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Adafruit Feather RP2040

oihdesigns·Micro-DMM·PCBDesigns/RP2040/Adafruit Feather RP2040/Adafruit Feather RP2040.kicad_pcb

Adafruit Feather RP2040 PCB layout, top view — open source RP2040/RP2350 board by oihdesigns

About the Adafruit Feather RP2040 PCB

Adafruit Feather RP2040 is an open source RP2040/RP2350 PCB design by oihdesigns, published on GitHub. It is a 2-layer board measuring 67.3 × 50.2 mm, with 38 components from 18 distinct parts.

Its main chip is the RP2040_QFN56, from the RP2040/RP2350 family. Other key parts include the TMUX1108PWR and TCA9536DGKR. By type, the board carries 17 capacitors, 13 resistors, 3 ICs, 2 crystals, 2 diodes and 1 transistor.

It belongs with the dev boards & breakouts and test & measurement designs in this gallery.

From the project

A small, open hardware DMM

This is the PCB design and code for a 4.5 digit DMM/ instrumentation module. It is designed and written primairly for Arduino-style development boards.

I've developed this DMM in my work testing and troubleshooting electronics to make my life easier.

I've had Deep-Wiki index my documentation. It did a mostly okay job. You can read its summary here: [](https://deepwiki.com/oihdesigns/Micro-DMM)

Adafruit Feather RP2040, from the project README
From the project README

Main components on the Adafruit Feather RP2040

RP2040_QFN56TMUX1108PWRTCA9536DGKR

Adafruit Feather RP2040 bill of materials (BOM)

38 components, 18 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RP2040_QFN56
IC1
1
TMUX1108PWR
RT9080/AP2112-3.3
U2
1
TCA9536DGKR
MCP73831T-2ACI/OT
U3
1
DMG3415
Q3
1
USB Type C
X6
1
12MHz/12pF
Y1
1
NSR0320
D1
1
MBR0540
D4
4
10uF
C1, C4, C5, C20
2
22pF
C2, C3
9
0.1uF
C6, C7, C9, C11, C12, C13, C14, C15 +1
2
1uF
C8, C10
5
10K
R1, R2, R3, R4, R5
2
1K
R6, R11
1
100K
10K
R7
1
100R
5.1K
R8
2
27
R9, R10
2
5.1K
R12, R13

Adafruit Feather RP2040 design files

The KiCad project lives in the oihdesigns/Micro-DMM repository on GitHub; these links point at the commit this page was built from.

Adafruit Feather RP2040: common questions

What microcontroller does the Adafruit Feather RP2040 use?

The Adafruit Feather RP2040 is built around the RP2040_QFN56, from the RP2040/RP2350 family.

How big is the Adafruit Feather RP2040 PCB?

The Adafruit Feather RP2040 measures 67.3 × 50.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Adafruit Feather RP2040?

38 components, from 18 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 Adafruit Feather RP2040 design files?

From the oihdesigns/Micro-DMM 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 Adafruit Feather RP2040 design in my own project?

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

Can I test firmware for the Adafruit Feather RP2040 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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