The rain sensor module is an easy tool for rain detection. It can be used as a switch when raindrop falls through the raining board and also for measuring rainfall intensity. The module features a rain board and a control board that are separated for the ease of convenience, power indicator LED and adjustable sensitivity by way of a potentiometer. The analog output is used in measuring the amount of rainfall. Connected to 5V power supply, the LED will turn on when induction board has no rain drop, DO output is HIGH. When dropping a little amount of water, DO output turns LOW, the switch indicator will turn on! Brush off the water droplets, and when restored to the initial state, the output jumps back to HIGH.
- Driving capability of 100 mA, enabling it to drive relays, buzzers, small fans and more
- LED indicators for power and output signal
- Adjustable sensitivity via potentiometer
- Nickel Coated Sensor Board with 0.5 micron casing for longer life and to prevent corrosion and oxidation
- Adopts high quality RF-04 double sided material.
- 5cm x 4cm nickel plate
- Anti-oxidation, anti-conductivity, with long use time
- Comparator output - Clean output waveform is good, with driving ability over 15mA
- Potentiometer-adjustable sensitivity
- Working voltage: 5V
- Uses a wide voltage range LM393 comparator
- Output format: Digital binary and Analog Output AO
- Bolt holes for easy installation
- Small PCB size: 3.2cm x 1.4cm
LM35 is a precision IC temperature sensor with its output proportional to the temperature (in oC). The sensor circuitry is sealed and therefore it is not subjected to oxidation and other degrading processes. With LM35, temperature can be measured more accurately than with a thermistor although not the same range(s). It also possesses low self-heating protection and does not cause more than 0.1 oC temperature rise in still air.
The operating temperature range is from -55°C to 150°C. The output voltage varies by 10mV in response to every oC rise/fall in ambient temperature i.e. its sennsitivity factor is 0.01V/ oC.
- Calibrated Directly in Celsius (Centigrade)
- Linear +/- 10mV/°C Sensitivity
- +/-0.5°C ensured Accuracy (at 25°C)
- Rated for full −55°C to 150°C Operating Range
- Suitable for Remote Applications
- Low-Cost due to wafer-level Trimming
- Operates from 4V to 30V
- Less than 60µA Current Drain
- Low Self-heating, 0.08°C in Still Air
- Non-Linearity as low as ¼°C Typical
- Low-Impedance Output - 0.1 for 1mA Load
Light Dependent Resistor (LDR) Module is a component that is sensitive to light. When light falls upon it then the resistance changes. It is used to detect the presence of light therby measuring the intensity of light. Values of the resistance of the LDR may change rapidly as the light intensity increases and decreases. With such a wide variation in resistance, LDRs are easy to use and there are many circuits available around it. The output of the module goes high in the presence of light and it becomes low in the absence of light. The sensitivity of light detection can be adjusted using the provided potentiometer.
- Operating Voltage: 3.3V to 5V DC
- Operating Current: 15mA
- LEDs indicating output and power
- LM393 comparator based design for cleanly latched outputs
- Output Digital - 0V to 5V, Adjustable trigger level using the preset
- Output Analog - 0V to 5V based on light falling on the LDR
The HMC5883L is a triple-axis magnetometer/ compass, which uses I2C interface for communication. Compass 'heading' accuracy ranges between 1° to 2°, made possible by an internal 12-bit ADC (Analog-to-Digital Converter). It includes on-board voltage regulator, allowing you to power the module with voltages between 3.3V and 6V. The module includes on-board pull-up resistors on the I2C wires. There is a 'data ready' pin (pin DRDY) you can use to make your communication with the module more efficient. Since this module has such great compass heading accuracy, it is great for giving your robot precise navigation abilities.
HMC5883L Triple-Axis Magnetometer Compass GY-273 Module x 1No.
5-pin male header x 1No.
Humidity is the presence of water (dampness) in the air/ body (say, soil) around. The amount of water vapor in air affects human comfort, working/ efficiency of medicines, injectables, electronic components...as well as a number of manufacturing processes cutting across industries...The presence of water vapor influences various physical, chemical and biological processes.
Humidity measurement in industries is critical because it may affect the business cost of the product, storage & transportation as well as the health and safety of the personnel handling the same. Humidity sensing becomes very important in the control systems too.
- Relative Humidity sensor
- Two-stage calibration with capacitor-type sensor, excellent performance
- Frequency output type, can be easily integrated with user application systems
- Very low power consumption
- No extra components needed
- Consumer Goods
- Weather Stations
- Test & Measurement
- Data Logging
- White Goods
Sensitive material of MQ-2 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, the sensor’s conductivity is higher along with the gas concentration rising. Please use simple electro circuit, Convert change of conductivity to correspond output signal of gas concentration. MQ-2 gas sensor has high sensitivity to LPG, Propane and Hydrogen, also could be used to Methane and other combustible steam, it is with low cost and suitable for different application.
