Arduino Time BOMB for airsoft 7 segment 4 digit display

Hello world! Today i made a simple Arduino Time BOMB for airsoft with a 4 digit 7 segment Display (product number:KYX 5461AS). It is very simple and again can be used for multiple things of course! You trigger it with a button, it will reset automatically using watchog. avr/wdt.h library. Follow the next step for the code Schematic & parts list.

I am not responsible for any other uses!
You can make a bomb with a motion sensor to, this is not what it is about. Its for fun recreational and educational use.

Arduino Time BOMB for airsoft

Just wire it up like the Schematic and it should work after uploading the code!
If not!? You need to install the avr/wdt.h Library, But most likely you don’t have to because it comes with Arduino IDE. It’s the library we use to reset the Time Bomb (watchdog) See more info here how to use Watchdog.

Parts list:
Arduino uno, i used the RobotDyn Uno. (as i always do! :p )
4 Digit 7 Segment Display. ( product ID: KYX 5461AS) very cheap!
1 channel relay KY-019
KY-004 Button Module.
Buzzer/ Piezo buzzer.
4 x 1k Resistors.
PCB prototype board/ or Breadboard. (I soldered the resistors, display & buzzer on a prototype board) (option)
Set of Jumper Wires MM/FF/MF.


Danny van den Brande

Programmer, Game Designer, 3D Designer, Web Designer, Graphic Designer. Jup this website looks crappy.. :) But enjoy the projects! Everything you need is here.

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