About: 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 wide range of sensors you can use with it. I make…

Take a look at the video to see it at work.

Check the next steps for the Schematic and code.

Step 1: The Schematic and Parts List.

Just connect it as the schematic shows. Upload the code and it should work.

I added a on/off switch a reset button and a power jack, those are not

shown on the schematic but easy to add.

To add a reset button just add a button to the reset pin, put one wire in the

reset pin and one in ground.

You can also add extra buttons for C and D as shown on the schematic.

My final project will have a red button for the red team and green for green team.

Parts list.

  1. Arduino UNO
  2. Potentiometer (+ knob optional)
  3. buzzer
  4. On/Off switch
  5. 1 Channel relay
  6. lcd 1602 - Blue Backlight
  7. 4x4 Keypad
  8. 2x Red leds, 1x green led.
  9. 2x 220 Ohm (220 R) resistors
  10. A set of MM FF MF Jumper wires
  11. Female Power jack & adapter (optional) (You can also add batterys of course)
  12. 2 buttons for C & D(optional)
  13. 1 button for reset (optional)
  14. Alarm Strobe? Alarm Sound?

(i used male and female audio plugs to connect the lamp)

Step 2: The Code.

There are multiple codes inside.

Open and upload the Time_Bomb_Airsoft_Game.ino

If you connected everything the right way it should work right away.

Be creative! make a nice enclosure for it.

Good luck!