• Operating Voltage is +5V
• Can be used to Measure or detect LPG, Alcohol, Propane, Hydrogen, CO and even methane
• Analog output voltage: 0V to 5V
• Digital Output Voltage: 0V or 5V (TTL Logic)
• Preheat duration 20 seconds
• Can be used as a Digital or analog sensor
• The Sensitivity of Digital pin can be varied using the potentiometer
MQ-3 module is suitable for detecting Alcohol, Benzene, CH4, Hexane, LPG, CO. Sensitive material of MQ-3 gas sensor is SnO2, which with lower conductivity in clean air. When the target alcohol gas exist, the sensor’s conductivity is higher along with the gas concentration rising. MQ-3 gas sensor has high sensitivity to Alcohol, and has good resistance to disturb of gasoline, smoke and vapor.
This sensor provides an analog resistive output based on alcohol concentration. When the alcohol gas exist, the sensor’s conductivity gets higher along with the gas concentration rising.
There is a resistance across an A and B inside the sensor which varies on detection of alcohol. More the alcohol, the lower will be the resistance. The alcohol is measured by measuring this resistance. The sensor and load resistor form a voltage divider, and the lower the sensor resistance, the higher the voltage reading will be.
Features of MQ-3 Alcohol Sensor:
• Sensor Type - Semiconductor
• Easy SIP header interface
• Compatible with most of the microcontrollers
• Low-power standby mode
• Requires heater voltage
• Good sensitivity to alcohol gas
• Fast response and High sensitivity
• Long life and low cost
• Requires simple Drive circuit
Structure and configuration of MQ-4 gas sensor is composed of micro AL2O3 ceramic tube, Tin Dioxide (SnO2) sensitive layer, measuring electrode and heater are fixed into a crust made by plastic and stainless steel net. The heater provides necessary work conditions for work of sensitive components. The enveloped MQ-4 has 6 pin, 4 of them are used to fetch signals, and other 2 are used for providing heating current.
MQ-4 Gas Sensor Features:
• Good sensitivity to Combustible gas in wide range.
• High sensitivity to CH4, Natural gas.
• Small sensitivity to alcohol, smoke.
• Fast response Stable and long life.
• Simple drive circuit.
This Carbon Monoxide (CO) gas sensor detects the concentrations of CO in the air and outputs its reading as an analog voltage. The sensor can measure concentrations of 10 to 10,000 ppm. The sensor can operate at temperatures from -10 to 50°C and consumes less than 150mA at 5V. This semiconductor gas sensor detects the presence of Carbon Monoxide at concentrations from 10 to 10,000 ppm. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller.
• 5V operation
• Simple to use
• LEDs for output and power
• Output sensitivity adjustable
• Analog output 0V to 5V
• Digital output 0V or 5V
Air quality sensor is used for detecting a wide range of gases, including NH3, NOx, alcohol, benzene, smoke and CO2. It is Ideal for use in office or factory. MQ135 gas sensor has high sensitivity to Ammonia, Sulfide and Benze steam, also sensitive to smoke and other harmful gases. It is with low cost and particularly suitable for Air quality monitoring application.
- Wide detecting scope
- Fast response and High sensitivity
- Stable and long life
- Operating Voltage is +5V
- Detect/Measure NH3, NOx, alcohol, Benzene, smoke, CO2, etc.
- Analog output voltage: 0V to 5V
- Digital output voltage: 0V or 5V (TTL Logic)
- Preheat duration 20 seconds
- Can be used as a Digital or analog sensor
- The Sensitivity of Digital pin can be varied using the potentiometer
Ultrasonic sensors measure object separation distance using ultrasonic waves.
The sensor head emits an ultrasonic wave and receives the wave reflected back from the target. Ultrasonic Sensors measure the distance to the target by measuring the time between the emission and reception. It generates high-frequency sound (above the human hearing range) waves. HC SR04 module provides for a detection range of 2-400cm, contactless measurement! The modules includes ultrasonic transmitter, receiver and a control circuit.
- An IO trigger for at least 10us high level signal
- The module automatically sends eight 40kHz pulses and detects whether there is a pulse signal back
- If there is indeed a pulse received, thru a 'High' on the 'Echo' pin, the duration (Time Elapsed) between the pulse triggered and received is measured and processed to arrive at the separation
- Distance = Time Elapsed × Velocity of Sound (340M/s) / 2}
The ADXL335 is a small, thin, low power, complete 3-axis accelerometer with signal conditioned voltage outputs. The product measures acceleration with a minimum full-scale range of ±3 g. It can measure the static acceleration of gravity in tilt sensing applications, as well as dynamic acceleration resulting from motion, shock, or vibration.
