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Soil Moisture Sensor Module
Price: $4.62
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Elecrow Item #: EL-SPM30421S -

This Soil Moisture Sensor can be used to detect the moisture of soil or judge if there is water around the sensor, let the plants in your garden reach out for human help.Insert this module into the soil and then adjust the on-board potentiometer to adjust the sensitivity. The sensor would outputs logic HIGH/LOW when the moisture is higher/lower than the threshold set by the potentiometer.With help of this sensor, it will be realizable to make the plant remind you : Hey, I am thirsty now,...

G1/2" Water Flow Sensor
Price: $11.67
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Elecrow Item #: EL-SOT80012WF -

Water flow sensor consists of magnetic core, rotating impeller, external casing and sensor and a hall-effect sensor. When water flows through the rotor, rotor rolls, it activates the magnetic core to trigger switch action speed changes with different rate of flow. The hall-effect sensor outputs the corresponding pulse signals, users can get the flow speed via detecting the pulse. It is suitable to detect flow in water dispenser or coffee machine. There are also lots of other water flow sensors...

Triple Axis Magnetometer Breakout
Price: $10.92
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Elecrow Item #: EL-SPS05883S -

Triple Axis Magnetometer Breakout Description: This is a breakout board for Honeywell's HMC5883L, a 3-axis digital compass, provides compass heading accuracy up to 1° to 2°. Communication with the HMC5883L is simple and all done through an I2C interface. An Arduino Demo is given out to help users learn how to use this sensor. The breakout board includes the HMC5883L sensor and all filtering capacitors as shown. This module also includes a DC regular for power supply requirement. Hence...

Temperature and Humidity Sensor Pro(AM2302)
Price: $18.20
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Elecrow Item #: EL-SES23031S -

This AM2302 temperature and humidity sensor also called DHT22 which is a high accuracy temperature and humidity sensor used in home conditions. It consists of a capacitive sensor element used for measuring relative humidity and a negative temperature coefficient (NTC) thermistor used for measuring temperature. Each sensor was calibrated in an accurate humidity room. Small dimension, ultra low power consumption, more than 20m\'s signal transmission distance make it a good selection for various...

G3/4" Water Flow Sensor
Price: $20.95
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Elecrow Item #: EL-SOT80034WF -

Water flow sensor consists of magnetic core, rotating impeller, external casing and sensor and a hall-effect sensor. When water flows through the rotor, rotor rolls, it activates the magnetic core to trigger switch action speed changes with different rate of flow. The hall-effect sensor outputs the corresponding pulse signals, users can get the flow speed via detecting the pulse. It is suitable to detect flow in water dispenser or coffee machine. There are also lots of other water flow sensors...

MQ135 Gas Sensor for Air Quality
Price: $8.87
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Elecrow Item #: EL-SEN17850M -

Sensitive material of MQ135 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensors conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration. MQ135 gas sensor has high sensitity to Ammonia, Sulfide and Benze steam, also sensitive to smoke and other harmful gases. It is with low cost and suitable for different...

TCS3200 Colour Sensor Module
Price: $18.20
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Elecrow Item #: EL-SEN32001T -

TCS3200 chip is designed to detect the color of light incident on it. It has an array of photodiode (a matrix of 8x8, so a total 64 sensors). These photodiodes are covered with four type of filters. Sixteen sensor have RED filter over them thus can measure only the component of red in the incident light. Like wise other sixteen have GREEN filter and sixteen have BLUE filter. As you should know that any visible colour can be broken into three primary colours. So these three type of filtered...

Photo Reflective Sensor - ST188
Spotlight!
Price: $2.33
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Elecrow Item #: EL-SLS01014S -

This is a reflective sensor combines a GaA1As infrared light emitting diode with a high sensitive Darlington phototransistor in a mini package. Specification ...

Soil Moisture Sensor
Price: $3.03
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Elecrow Item #: EL-SPM32100S -

This Moisture Sensor can be used to detect the moisture of soil or your pet plant\'s water level, let the plants in your garden reach out for human help. With the Octopus Electronic Bricks interface can very easy to used with the sensor shield V4.0. This sensor uses the two probes to pass current through the soil, and then it reads that resistance to get the moisture level. More water makes the soil conduct electricity more easily (less resistance), while dry soil conducts electricity poorly...

