DarkStar
About the DarkStar PCB
DarkStar is an open source PCB design by kajusK, published on GitHub under the BSD-3-Clause license. It is a 2-layer board measuring 31.2 × 31.2 mm, with 37 components from 22 distinct parts.
Other key parts include the PIC16(L)F616-I/ST. By type, the board carries 17 resistors, 6 diodes, 6 capacitors, 2 transistors, 2 switches and 2 inductors.
From the project
Small, lightweight and waterproof headlamp with two Cree XP-G2 leds.
There's a whole new version with mutch more features and power: https://github.com/kajusK/Darkstar-Mk.II/
Small, lightweight and waterproof LED headlamp with two Cree XP-G2 leds. Can be used in biking, caving, mine exploration, hiking... But always carry a backup light source.
Features -------- Waterproof aluminium lamp body Lightweight - whole headlamp, including two 18650 batteries, weights 220 grams Two 5W Cree XP-G2 LEDs with independently controlled brightness Always on LED with wide (115 degrees) beam to illuminate surroundings One narrow beam (10 degrees) LED to illuminate long…
Main components on the DarkStar
DarkStar bill of materials (BOM)
37 components, 22 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PIC16(L)F616-I/ST | TSSOP-14_4.4x5mm_Pitch0.65mm | U1 |
| 2 | DMP2305U | SOT-23_Handsoldering | Q1, Q2 |
| 1 | ICSP | SOT-143 | P2 |
| 1 | UP | SW_SPST_FSMSM | SW1 |
| 1 | DOWN | SW_SPST_FSMSM | SW2 |
| 2 | BAT60A | SOD-323 | D1, D4 |
| 1 | LED1 | LED-XP-G_CREE | D2 |
| 1 | LED2 | LED-XP-G_CREE | D5 |
| 1 | LL103 | Diode-MiniMELF_Standard | D6 |
| 1 | LED | LED-0805 | D7 |
| 2 | 22uH | Choke_SMD_Wuerth-WE-PD2-Typ-MS | L1, L2 |
| 1 | 470n | C_0805 | C1 |
| 3 | 1u | C_0805 | C2, C4, C8 |
| 2 | 1n | C_0805 | C5, C6 |
| 2 | 82R | R_0805 | R1, R12 |
| 4 | 10k | R_0805 | R2, R10, R11, R14 |
| 2 | 180k | R_0805 | R3, R6 |
| 2 | 5k6 | R_0805 | R4, R7 |
| 2 | 0,1R | R_1206 | R5, R17 |
| 2 | 2k2 | R_0805 | R8, R18 |
Show 2 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 10k | R_1206 | R13, R15 |
| 1 | 470R | R_0805 | R19 |
DarkStar design files
The KiCad project lives in the kajusK/DarkStar repository on GitHub; these links point at the commit this page was built from.
- Layoutpcb/led_driver.kicad_pcb
- BOMpcb/BOM.csv
DarkStar: common questions
How big is the DarkStar PCB?
The DarkStar measures 31.2 × 31.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the DarkStar?
37 components, from 22 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 design files?
From the kajusK/DarkStar 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 design in my own project?
Yes, under the terms of its BSD-3-Clause license, which kajusK chose for the repository.