The user selects the bandwidth of the accelerometer using the CX, CY, and CZ capacitors at the XOUT, YOUT, and ZOUT pins. Bandwidths can be selected to suit the application, with a range of 0.5 Hz to 1600 Hz for X and Y axes, and a range of 0.5 Hz to 550 Hz for the Z axis.
The ADXL335 is available in a small, low profile, 4 mm × 4 mm × 1.45 mm, 16-lead, plastic lead frame chip scale package (LFCSP_LQ).
• 3-axis sensing
• Small, low-profile package
• 4 mm × 4 mm × 1.45 mm LFCSP
• Low power - 350 μA (typical)
• Single-supply operation 1.8 V to 3.6 V
• 10,000 g shock survival
• Excellent temperature stability
• BW adjustment with a single capacitor per axis
• RoHS/WEEE lead-free compliant
This sensor can be used to test the moisture of soil, when the soil is having water shortage, the module output is at high level, and else the output is at low level. By using this sensor one can automatically water the flower plant, or any other plants requiring automatic watering technique. Module triple output mode, digital output is simple, analog output more accurate, serial output with exact readings.
• Sensitivity adjustable.
• Has fixed bolt hole, convenient installation.
• Threshold level can be configured.
• Module triple output mode - Digital output, Analog output more accurate, Serial output with exact readings..
Operating Voltage :5V dc regulated
Soil moisture :Digital value is available on the 'Out' pin
This Arduino compatible TCS3200 color sensor module consist of a TAOS TCS3200 RGB sensor chip and 4 white LEDs. The main part of the module is the TCS3200 chip which is a Color Light-to-Frequency Converter. The white LEDs are used for providing proper lighting for the sensor to detect the object colour correctly. This chip can sense a wide variety of colours and it gives the output in the form of corresponding frequency. This module can be used for making colour sorting robots, test strip reading, colour matching tests etc.
The TCS3200 chip consist of an 8 x 8 array of photodiodes. Each photodiode have either a red, green, or blue filter, or no filter. The filters of each color are distributed evenly throughout the array to eliminate location bias among the colors. An internal circuit includes an oscillator which produces a square-wave output whose frequency is proportional to the intensity of the chosen color.
The sound sensor module provides an easy way to detect sound and is generally used for measuring sound intensity. This module can be used for monitoring and security applications. Its accuracy can be adjusted using the POT provided. It uses a microphone which inputs to an amplifier, peak detector and buffer. When the sensor does detect sound, it generates an output signal voltage which is sent to a microcontroller which does the required processing.
The TSOP 1738 is a member of IR remote control receiver series. This IR sensor module consists of a PIN diode and a pre amplifier which are embedded into a single package. The output of TSOP is active low and it gives +5V in off state. When IR waves, from a source, with a center frequency of 38 kHz incident on it, its output goes low.
Lights coming from sunlight, fluorescent lamps etc. may cause disturbance to it and result in undesirable output even when the source is not transmitting IR signals. A band pass filter, an integrator stage and an automatic gain control are used to suppress such disturbances.
TSOP module has an inbuilt control circuit for amplifying the coded pulses from the IR transmitter. A signal is generated when PIN photodiode receives the signals. This input signal is received by an automatic gain control (AGC). For a range of inputs, the output is fed back to AGC in order to adjust the gain to a suitable level. The signal from AGC is passed to a band pass filter to filter undesired frequencies. After this, the signal goes to a demodulator and this demodulated output drives an npn transistor. The collector output of the transistor is obtained at pin 3 of TSOP module.
Members of TSOP17xx series are sensitive to different center frequencies of the IR spectrum. For example TSOP1738 is sensitive to 38 kHz whereas TSOP1740 to 40 kHz center frequency.
PIR sensors allow you to sense motion, almost always used to detect whether a human has moved in or out of the sensors range. They are small, inexpensive, low-power, easy to use and don't wear out. For that reason they are commonly found in appliances and gadgets used in homes or businesses. They are often referred to as PIR, "Passive Infrared", "Pyro electric", or "IR motion" sensors.
- Infrared Sensor with Control Circuit Board
- The Sensitivity and Holding Time Can be Adjusted
- Blockade time: 2.5s (Default)
- Sensitive Setting: Turn to Right, Distance Increases (About 7M); Turn to Left, Distance Reduce (About 3M)
- Time Setting: Turn to Right, Time Increases (About 200S); Turn to Left, Time Reduce (About 5S).
