Build your own - fully arduino® compatible - microcontroller and enhance it with 4 built-in buttons and blue leds. the nibble only requires through hole soldering skills and is preprogrammed with a working memory game (smd c
Arduino® compatible photosensitive sensor module with 3 pin flat cable. Measure light levels with this sensor module. this module uses a light dependant resistor (ldr) to produce an output voltage that varies with light level.