Hello everyone, I modified the reactor model in Chernobyl so that it can be connected to an Arduino, powered, and actually burn.

I recommend not using the STL model because it does not include the negative parts for guiding the LEDs. Only the print profile contains them. The print profile also includes a pause in the print, when we have to introduce the led diodes, stick them in place with a hot melt gun. Then it won't be possible. The correct location of the LEDs is shown in the photos.

Another important thing is sticking the cotton wool. The cotton wool helps spread the light from the LEDs naturally.

Recommended cable routing and placement of LEDs during print pauses:

Because I wanted a really real reactor, I stopped the print and put a piece of radioactive rock in here. Uranium ore. Alternatively, you can buy an "ion chamber" online, which contains Americium and is radioactive. It is sold as a sensor for a smoke detector.

I recommend using an Arduino Nano, an NPN transistor (not a MOSFET), red LEDs rated at 20mA, and 50 Ohm resistors (48/60, anything around 50 Ohms will work). Always connect two LEDs in parallel to one resistor. Power the Arduino from a USB cable, power bank, or charger. Upload the code to the Arduino. Connect all positive terminals of the LEDs to the 5V output of the Arduino (pin +5V). Connect the base of the transistor through a 1kOhm resistor to digital output pin D3 (which supports PWM regulation). Connect the emitter of the transistor directly to the Arduino’s GND pin. The collector of the transistor should be connected to the resistors, which then continue to the negative terminal of the LEDs.

The "fire" LED will flash gently.

Arduino code:

"

int ledPin = 3; //

int ledPin1 = 6; //

void setup() {

pinMode(ledPin, OUTPUT);

}

void loop() {

analogWrite(ledPin, random(150) + 105);

analogWrite(ledPin1, random(150) + 105);

delay(random(150));

}

"