HC SR04 MODULE WITH KEYPAD ERROR

I want o create a project for security ro open a door and close a door when someone is present within a certain range of the hcsr04 sensor.

I want to input the range values by using a 3x3 matrix keypad

The problem I am facing is i can't input the data using the keypad in the range variable i can serial read the keypad but I have no idea how to do it

I have tried many calculator example password door lock example but nothing helped

I will be thankful if any one from you can do the code for me

I will be thankful if any one from you can do the code for me

I am sure that you would. If you want someone to write the code for you, post in the Gigs and Collaborations section of the forum. Be prepared to provide a lot more information and be prepared to pay.

Otherwise try to write the code, yourself. When you have trouble post the code here with a description of what the code is doing and how that differs from what you want the code to do and we will try to help you get the code to work the way that you want.

Please read the "how to use the forum-please read" stickies to see how to post code and hints on how to ask a good question.