Smarthon Sensor Modules

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Noise sensor use a microphone with an amplifier to detect the sound level of the environment. It will capture the original sound wave, enlarge it, and reproduce it in voltage form. When using the sensor to calculate the sound level, use the amplitude to decide the result.

$5.00$15.00

Noise sensor – use a microphone with an amplifier to detect the sound level of the environment. It will capture the original sound wave, enlarge it, and reproduce it in voltage form. When using the sensor to calculate the sound level, use the amplitude to decide the result.

Specifications:

  • Supply voltage: 3.3V – 5V
  • Interface: Analog
  • Output Range: 0~3.5V

 

The Distance sensor – uses two ultrasonic sensors to detect the distance between current position and object. In most situation, the availability of ultrasonic allow it provided quick and accurate result.

Specifications:

  • Supply voltage: 5V
  • Working Frequency: 40kHz
  • Range: 3cm to 4m
  • MeasuringAngle: <15°

 

The Light sensor use one photoresistor to detect the luminance of the environment. The darker of the environment, the lower voltage will be provided.The Light sensor also call as Light Dependent Resistor(LDR), the physical property will change under different light source as the name implied. Depending on the model of different LDR, the resistance value and curves have difference, but all follow the principle: When the Illumination is increase, the resistance of the resistor will reduce. When the Illumination is decrease, the resistance of resistor will increase.

 

Specification:

  • Supply Voltage: 3.3V to 5V
  • Interface: Analog Output Voltage
  • Range: 1%~90% of supply
  • Voltage Reading in the PXT(with Mirco:bit): 1~100(0.04V~3.3V)

 

The Temperature and Humidity Sensor (DHT11) contains two major components to detect humidity and temperature respectively. The first component is using Conductivity to measure the environment humidity. When humidity is changing, the polymer between two electrodes will change the conductivity, causing the resistance between electrodes drop or rise. The chip on DHT11 will use it to determine correct humidity. For the second component on DHT11, it is a Negative Temperature Coefficient(NTC) thermistor, when the temperature is rising, the resistance will decrease as follow. The chip will use that to determine the environment temperature.

 

Specifications:

  • Supply Voltage: 3.3V to 5V
  • Range of Temperature reading: 0-50°C with +- 2°C accuracy
  • Range of Humidity reading: 20%~80% with +- 5% accuracy

 

The Motion Sensor use a pyroelectric infrared sensor to detect any moving object at front.When the infrared signal have rapid change, the sensor will return high to user, otherwise, return low. The pyroelectric infrared sensor will keeping record the infrared signal inside target area. Human will emit the infrared light cause by the body temperature, when they pass thought the detection area, the signal received by sensor will have fluctuation which can determine the movement of object. Generally, the maximum range of the detection is 5 to 12 meters , create a spherical sector with 65 degree from normal line.

 

Specification:

  • Supply Voltage: 3.3V
  • Interface: Analog
  • Operation Temperature: -20 ~ 85°C
  • Angle of detection: <65° from normal of center

 

Raindrop sensors use the Conductivity to determine the rain drops is on the board or not, when there are no liquid on the board, the reading will be very small (0 if no liquid), however even one drop of rain, can increase the conductivity very much and make the reading to extremely high (100).

The RainDrop Sensor use the conductivity between the two electrodes to determine the change of the water drop on the plane. When there is no water drop on the plane, the material between the two electrodes is air, result in very low conductivity. However, when the water drop is on the plane, the conductivity between the electrodes will become very high since water is a good conductor.

 

Specification:

  • Supply Voltage: 5V
  • Interface: Analog
  • Range: 0(Dry surface) ~ 100(WaterDrop on surface)

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Type of Sensors

PIR Motion Sensor, Raindrop Sensor, Noise Sensor, Ultrasonic Distance, Light Sensor, Temperature Humidity

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