Non-invasive AC Current Sensor-100A
Price: $18.62
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Elecrow Item #: EL-SEL98100NI -

The AC current sensor is based on Current transformers, it transforms the big AC current to little, and then convert to voltage with the build-in resistor so users can get the AC current value via measuring the output voltage with any microcontroller such as Arduino. The split core type makes this sensor suitable for DIY usage such as energy monitoring for house & building.SpecificationInput Current: 0~100A ACOutput Mode: 0~50mANon-linearity: ±3%Turn Ratio: 100A:0.05AResistance Grade:...

Weight Sensor Kit- 3KG
Price: $39.20
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Elecrow Item #: EL-SEN003KGK -

This Kit includes a weight sensor that has a capacity of 3kg, it included all the related parts includes the HX711 ampplifier,100g weights, wires and the related mechanic parts to install the weight sensor, You just need to connect this amplified signal to your microcontroller such as Arduino, to make an electronic scale or a pressure testing application Partlist3KG weight sensor x1;HX711 amplifier X1;100g weights X1;weight sensor mechanic parts x1; Wiki & External linksWiki link ...

Energy Monitor Shield
Price: $53.64
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Elecrow Item #: EL-COP77012DE -

Energy Monitor Shield is an Arduino-compatible expansion card designed for building energy monitoring system with LCD screen and an interface for connecting the wireless transceiver nRF24L01 +.FeaturesConnect up to three sensors AC (30-100A). Support for LCD Screen Nokia LCD5110Turn off the LCD backlight with a jumperTwo buttons to control (operate one analog pin) Interface to connect the transceiver to 2.4G nRF24L01 + GROVE-compatible connector: I2C Fully compatible with Ethernet Shield...

G1/4" Water Flow Sensor
Price: $9.29
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Elecrow Item #: EL-SOT80014WF -

Water flow sensor consists of magnetic core, rotating impeller, external casing and sensor and a hall-effect sensor. When water flows through the rotor, rotor rolls, it activates the magnetic core to trigger switch action speed changes with different rate of flow. The hall-effect sensor outputs the corresponding pulse signals, users can get the flow speed via detecting the pulse. It is suitable to detect flow in water dispenser or coffee machine. There are also lots of other water flow sensors...

Barometer Sensor
Price: $18.43
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Elecrow Item #: EL-STH01002S -

This Barometer Sensor has a Bosch BMP085 which is a high-accuracy chip to detect barometric pressure and temperature. It can widely measure pressure ranging from 300hPa to 1100hPa, AKA +9000m to -500m above sea level, with a super high accuracy of 0.03hPa(0.25m) in ultra-high resolution mode. This Barometer sensor compatible with 3.3V and 5V, so it can be used in Arduinos without moditdfication.FeaturesWide pressure rangeArduino/Crowduino compatible interface (3.3V or 5V)I2C interfaceFully...

Dust Sensor- GP2Y1010AU0F
Price: $20.53
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Elecrow Item #: EL-SGP2Y1010AU -

Sharp\'s GP2Y1010AU0F is an optical air quality sensor, designed to sense dust particles. An infrared emitting diode and a phototransistor are diagonally arranged into this device, to allow it to detect the reflected light of dust in air. It is especially effective in detecting very fine particles like cigarette smoke, and is commonly used in air purifier systems. The sensor has a very low current consumption (20mA max, 11mA typical), and can be powered with up to 7VDC. The output of the...

MQ5 Gas Sensor
Price: $8.12
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Elecrow Item #: EL-SEN13650M -

The MQ5 Gas Sensor module is useful for gas leakage detecting. It can detect LPG, i-butane, methane, alcohol, Hydrogen, smoke and so on. The sensitivity can be adjusted using the on-board potentiometer, and you\'d use this sensor by reading the analog pin to which it is connected. Please use these sensors only in controlled experiments! Combustible gases and fumes are very dangerous! Here are details for some MQ gas sensor. SysmbolMQ-2MQ-3MQ-5MQ-9Detect GasCombustible Gas, SmokeAlcohol...

