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Hello world! Today i converted a 1 Channel monitor to a 4 channel monitor by using arduino, it has a keypad plus access code, Default code is 1234. We use 4 Relays to control 4 CCTV cameras. I had this old monitor laying around dusting away and i decided to make a circuit on a prototype board to put my old monitor back in use, since i have 4 wired cameras and this monitor can only take 1 wired cam, i made some kind of splitter from a couple of DVR Cables from a broken EasyCap USB Dvr box, Arduino, a 4x4 keypad, a 4 channel relay module and a old Monitor that had 4 wireless cameras by default. Follow the next step for the Schematic, Code & Parts list.

NOTE: You can also do this with your tv of course!

Step 1: Schematic, Code & Parts List

Just wire it up like the schematic & Upload the code!

Parts list.

  • Arduino uno
  • 4 Channel Relay Module
  • 4x4 Keypad
  • PCB Prototype board, Or breadboard.
  • Jumper wire set MM/FF/MF
  • Leds, 1x red 1x green. Or Whatever color you like.
  • Buzzer (optional for key press sound)
  • Old 1 Channel monitor Or just your TV.
  • 5 DVR Video Cables The yellow ones,(Red ones can be used to! I used a red one 2.. Doesn't make a difference, white can be used to.)
  • And of course 4 wired cameras!

Simply cut the DVR Cables in half or as long as you want them.

You will see a white and red wire, at least in my case it was. White is - (Cathode) Red is + (Anode)

Connect it like the schematic shows. Put it on a breadboard or solder it to a PCB Prototype Board.

It is very easy! Good luck!

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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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