HardLabs

Io board

ReflexCreations·io-board

Io board layout, top view — open source STM32 board by ReflexCreations

About the Io board

Io board is an open source STM32 PCB design by ReflexCreations, published on GitHub under the MIT license. It is a 4-layer board measuring 270 × 34 mm, with 95 components from 24 distinct parts.

Its main chip is the STM32F303CCTx, from the STM32 family. Other key parts include the SP3485EN and AMS1117-3.3. By type, the board carries 48 resistors, 18 capacitors, 12 connectors, 10 ICs, 4 diodes and 2 switches.

From the project

This repository contains source documents and manufacturing files for the RE:Flex Dance Pad's I/O Board. It was created using KiCAD 5.1.4.

This repository contains source documents and manufacturing files for the RE:Flex Dance Pad's I/O Board. It was created using KiCAD 5.1.4.

The I/O Boards purpose is to provide an interface between a computer (using USB 2.0) and 4 'panel boards' (using RJ45) to: - Receive panel board pressure sensor data, organize the data and send it to computer programs - Receive LED data from computer programs, organize and send it to panel boards to display on RGB LED array

Main components on the Io board

SP3485ENAMS1117-3.3STM32F303CCTx

Io board bill of materials (BOM)

95 components, 24 distinct parts.

QtyPartRefs
8
SP3485EN
U1, U2, U3, U4, U5, U6, U7, U8
1
AMS1117-3.3
U13
1
STM32F303CCTx
U14
1
8MHz
Y1
4
RJ45
J1, J2, J3, J4
1
USB_B
J5
1
Conn_02x05_Odd_Even
J6
5
Barrel_Jack_MountingPin
J7, J8, J9, J10, J11
1
Conn_02x04_Odd_Even
J12
2
SW_Push
SW1, SW2
1
D_Schottky
D1
3
LED
D2, D3, D4
13
0.1u
C1, C2, C3, C4, C5, C6, C7, C8 +5
1
22u
C9
1
10u
C14
2
22p
C15, C16
1
1u
C22
17
10k
R1, R2, R3, R4, R17, R18, R19, R20 +9
16
360R
R5, R7, R8, R10, R11, R13, R14, R16 +8
8
100R
R6, R9, R12, R15, R25, R28, R31, R34
Show 4 more
QtyPartRefs
1
1.5k
R21
2
22R
R22, R23
3
270R
R53, R54, R55
1
220R
R56

Io board design files

The KiCad project lives in the ReflexCreations/io-board repository on GitHub; these links point at the commit this page was built from.

Io board: common questions

What microcontroller does the Io board use?

The Io board is built around the STM32F303CCTx, from the STM32 family.

How big is the Io board?

The Io board measures 270 × 34 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Io board?

95 components, from 24 distinct parts. The full bill of materials is listed on this page.

Where can I download the Io board design files?

From the ReflexCreations/io-board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Io board design in my own project?

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

Can I test firmware for the Io board 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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