3D Filament Box Humidity Monitor

Coded By: Je'aime Powell -- [Inital Date: 5/29/21]

Purpose

• Sensor to live in the 3D Printer filament box to monitor filament humidity.
• Alerts during high humidity levels
• Alerts when box/enclosure open
• Beacons BLE for remote monitoring

Built for/Test Equipmemt

 - Arduino Nano 33 BLE Sense
   - HTS221 Temperature and Humidity Sensor (built-in)
   - RGB LED (built-in)
     *<< NOTE!! >> LOW = ON for the LEDs
   - Switch Pin D2 -> GND (Switch Closed for Open Box Message)
     *Note: other built in sensors: Ref: https://store.arduino.cc/usa/nano-33-ble-sense-with-headers
     - LSM9DS1 - IMU
     - MP34DT05 - Mic
     - APDS9960 - Gesture/Light/Proximity
     - LPS22HB - Barometric Pressure
 - SSD1306 OLED (I2C) 128x32 

Filament humidity level alerts

  Humidity levels: 10% - 20% (Excellent), 20%-25% (Good),25% -35% (Fair), >35% (Poor)  
   ! PLA Humidity > 45%
   ! PETG Humidty > 45% 

Bread Board Prototype of Arduino Nano 33 BLE Sense with SSD1306 and Wire for substitute Switch