Light

The Simple Light Sensor Board is a versatile solution for adding light detection to your electronics projects. It’s a complete module that provides both analog and digital outputs, giving you the flexibility to create a wide range of applications. Whether you’re building an automatic lighting system, a plant-monitoring device, or a smart home alarm, this sensor board provides the reliable light detection that every maker needs.

The onboard LM393 comparator and adjustable potentiometer make this board perfect for creating precise light-activated triggers. You can easily set a specific light threshold for the digital output, allowing you to trigger an action when the light level crosses a certain point. This is ideal for beginners who want a simple on/off signal, as well as for advanced users who need to fine-tune the sensor’s sensitivity for their specific application. Perfect for students learning about sensors, hobbyists building interactive projects, or engineers prototyping new devices.

What makes this light sensor board special is its all-in-one design, combining a LDR with all the necessary circuitry on a compact module. This sensor will not give you detailed lux readings, just a simple analog value proportional to the amount of light. As with all our products, it’s open-source, with all design files available for you to modify and adapt. Plus, with our 2-year warranty and technical support, you can be confident in your purchase.

Light is one of the most important things in the life of most living beings. This is why it is common to work with light sensors when learning about electronics. A simple light sensor has a light dependent resistor (LDR) and sensor on a breakout board for easy wiring. The simple sensor comes with easyC connectors onboard, which enables quick and easy connection with Dasduino microcontroller boards.

As the name suggests, an LDR will change its resistance depending on the amount of light it is exposed to. The amount of light and resistance are inversely proportional. The more light it is exposed to, the less resistance it will have. So if there is more light, the board will have a resistance of several hundred Ohms. If the resistor is in the dark, it will have a resistance of several thousand Ohms.

For very precise measurements of the amount of light, take this digital light sensor into account (ALS – Ambient Light Sensor). In addition, the LTR-507ALS also measures the proximity (PS – Proximity Sensor) of the object to the sensor. It sends all this data via I2C communication, which is easy to read via our Arduino library.

A phototransistor is a component that is able to detect light. This phototransistor is special because (due to their dark lenses) it detects infrared (IR) light better than the other. Therefore, it is practical for fire detection, sunlight etc.

Soldered has created a module with an LM393 voltage comparator using this sensor. Check it out here.