Check the listing for details. [ Whadda Velleman WSEDU10 ] STEM SHIELD FOR ARDUINO. Condition: New. Listed at 19.95 USD. Use the STEM shield to explore the world of Arduino, sketches, electronics and many more. This is the perfect beginners shield to use when following a STEM education (STEM: Science, Technology, Engineering and Mathematics.) Learn how to program a microcontroller with this interactive Arduino® compatible STEM shield kit. It enables you to get immediate feedback of what you have programmed, be it lighting up LEDs, making sounds or playing a memory game. The STEM shield even has sensors so the possibilities are endless. Specifications:temperature sensorlight sensor7-segment display2 stoplight simulations (6 LEDs)4 tactile buttons1 slide switch1 potentiometer1 sounder1 servo connection1 infrared LEDall modules are 'disconnectable' so the Arduino pins can by used freelya 'line follower' sensor can by made with the IR LED and light sensorthe 7- segment and line follower module can be separated from the main PCBfully Arduino compatible