Redesigning Grind & brew

with: 5 other students
where: TU Delft, The Netherlands
when: Feb 2014 - July 2014


Project goal
Create a redesign of an existing coffee machine (Philips HD7762) based on interaction and user experience. This was done by analyzing and evaluating the current product through literature research and a user study, developing a proposal for a redesign and evaluating this through a second user study.

Result
The new redesign is iterated from the assessment of testing the existing coffee machine with users, creating mock-ups and prototypes based on these findings and testing the redesign prototype with users.  

The new design aimed to have an intuitive use, whereby all the settings are chosen by the user and all options are clear and understood while maintaining the features of the original product.

Several key elements of the coffee machine have been redesigned, such as the coffee bean compartments and the water compartment. As opposed to the nearly unchanged filter holder, these compartments were rarely comprehended by the users of the original product. The new compartments can be taken out of the machine to be filled and have clear markings of their purpose and measurement.

The interface has orange lighting, equal to the original design, yet is better structured and easier understood by the users. It has a flow from left to right, covering all settings the user must set. The icons give the user feed forward for the purpose of the button or knob, and the orange lighting gives feedback on the changes to the settings that have been made by the user. The lighting around the ‘start’-button shows the progress of the coffee brewing.

 Redesign of the Philips Grind & Brew in context

Redesign of the Philips Grind & Brew in context

 

Usertest original machine
We did a usage evaluation of the existing coffee machine (Philips HD7762) with several participants. Some tasks were performed and the use flow, usage issues and understanding of the product were tested. The positive and negative points were summarized.

 

Ideation
Based on the findings from the usertest, we started ideating on solutions for the issues that the participants had while using the machine. We used  drawings, clay models, and cardboard to ideate.

Concept development
Several concepts were gathered from the ideation phase.

Prototyping
One design was iterated and a mock-up of the design was created for the usertest of the new design.

 

Prototype
The mock-up was full-size, had some light elements but all the rest was manual. Participants could use the buttons and the sliders and get feedback from the LEDs.

Usertest redesign
The redesign was evaluated with users in order to see if the design(changes) were more positively evaluated than the 'old' design. Overall, this design was better evaluated. The interface was much more well understood by the participants than the digital display from the 'old' design. The use flow was better organized and participants embraced the feedback that the machine gave to them.

 

Final Design
The new design aimed to have an intuitive use, whereby all the settings are chosen by the user and all options are clear and understood while maintaining the features of the original product.

Several key elements of the coffee machine have been redesigned, such as the coffee bean compartments and the water compartment. As opposed to the nearly unchanged filter holder, these compartments were rarely comprehended by the users of the original product. The new compartments can be taken out of the machine to be filled and have clear markings of their purpose and measurement.

The interface has orange lighting, equal to the original design, yet is better structured and easier understood by the users. It has a flow from left to right, covering all settings the user must set. The icons give the user feed forward for the purpose of the button or knob, and the orange lighting gives feedback on the changes to the settings that have been made by the user. The lighting around the ‘start’-button shows the progress of the coffee brewing.