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3674-POLOLU, Right Bumper Switch Assembly for Romi/TI-RSLK MAX (Through-Hole Pins Soldered)
US$9.05
The 3674-POLOLU is a bump sensor for the Romi or TI-RSLK MAX robots. It uses six snap-action switches to determine if there's an obstacle on its way or not.
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37 Modules Sensor Kit V2.0 for Raspberry Pi 4B 3B+ 3B 2B B+ A+ Zero Model
US$118.25
The SunFounder Sensor Kit is a learning kit of 37 sensor modules for Raspberry Pi(Compatible with RPi 4B/3B/3B+/2B/B+, Pi is NOT included), suitable for beginners and anyone who enjoys programming toys. It comes with the easy-to-use visual programming language software Dragit, making coding fun and easy to learn. The 37 sensor modules formulate 35 lessons that present your various functions and interesting projects. Use the SunFounder Sensor Kit to start your journey of making and exploring interesting and useful projects.
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Sensor Kit
37 Piece Sensor Kit for Arduino
US$49.95

This Sensor Kit for Arduino includes 37 popular sensors in a sturdy plastic case.

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3709-ADA Adafruit SGP30 Air Quality Sensor Breakout - VOC and eCO2
US$30.95
Breathe easy with the SGP30 Multi-Pixel Gas Sensor, a fully integrated MOX gas sensor. This is a very fine air quality sensor from the sensor experts at Sensirion, with I2C interfacing and fully calibrated output signals with a typical accuracy of 15% within measured values. The SGP combines multiple metal-oxide sensing elements on one chip to provide more detailed air quality signals. This is a gas sensor that can detect a wide range of Volatile Organic Compounds (VOCs) and H2 and is intended for indoor air quality monitoring. When connected to your microcontroller (running our library code) it will return a Total Volatile Organic Compound (TVOC) reading and an equivalent carbon dioxide reading (eCO2) over I2C.
Delivery within 2-3 weeks
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372 10K Precision Epoxy Thermistor - 3950 NTC
372 10K Precision Epoxy Thermistor - 3950 NTC
US$7.00

This epoxy-coated precision 1% 10K thermistor is an inexpensive way to measure temperature in weather or liquids.

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374-ADA DS18B20 Digital temperature sensor + extras
374-ADA DS18B20 Digital temperature sensor + extras
US$7.00
These 1-wire digital temperature sensors are fairly precise (±0.5°C over much of the range) and can give up to 12 bits of precision from the onboard digital-to-analog converter.
Delivery within 2-3 weeks
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381-ADA Waterproof DS18B20 Digital temperature sensor + extras
381-ADA Waterproof DS18B20 Digital temperature sensor + extras
US$17.42
This is a pre-wired and waterproofed version of the DS18B20 sensor. Handy for when you need to measure something far away, or in wet conditions. While the sensor is good up to 125°C the cable is jacketed in PVC so we suggest keeping it under 100°C.
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385 DHT22 temperature-humidity sensor + extras
385 DHT22 temperature-humidity sensor + extras
US$21.88
It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). Its fairly simple to use, but requires careful timing to grab data.
Delivery within 2-3 weeks
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386 DHT11 basic temperature-humidity sensor + extras
386 DHT11 basic temperature-humidity sensor + extras
US$8.75
It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). Its fairly simple to use, but requires careful timing to grab data.
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3893-ADA JST PH 3-Pin to Male Header Cable - 200mm
US$1.93
This cable will let you turn a JST PH 3-pin cable port into 3 individual wires with high-quality 0.1" male header plugs on the end. Great for extending and connecting sensors.
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3894-ADA JST PH 3-Pin to Female Socket Cable - 200mm
US$1.93
This cable will let you turn a JST PH 3-pin cable port into 3 individual wires with high-quality 0.1" female header sockets on the end. Great for extending or connecting sensors.
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4 CHANNEL IR LINE TRACKER SENSOR
US$4.09
Following a line is one of the easiest ways for a robot to successfully and accurately navigate. The 4-Channel Line Tracker sensor provides an easy way for line tracking. A line sensor is composed of a number of cells and each cell is composed of a sender and a receiver. The particularity of this sender/receiver pair is that it sends light that is reflected by the line to be detected but not by the eventually opaque background surrounding this line. Any sender/receiver pair that is able to make a difference between a line and the rest of ground (of a different color) can be used in a line sensor.
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4101-POLOLU QTR-HD-01RC Reflectance Sensor: 1-Channel, 5mm Wide, RC Output
US$2.51
This IR LED/phototransistor pair is great for precisely identifying changes in reflectance (like line detection). It operates from 2.9 V to 5.5 V and offers dimmable brightness control independent of the supply voltage. In general, the closer the object, the higher the contrast between light and dark readings, but high-reflectance objects are generally detectable out to around 30 mm. This version features a traditional-style QTR sensor without lenses.
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4102-POLOLU QTR-HD-02RC Reflectance Sensor Array: 2-Channel, 4mm Pitch, RC Output
US$2.97
This array of IR LED/phototransistor pairs is great for precisely identifying changes in reflectance (like line detection). It operates from 2.9 V to 5.5 V and offers dimmable brightness control independent of the supply voltage. In general, the closer the object, the higher the contrast between light and dark readings, but high-reflectance objects are generally detectable out to around 30 mm. This version features the traditional-style QTR sensors without lenses.
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4103-POLOLU QTR-HD-03RC Reflectance Sensor Array: 3-Channel, 4mm Pitch, RC Output
US$3.77
This array of IR LED/phototransistor pairs is great for precisely identifying changes in reflectance (like line detection). It operates from 2.9 V to 5.5 V and offers dimmable brightness control independent of the supply voltage. In general, the closer the object, the higher the contrast between light and dark readings, but high-reflectance objects are generally detectable out to around 30 mm. This version features the traditional-style QTR sensors without lenses.
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