Arduino Keypad Wiring Diagram. Connect the keypad to the arduino. Learn more about using the oled display with the arduino.
Lcd is connected in 4 bit mode. Guide for i2c oled display. The servo motor rotates the container and drop the food on the time set by the user.
Rw pin of the lcd is grounded.
A macro keypad can be used to perform certain actions or functions on your computer and can be really useful with certain applications such as video editors or games. Pins 4 3 2 1 on the keypad should be connected to digital pins 9 8 7 6 on the arduino respectively. In this project the lcd module and arduino are interfaced in the 4 bit mode. Now as we know how to interface the microsd card module and the arduino uno together let us learn how to prepare the microsd card to handle files in arduino ide.