Sensor Shield V4.0 For Arduino
Price: $15.87
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Elecrow Item #: EL-MCS01002S -

Arduino Sensor Shield V4.0 let us to build electronics projects just as easy as piling bricks. It can connect to various modules like sensors, servos, relays, buttons, potentiometers. Just plug & play. Each functional module has buckled port with VCC, GND and Output, which has corresponding port on the Sensor Shield, connected with a plain 2.54mm dual-female cable you may start playing already.Buckled brick cables are like cement for bricks, make the connections easier, secure and more...

High sensitivity vibration sensor for vehicle
Price: $9.29
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Elecrow Item #: EL-SPM8667VC -

High sensitivity vibration sensor for vehicleDescription: This a high sensitivity vibration sensor mainly used for security detecting. This module features high sensitivity, fast response and excellent performance, and it is widely used to for security applications such as anti-theft system for vehicle. The module outputs a logic Low voltage when vibration detected, and the sensitivity can be adjusted by the potentiometer, which would be convenient for DIY projects.Specification Input...

1-Axis Analog Gyro Module-ENC03
Price: $13.95
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Elecrow Item #: EL-SENC031G -

This angular velocity sensor utilizes a Coriolis force that act on a vibrating object when an angular velocity is applied to it. The use of this unit simplifies equipment structure and circuit configuration, thus making it possible to provide outstanding performance. This module can be used for positional control and posture control of a moving object requiring precision and quick-response measurements. There is one ENC-03r senor on this module, provides 1-axis velocity with high speed, which...

Analog Smoke/LPG/CO Gas Sensor(MQ2)
Price: $6.25
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Elecrow Item #: EL-SES28011S -

The Analog Smoke/LPG/CO Gas Sensor(MQ2) module utilizes an MQ-2 as the sensitive component and has a protection resistor and an adjustable resistor on board. The MQ-2 gas sensor is sensitive to LPG, i-butane, propane, methane, alcohol, Hydrogen and smoke. It could be used in gas leakage detecting equipments in family and industry. The resistance of the sensitive component changes as the concentration of the target gas changes.Application Idea Domestic gas leakage detector Industrial gas...

Wired NTC Thermistor- 10K 0.5m
OOD!
Price: $4.90
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Elecrow Item #: EL-SET99801W -

This wired thermistor is popular used in Industrial Applications such as air condition and heater, with its water proof shell, it can be also used in many DIY projects such as this application on instructables.Specification R25\u2103=10KB25/50\u2103=3950KTemperature Reaction Time: Working Temperature: -20~ 100 degree;Wire length: 0.5mWiki & External links B Parameter Definition on WIKI ...

EB - Capacitive Touch Sensor (toggle)
Price: $5.79
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Elecrow Item #: EL-EBR7549T -

EB - Capacitive Touch Sensor (toggle) Description: Are you tired with clicking mechanic button? Try our capacitive touch sensor. Right now we can find touch sensor on most electronic device. So uprade your Arduino project with our new version touch sensor and make it cool! This little sensor can "feel" people and metal touch and feedback a high/low voltage level. Even isolated by some cloth and paper, it still can feel the touch. And the sensetivity well decrease as isolation get thick. For...

Electronic Time Delay Module
Price: $11.20
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Elecrow Item #: EL-SPTD014M -

This time delay module provides you a way to control the time. Some time, you may want to control a LED on/off within some time, a microcontroller would be ok for such an application, but it would be troublesome, and expensive! This module would be help in these applications. With this module, you can set a delay time 0~14 minutes with the onboard potentiometer, unlike the other mechanic timer, this module is also friendly to microcontrollers, you can set the module start/stop timing, which...

Non-invasive AC Current Sensor-30A
Price: $18.62
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Elecrow Item #: EL-SEL98030NI -

The AC current sensor is based on Current transformers, it transforms the big AC current to little, and then convert to voltage with the build-in resistor so users can get the AC current value via measuring the output voltage with any microcontroller such as Arduino. The split core type makes this sensor suitable for DIY usage such as energy monitoring for house & building.SpecificationInput Current: 0~30A ACOutput Mode: 0~1VNon-linearity: ±1%Turn Ratio: 1800:1Building sample...

