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The color sensor is also known as “color sensor”, “color recognition sensor”, “color discrimination sensor”, “digital color sensor” and other names. The principle of the color sensor is to obtain color data by dividing visible light into different signals through its internal red (R), green (G), and blue (B) sensors plus color filters.

This sensor uses the 3144 Hall switch integrated circuit, which is a magnetic sensitive circuit with the characteristics of small size, high sensitivity and fast response.
Integrated power indicator light and working status indicator light can clearly check the working status of the sensor. When the sensor senses a magnetic field, the signal output bit outputs a low level and lights up the indicator light; when there is no magnetic field, the signal output bit outputs a high level.

This smoke sensor uses MQ-2 type gas sensor, which can sensitively detect smoke and methane gas in the air. The 3P sensor connection line can be directly plugged into the Arduino uno controller for easy use. Combining the buzzer module and relay module, you can make smoke alarms, methane leak alarms, automatic smoke exhaust fans and other products to make indoor air The ideal sensor to meet environmental standards.

The relay sensor uses high-quality relays. The maximum load of the normally open interface is AC 250V/10A and DC 30V/10A. The sensor has one signal input and the trigger voltage is above 0.7V. The sensor integrates a power indicator light to display the working status.

The sensor uses the DS1302 chip, which contains a real-time clock/calendar and 31 bytes of static RAM, and communicates with the microcontroller through a serial interface. The real-time clock/calendar circuit provides seconds, minutes, hours, days, weeks, months, and years of information, and the number of days in each month and leap year can be automatically adjusted. Clock operation can be determined by AM/PM indication in 24 or 12 hour format. It has the characteristics of low power consumption and high precision.

This sensor uses large-size LEDs and can be connected to a controller to simulate traffic light operation.

This sensor uses a special digital tube drive circuit TM1650, which does not require a microcontroller to dynamically scan the digital tube. It only needs to write data to a specific address through the IIC method, with 8-level grayscale display. It is suitable for making digital tube displays such as counters, frequency meters, stopwatches, etc.

This photoresistor sensor is sensitive to ambient light intensity. It is generally used to detect the brightness and light intensity of the surrounding environment. It can sense the light source in a fixed direction. When connected to the controller, it can read the ambient light intensity and can be made into a photoelectric switch. The photoresistor is A resistor made using the photoelectric effect of semiconductors whose resistance value changes with the intensity of incident light; when the incident light is strong, the resistance decreases, and when the incident light is weak, the resistance increases. Photoresistors are generally used for light measurement, light control and photoelectric conversion (converting changes in light into changes in electricity). Commonly used photoresistors are cadmium sulfide photoresistors, which are made of semiconductor materials. The resistance of the photoresistor changes with the intensity of the incident light (visible light). Under dark conditions, its resistance (dark resistance) can reach 1~10M ohms. Under strong light conditions (100LX), its resistance The value (bright resistance) is only a few hundred to thousands of ohms. The sensitivity of the photoresistor to light (ie, the spectral characteristics) is very close to the response of the human eye to visible light (0.4~0.76) μm. As long as the light that the human eye can feel will cause its resistance to change.

This sensor is a capacitive point-type trigger sensor based on a touch detection IC (TTP23B). Under normal conditions, the sensor outputs low level. This mode is a low power consumption mode. When the finger touches the corresponding position, the module outputs high level. The sensor can be installed on non-metallic materials, which can avoid the troubles caused by traditional push buttons.

The human body induction sensor can detect infrared rays emitted by moving people or animals and output switching signals. It can be used in various situations where moving human bodies need to be detected. Traditional pyroelectric infrared sensors require human body pyroelectric infrared probes, dedicated chips and complex peripheral circuits to implement. They are slightly larger in size, complex in circuit and slightly less reliable. Our newly launched infrared pyroelectric motion sensor is specially designed for Arduino. It adopts a digital integrated human body pyroelectric infrared probe and has the characteristics of small size, high reliability, low power consumption and simple peripheral circuit. Application scope: moving human body detection, occupancy detection, infrared anti-theft system, etc.

This sound sensor is an analog output and uses a high-precision MIC to collect sound source amplification, timbre, frequency and other information; combined with the main control and power amplifier, it can be built into a sound amplifier.

This tilt sensor uses a high-precision sw200D switch, which can detect tilt in one direction and send out a signal when there is tilt. Note that this sensor can only detect whether there is tilt, and cannot detect the degree of tilt.

This module is an Arduino-compatible 38KHz infrared receiving sensor that can receive standard 38KHz modulated remote control signals. By programming the Arduino, the decoding operation of the remote control signals can be achieved. Used in conjunction with Arduino and IR Transmitter Module, infrared wireless communication can be achieved.

This photoresistor sensor is sensitive to ambient light intensity. It is generally used to detect the brightness and light intensity of the surrounding environment. It can sense the light source in a fixed direction. When connected to the controller, it can read the ambient light intensity and can be made into a photoelectric switch. The photoresistor is A resistor made using the photoelectric effect of semiconductors whose resistance value changes with the intensity of incident light; when the incident light is strong, the resistance decreases, and when the incident light is weak, the resistance increases. Photoresistors are generally used for light measurement, light control and photoelectric conversion (converting changes in light into changes in electricity). Commonly used photoresistors are cadmium sulfide photoresistors, which are made of semiconductor materials. The resistance of the photoresistor changes with the intensity of the incident light (visible light). Under dark conditions, its resistance (dark resistance) can reach 1~10M ohms. Under strong light conditions (100LX), its resistance The value (bright resistance) is only a few hundred to thousands of ohms. The sensitivity of the photoresistor to light (ie, the spectral characteristics) is very close to the response of the human eye to visible light (0.4~0.76) μm. As long as the light that the human eye can feel will cause its resistance to change.

This sensor uses high-quality keys and can be used repeatedly. It is small in size and has up to 8 keys. It is suitable for use as an external expansion keyboard.