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1-Axis Analog Gyro Module-ENC03
Price: $14.83
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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...

2 Channels IR Reflective Sensor(TCRT5000)
Price: $10.76
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Elecrow Item #: EL-SPS25003S -

Description 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...

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...

2-Channels Opto Sensor
Price: $12.25
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Elecrow Item #: EL-SPS21211S -

Description This 2-Channels Opto Sensor is consist of 3 parts: 2 opto-emitters and receivers, one PCBA to adjust the sensitivity and map out the signal. With this sensor, you can measure if there are the objects in the measuring range, eapacilly useful in applications that you need to monitor the inputs&outputs of a system. When the opto sensor didn't covered , the D0 output logic LOW, the signal indicate LED light, when the opto sensor covered, the D0 output logic HIGH and the LED off,...

3 Axis Digital Accelerometer - ADXL345
Price: $6.62
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Elecrow Item #: EL-SMS33451S -

This ADXL345 module is low power consumption and a 3-axis accelerometer, it communicate with MCU with I2C or SPI communication with user selectable sensitivity and 10-13 bit resolution. The ADXL345 is well suited to measure the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion or shock. Its high resolution (4 mg/LSB) enables measurement of inclination changes less than 1.0?. Several special sensing functions are provided....

3 Axis Gyro-L3G4200D
Price: $22.71
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Elecrow Item #: EL-SMS34200D -

    This is a breakout board for the L3G4200D. the L3G4200D is a low-power three-axis angular rate sensor able to provide unprecedented stablility of zero rate level and sensitivity over temperature and time. It includes a sensing element and an IC interface capable of providing the measured angular rate to the external world through a digital interface (I2C/SPI).     The L3G4200D has a full scale of +/-250 / +/-500 / +/-2000 dps and is capable of...

3-Axis MEMS Accelerometer - MMA8452Q
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Price: $3.40
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Sparkfun Item #: COM-10953 -

"The MMA8452Q is a smart low-power, three-axis, capacitive MEMS accelerometer with 12 bits of resolution. This accelerometer is packed with embedded functions with flexible user programmable options, configurable to two interrupt pins. Embedded interrupt functions allow for overall power savings relieving the host processor from continuously polling data. The MMA8452Q has user selectable full scales of ±2g/±4g/±8g with high pass filtered data as well as non filtered data...

3W mini audio stereo amplifier
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Price: $10.17
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DFRobot Item #: DFR0119 -

This is a mini stereo amplifier. It is a fully functional, two-channel audio amplifier, with an integrated sleep mode function. You can disable it on your sketch if you are not using it or not needed by connecting the sleep pin on your board. It&;lsquo;s specially good for some DIY project.|Specification| Power Supply: DC 3.6-5.5V (DO NOT apply over 5.5V, it damage the chip presently) Output power: 3w+3w (4 ohms) Efficiency: &;gt;90% Size: 15.5*24mm (0.6*0.94&;#39;&;#39;)|Documents| Wiki Doc...

4 Channels IR Reflective Sensor
Price: $11.59
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Elecrow Item #: EL-SPS40201S -

Description This 4 channels IR reflective sensor includes 4 IR sensors and mainboard to handle all the signals. Each IR reflective sensor is composed of an IR emitter and a receiver, if something is in the measuring range, the sensor would outputs related signal. There are also 4 potentiometers on the mainboard so that the measuring range can be adjusted as you wish. Application Idea Smart car; Line and edge following; omni-directional detecting; On-board indicator; Specification Supply...

4MM Inductive Metal Proximity Sensor
Price: $12.35
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Elecrow Item #: EL-SPM0409IP -

        Metal Proximity Sensor, which is also called non-contact proximity switch, it is composed of generator and shaping amplifier oscillator vibration in the switch after induction head, and produces an alternating magnetic field when the metal body detected.         This Inductive Proximity Sensor has high sensitivity, fast frequency response, high repeat positioning accuracy and also stability and reliable, it can detects metal components in 0~4mm...

50gm Polymorph Moldable Plastic
Price: $5.75
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MK-Misc Item #: polymorph -

50gm Polymorph Moldable Plastic Polymorph is a plastic that melts at around 60 degrees Celsius and becomes mouldable and easily shaped. All you need to do is pop some of the granules into hot water or heat them with a hair dryer and once they reach 60 degree you can shape them easily with your hands or put it into a mould ready to make complex shapes. If you make a mistake just put it back into the water and start again. This stuff really changed the way we tinkered and has been a life saver...