An infrared sensor is an electronic device that emits in order to sense some aspects of the surroundings. An IR sensor can measure the heat of an object as well as detects the motion. These types of sensors measure only infrared radiation, rather than emitting it that is called as a passive IR sensor.The IR sensor module consists mainly of the IR Transmitter and Receiver, Opamp, Variable Resistor (Trim pot), output LED in brief.
Flex sensors are usually available in two sizes. One is 2.2 inch and another is 4.5 inch. Although the sizes are different the basic function remains the same. They are also divided based on resistance. There are LOW resistance, MEDIUM resistance and HIGH resistance types. Choose the appropriate type depending on requirement. Here we are going to discuss 2.2inch Flex sensor that is FS-L-0055.
Features and Specifications
• Operating voltage of FLEX SENSOR: 0-5V
• Can operate on LOW voltages
• Power rating : 0.5Watt (continuous), 1 Watt (peak)
• Life: 1 million
• Operating temperature: -45ºC to +80ºC
• Flat Resistance: 25K
• Resistance Tolerance: 30%
• Bend Resistance Range: 45K to 125K Ohms(depending on bend)
This is a force-sensitive resistor with a square, 1.5" x 1.5″ sensing area. This FSR resistance varies depending on how much pressure is applied on the sensing area.
The harder the force, the lower the resistance. When no pressure is applied to the FSR its resistance will be larger than 1MΩ. This FSR can sense applied force anywhere in the range of 100g-10kgs.
Two pins extend from the bottom of the sensor with 0.1″ pitch making it breadboard-friendly. There is a peel-and-stick rubber backing on the other side of the sensing area to mount the FSR.
Just connect a resistor to form a voltage divider and measure the voltage at the junction (across the FSR) to find the force applied.
These sensors are simple to set up and great for sensing mechanical pressure, but they aren’t incredibly accurate. Use them to sense adhoc pressures applied (presence of it), but you may not want to use it as a reference scale.
This sensor can be easily interfaced with Microcontrollers boards viz. Arduino Boards, Raspberry Pi etc. using an Analog to Digital Converter (ADC).
The module is based on a touch-sensing IC (TTP223B) capacitive touch switch module. In the normal state, the modules output is low, lower power consumption; when a finger touches the corresponding position, the modules output is high, if not touched for 12 seconds, it switches to low-power mode. Jog type: the initial state is lower, higher touch , do not touch is lower ( similar touch of a button feature )
This Module can be installed in such as surface plastic, glass of non-metallic materials. In addition to the thin paper (non-metallic) covering the surface of the module , as long as the correct location of the touch , you can make hidden in the walls, desktops and other parts of buttons.
• Low power consumption
• Power supply for 2.5-.5V DC
• Can replace the traditional touch of a button
• Four M2 screws positioning holes for easy installation
Heart beat sensor is designed to give digital output of heat beat when a finger is placed on it. When the heart beat detector is working, the beat LED flashes in unison with each heartbeat. This digital output can be connected to microcontroller directly to measure the Beats per Minute (BPM) rate.
• Biometric Pulse Rate or Heart Rate detecting sensor
• Plug and Play type sensor
• Operating Voltage: 5V or 3.3V
• Current Consumption: 4mA
• Inbuilt Amplification and Noise cancellation circuit.
• Diameter: 0.625”
• Thickness: 0.125” Thick
The module is based on a touch sensing IC (TTP223B), a capacitive touch switch module. In the normal state, the module's output is LOW, when a finger touches the sensing area, the module's output turns HIGH. If not touched for 12 seconds, it switches to 'low-power' mode. Jog type: initial state is LOW, touch - HIGH, no touch - LOW again!
This module can be installed with a plastic sheath, on the glass of non-metallic material. In addition to the thin paper (non-metallic) covering the surface of the module, the touch can invoke applications, windows, screens, functions when done on the appropriately right place.
- Low power consumption
- Power supply for 2 ~ 5.5V DC
- Can replace the traditional touch of a button
- Four M2 screws positioning holes for easy installation
Water flow sensor consists of a plastic valve body, a water rotor, and a hall-effect sensor. When water flows through the rotor, rotor rolls. Its speed changes with different rate of flow. There is an integrated magnetic Hall-Effect sensor that outputs an electrical pulse with every revolution. The output can easily be connected to a microcontroller for monitoring water usage and calculating the amount of water remaining in a tank etc. It measures liquid/water flow for your solar, water conservation systems, storage tanks, water recycling home applications, irrigation systems and much more.