Michael D'Argenio
[email protected]
https://dargen.io https://github.com/mjdargen
September 19, 2019


*Ask the Magic 8-Ball any question.
*https://en.wikipedia.org/wiki/Magic_8-Ball
*An Arduino-version of the fortune-telling toy.
*Uses 16x2 LCD Screen and switch of your choice.


The LCD circuit (16x2):

• LCD RS pin to digital pin 7
• LCD Enable pin to digital pin 8
• LCD D4 pin to digital pin 9
• LCD D5 pin to digital pin 10
• LCD D6 pin to digital pin 11
• LCD D7 pin to digital pin 12
• LCD R/W pin to ground 10K potentiometer:
• ends to +5V and ground
• wiper to LCD VO pin (pin 3)

Switch

• A tilt ball switch works nicely to mimic an actual magic 8-ball, but any switch will do.
• Digital input 2
• Configured as external interrupt
• Pulled down with 10k resistor to GND
• Other end of switch connected to 5V