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3 Channel Path Tracing ModuleFeatures:3 channel tracking sensors, must-have in your Arduino DIY Robot Projects;Uses infrared light detection, anti-jamming capability, using CTRT5000 sensor, adjustable sensitivity, stable performance;Working voltage: 5VWith lights, a fixed bolt hole for easy installa..

Raspberry Pi 2 B 40 pin GPIO Reference BoardThis is a 40 pin GPIO Reference Board For Raspberry Pi B+/Respberry Pi 2.A simple gadget that can be put onto the GPIO header of a Raspberry Pi so that you can tell what pin does what. This handy reference board makes putting projects together simple ..

Raspberry Pi 3B/2B/B+ GPIO Ruler V2It is a rule, and it is a Raspberry Pi reference board.It is an ideal quick reference for GPIO hacking on the Raspberry PiBegin your Raspberry Pi tutorial from it.It can be used as both CM and Inches ruler...