Touchless Soap Dispenser

With a brief set for a wall-mounted touchless liquid dispenser capable of dispensing either hand sanitizers or soap depending on their situation, I started out by defining the technical constraints. I utilised the client's existing PCB using TOF sensors, dosing modules, and liquid containers to define the internal space claim - this gave me the minimum size it could be and the shape it needed to cover.

My objective extended beyond standalone functionality, with an additional directive to seamlessly integrate the dispenser within the larger framework of the Z1.2 mobile handwash station project - something else I had been managing. If one functioned without suiting the needs of the other, it did not truly function.

Adhering to our signature aesthetic, I meticulously selected brushed sheet metal for the edging, complemented by a sleek solid acrylic front, harmonizing with the overall product range.

The core chassis was constructed of stainless steel for optimal hygiene and corrosion protection; and housed all electronic components internally, fortified by a robust locking system to safeguard against tampering. Utilising stamping tools and precision folds, I ensured a sturdy and streamlined design. Moreover, I designed the product with the flexibility to transition to plastic injection moulding should the demand escalate, ensuring scalability without compromising on structural integrity.

The primary challenge revolved around spatial optimization. It necessitated an innovative approach to accommodate a liquid reservoir while ensuring the segregation of essential electronics, including the dosing pump, PCB, and batteries. My solution prioritized accessible compartments for convenient replenishment, underscoring my commitment to user-friendly design without compromising on operation.

The product had drawbacks, by using a TOF sensor it was energy consumptive and did not suit the needs for the dispenser to be remote and battery powered - no excessively large amount of batteries/power density could compensate and the project was reduced from a stand-alone product to one suited to its parent project the Z1.2 where it would have a constant power feed.