Filament Dehydrator Temperature controller - Thermostat

thingiverse

*** WORK IN PROGRESS *** 3D Printing Filament Dehydrator Control Module This sketch controls the heater element(s) of a standard Food Dehydrator to enable drying various 3d printing filament at their suggested drying temperatures and times. An Arduino is used to display and capture menu selections through three momentary push buttons. Pre-stored values for targeted temperature will be compared to inputs from a DS18B20 Dallas digital temperature sensor. Results of this comparison will then control the heater element relay via a 5v signal. ####-WARNING-#### The timer function is only used for reference and does not execute any action on the dehydrator. This is done to prevent filament re-absorption of humidity in case of long running times after auto-shutdown of the heater element. A buzzer/alarm may be added in the future. BOM: * Arduino Pro Mini: http://s.click.aliexpress.com/e/bggepclK * OLED mini display (128x32): http://s.click.aliexpress.com/e/JS7tG0g * DS18B20 Temperature sensor: http://s.click.aliexpress.com/e/b8dHx8 * 4.7Kohm resistor (for DS18B20) * Relay module * Push buttons (3) * 10K resistors (3) * AC120 to DC5V converter Arduino Libraries required: * https://github.com/adafruit/Adafruit-GFX-Library * https://github.com/adafruit/Adafruit_SSD1306 Arduino Code: https://github.com/MirageC79/FilamentDryer_Controller