1, C2, C19, C21
12
0.1uF
C3, C4, C5, C6, C7, C8, C9, C10 +4
3
1uF
C11, C14, C20
2
33pF
C15, C16
2
5.1K
R1, R2
2
27
R3, R4
3
1k
R5, R7, R15
3
10K
R6, R8, R11
Show 3 more
QtyPartRefs
3
1.5K
R9, R10, R14
1
1.13K
R12
1
1.18K
R13

Fudge board design files

The KiCad project lives in the mudd-spec/fudge-board repository on GitHub; these links point at the commit this page was built from.

Fudge board: common questions

What microcontroller does the Fudge board use?

The Fudge board is built around the RP2040, from the RP2040/RP2350 family.

How big is the Fudge board?

The Fudge board measures 21 × 51 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Fudge board?

50 components, from 23 distinct parts. The full bill of materials is listed on this page.

Where can I download the Fudge board design files?

From the mudd-spec/fudge-board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Fudge board design in my own project?

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

Can I test firmware for the Fudge board 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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