HardLabs

CoCo FujiNet

strickyak·copico-bonobo·v3.1-centipede/hat-fuji-40c/hat-fuji-40c.kicad_pcb

CoCo FujiNet PCB layout, top view — open source ESP32 board by strickyak

About the CoCo FujiNet PCB

CoCo FujiNet is an open source ESP32 PCB design by strickyak, published on GitHub under the MIT license. It is a 2-layer board measuring 87.4 × 55.4 mm, with 27 components from 13 distinct parts.

Its main chip is the ESP32-DevKitC-VE, from the ESP32 family. By type, the board carries 15 resistors, 4 capacitors, 3 diodes, 2 connectors, 2 switches and 1 IC.

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

From the project

KICAD: Simple and cheap PI PICO cartridge for Coco; can spoonfeed to boot, and has Control & Data ports decoded.

The Centipede is an experimental Coco Cartridge that uses a RP2350B microcontroller connected directly to the Coco Cartridge Expansion bus.

My experimental device uses this RP2350B board, but any board that exposes nearly all 48 GPIOs should work:

https://github.com/jvanderberg/RP2350B-Dev-Board

These are the current GPIO pin assigments:

Main components on the CoCo FujiNet

ESP32-DevKitC-VE

CoCo FujiNet bill of materials (BOM)

27 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-DevKitC-VE
U2
1
C42372532
Conn_02x10_Odd_Even
J1
1
C111196
ST-TF-003A
P2
2
K2-1808SN-A4SW-01
韩国韩荣
SW2, SW3
1
C110493
50A PowerDI-123 Schottky Diode
D1
1
C2290
WIFI_WHITE
D2
1
C2286
BUS_ORANGE
D3
1
100NF
100nF
C1
1
C15008
100uF 10V
C2
1
C16780
47uF 10v
C3
1
10UF
10uF
C4
5
C21190
1K
R1, R2, R3, R4, R5
10
C25804
R_Small
R6, R7, R8, R9, R10, R11, R12, R13 +2

CoCo FujiNet design files

The KiCad project lives in the strickyak/copico-bonobo repository on GitHub; these links point at the commit this page was built from.

CoCo FujiNet: common questions

What microcontroller does the CoCo FujiNet use?

The CoCo FujiNet is built around the ESP32-DevKitC-VE, from the ESP32 family.

How big is the CoCo FujiNet PCB?

The CoCo FujiNet measures 87.4 × 55.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CoCo FujiNet?

27 components, from 13 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 CoCo FujiNet design files?

From the strickyak/copico-bonobo 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 CoCo FujiNet design in my own project?

Yes, under the terms of its MIT license, which strickyak chose for the repository.

Can I test firmware for the CoCo FujiNet without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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