Automatic Powder Dispenser

thingiverse

The purpose of this device is to dispense predetermined amounts of drink mix, such as: hot chocolate, sugar, or powdered flavoring. It includes the choice of three different sizes: small, medium, and large. There are three design options. The first is fully manual; a knob is rotated to release the powder. The second uses a servo to control the knob and three LED's to indicate the amount of powder that will be dispensed. This option uses two buttons to control the desired size, either small, medium, large, or unlimited. Holding the button allows the unlimited feature to be utilized, releasing powder until the button is released. The third option uses an LCD screen to indicate the desired size choice, along with the status of the servo motor: either "in progress" or "ready". It also uses two buttons in the same way as the second option: to choose the desired size. The stand and hopper can easily be recreated and modified based on the individuals preferences based on the dispensers dimensions. Here is a video of the Servo working with the LCD Screen and the two push buttons. https://youtu.be/Bb2jCJ9-6Tw Instructions Depending on your own preferences, either of the three models can be used by downloading their corresponding parts. Manual Model: -Dispenser -Dispenser Hopper -Dispenser Stand -Dispenser Key Without Servo LED Display Model: -Dispenser -Dispenser Hopper -Dispenser Stand -Dispenser Key With Servo -Dispenser Control Panel for LEDs -Powder_Dispenser_LED.ino LCD Display: -Dispenser -Dispenser Hopper -Dispenser Stand -Dispenser Key With Servo -Dispenser Control Panel for LCD Screen -Powder_Dispenser_LCD.ino For the LED and LCD models an arduino Uno controls a servo that mounts to the back of the dispenser and attaches to the the key. Two push buttons are used as well as a LCD screen or three LEDS. The program can be easily changed to modify the timing of the servo motor.