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Hello world! today i wrote a simple code to control 4 relays with a keypad LCD shield for arduino. You can add any device and the code is easy to modify. I used 1 lamp as a example device. The video displays dutch text on the lcd screen but the code i uploaded is english, "apparaat" means device. Follow the next step for the schematic, Code & Parts list.

Step 1: Schematic, Code & Parts List.

Just wire it up like the schematic, upload the code and it should work.

If things don't work you probably don't have the library LiquidCrystal.h installed.

Parts list.

  1. Arduino mega 2560, I used the RobotDyn Mega 2560
  2. 4 x 1 channel relay KY-019
  3. LCD shield with keypad. <- i bought a bunch of those. shipping fast
  4. Jumper wires set MM/FF/MF
  5. Power cables + lamp sockets.(optional)

Good luck!

<p>Good one... is it possible to use relay code for rotating DC motor clock wise and anticlock wise?</p>

About This Instructable

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Bio: Hello world! I make simple & Advanced projects for people who want to learn programming and electronics. Most of my Instructables are about arduino and the ... More »
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