Bicolour light
About the Bicolour light PCB
Bicolour light is an open source PCB design by slonket, published on GitHub under the MIT license. It is a 2-layer board measuring 12.6 × 11 mm, with 6 components from 4 distinct parts.
By type, the board carries 2 connectors, 2 diodes and 2 resistors.
From the project
An assortment of projects to supplement the Lego 12V "Gray" era trains.
The brick contains two red/yellow bicolour LEDs which change colour with input polarity. This brick is intended for use in locomotives/rolling stock to produce a headlight/tail-light changeover with direction.
- Identical formfactor to the original 2x2 12V light brick (08010bc01). - Version with 3-hole socket. - Colour change red-yellow with input polarity. - Improved brightness over original, particularly in the lower voltage range.
Bicolour light bill of materials (BOM)
6 components, 4 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PIN_A | J_Pad_1_Lego | J1 |
| 1 | PIN_B | J_Pad_1_Lego | J2 |
| 2 | C7545694 RED-YEL | D_LED_4040 | D1, D2 |
| 2 | 510 | R_1206 | R1, R2 |
Bicolour light design files
The KiCad project lives in the slonket/lego-12v repository on GitHub; these links point at the commit this page was built from.
Bicolour light: common questions
How big is the Bicolour light PCB?
The Bicolour light measures 12.6 × 11 mm, has 2 copper layers and is 1 mm thick.
How many components are on the Bicolour light?
6 components, from 4 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 Bicolour light design files?
From the slonket/lego-12v repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Bicolour light design in my own project?
Yes, under the terms of its MIT license, which slonket chose for the repository.
