HardLabs

Chessconnect

K-0hm·Chessboard·Kicad_v_plein/chessconnect.kicad_pcb

Chessconnect PCB layout, top view — open source AVR/Arduino board by K-0hm

About the Chessconnect PCB

Chessconnect is an open source AVR/Arduino PCB design by K-0hm, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 396.3 × 336.1 mm, with 196 components from 24 distinct parts.

Its main chip is the ATmega328P-P, from the AVR/Arduino family. Other key parts include the SN74LVC125ADR, MPR121QR2, TCA9548APWR and LM1117DT-3.3. By type, the board carries 85 capacitors, 65 diodes, 32 resistors, 10 ICs, 2 connectors and 1 crystal.

It belongs with the sensors designs in this gallery.

From the project

Code for a chessboard with light and capacitance Touch Sensors.

Main components on the Chessconnect

SN74LVC125ADRMPR121QR2TCA9548APWRATmega328P-PLM1117DT-3.3

Chessconnect bill of materials (BOM)

196 components, 24 distinct parts.

QtyPartRefs
1
SN74LVC125ADR
IC1
6
MPR121QR2
U1, U3, U5, U6, U7, U8
1
TCA9548APWR
U2
1
ATmega328P-P
U4
1
LM1117DT-3.3
U9
1
Crystal
Y1
1
Screw_Terminal_01x02
J1
1
AVR-ISP-6
J3
1
SW_Push
SW8
64
WS2812B
D1, D2, D3, D4, D5, D6, D7, D8 +56
1
LedAlim
D65
64
100p
C1, C2, C3, C4, C5, C6, C7, C8 +56
2
22p
C65, C66
13
0.1uF
C67, C69, C71, C72, C73, C74, C75, C76 +5
3
0.1u
C68, C81, C82
1
4.7u
C70
1
10uF
C83
1
100uF
C84
12
4,7kΩ
R1, R4, R12, R13, R16, R17, R20, R21 +4
1
10k
R2
Show 4 more
QtyPartRefs
6
75kΩ
R5, R14, R18, R22, R26, R30
9
4,7k
R6, R7, R8, R9, R11, R15, R19, R23 +1
1
1k
R31
3
330
R32, R33, R34

Chessconnect design files

The KiCad project lives in the K-0hm/Chessboard repository on GitHub; these links point at the commit this page was built from.

Chessconnect: common questions

What microcontroller does the Chessconnect use?

The Chessconnect is built around the ATmega328P-P, from the AVR/Arduino family.

How big is the Chessconnect PCB?

The Chessconnect measures 396.3 × 336.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Chessconnect?

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

Where can I download the Chessconnect design files?

From the K-0hm/Chessboard repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Chessconnect design in my own project?

Yes, under the terms of its GPL-3.0 license, which K-0hm chose for the repository.

Can I test firmware for the Chessconnect without the hardware?

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

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