Parts

Bill of materials

under construction, part numbers will be added

	Part Name	Part data
3-5m	405nm UV Led tape	12V / 14.4W/m
1 x	Microcontroller	ESP8266 or ESP32 development board
1 x	Power Supply	12V / 100W
1 x	Step-Down regulator	12V > 5V (adjustable)
1 x	Low RPM brushed DC motor	12V
2 x	N-channel MOSFET	15A modules ("logic level")
150gr	ASA Filament	3D printing rotational axis

---

• UV Light

  12V led tape, 405nm wavelength, 14.4W per meter.
  You'll need 5 meters for sufficient results, but you may get away with 3 meters for smaller station.

  What is equally important as led light, is reflection. Glass mirror, mirror foil or Mylar foil used in agriculture, whatever is easiest for you to get your hands on. If nothing, kitchen aluminum foil will also work, although not that good as mentioned stuff.

• Microcontroller

  Because GUI run as a standalone app, there's no HTML code to eat flash, it can run even on ESP-01.

  If run on ESP-01, 2 pins goes on light and motor mosfets, 2 pins are free for peripherals like I2C LCD.

• Power Supply

  150W is sufficient for the project, because it's always the best to double wattage when choosing a power supply.

  Don't go under 100W if you use 5 meters tape and 12V-1A dc motor.

• Step Down Regulator

  Adjustable step-down to go from 12V to 5V or 3.3V to power microcontroller.

• Low RPM DC Motor

  If motor is not low rpm, it's possible to increase gear reduction to lower speed, and also to lower PWM duty cycle. I took one from an old printer, it's 850ma and works great.

• N-channel MOSFET

  The best solution for beginners is to use one of those 15A 400W modules with two transistors on it, since they are pretty cheap and easy to connect, support 3.3V and 5V logic.

  On LED side, we will never use more than 6A, even on maximum power. Way less on motor side.

• ASA Filament & 3D printer

  ASA is heat & UV resistant, perfect combination for rotational axis.