2 layers100 × 35 mm
2 layers89.2 × 30.3 mm
TRIPLE DUO
jaka/electronicsschematics and PCBs
- Size
- 89.2 × 30.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 28
- Pads
- 82
- Tracks, vias
- 144, 0
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 9 Jun 2026
- Updated
- 27 Sep 2026
Overview
TRIPLE DUO is an open-source printed circuit board by jaka, from the jaka/electronics repository on GitHub. It is a 2-layer board of 89.2 × 30.3 mm with 37 parts on 28 nets, routed with 144 tracks and 0 vias.
Its parts include 18 diodes, 10 resistors, 2 capacitors, 2 ICs and 1 connector.
README
Flashing Lights Triple Duo/README.mdFlashing Lights Triple Duo
This circuit consists of two 555 timers configured at different frequencies. These frequencies are selected so that red LED’s and blue LED’s alternatively flashes. Moreover each group (red or blue) flashes aproximately three times before colour is switched, similar to american police strobe lights.
- EDA: Kicad 7.0.11
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | LED | KIT:LED_D5.0mm | D11, D12, D13, D14, D15, D16, D17, D18, D19, D21, D22, D23, D24, D25, D26, D27 +2 |
| 3 | 120 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8, R9, R10 |
| 3 | 270 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5, R6, R7 |
| 2 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R3 |
| 2 | LM555xN | Package_DIP:DIP-8_W7.62mm | U1, U2 |
| 1 | 100k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 10uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C1 |
| 1 | 1uF | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C2 |
| 1 | 330k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4 |
| 1 | POWER | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
The 33 most common of 37 parts.
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Questions
How big is the TRIPLE DUO PCB?
It measures 89.2 × 30.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the TRIPLE DUO use?
37 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the TRIPLE DUO KiCad files?
From the jaka/electronics repository on GitHub, at the commit this page was made from: the board is Flashing Lights Triple Duo/TRIPLE_DUO.kicad_pcb and its schematic Amplifier TDA2030/TDA2030.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the TRIPLE DUO design in my own project?
Its repository states no licence, so its author keeps all rights: ask jaka before reusing the design.