The Parallax ColorPAL is a miniature color and light sensor which uses an RGB LED to detect and generate light for color sensing.
When the QTI sensor is over a dark surface, the reflectivity is very low; when the QTI is over a light surface, the reflectivity is very high and will cause a different reading from the sensor.
The DE-ACCM5G is an off the shelf 2 axis 5g accelerometer solution with analog outputs.
Need a tight and tidy way to measure 6-degrees of freedom? The SparkFun IMU Digital Combo Board, measures pitch, roll, yaw, and rate of acceleration on each axis in a very flat package!
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.