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It's summer and you're sweating and your hair's all frizzy and all you really want to know is why the weatherman said this morning that today's relative humidity would max out at a perfectly reasonable 52% when it feels more like 77%. Enter the HTU21D-F Temperature + Humidity Sensor - the best way to prove the weatherman wrong!
This I2C digital humidity sensor is an accurate and intelligent alternative to the much simpler Humidity and Temperature Sensor - SHT15 Breakout It has a typical accuracy of ±2% with an operating range that's optimized from 5% to 95% RH. Operation outside this range is still possible - just the accuracy might drop a bit. The temperature output has an accuracy of ±1°C from -30~90°C. If you're looking to measure temperature more accurately, we recommend the MCP9808 High Accuracy I2C Temperature Sensor Breakout Board.
Such a lovely chip - so we spun up a breakout board that includes the Filtered version (the white bit of plastic which is a PTFE filter to keep the sensor clean), a 3.3V regulator and I2C level shifting circuitry. This lets you use it safely with any kind of microcontroller with 3.3V-5V power or logic. Each order comes with one fully assembled and tested PCB breakout and a small piece of header. You'll need to solder the header onto the PCB but it's fairly easy and takes only a few minutes even for a beginner.
The X-Band Motion Detector operates in the X-band frequency, at 10.525 GHz and indicates detected mo..
It is designed to be submersible in water, but it's always best to avoid long-term (over 1 hour at ..
These sensors are easy to use, they are basically resistors that change value based on how much thei..
The Sharp distance sensors are a popular choice for many projects that require accurate dis..
The QTR-3A reflectance sensor array is intended as a line sensor, but it can ..
The GP2Y0A60SZ distance sensor from Sharp offers a wide detection range of 4″ to 60″ (10 cm to ..
This methane gas sensor detects the concentration of methane gas in the air and ouputs its ..
The "poor man's" accelerometer/motion sensor! These spring-vibration switches are medium sensitivity..
This compact sonar range finder by Maxbotix detects objects from 0 to 6.45 m (21.2 ft) wit..
Using the MaKey MaKey you can make anything into a key (get it?) just by connecting a few alligator ..
This board is a compact (0.4″ × 0.9″) breakout board for ST’s LSM6DS33 inertial module, which featur..
This sensor can detect flexing or bending in one direction. They were popularized by being used in t..
This force-sensing resistor (FSR) from Interlink Electronics is a passive component that acts as a v..
Take your project portable with the included battery pack and stitch it into a final design with con..
These spring-vibration switches are high sensitivity non-directional vibration induced trigger switc..
Decode nearly any kind of 1D (striped) barcode in your project using this adorable compact barcode s..
An anemometer is a device used for measuring wind speed, and is a common weather station instrument...
The AM2302 is a wired version of the DHT22, in a large plastic body. It is a basic, low-cost digital..
This current sensor is a carrier board or breakout board for Allegro’s ACS711KLCTR-25AB-T Hall effec..
The eTape Liquid Level Sensor is a solid-state sensor with a resistive output that varies with the l..
This board is a compact (0.5″ × 0.9″) breakout board for ST’s L3GD20 three-axis digital-..
This is a bare wires bead-probe which can measure air or surface temperatures. Most inexpensive the..
DescriptionThe eTape Liquid Level Sensor is a solid-state sensor with a resistive output that varies..
For specific temperature-to-resistance, check the lookup table.
These are often ..
Description: A simple flex sensor 4.5" in length. As the sensor is flexed, the resistance acros..
These pressures can easily be converted to altitudes. The board has a 3.3 V linear regulator and int..
The Sensor Film Kit is a great new way to make custom-sized sensors out of force sensitive material...
Triple-axis analog accelerometer - for measuring motion and tilt
Force sensitive r..
The Leap Motion Controller is a fascinating new computer sensor that uses multiple cameras and IR li..
We've now got a wider range version of favorite triple-axis accelerometer - it even has an on-board ..
This current sensor is a carrier board or breakout board for Allegro’s ACS709LLFTR-35BB-T..
This current sensor is a carrier board or breakout board for Allegro’s ACS711KLCTR-12AB-T Hall effec..
Put a current meter anywhere with this very handy display. This panel meter requires a DC voltage to..
These lightweight brackets are made from 0.8mm-thick aluminum and are specifically designed to work ..
The pre-programmed Touch Board is Arduino-at-Heart, so your Arduino shields and code will work seeml..
Connect to any microcontroller or system with TTL serial, and send packets of data to take photos, ..
This flammable gas and smoke sensor detects the concentrations of combustible gas in the ai..
New! Version 3 comes with the latest module which has external antenna support and Pulse-Per-Second ..
This GPS shield works great with either UNO or Leonardo Arduinos and is designed to log data to an S..
Pulse Sensor Amped adds amplification and noise cancellation circuitry to the hardware. It's noticea..
The pre-installed filter (also sold separately if you want to convert your own camera) allows you t..
This kit includes two dual-channel Hall Effect sensor boards and two 6-pole magnetic discs that can ..
This set includes sensor boards and reflective wheels to add quadrature encoding to two mic..
Detects a wide range of colors and outputs data as 10-bit RGB (Red/Green/Blue) componen..
This Photo Transistor Light Sensor is a simple sensor that detects ambient light. It's kind of the o..
The Pixy CMUCam 5 is an image sensor with a powerful processor that you can program to only send the..
The Pololu QTR-1RC reflectance sensor carries a single infrared (IR) LED an..
The QTR-3RC reflectance sensor array is intended as a line sensor, but it ca..
Operating Voltage: 2.5 V to 5.5 V
Carrier Frequency: 38 kHz
Runs on 5V-16V power (if you need to run it off of 3V you can do that by bypassing the regulator, bu..
These spring-vibration switches are high sensitivity non-directional vibration induced trigger swit..
This is a pre-wired and waterproofed version of the DS18B20 sensor made with a PTFE wire cable. Hand..
The MLX90614 family of sensors use infrared thermopile detectors to determine the temperature of obj..
Wide range, low power temperature sensor outputs an analog voltage that is proportional to the ambie..
Note: This sensor needs a 4.7K ohm pull-up resistor. Make sure you have one in hand...
Description: The SparkFun Soil Moisture Sensor is a simple breakout for measuring the moisture ..
Description: Piezo elements come in handy when you need to detect vibration or a knock. You can..
Description: This basic piezo sensor from Measurement Specialties is often used for flex, touch..
1x Getting Started with Adafruit FLORA book
1x FLORA - Wearable electronic p..
This pressure sensor from Freescale is a great low-cost sensing solution for precision measurement o..
This pressure transducer has a range of 0 - 500 PSI (1723.69 kPa) and an accuracy..
This pressure transducer has a range of 0 - 10000 PSI (1723.69 kPa) and an a..
Description: A simple flex sensor 2.2" in length. As the sensor is flexed, the resistance acros..
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