Overview
The resistance of photoresistor decreases when the intensity of light increases. A dual OpAmp chip LM358 on board produces voltage corresponding to intensity of light(i.e. based on resistance value). The output signal is an analog value, the brighter the light is, the larger the value.
This module can be used to build a light controlled switch i.e. switch off lights during day time and switch on lights during night time.
Warning!: The light sensor value only reflects an approximated trend of light intensity, it DOES NOT represent the exact Lumen count.
Features
- Analog value output
- High reliability and sensibility
- Small footprint
- Recognizes a wide spectrum
Tech specs
|
Item |
Value |
|
Operating voltage |
3~5V |
|
Operating current |
0.5~3 mA |
|
Response time |
20-30 milliseconds |
|
Peak Wavelength |
540 nm |
|
Weight |
4 g |
Conformities
Get Inspired
This project detects water leak and records the temperature and humidity reading at the time of leak and sends it to the Adafruit cloud.
By popular demand, we are pleased to announce that it’s now possible to buy the Arduino MKR IoT Carrier. Originally forming a key part of the Arduino Oplá IoT Kit, we’ve responded to our community to make the carrier available on its own, thus enabling you to benefit from having a bunch of sensors, actuators, and a display all featured on the one board — making it quicker and easier to take your IoT projects to the next level. Featuring a large set of built-in sensors and actuators as well as a useful color display, the carrier lets you focus on prototyping your IoT ideas right away by saving on the hassle of wiring and soldering these components. The carrier can become a WiFi, LoRa, NB-IoT or GSM-compatible device by seamlessly connecting to any MKR family board. Building a user interface for these boards is easy with the embedded color OLED screen, five capacitive touch buttons, and the five RGB LEDs. The integrated sensors (temperature, humidity, pressure, RGBC light, gesture and proximity) allow you to map the environment around the carrier, and should you need to capture any other data there are over 100 additional Grove sensors that can easily be connected directly to the carrier. Here’s are quick demo of the carrier's capabilities! (Special shout out to Mirko Pacioni and Filo Connesso for creating this demo.) Capture and store all the data locally on an SD card, or connect your MKR family board to the IoT Cloud for real-time data captured, storage, and visualization. The MKR IoT Carrier features: Round OLED displayFive RGB LEDsFive capacitive touch buttonsOn-board sensors (temperature, humidity, pressure, RGBC light, gesture and proximity)BuzzerIMU (Three-axis accelerometer sensor and three-axis gyroscope sensor)Two 24V relaysMicroSD card holder (SD card not included)Plug-and-play Grove connectors for external sensors — two analog and one digital (I2C)18650 Li-ion rechargeable battery holder (battery not
