Q: How do I connect a 16×2 Character LCD to my microcontroller, such as an Arduino or a Raspberry Pi?

  1. A: A 16×2 Character LCD commonly uses a parallel interface with a minimum of 6 pins for proper functioning. These include RS (Register Select), E (Enable), D4, D5, D6, and D7 for data lines when operating in 4-bit mode. Additionally, you need to connect VSS, VDD, and V0 for power and contrast control, and A and K for the backlight. Specific connection diagrams and code will depend on the microcontroller you are using. In many cases, you can simplify the connection by using an I2C adapter module which reduces the number of pins required for interfacing.