IR Reflective Sensor - TCRT5000
OOD!
Price: $4.67
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Elecrow Item #: EL-SPS15000S -

This IR reflective sensor utilizes a TCRT5000 to detect color and distance. It emits IR and then detects if it receives the echo. This sensor is often used in line following robots, auto data logging on utility meters, because this module can sense if a surface is white or black.The measuring distance range from 1mm to 8mm, and the central point is about 2.5mm. There is also an on-board potentiometer to adjust the sensitivity.The infrared diode will emmitting the infrared continutelly when the...

2-Channel Velocity Measurement Kit
Price: $19.13
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Elecrow Item #: EL-SPM6097VM -

This Kit helps you monitoring the velocity speed of motors, it uses the sensor HC-020 to sense the rotation of circular grid board, and thus output square waves. So users can calculate the rotation velocity or speed via these outputs frequency. There are 20 grids on the circular grid board, so each rising/falling edge standing an angle: 360/20= 18 degrees. Please uncover the yellow protect paper before your using. SpecificationWorking Voltage: 4.5~5.5 VDCEmitter Voltage Drop: 1.5VOutput...

Infrared Thermometer MLX90614 Breakout Board
Price: $25.67
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Elecrow Item #: EL-SPM90614S -

This is a MELEXIS MLX90614ESF-BAA-000-TU-ND non-contact infrared thermometer for use with Arduino, or any microcontroller that can communicate with it through it\'s I2C interface.Features Small size, low cost Mounted on a breakout board with two types of pins 10k Pull up resistors for the I2C interface with optional solder jumpers Easy to integrate Factory calibrated in wide temperature range:-40...+125\xb0C for sensor temperature and -70...+380\xb0C for object temperature. High accuracy of...

G1" Water Flow Sensor
Price: $27.95
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Elecrow Item #: EL-SOT80044WF -

Water flow sensor consists of magnetic core, rotating impeller, external casing and sensor and a hall-effect sensor. When water flows through the rotor, rotor rolls, it activates the magnetic core to trigger switch action speed changes with different rate of flow. The hall-effect sensor outputs the corresponding pulse signals, users can get the flow speed via detecting the pulse. It is suitable to detect flow in water dispenser or coffee machine. There are also lots of other water flow sensors...

Finger Clip Heart Rate Sensor
Price: $4.62
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Elecrow Item #: EL-SOT00100F -

This finger Clip Heart rate sensor uses an IR emitter and a receiver to detect pulse of finger. it can be used to monitor heart rate of patient and athlete. Note that the signal of this sensor is so small(about 100mv) that an amplifier maybe needed. The result can be sampled by Arduino and saved for analysis. The entire system has a high sensitivity, low power consumption and is very portable.SpecificationPower Supply:5V ...

Flame Sensor Module
Price: $3.45
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Elecrow Item #: EL-SPM01201S -

This Flame Sensor can be used to detect fire source or other light sources of the wave length in the range of 760nm - 1100 nm. It is based on the YG1006 sensor which is a high speed and high sensitive NPN silicon phototransistor. Due to its black epoxy, the sensor is sensitive to infrared radiation. In fire fighting robot game, the sensor plays a very important role, it can be used as a robot eyes to find the fire source. When detected the flame the Signal LED will on and the D0 output LOW...

Pulse Sensor
OOD!
Price: $22.12
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Elecrow Item #: EL-SO00837PS -

The Pulse Sensor is a plug-and-play heart-rate sensor for Arduino. It can be used by students, artists, athletes, makers, and game & mobile developers who want to easily incorporate live heart-rate data into their projects.Essence it is an integrated optical amplifying circuit and noise eliminating circuit sensor. Clip the Pulse Sensor to your earlobe or finger tip and plug it into your Arduino ,you can ready to read heart rate. Also it have an Arduino demo code that make it easy to use....

KA2284 Voltage Level Indicator
Price: $9.29
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Elecrow Item #: EL-SEL09020K -

Use this KA2284 Voltage level indicator to you next project. It can be used for battery power quantity indicator, Voltage indicator and Audio indicator. Specification Working voltage: 3.5V-12Vthe magnitude of the level can be adjusted;AC and DC signals can be controlled by jumper;PCB board Dimension: 29 (mm) x21 (mm); Wiki & External links KA2284 Datasheet ...

