LDR Light Sensor (5 mm)
SensorPhotoresistor whose resistance drops as more light falls on it. Built into a voltage divider with a resistor, it lets the Arduino read the light level on an analog pin.
Specifications
- Type
- GL5528 (typical)
- Resistance in light (10 lux)
- 10 - 20 kΩ
- Resistance in the dark
- ≥ 1 MΩ
- Maximum voltage
- 150V DC
- Maximum power
- 100 mW
- Peak sensitivity
- 540 nm
- Response time
- 20 ms (rise), 30 ms (fall)
- Diameter
- 5 mm
- Use
- Voltage divider with a 10 kΩ resistor
Shop prices
- Elektrovadi2.40 ₺
- Robo902.68 ₺
- Komponentci2.74 ₺
- Motorobit3.54 ₺
- Direnc.net4.54 ₺
- Hatfon4.59 ₺
- Robotistan4.68 ₺
- Robotsepeti5.49 ₺
- Robocombo5.50 ₺
- HobiDevre5.76 ₺
- SAMM Market5.95 ₺
- Robolink Market6.00 ₺
- Modül Elektronik14.91 ₺
- RobitshopPrice at the shop
- F1 Depo3.00 ₺
- Robotzade3.60 ₺
Projects with this part
Night Light (LDR)Beginner20 minA night light that turns itself on as the room gets dark. An LDR (light sensor) and a 100 kΩ resistor form a voltage divider; the Arduino reads the light level on pin A0 and, in the dark, dims the LED on pin 9 with PWM. It teaches analog reading, thresholds and PWM. No extra library needed.Open project 
Arduino-Free Dark-Activated LampBeginner25 minA night light with no Arduino and no code, built from just a 9V battery, a BC547 transistor, an LDR and a potentiometer: when it gets dark the LED lights by itself, and it goes out when the light comes back. With the potentiometer you set how dark it must be. It teaches three cornerstones of basic electronics: the voltage divider (the potentiometer and the LDR), the transistor as a switch that turns a large current on and off with a small base current, and limiting an LED's current with a resistor. You see how these parts, used in Arduino projects all the time, work without one.Open project
In the app, tick off every wire, match the parts to your inventory and pick up where you left off.
Build it step by step in the app