HardLabs

Cantaloupe

Kaleidogeist·Cantaloupe·PCB/Cantaloupe.kicad_pcb

Cantaloupe PCB layout, top view — open source STM32 board by Kaleidogeist

About the Cantaloupe PCB

Cantaloupe is an open source STM32 PCB design by Kaleidogeist, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 143.9 × 118.7 mm, with 121 components from 41 distinct parts.

Its main chip is the STM32F4x1CxUx, from the STM32 family. Other key parts include the SRV0504, XC6206P332MR, LMV321 and Art. By type, the board carries 33 diodes, 32 switches, 18 resistors, 15 capacitors, 6 jumpers and 5 ICs.

It belongs with the keyboards and displays & leds designs in this gallery.

From the project

~60% QMK-compatible Split Ergonomic Keyboard

Cantaloupe, from the project README
From the project README

Main components on the Cantaloupe

STM32F4x1CxUxSRV0504XC6206P332MRLMV321Art

Cantaloupe bill of materials (BOM)

121 components, 41 distinct parts.

QtyPartRefs
1
STM32F4x1CxUx
U1
2
SRV0504
U2, U3
1
XC6206P332MR
U4
1
LMV321
U5
1
Art
A1
1
2N7002
Q1
1
AO3401A
Q2
1
8MHz
Y1
1
USB_In
J1
1
OLED
J2
1
Link
J3
1
Debug
J4
1
Trackball
J5
1
500mA
F1
1
1A
F2
1
Side_R
JP1
1
Side_L
JP2
1
Link-_R
JP3
1
Link+_R
JP4
1
Link-_L
JP5
Show 21 more
QtyPartRefs
1
Link+_L
JP6
30
MX
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +22
1
Encoder
SW31
1
MX
SW32
32
D
D1, D2, D3, D4, D5, D6, D7, D8 +24
1
Power
D32
1
10u
L1
8
100n
C1, C3, C4, C8, C9, C11, C13, C14
4
10u
C2, C5, C6, C7
2
20p
C10, C12
1
4.7u
C15
7
10k
R1, R7, R8, R10, R12, R16, R18
1
330k
R2
1
1k
R3
2
100k
R4, R13
2
5k1
R5, R6
1
100
R9
1
1M
R11
1
200k
R14
1
2k2
R15
1
220
R17

Cantaloupe design files

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

Cantaloupe: common questions

What microcontroller does the Cantaloupe use?

The Cantaloupe is built around the STM32F4x1CxUx, from the STM32 family.

How big is the Cantaloupe PCB?

The Cantaloupe measures 143.9 × 118.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Cantaloupe?

121 components, from 41 distinct parts. The full bill of materials is listed on this page.

Where can I download the Cantaloupe design files?

From the Kaleidogeist/Cantaloupe repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Cantaloupe design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which Kaleidogeist chose for the repository.

Can I test firmware for the Cantaloupe without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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