HardLabs

Darkstar Mk.II

kajusK·Darkstar-Mk.II·pcb/headlamp/headlamp.kicad_pcb

Darkstar Mk.II PCB layout, top view — open source AVR/Arduino board by kajusK
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About the Darkstar Mk.II PCB

Darkstar Mk.II is an open source AVR/Arduino PCB design by kajusK, published on GitHub under the CERN-OHL-1.2 license. It is a 2-layer board measuring 34 × 34 mm, with 56 components from 29 distinct parts.

Its main chip is the ATTINY841-SSU, from the AVR/Arduino family. Other key parts include the ZXGD3001E6, TSV912 and MCP6567. By type, the board carries 26 resistors, 9 capacitors, 6 diodes, 5 ICs, 4 transistors and 2 connectors.

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

From the project

High-power bomb-proof headlamp for caving

Small lightweight, water/mud/shock/bomb proof headlamp with bat roasting light output and Scurion like body for 1/8 of the price. If you are caver, mine explorer, biker, etc. with hacker soul, this is a way to go!

Features -------- Two high power high efficiency XP-L2 LEDs and two low power (e.g. red + UV). Up to 869 ANSI lumens (with 80 CRI 4000 K LEDs). Anodized aluminium alloy body. 3D printed battery box. Waterproof up to 2 (tested) meters (IPx8). 2 meter drop resistance tested Works in wide temperature range - minus 20 °C to plus 60 °C Custom high efficiency LED drivers - up to 96 %. Up…

Darkstar Mk.II, from the project README
From the project README

Main components on the Darkstar Mk.II

ATTINY841-SSUZXGD3001E6TSV912MCP6567

Darkstar Mk.II bill of materials (BOM)

56 components, 29 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATTINY841-SSU
IC1
2
ZXGD3001E6
U1, U2
1
TSV912
U3
1
MCP6567
U4
1
VEMT3700-GS08
Q1
1
NX2301P
Q2
2
DMP2035U
Q3, Q4
1
POWER
P1
1
ISP
P3
1
BT2
SW1
1
BT1
SW2
1
RED
D2
1
WHITE
D3
2
BAT60AE6327HTSA1
D4, D5
2
LED
D6, D7
2
10U
10u
L1, L2
1
10U
10u
C1
5
1u
C2, C4, C6, C7, C8
3
10N
10n
C5, C9, C10
2
8K2
8k2
R1, R7
Show 9 more
QtyPartRefs
7
10K
10k
R2, R3, R6, R8, R9, R12, R13
3
220R
220
R4, R10, R11
1
10K
100k
R5
2
0R056
R14, R15
4
1k
R16, R17, R24, R25
2
18K
18k
R18, R19
2
12K
12k
R20, R21
2
270K
270k
R22, R23
1
33R
33
R26

Darkstar Mk.II design files

The KiCad project lives in the kajusK/Darkstar-Mk.II repository on GitHub; these links point at the commit this page was built from.

Darkstar Mk.II: common questions

What microcontroller does the Darkstar Mk.II use?

The Darkstar Mk.II is built around the ATTINY841-SSU, from the AVR/Arduino family.

How big is the Darkstar Mk.II PCB?

The Darkstar Mk.II measures 34 × 34 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Darkstar Mk.II?

56 components, from 29 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Darkstar Mk.II design files?

From the kajusK/Darkstar-Mk.II repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Darkstar Mk.II design in my own project?

Yes, under the terms of its CERN-OHL-1.2 license, which kajusK chose for the repository.

Can I test firmware for the Darkstar Mk.II 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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