Make Your Own Juice Dispenser

The Make Your Own Juice Dispenser project operates on a straightforward pneumatic displacement principle using air pressure to push liquids out of storage containers. The system is housed inside a custom-cut MDF board enclosure, which provides structural support for three 750mL bottles and the mechanical components. Three air pump motors are integrated into the setup to supply compressed air. When the user activates the switch, current flows from the 9V power supply through the circuit, regulated by 1k ohm resistors that help manage the electrical load. Each air pump forces air through a connected pneumatic air hose pipe directly into one of the 750mL bottles. As air fills the sealed bottle, the rising internal pressure forces the liquid up and out of a secondary extraction tube, dispensing the beverage cleanly. Wires connect the power source, switches, and motors into a functional electrical path. While Easy EDA was used to plan and design the circuit schematic prior to physical assembly, the final working project relies on discrete analog switching rather than programmable microcontrollers. By controlling which air pump motor receives power, the operator can select and dispense different liquids on demand from the multi-bottle setup.