2 layers101.6 × 53.3 mm
2 layers34.5 × 41 mm
LED Light Sensor
adhidass/LED-Light-Sensor-PCBPowered by 3.3 V through a 3-pin header (3.3 V, Vout, GND).
- Size
- 34.5 × 41 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 12
- Nets
- 7
- Pads
- 28
- Tracks, vias
- 49, 2
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 7 Aug 2026
- Updated
- 5 Oct 2026
Overview
LED Light Sensor is an open-source printed circuit board by adhidass, from the adhidass/LED-Light-Sensor-PCB repository on GitHub. It is a 2-layer board of 34.5 × 41 mm with 12 parts on 7 nets, routed with 49 tracks and 2 vias.
It is built around the LMC6482IN. Its parts include 3 resistors, 2 capacitors, 1 IC, 1 diode and 1 connector. It belongs with the sensors and measurement boards of this library.
Main components
1README
README.mdFirst KiCad Project
Light sensor that has adjustable threshold using potentiometer, uses LED as the photodiode and LMC6482 op-amp
How it works
- Sensor: Light makes the photodiode leak a tiny current.
- Amplifier (U1A): turns that current into a voltage, centered on a 1.65 V reference.
- Comparator (U1B): compares the sensor voltage against the potentiometer's level. The output goes high or low depending on which is larger.
Powered by 3.3 V through a 3-pin header (3.3 V, Vout, GND).
Status
Designed in KiCad, DRC clean. Not yet fabricated or tested.
Files
Hardware/: KiCad project filesDocs/: schematic PDF and board imageLED Light Sensor.zip: Gerber and drill files for manufacturing
Credit:
A step by step tutorial by @inkedbhav on tiktok. Assisted by Claude AI (Sonnet 5.5)
Parts
12| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 2 | MountingHole_2.2mm_M2_DIN965_Pad | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad | , |
| 1 | 100nF | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 1nF | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 5.1M | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J1 |
| 1 | LED | LED_THT:LED_D5.0mm | D1 |
| 1 | LMC6482 | Package_DIP:DIP-8_W7.62mm | U1 |
| 1 | LOGO | Signatures:signature | |
| 1 | R_Potentiometer | Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical | RV1 |
Questions
How big is the LED Light Sensor PCB?
It measures 34.5 × 41 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LED Light Sensor use?
12 parts, built around the LMC6482IN. 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 LED Light Sensor KiCad files?
From the adhidass/LED-Light-Sensor-PCB repository on GitHub, at the commit this page was made from: the board is Hardware/LED Light Sensor.kicad_pcb and its schematic Hardware/LED Light Sensor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LED Light Sensor design in my own project?
Its repository states no licence, so its author keeps all rights: ask adhidass before reusing the design.
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