HardLabs

Chubby hat

cyber-murmel·chubby-hat·source/chubby-hat/chubby-hat.kicad_pcb

Chubby hat layout, top view — open source RP2040/RP2350 board by cyber-murmel

About the Chubby hat

Chubby hat is an open source RP2040/RP2350 PCB design by cyber-murmel, published on GitHub under the MIT license. It is a 2-layer board measuring 143.5 × 91.4 mm, with 95 components from 42 distinct parts.

Its main chip is the RP2040-Zero, from the RP2040/RP2350 family. Other key parts include the AMS1117-3.3, USBLC6-2SC6, P25Q40H-SSH-IT, RP2040 and W25Q16JV. By type, the board carries 23 connectors, 22 capacitors, 17 resistors, 6 ICs, 5 diodes and 4 transistors.

It belongs with the dev boards & breakouts and usb & debug tools designs in this gallery.

From the project

a PCB that turns the Colorlight 5A-75B into an easy to use development FPGA platform for cheap

- USB to JTAG via STM32 or FTDI - two 3x Pmod ports

- USB to JTAG via extra dev board or on-board RP2040 - three 2x Pmod ports

The Makefile calls a Python script that makes use of sexptdata to parse KiCad files. Install Poetry and run poetry shell followed by poetry install in the root of this repositoryto set up a virtual environment with the required package(s). To re-enter this environment, simply run poetry shell in the root of this repository.

Chubby hat, from the project README
From the project README

Main components on the Chubby hat

AMS1117-3.3RP2040-ZeroUSBLC6-2SC6P25Q40H-SSH-ITRP2040W25Q16JVAdafruit_QT-Py_SAMD21

Chubby hat bill of materials (BOM)

95 components, 42 distinct parts.

QtyPartRefs
1
AMS1117-3.3
U1
1
RP2040-Zero
U2
1
USBLC6-2SC6
U3
1
P25Q40H-SSH-IT
U4
1
RP2040
U5
1
W25Q16JV
U6
1
Adafruit_QT-Py_SAMD21
A1
2
BC807DS,115
Q1, Q3
2
AO3401A
Q2, Q4
1
X322512MSB4SI
12M
Y1
1
RP2040.SWD
J1
1
Conn_ARM_JTAG_SWD_10
J2
1
Conn_ARM_JTAG_SWD_10
J3
1
TC2030
J4
1
UART
J5
4
5V
J6, J7, J8, J9
1
TYPE-C-31-D-09
USB_C_Receptacle_USB2.0
J10
8
HUB75
J11, J12, J13, J16, J18, J19, J22, J23
1
v7.0
J14
1
v8.0
J15
Show 22 more
QtyPartRefs
1
Conn_01x02
J17
1
V7.0
J20
1
V8.0
J21
1
BSMD0603-075-6V
500mA
F1
1
SMD Proto Board
N1
1
THT Proto Board
N2
2
THT Proto Board
N3, N4
1
THT Proto Board
N5
7
Pmod_02x06_Host
Pmod1, Pmod2, Pmod3, Pmod4, Pmod5, Pmod6, Pmod7
1
RUN
SW1
1
BOOT
SW2
5
LED
D1, D2, D3, D4, D5
1
UPZ1608E601-2R0TF
600Ω@100MHz
FB1
14
100n
C1, C4, C5, C6, C9, C10, C13, C15 +6
6
1u
C2, C3, C7, C8, C14, C18
2
36p
C11, C12
7
5.1k
R1, R2, R3, R4, R5, R7, R8
1
1M
R6
3
10k
R9, R11, R14
2
47k
R10, R12
2
1k
R13, R17
2
27
R15, R16

Chubby hat design files

The KiCad project lives in the cyber-murmel/chubby-hat repository on GitHub; these links point at the commit this page was built from.

Chubby hat: common questions

What microcontroller does the Chubby hat use?

The Chubby hat is built around the RP2040-Zero, from the RP2040/RP2350 family.

How big is the Chubby hat?

The Chubby hat measures 143.5 × 91.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Chubby hat?

95 components, from 42 distinct parts. The full bill of materials is listed on this page.

Where can I download the Chubby hat design files?

From the cyber-murmel/chubby-hat repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Chubby hat design in my own project?

Yes, under the terms of its MIT license, which cyber-murmel chose for the repository.

Can I test firmware for the Chubby hat 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.

More boards in chubby-hat

Similar boards