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Diameter: 2mm
L293D ia a PUSH-PULL FOUR CHANNEL DRIVER WITH DIODES
big torsion
B1 can be assigned arbitrarily to pins 5
That means that you will not get increased backlash - so they're suitable for precision CNC work
LCD Shield with Keypad SEND DATA Diameter: 2mmProduct Description The LCD Keypad shield is developed for Arduino compatible boards. It provides an easy and user friendly interface with both LCD and keypad 5 buttons. It consists of a character blue backlight LCD and of 5 keys select, up, right, down and left. To save the digital IO pins, the keypad interface uses only one ADC channel. The key value is read through a 5 stage voltage divider. For LCD and keypad Arduino shield Datasheet and Arduino
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