
Adafruit

Adafruit HTU21D-F Temperature & Humidity Sensor Breakout Board
$14.90
The HTU21D-F Temperature + Humidity Sensor - the best way to accurately read both temperature and humidity. This I2C digital humidity sensor is an accurate and intelligent. 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 b...

Adafruit Liquid Flow Meter
$9.90
Measure liquid/water flow for your solar, computer cooling, or gardening project using this basic flow meter. This sensor sit in line with your water line, and uses a pinwheel sensor to measure how much liquid has moved through it. The pinwheel has a little magnet attached, and there's a hall effect magnetic sensor on the other side of the plast...
Adafruit PIR Motion Sensor

Adafruit PIR Motion Sensor
$9.90
PIR sensors are used to detect motion from pets/humanoids from about 20 feet away. This one has an adjustable delay before firing (approx 2-4 seconds), adjustable sensitivity and we include a 1 foot (30 cm) cable with a socket so you can easily re-position the sensor or mount it using the two drills on either side Runs on 5V-12V power (if you ne...

Adafruit 9-DOF Absolute Orientation IMU Fusion Breakout - BNO055
$34.90
Bosch is the first company to get this right by taking a MEMS accelerometer, magnetometer and gyroscope and putting them on a single die with a high speed ARM Cortex-M0 based processor to digest all the sensor data, abstract the sensor fusion and real time requirements away, and spit out data you can use in quaternions, Euler angles or vectors. ...
Water Solenoid Valve

Water Solenoid Valve
$7.49
Control the flow of fluid using the flow of electrons! This liquid valve would make a great addition to your robotic gardening project. There are two 1/2" (Nominal non-taped National Pipe) outlets. Normally, the valve is closed. When 12VDC is applied to the two terminals, the valve opens and water can push through. The valve has a gasket arrange...

Adafruit Ultimate GPS Breakout - 66 channel w/10 Hz updates - Version 3
$39.90
This GPS module is one of the best made so far. It comes with an array of features, includings: • -165 dBm sensitivity, 10 Hz updates, 66 channels • 5V friendly design and only 20mA current draw • Breadboard friendly + two mounting holes • RTC battery-compatible • Built-in datalogging • PPS output on fix • Internal patch antenna + u.FL connecto...

Adafruit Electret Microphone Amplifier with Adjustable Gain
$6.90
Add an ear to your project with this well-designed electret microphone amplifier. This is a fully assembled and tested board. For the amplification, Adafruit used the Maxim MAX4466, which is an op-amp. The amplifier has excellent power supply noise rejection, so this amplifier sound is clear and isn't nearly as noisy or scratchy as other mic am...

Adafruit AM2302 (wired DHT22) Temperature-Humidity Sensor
$14.95
The AM2302 is a basic, low-cost digital temperature and humidity sensor. 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. The only real downside of this sensor is y...

Adafruit DHT22 Temperature-humidity Sensor
$9.90
The DHT22 is a basic, low-cost digital temperature and humidity sensor. 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. The only real downside of this sensor is yo...

Adafruit BMP280 I2C or SPI Barometric Pressure and Altitude Sensor
$9.90
Bosch has stepped up their game with their new BMP280 sensor, an environmental sensor with temperature, barometric pressure that is the next generation upgrade to the BMP085/BMP180/BMP183. This sensor is great for all sorts of weather sensing and can even be used in both I2C and SPI. For simple easy wiring, go with I2C. If you want to connect a ...

Adafruit Membrane 1x4 Keypad + Extras
$2.90
This keypad has 4 buttons, and since every key has its own wire line, no matrix code is required - just treat these like every day switches. The membrane is soft and has a removable paper backing to expose a strong adhesive so you can stick this on an enclosure and feed the cable through a slot. Its a simple keypad but that's why we like it.

Adafruit Electret Microphone Amplifier - MAX9814 with Auto Gain Control
$7.90
Add an ear to your project with this well-designed electret microphone amplifier with AGC. This fully assembled and tested board comes with a 20-20KHz electret microphone soldered on. For the amplification, the Maxim MAX9814, a specialty chip that is designed for amplifying electret microphones in situations where the loudness of the audio isn't...