Photoresistance Sensor Module
Price: $4.67
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Elecrow Item #: EL-SEN00100L -

This Light sensor module uses a photodetectorGL5528 to detect the light intensity of the environment. As the resistance of the sensor varies depending on the amount of light it is exposed to, the output voltage changes with the ligth intensity.This module outputs both analog and digital signals, which can be used to trigger other modules.Also, the protentiometer can be used to adjust the sensitivety of digital output. The digital terminal output HIGH when the ligth intensity exceeds the value...

2 Channels IR Reflective Sensor(TCRT5000)
Price: $11.67
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Elecrow Item #: EL-SPS25003S -

This2 Channels IR Reflective Sensors(TCRT5000) includes 2 professional digital IR reflecitive sensors and a mainboard to handle the 2 channel signals. These sensors can detects tiny line and is suitable for line finder such as helping a robot car folllow a black line on white background or vice versa. You can also adjust the potentiometer on the mainboard with a crosshead screwdriver to adjust the measuring range.The infrared diode will emmitting the infrared continutelly when the module...

2-Axis Analog Gyro Module-ENC03
OOD!
Price: $34.77
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Elecrow Item #: EL-SENC032G -

This angular velocity sensor utilizes a Coriolis force that act on a vibrating object when an angular velocity is applied to it. The use of this unit simplifies equipment structure and circuit configuration, thus making it possible to provide outstanding performance. This module can be used for positional control and posture control of a moving object requiring precision and quick-response measurements. There is two ENC-03r senor on this module, provides 2-axis velocity with high speed, which...

3-Axis Analog Gyro Module-ENC03
OOD!
Price: $46.20
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Elecrow Item #: EL-SENC033G -

This angular velocity sensor utilizes a Coriolis force that act on a vibrating object when an angular velocity is applied to it. The use of this unit simplifies equipment structure and circuit configuration, thus making it possible to provide outstanding performance. This module can be used for positional control and posture control of a moving object requiring precision and quick-response measurements. There is three ENC-03r sensors on this module, provides 3-axis velocity with high speed,...

3-Axis Digital Accelerometer-ADXL346
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Price: $12.32
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Elecrow Item #: EL-SMO346ADXL -

The module is a simple breakout board that enables easy connection of an ADXL346 into an existing system. The ADXL346 is a small, thin, ultralow power, 3-axis accelerometer with high resolution (13-bit) measurement at up to ±16g, it is ideal for a wide variety of applications. Its output data is formatted as 16-bit twos complement and is accessible through either a SPI (3- or 4-wire) or I2C interface. The ADXL346 is well suited for mobile device applications. It measures the static...

4-Channel Capacitive Touch Module
Price: $11.62
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Elecrow Item #: EL-SCT2244PH -

This Capacitive Touch Module uses the touch-sensing IC TTP224 to add capacitive touch to your project . Just power with 2.4 to 5.5VDC and touch the pad to activate the sensor. These touch switches interface easily to any project - with or without a microcontroller. When a capacitive load (such as a human hand) is in close proximity to the sense-pad, the sensor detects the change in capacitance and activates the switch. Custom sense-pads can be made from nearly any conductive material and these...

5-Channel Flame Detector Module
OOD!
Price: $22.87
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Elecrow Item #: EL-SPH65201F -

Use this module to detect flame in large range( >120 degree). If you want you robot detect if there is any fire around, this module is just for you. It detects the fire with 5 flame sensors which are arranged with 30 degrees. This module outputs analog signal, which would be more precisely, and also digital signal which would be more easy to use, you can adjust the digital output sensitivety by the on-board potentiometer. The 5 LED indicators are helpful in your debugging, the high-precision...

AC Current Measurement Module - 50A Digital Output
OOD!
Price: $35.00
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Elecrow Item #: EL-SES40287S -

This is a current detection module, it can detect the Short circuit of the AC circuit. The Maximum Current detection of it is 50A and output digital signal.Features Dimensions: length 48mmX high 30mm wide 40mm Main chip: op amp, transformers Working voltage: DC5V Digital output The current detection range: AC Maximum 50A The current sense resistor resolution parameter settings can be changed The critical point set overcurrent signal is adjustable, set the resolution 0.3A With fixed mounting...

