Trying to connect two Arduinos, one with 4x4 keypad and other with 16x2 lcd. we are trying to enter a number on the key pad and have it read on the lcd.
That sounds perfectly possible, so post what you have tried so far including details of exactly how you are connecting the 2 Arduinos and what results you are getting.
Steve
@OP
1. Try to connect Arduino UNO and Arduino NANO as per following diagram.
2. Once you have finished the above connection/setup, please write some codes for UNO and NANO so that they can communicate. What sort of communication is it? First start with this one: as you keep entering digits from the Keypad of the UNO, they will appear on the LCD display unit in real time. After that, experiment with other ideas like adding two numbers and show the result.
3. Please, post your codes/sketches -- anything that you have written; but, no copy and paste from the web!
Looks like a homework assignment.
CrossRoads:
Looks like a homework assignment.
And there are volunteers in the Arduino Forum to assist those kids, and all these are now possible owing to the virtue of 'Smart Information High Way' which we could never think about in the era of 1980.
This is not a home work assignment, its a personal project. I have a book "Programming Arduino Next Steps" Chapter 12 has UART programming. I tried to use that method and I cant seem to get it to work.
painterzach88:
This is not a home work assignment, its a personal project. I have a book "Programming Arduino Next Steps" Chapter 12 has UART programming. I tried to use that method and I cant seem to get it to work.
Please, post the codes that you have found in the book and tried to make it work.