Arduino Forum

Topics => Education and Teaching => Topic started by: rajendasgupta on Sep 06, 2018, 10:03 pm

Title: Control individual Relay using 4x4 Keypad with 16x2 LCD Display
Post by: rajendasgupta on Sep 06, 2018, 10:03 pm
I am going to design a 4x4 Keypad control Lighting System using 16X2 LCD Display. Looking for Code in which Master Pin is required to activate the system to control the relays with respective Keypad numbers (Display on LCD).

If anyone have any ideas then suggest wiring and code based on arduino.

Components:

1. Arduino Uno
2. 5V DC 8 CH Relay Module
3. 16X2 LCD Display
4. 4x4 Keypad Matrix


Kindly suggest and share your ideas
Title: Re: Control individual Relay using 4x4 Keypad with 16x2 LCD Display
Post by: GolamMostafa on Sep 12, 2018, 06:47 am
You have 8 relays which could be marked as RL0 - RL7. Do you want to make RL0 ON when the 0-button of Keypad is pressed for the first time and to make it OFF when the same button is pressed next time? And the similar for other relays?
Title: Re: Control individual Relay using 4x4 Keypad with 16x2 LCD Display
Post by: nielyay on Sep 14, 2018, 06:48 pm
Have you check this page?
Check here (https://www.instructables.com/id/Arduino-16x2-LCD-Display-and-4x4-Matrix-Keypad/).