ThermoStat

cults3d

For a fresh and upgraded version on my own website, visit https://www.designuitinspiratie.nl/hot-end-thermostaat/\n\nConnect a 100K NTC, a Heater and Power Supply. Then set the Temperature you need and this Thermostat will keep your heater at this temperature.\n\nThis DIY tool made from spare parts is used by me to heat up heaters such as Hot End and Heat Beds from 3D printers. This way I can work on them on the bench.\nIt also comes in handy with drying Filament or keeping any chamber at a specific temperature. The top row in the display shows the Thermistor Temperature. The bottom row shows the Set Temperature. The Red LED burns when the Heater is activated. The Arduino is powered separately from the FET and Heater part so I have free choice in Power Supplies. The Arduino can be powered from the front through USB or wall adapter or via the back connector.\n\nIt is built into the housing of an old DVD Burner (meant for PC cases).\nThe basis is an Arduino Uno that measures the temperature and switches the FET for the heater. In the Photo Section, I included a super simple schematic. Also, for those interested, an Arduino sketch is included. I have set mine in C, but the Fahrenheit option is still disabled in the sketch.\n\nNote: I had to clip some leads of the Arduino short to make it fit into the (3D printed) front.\n\nNote2: The Red LED is not shown on the schematic.\n\nNote3: I used an Optocoupler, but it also works without. You can skip it and just connect the gate of the FET (through a resistor) directly to the Arduino. But I think that people who are interested in this will know.\n\nOtherwise, feel free to ask.