6 DOF Sensor - MPU6050
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Price: $17.07
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DFRobot Item #: SEN0142 -

At the beginning, the inertial measurement unit is an electronic device that measures and reports on a craft's velocity, orientation, and gravitational forces, using a combination of accelerators, gyroscopes, and magnetometers. Now IMUs are commonly used in the Human-computer interaction(HCI), navigational purposes and balancing technology used in the Segway Personal Transporter as we all known. The MPU-6000/MPU-6050 family of parts are the world’s first and only 6-axis MotionTracking...

6xAA  Battery Holder(double layer)
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Price: $2.15
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DFRobot Item #: FIT0078 -

This battery holder can hold 6 AA battery which can make 7.2 V rechargeable battery pack from NiMH / NiCd cells or 9V battery pack from alkaline cells.It comes with a 6" Red & Black Wires with side by side & stack connection. |Specification| Cell Quantity: 6 Battery type: AA Storage temperature: 25&;#39;C (77F, RoomTemperature) Max Operate temperature: 80&;#39;C (176F)|ShippingList| 6xAA battery holder (double layer) x1 ...

80cm Infrared Proximity Sensor-GP2Y0A21YK0F
Price: $21.09
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Elecrow Item #: EL-SPGP2YIP -

    The Sharp distance sensors are a popular choice for many projects that require accurate distance measurements. This IR sensor is more economical than sonar rangefinders, yet it provides much better performance than other IR alternatives. Interfacing to most microcontrollers is straightforward: the single analog output can be connected to an analog-to-digital converter for taking distance measurements, or the output can be connected to a comparator for threshold...

9 Degrees of Freedom - MPU-9150 Breakout
Price: $40.19
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Sparkfun Item #: SEN-11486 -

9 Degrees of Freedom - MPU-9150 Breakout Description: The MPU-9150 is the world’s first 9-axis MotionTracking device designed for the low power, low cost, and high performance requirements of consumer electronics equipment including smartphones, tablets and wearable sensors. And guess what? You get to play with it. This breakout board makes it easy to prototype with the InvenSense MPU-9150 by breaking out all the pins you need to standard 0.1" spaced headers. The board...

9V to Barrel Jack Adapter
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Price: $2.59
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DFRobot Item #: FIT0131 -

This simple cable has so many uses! Plug a 9V battery into one end and connect the other end to anything with a 5.5x2.1mm, center-positive barrel jack.Use this cable to battery-power any device that needs 9V and has an on-board barrel jack - it works great for Arduinos, development boards, evaluation boards, and more!|ShippingList| ?9V to Barrel Jack Adapter x1

AD_DA Module - PCF8591
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
Price: $12.91
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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 ...

Adjustable Infrared Sensor Switch 3 - 80cm
Price: $14.86
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Elecrow Item #: EL-SOD00380S -

    This is an infrared distance switch. It has an adjustable detection ranging from 3cm to 80cm. It is small, easy to use/assemble, and inexpensive. Useful for robotics, interactive media, industrial assembly line, etc. Specification Power supply: 5V Current: 100mA Range: 3-80cm adjustable Red: +5V Yellow: Signal Black: GND Wire length: 20cm Wiki & External links Manual/Wiki ...

Alcohol Gas Sensor - MQ-3
Price: $6.38
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Sparkfun Item #: SEN-08880 -

"This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration. The drive circuit is very simple, all it needs is one resistor. A simple interface could be a 0-3.3V ADC. Please review the datasheet for conversions to ppm then Wikipedia.org for BAC. Features: 5V DC or AC circuit Requires heater voltage Operation...

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) ...

Arduino Female  Header-8 Pins- 10 Pcs
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Price: $3.28
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DFRobot Item #: FIT0104 -

This is a 8-pin female header which is used on Arduino board. |ShippingList| 8 Pin Header x10

AttoPilot Voltage and Current Sense Breakout - 180A
Price: $28.59
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Sparkfun Item #: SEN-10644 -

"This is a small voltage and current sense PCB. DC current is determined by measuring a voltage drop across a pair of parallel shunt resistors, then converted to a final analog voltage output by the TI INA-169. Voltage sense is accomplished by scaling to 3.3V ADC range by a precision resistor divider. The PCB is supplied without leads or connectors. The pad sizes are large enough to accommodate 12 gauge heavy duty leads (see datasheet) but care must be exercised in soldering. Smaller gauge...

