Hello world! Today i made a simple time bomb 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.
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Step 1: Schematic Code & Parts List. KYX 5461AS
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.
- 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.