This is a DS18B20 temperature sensor in a waterproof housing with 36 inch long insulated leads. This is perfect for both internal and external temperature measurements in outdoor robotic applications.
The Spektrum AR620 air receiver is a full-range, 6-channel sport receiver with DSMX/DSM2 compatibility and a compact footprint that’s streamlined to fit in a wide range of models. Great for Robots too!
SparkFun's minimal design approach to Arduino. This is a 5V Arduino running the 16MHz bootloader.