10 DOF IMU Sensor (B), Inertial Measurement Unit, Lower Power Consumption
SparkFun SEN-10736 - 9 Degrees of Freedom - Razor IMU, 28mm x 41mm, RoHS
SEN-12636 - 9 Degrees of Freedom IMU Breakout - LSM9DS0
Liquid Flow Meter - Plastic 1/2" NPT Threaded, RoHS
MEMS accelerometer, magnetometer and gyroscope on a single die with a high speed ARM Cortex-M0 based processor
MMA8451 Triple-Axis Accelerometer w/ 14-bit ADC, detects motion, tilt and basic orientation, wide usage range: from +-2g up to +-8g, easy to use with Arduino or another microcontroller. Adafruit 2019.
TSL2561 luminosity sensor is an advanced digital light sensor, ideal for use in a wide range of light situations. Compared to low cost CdS cells, this sensor is more precise, allowing for exact lux calculations and can be configured for different gain/timing ranges to detect light ranges from up to 0.1 - 40,000+ Lux on the fly. Adafruit 439
Great way to upgrade a project that uses a photocell and needs RoHS compliance. Due to the high rejection ratio of infrared radiation, the spectral response of the ambient light sensor is close to that of human eyes. Adafruit 2748
V4 features the same sensors as v3 (L3GD20H, LSM303D) and adds an LPS25H digital barometer. An I²C interface accesses 10 independent measurements that can be used to calculate the sensor’s altitude and absolute orientation.
Inertial measurement unit (IMU) and altimeter that features the same LSM6DS33 gyro and accelerometer and LIS3MDL magnetometer as the MinIMU-9 v5, and adds an LPS25H digital barometer. Pololu 2739
Analog pH Meter Pro (SEN0169)
This V2 Rotation Sensor is arduino compatible multi-ring rotation sensor. It is based on multi-turn precision potentiometer. It can rotate upto 10 laps. DFR0058
Precision sensor from Bosch for measuring humidity with ±3% accuracy, barometric pressure with ±1 hPa absolute accuraccy, and temperature with ±1.0°C accuracy Adafruit 2652