2 layers159.5 × 30 mm
Type f
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
25 parts3kApache-2.0
2 layers120 × 55 mm
RainLight
AlejoMSP/RainLightAutomotive rain light — 10-LED vertical array, KiCad project.
- Size
- 120 × 55 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 12
- Pads
- 46
- Tracks, vias
- 79, 0
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 7 Sep 2026
- Updated
- 12 Sep 2026
Overview
RainLight is an open-source printed circuit board by AlejoMSP, from the AlejoMSP/RainLight repository on GitHub. It is a 2-layer board of 120 × 55 mm with 25 parts on 12 nets, routed with 79 tracks and 0 vias.
Its parts include 10 resistors, 10 diodes and 1 connector.
README
README.mdRainLight
Automotive rain light — 10-LED vertical array, KiCad project.
Overview
10 red LEDs (D1–D10) in a vertical strip, each with its own current-limiting resistor (R1–R10, 510Ω), powered from a 12V automotive source via a DTM04-2P 2-pin wire-pigtail connector (J1). Sized for a Chanzon 10mm red LED (Vf ≈ 2.0V @ 20mA) running off battery/alternator voltage.
Status
- Schematic: Rev 1.2, complete. See comments in the title block for revision history (LED polarity fix, per-LED resistor conversion, connector addition).
- PCB: in progress — footprint placement and routing underway.
Key specs
| Item | Value |
|---|---|
| LEDs | D1–D10, red, THT 10mm (LED_THT:LED_D10.0mm) — Chanzon 10mm red, Vf ≈ 2.0V @ 20mA |
| Resistors | R1–R10, 510Ω, THT axial (Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal) |
| Row spacing | ~16.4mm |
| Power input | J1, DTM04-2P wire pigtail, 2 pads (Connector_Wire:SolderWire-0.75sqmm_1x02_P4.8mm_D1.25mm_OD2.3mm) |
| Supply | 12V automotive |
| Per-LED current | ~19.6mA @ 12V nominal (R = (12V − 2V) / 20mA ≈ 500Ω, rounded to 510Ω) |
Files
RainLight.kicad_pro— project fileRainLight.kicad_sch— schematicRainLight.kicad_pcb— PCB layout
RainLight.kicad_prl (local project settings) is gitignored — it's per-machine
session state, not meaningful to version.
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 510 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 |
| 10 | LED | LED_THT:LED_D10.0mm | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 |
| 4 | MountingHole_3.2mm_M3 | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 1 | DTM04-2P (wire pigtail) | Connector_Wire:SolderWire-0.75sqmm_1x02_P4.8mm_D1.25mm_OD2.3mm | J1 |
Questions
How big is the RainLight PCB?
It measures 120 × 55 mm and has 2 copper layers, 1.6 mm thick.
What parts does the RainLight use?
25 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 RainLight KiCad files?
From the AlejoMSP/RainLight repository on GitHub, at the commit this page was made from: the board is RainLight.kicad_pcb and its schematic RainLight.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the RainLight design in my own project?
Its repository states no licence, so its author keeps all rights: ask AlejoMSP before reusing the design.
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