AttoPilot Voltage and Current Sense Breakout - 45A
Price: $28.59
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Sparkfun Item #: SEN-10643 -

"This is a small voltage and current sense PCB. DC current is determined by measuring a voltage drop across a pair of parallel shunt resistors, then converted to a final analog voltage output by the TI INA-169. Voltage sense is accomplished by scaling to 3.3V ADC range by a precision resistor divider. The PCB is supplied without leads or connectors. The pad sizes are large enough to accommodate 12 gauge heavy duty leads (see datasheet) but care must be exercised in soldering. Smaller gauge...

AttoPilot Voltage and Current Sense Breakout - 90A
Price: $28.59
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Sparkfun Item #: SEN-09028 -

"This is a small voltage and current sense PCB. DC current is determined by measuring a voltage drop across a pair of parallel 1 mOhm shunt resistors, then converted to a final analog voltage output by the TI INA-169. Voltage sense is accomplished by scaling to 3.3V ADC range by a precision resistor divider. The PCB is supplied without leads or connectors. The pad sizes are large enough to accommodate 12 gauge heavy duty leads (see datasheet) but care must be exercised in soldering. Smaller...

Bare Conductive Pi Cap
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Price: $59.57
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Sparkfun Item #: DEV-14065 -

"This is the Bare Conductive Pi Cap, a small, shield-like device that adds precise capacitive touch, distance sensing and high-quality audio to your Raspberry Pi A+, B+, Zero and later (any Raspberry Pi with a 40-pin GPIO connector). Connect Electric Paint or anything conductive to one of the 12 electrodes to control sounds, video and more. Connecting the physical world to the digital world is easy with Bare Conductive’s fully featured libraries and extensive online tutorials. The Pi Cap...

Bare Conductive Printed Sensors (3 pack)
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Price: $22.13
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Sparkfun Item #: SEN-14696 -

"Save time with ready-to-use touch and distance sensors, printed with a unique pattern. Bare Conductive has created intricate patterns on this three-pack of Printed Sensors for you to use in touch and proximity sensing projects. They’re perfect for testing your ideas quickly, without needing time to design your own pattern, or waiting for Electric Paint to dry! Just like other conductive paint tools and accessories, you will be able to customize and hack the printed sensors to make them...

Bare Conductive Touch Board Pro Kit
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Price: $272.32
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Sparkfun Item #: KIT-14533 -

"No longer do you need to worry about what supplies to purchase to prepare for your next electric paint project. The Touch Board Pro Kit from Bare Conductive includes the tools you need to prototype and make everything from interactive wallpaper and talking murals to innovative musical instruments. Bare Conductive’s Electric Paint is just like any other water-based paint…except that it’s electrically conductive! This means that you can actually paint wires onto things like...

Barometer Sensor
Price: $32.77
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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. Features Wide pressure range Arduino/Crowduino compatible interface (3.3V...

Barometric Pressure Sensor - BMP085 Breakout
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Price: $17.93
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Sparkfun Item #: SEN-11282 -

Barometric Pressure Sensor - BMP085 Breakout Description: This is a breakout board for the Bosch BMP085 high-precision, low-power digital barometer. The BMP085 offers a measuring range of 300 to 1100 hPa with an accuracy down to 0.2 hPa in ultra-high resolution mode. It's based on piezo-resistive technology for high accuracy, ruggedness and long term stability. These come factory-calibrated, with the calibration coefficients already stored in ROM. Writing your own code for it requires...

Biomedical Sensor Pad (10 pack)
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Price: $9.36
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Sparkfun Item #: SEN-12969 -

"This is a 10 pack of Biomedical Sensor Pads, disposable electrodes that can be used to measure EEG, ECG and EMG levels. these little pads are perfect for short-term monitoring of Neurofeedback and Biofeedback purposes. They are to be used once and are very handy because of integrated, latex-free gel. Each pad adheres very well to the skin and the snap connector can be pushed on or removed from the electrode lead with no issue. Note: This product is NOT a medical device and is not intended to...

