HardLabs

Chase badge

krk·chase-badge·hardware/chase.kicad_pcb

Chase badge PCB layout, top view — open source AVR/Arduino board by krk

About the Chase badge PCB

Chase badge is an open source AVR/Arduino PCB design by krk, published on GitHub. It is a 2-layer board measuring 52 × 52 mm, with 169 components from 25 distinct parts.

Its main chip is the ATtiny85V, from the AVR/Arduino family. Other key parts include the TPS63000, MCP73837-FCI_UN and TLC6C5912GQPWRQ1. By type, the board carries 72 resistors, 66 diodes, 14 capacitors, 8 ICs, 3 transistors and 1 crystal.

It belongs with the power & battery and wearables designs in this gallery.

From the project

60 LED 3.3V chaser with ATtiny85, USB-C and LiPo

I tried to follow datasheet recommendations and tried to base the design on application note schematics and PCB layouts of the active components.

First revision of the board in the repo is rev-8. Earlier revisions are not available in this repo.

Schematics contain notes and all components should have their datasheet in their details in KiCAD.

- to @smcatala for reviewing the designs!

Chase badge, from the project README
From the project README

Main components on the Chase badge

ATtiny85VTPS63000MCP73837-FCI_UNTLC6C5912GQPWRQ1

Chase badge bill of materials (BOM)

169 components, 25 distinct parts.

QtyPartRefs
1
ATtiny85V
U1
1
TPS63000
U2
1
MCP73837-FCI_UN
U3
5
TLC6C5912GQPWRQ1
U4, U5, U6, U7, U8
1
DMC3400SDW-7
Q1
2
DMN61D9UDW
Q2, Q3
1
USB3.1_TYPEC
X1
1
FH12-6S-0.5SH(55)
J1
1
Battery_Cell
BT1
1
10K
RT2
1
TS-1187A-B-A-B
SW1
1
D
D1
63
LED
D2, D3, D4, D5, D6, D7, D8, D9 +55
2
3V6
D65, D66
1
2.2uH
L1
8
100n
C1, C5, C8, C9, C10, C11, C12, C13
3
10uF
C2, C3, C14
3
47uF
C4, C6, C7
1
100
R1
64
430
R2, R5, R6, R7, R8, R9, R10, R11 +56
Show 5 more
QtyPartRefs
1
1K
R3
1
100K
R4
2
5.1K
R65, R66
1
1K5
R67
2
75.1
R68, R69

Chase badge design files

The KiCad project lives in the krk/chase-badge repository on GitHub; these links point at the commit this page was built from.

Chase badge: common questions

What microcontroller does the Chase badge use?

The Chase badge is built around the ATtiny85V, from the AVR/Arduino family.

How big is the Chase badge PCB?

The Chase badge measures 52 × 52 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Chase badge?

169 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the Chase badge design files?

From the krk/chase-badge repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Chase badge design in my own project?

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

Can I test firmware for the Chase badge 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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