HardLabs

Hardware

DC423·Hardware·DC423-2018-Tracer/DC423-Tracer-V1.kicad_pcb

Hardware PCB layout, top view — open source AVR/Arduino board by DC423

About the Hardware PCB

Hardware is an open source AVR/Arduino PCB design by DC423, published on GitHub. It is a 2-layer board measuring 58.4 × 118.1 mm, with 34 components from 5 distinct parts.

Its main chip is the ATTINY841-SSU, from the AVR/Arduino family. By type, the board carries 25 diodes, 6 resistors, 1 IC, 1 connector and 1 battery holder.

From the project

The initial design used a different CR2032 holder but that was too much of a pain to remove the battery since there is no switch to turn the badge on and off.

Hardware, from the project README
From the project README

Main components on the Hardware

ATTINY841-SSU

Hardware bill of materials (BOM)

34 components, 5 distinct parts.

QtyPartRefs
1
ATTINY841-SSU
U1
1
ISP Conn
J1
1
CR2032
BT1
25
LED
D1, D2, D3, D4, D5, D6, D7, D8 +17
6
100
R1, R2, R3, R4, R5, R6

Hardware design files

The KiCad project lives in the DC423/Hardware repository on GitHub; these links point at the commit this page was built from.

Hardware: common questions

What microcontroller does the Hardware use?

The Hardware is built around the ATTINY841-SSU, from the AVR/Arduino family.

How big is the Hardware PCB?

The Hardware measures 58.4 × 118.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Hardware?

34 components, from 5 distinct parts. The full bill of materials is listed on this page.

Where can I download the Hardware design files?

From the DC423/Hardware repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Hardware design in my own project?

The repository has no license, so all rights stay with DC423. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Hardware 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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