HardLabs

DonConIOmini

ravinrabbid·DonCon2040·pcb/DonConIOmini/DonConIOmini.kicad_pcb

DonConIOmini PCB layout, top view — open source RP2040/RP2350 board by ravinrabbid

About the DonConIOmini PCB

DonConIOmini is an open source RP2040/RP2350 PCB design by ravinrabbid, published on GitHub under the MIT license. It is a 2-layer board measuring 54 × 64 mm, with 89 components from 29 distinct parts.

Its main chip is the RP2040-Zero, from the RP2040/RP2350 family. Other key parts include the TL074, MCP3204, MCP1541-TT and TXB0104D. By type, the board carries 33 resistors, 24 diodes, 20 capacitors, 6 ICs and 5 connectors.

It belongs with the audio designs in this gallery.

From the project

RP2040 based firmware and hardware for DIY Taiko no Tatsujin Drum Controllers

This board hosts a Waveshare RP2040-Zero or RP2350-Zero microcontroller unit and provides signal conditioning for the piezo drum triggers. The conditioning circuit is reverse engineered from the V260 SIF PCB found in the original arcades. In contrast to the original DonConIO this board uses mainly SMD parts... less authentic but way better noise characteristics.

DonConIOmini, from the project README
From the project README

Main components on the DonConIOmini

TL074RP2040-ZeroMCP3204MCP1541-TTTXB0104D

DonConIOmini bill of materials (BOM)

89 components, 29 distinct parts.

QtyPartRefs
2
TL074
U1, U2
1
RP2040-Zero
U3
1
MCP3204
U5
1
MCP1541-TT
U6
1
TXB0104D
U7
1
Ka Left
J1
1
Don Left
J2
1
Don Right
J3
1
Ka Right
J4
1
Pad
J5
1
CRV1D0512SC
PS1
12
1N4148
D1, D2, D5, D7, D8, D11, D13, D14 +4
8
BAT43
D3, D4, D9, D10, D15, D16, D21, D22
4
4.3V
D6, D12, D18, D24
4
1nF
C1, C3, C5, C7
4
0.47uF
C2, C4, C6, C8
4
100nF
C9, C10, C13, C14
1
4.7uF
C17
2
1uF
C18, C19
4
0.1uF
C20, C22, C24, C25
Show 9 more
QtyPartRefs
1
10uF
C21
4
1M
R1, R10, R19, R28
4
4.7k
R2, R11, R20, R29
4
100k
R3, R12, R21, R30
4
100
R4, R13, R22, R31
4
5.1k
R6, R15, R24, R33
5
10k
R7, R16, R25, R34, R37
4
1k
R8, R17, R26, R35
4
300
R9, R18, R27, R36

DonConIOmini design files

The KiCad project lives in the ravinrabbid/DonCon2040 repository on GitHub; these links point at the commit this page was built from.

DonConIOmini: common questions

What microcontroller does the DonConIOmini use?

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

How big is the DonConIOmini PCB?

The DonConIOmini measures 54 × 64 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the DonConIOmini?

89 components, from 29 distinct parts. The full bill of materials is listed on this page.

Where can I download the DonConIOmini design files?

From the ravinrabbid/DonCon2040 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the DonConIOmini design in my own project?

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

Can I test firmware for the DonConIOmini 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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