BITalino (r)evolution Board Kit
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Price: $323.38
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Sparkfun Item #: DEV-14022 -

"This is the BITalino ( r )evolution Board Kit, a (comparatively) low-cost biomedical data acquisition dev board that allows you to create projects using physiological sensors and tools. Each BITalino is presented in a “ProtoSnap style,” enabling it to be programmed as a whole board or snapped apart for use in future projects. This dev board also has no shortage of programming APIs, which include Arduino, Python, Java, Android, iOS and more. The BITalino is equipped with 14...

Bone Conduction Kit
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Price: $42.23
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DFRobot Item #: KIT0126 -

Bone conduction is a way of sound transmission. The sound is converted into different frequencies of mechanical vibration, and transmitted through human skull, bone labyrinth, inner ear lymphatic transmission, helix, auditory nerve, auditory center.Bone conduction headphonesThis kit is composed by a bone conduction speaker, a speaker driver board and other kinds of accessories. This kit is intended to help understand the principles of bone conduction technology, making hearing aids or bone...

Breadboard Power Supply 5V/3.3V
Price: $7.84
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DFRobot Item #: DFR0140 -

This is a very simple board that takes a 6-12V input voltage and outputs a selectable 5V or 3.3V regulated voltage. All headers are 0.1" pitch for simple insertion into a breadboard. It can be either powered from 6-12 DC2.1 power jack or from USB power.  The maximum current it can provide is 500mA.  Specification Input voltage: 6-12V (Power Jack) 5V (USB) Output voltage:3.3V/5V Output current:500mA On/Off switch Power status LED Pin Head 5/3.3V output Central positive DC2.1 power...

Breakout Board for SC16IS750 I2C-SPI-to-UART IC
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Price: $17.97
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Sparkfun Item #: BOB-09981 -

Breakout Board for SC16IS750 I2C/SPI-to-UART IC Description: This is a breakout board for the SC16IS750, a handy chip used to convert I2C or SPI serial signals to a single-channel, high-performance UART. As an application example: we use this chip on our WiFly Shield to allow an Arduino to communicate with the WiFly RN-131G module - which is normally controlled via a UART - using an SPI interface. This allows for greater communication speeds and frees up the Arduino's UART for...

Bus Pirate
Price: $34.44
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Sparkfun Item #: TOL-09544 -

Bus Pirate Description: The Bus Pirate, created by Ian Lesnet and featured on Hack a Day, is a troubleshooting tool that communicates between a PC and any embedded device over most standard serial protocols, which include I2C, SPI, and asynchronous serial - all at voltages from 0-5.5VDC. This product eliminates a ton of early prototyping effort when working with new or unknown chips. Working with the Bus Pirate is simple and effective - type commands into a terminal on your computer, those...

Cable for Shiftout
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Price: $4.48
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DFRobot Item #: FIT0077 -

This cable is especially designed for Interface shield,shift out module, SPI Led and SPI LCD module. It is has a female 2&;times;3 IDC connector on each end that is designed to plug into a 0.100" (2.54 mm) 2&;times;3 shrouded box header. |Specification| Length:20cm (7.9&;#39;&;#39;) Female/Femal, IDC 2x3 Connector|ShippingList| Cable for Shiftout x1

Capacitive Touch Kit For Arduino
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Price: $33.62
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DFRobot Item #: DFR0129 -

Now, it is time to add a more fancy interactive way to your project. This DFRobot touch kit comes with three types touch sensors. An ipod styple wheel touch, a keypad touch which supports backlit and a grid touch pad which can recoginze something unique. This kit utilizes the not very "latest" capactive touch technology which make the sensing very sensitive. The kit is designed to be compatible with Arduino. Get Started with Capacitive Touch Kit Tutorial|Specification| Operation Voltage:5V...

Carbon Monoxide Sensor - MQ-7
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Price: $8.94
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Sparkfun Item #: SEN-09403 -

"This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm. This sensor has a high sensitivity and fast response time. The sensor’s output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC. This sensor comes in a package similar to our MQ-3 alcohol sensor,...

CMOS Camera Module - 728x488
Price: $40.00
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Sparkfun Item #: SEN-11745 -

"This is a high-quality color CMOS camera module. Power the CM-32 module, hook up any display, monitor, or LCD screen with an RCA input and get vivid color video at 728x488 resolution. Module is easily mountable and has a wide operating voltage (6V to 20V). Comes with high quality optics, all the on board circuitry to output RCA signal, and cable harness. Features: 728 x 488 Resolution 6V to 20V input 50mA (at 12V) Documents: Datasheet " ...