ACS712 Current Sensor- 20A
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Price: $9.29
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Elecrow Item #: EL-SEL71220A -

Sensing and controlling current flow is a fundamental requirement in a wide variety of applications including, over-current protection circuits, battery chargers, switching mode power supplies, digital watt meters, programmable current sources, etc. This ACS721 current module is based on ACS712 sensor, which can accurately detect AC or DC current. The maximum AC or DC that can be detected can reach 20A, and the present current signal can be read via analog I / O port of Arduino. There are also...

ACS712 Current Sensor- 30A
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Price: $9.29
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Elecrow Item #: EL-SEL71230A -

Sensing and controlling current flow is a fundamental requirement in a wide variety of applications including, over-current protection circuits, battery chargers, switching mode power supplies, digital watt meters, programmable current sources, etc. This ACS721 current module is based on ACS712 sensor, which can accurately detect AC or DC current. The maximum AC or DC that can be detected can reach 30A, and the present current signal can be read via analog I / O port of Arduino. There are also...

ACS712 Current Sensor- 5A
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Price: $9.29
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Elecrow Item #: EL-SEL7125A -

Sensing and controlling current flow is a fundamental requirement in a wide variety of applications including, over-current protection circuits, battery chargers, switching mode power supplies, digital watt meters, programmable current sources, etc. This ACS721 current module is based on ACS712 sensor, which can accurately detect AC or DC current. The maximum AC or DC that can be detected can reach 5A, and the present current signal can be read via analog I / O port of Arduino. There are also...

AD_DA Module - PCF8591
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Price: $8.12
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Elecrow Item #: EL-SOT00001A -

Have you ever wanted more analog input pins on your Arduino project, but not wanted to fork out for a Mega? Or would you like to generate analogue signals? It solves both these problems as it has a single DAC (digital to analogue) converter as well as four ADCs (analogue to digital converters), all accessible via the I2C bus. If the I2C bus is new to you, please familiarise yourself with the readings here before moving forward. This PCF8591 module operates on 3.3~5V,so can be used with an...

Adjustable Infrared Sensor Switch 3 - 50cm
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Price: $15.12
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Elecrow Item #: EL-SOD00350S -

This is an infrared distance switch. It has an adjustable detection ranging from 3cm to 50cm. It is small, easy to use/assemble, and inexpensive. Useful for robotics, interactive media, industrial assembly line, etc. Specification Power supply: 5VCurrent: 100mARange: 3-50cm adjustable Red: +5V Yellow: Signal Green: GNDWire length: 45cm ...

Analog Alcohol Sensor(MQ3)
Price: $13.98
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DFRobot Item #: SEN0128 -

The analog gas sensor - MQ3 is suitable for detecting alcohol, this sensor can be used in a Breathalyser.It has a high sensitivity to alcohol and small sensitivity to Benzine. The sensitivity can be adjusted by the potentiometer.     Specification Power supply needs: 5V Interface type: Analog Pin Definition:  1-Output  2-GND  3-VCC High sensitivity to alcohol and small sensitivity to Benzine Fast response and High sensitivity Stable and long life Simple drive...

Analog CO/Combustible Gas Sensor(MQ9)
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Price: $8.87
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Elecrow Item #: EL-SES90101S -

The Analog CO/Combustible Gas Sensor(MQ9) module is useful for gas leakage detecting, it used the sensitive material SnO2, which with lower conductivity in clean air. It make detection by method of cycle high and low temperature, and detect CO when low temperature (heated by 1.5V). The sensors conductivity is more higher along with the gas concentration rising. When high temperature (heated by 5.0V), it detects Methane, Propane etc combustible gas and cleans the other gases adsorbed under low...

Analog Gas Sensor
Price: $17.23
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DFRobot Item #: DFR0049 -

Analog Gas Sensor Introduction The gas sensor detects smoke, methane, carbon dioxide and other gases. It is able to give alarms when the smoke/gas leaks.  You can adjust the sensitivity with the potentiometer. Specification Type: Analog Detector: QM-NG1 Power supply needs: 5V Current: 100mA Pin Definition:  1-Output  2-GND  3-PWR  Document Datasheet Manual Shipping List Sensor (1 unit) Analog Sensor Cable (1 unit) (SKU:FIT0031) ...