2 layers70 × 80 mm
2 layers28.5 × 43.5 mm
Car light switch schematic
Emmes1026/DRL-controllerKiCad schematic for a custom PCB that automatically turns on daytime running lights when the car starts.
- Size
- 28.5 × 43.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 11
- Pads
- 28
- Tracks, vias
- 82, 6
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 8 Apr 2026
- Updated
- 8 Apr 2026
Overview
Car light switch schematic is an open-source printed circuit board by Emmes1026, from the Emmes1026/DRL-controller repository on GitHub. It is a 2-layer board of 28.5 × 43.5 mm with 11 parts on 11 nets, routed with 82 tracks and 6 vias.
It is built around the 2SD1047 and BC547. Its parts include 3 resistors, 3 diodes, 2 transistors, 1 capacitor and 1 switch.
Main components
2README
README.mdDRL-controller
KiCad schematic for a custom PCB that automatically turns on daytime running lights when the car starts.
Project Overview
This repository contains the KiCad schematic and PCB layout for a custom Automatic Daytime Running Lights (DRL) controller. It is a personal DIY project designed to automatically turn on the car's DRLs when the vehicle is turned on, without the need for manual switching.
How It Works
The circuit is designed to detect when the car is running and activate the lights accordingly.
Schematic Notes
Please note that the schematic image contains labels in Polish.
- s_d - DRL.
- kontrolka s_d - DRL indicator.
- swiatla_post - parking light.
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 1N4004 | Resistor_THT:Resistor_1K_moj | D2, D3 |
| 1 | 10K | Resistor_THT:RV1 | RV1 |
| 1 | 1K | Resistor_THT:Resistor_1K_moj | R1 |
| 1 | 2,2 uF 50V | Resistor_THT:Resistor_1K_moj | C1 |
| 1 | 2SD1047 | Package_TO_SOT_THT:TO-3PB-3_Vertical | Q1 |
| 1 | 470 | Resistor_THT:Resistor_1K_moj | R3 |
| 1 | 5.6K | Resistor_THT:Resistor_1K_moj | R2 |
| 1 | BC547 | Package_TO_SOT_THT:TO-92_Inline | Q2 |
| 1 | C13V | Resistor_THT:Resistor_1K_moj | D1 |
| 1 | SANYOU_SRD_Form_C | Relay_THT:Relay_moj_schemat | K2 |
Questions
How big is the Car light switch schematic PCB?
It measures 28.5 × 43.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Car light switch schematic use?
11 parts, built around the 2SD1047 and BC547. 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 Car light switch schematic KiCad files?
From the Emmes1026/DRL-controller repository on GitHub, at the commit this page was made from: the board is car_light_switch_schematic.kicad_pcb and its schematic car_light_switch_schematic.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Car light switch schematic design in my own project?
Its repository states no licence, so its author keeps all rights: ask Emmes1026 before reusing the design.
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