Cross Laser Emitter
Price: $4.62
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Elecrow Item #: EL-TEL2564L -

Such a little Laser emitter module is popular used in teaching, horizontal measurement and so on, the laser effective transmission distance can be upto 1km when drive current is 20 mA There are also laser emitters with dot spot or line sport.SpecificationDiameter: 9mmMax power: 50 mW Life: >1,000 hCurrent&Voltage: 20mA@3VSpot: Cross ...

Devicter Sensor Node V4 (ATmega 328)
Price: $56.24
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Elecrow Item #: EL-CDD13497DD -

    devDuino Sensor Node v4 is a compact Arduino-compatible microcontroller and is designed to build wireless networks based on transceiver nRF24L01+. You can easily connect other sensors or actuators to this platform, to build your remote monitoring or controlling system. Unlike the version 1,2,3 is on board built-in sensor temperature and humidity. Features Built on Arduino-compatible architecture Clock frequency - 16MHz (may be reduced to reduce energy consumption by up...

DHT11 Temperature & Humidity Sensor
Price: $4.14
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Elecrow Item #: EL-STH01101S -

    This DHT11 Temperature & Humidity Sensor features a temperature & humidity sensor complex with a calibrated digital signal output. By using the exclusive digital-signal-acquisition technique and temperature & humidity sensing technology, it ensures high reliability and excellent long-term stability. This sensor includes a resistive-type humidity measurement component and an NTC temperature measurement component, and connects to a high-performance 8-bit...

DHT11 Temperature and Humidity Sensor
Price: $8.96
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DFRobot Item #: DFR0067 -

DHT11 Temperature and Humidity Sensor This DHT11 Temperature and Humidity Sensor features a calibrated digital signal output with the temperature and humidity sensor complex. Its technology ensures the high reliability and excellent long-term stability. A high-performance 8-bit microcontroller is connected. This sensor includes a resistive element and a sense of wet NTC temperature measuring devices. It has excellent quality, fast response, anti-interference ability and high cost performance...

DHT22 Temperature and Humidity Sensor
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Price: $16.38
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DFRobot Item #: SEN0137 -

DHT22 capacitive humidity sensing digital temperature and humidity module is one that contains the compound has been calibrated digital signal output of the temperature and humidity sensors. Application of a dedicated digital modules collection technology and the temperature and humidity sensing technology, to ensure that the product has high reliability and excellent long-term stability.The sensor includes a capacitive sensor wet components and a high-precision temperature measurement...

Digital Light Sensor - BH1750FVI
Price: $6.62
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Elecrow Item #: EL-SLS01011S -

    This is a BH1750FVI light intensity sensor module with built-in a 16 bit AD converter generating digital signal. The data from this module is light intensity in lx (lux meter). It communicate with micro-controller board through I2C bus. Features working Voltage: 3.3V~6V I2C bus Interface with 2 alternative address (f/s Mode Support) Spectral responsibility is approximately human eye response Wide range and High resolution (1 ~ 65535 lx) Light source dependency is...

Digital Temperature &; humidity sensor (With Stainless Steel Probe)
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Price: $50.85
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DFRobot Item #: SEN0148 -

This is an anti-rust, robust and precise SHT10 sensor, which can master enterprise-class and industrial-level applications. It can be applied in various fields: telepoint base stations, electronic control cabinet, production site, storehouse, machine rooms, greenhouses, animal farming, medicine stock and etc. Metallic package enables it to deal with the very dusty or other severe circumstance. the wall-hanging style makes it easy to install. The metallic mesh covering the sensor adopts method...

Dot Laser Emitter
Price: $4.62
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Elecrow Item #: EL-TEL2565L -

Such a little Laser emitter module is popular used in teaching, horizontal measurement and so on, the laser effective transmission distance can be upto 1km when drive current is 20 mA There are also laser emitters with cross spot or line sport.SpecificationDiameter: 9mmWavelength: 650nm Max power: 50 mW Life: >1,000 hCurrent&Voltage: 20mA@3VSpot: Dot , Φ10mm~Φ15 mm @ 15M ...