Haeyven Antagonist

A completely new, unique, and revolutionary full body strength and cardio training machine for bidirectional and unidirectional training. In a bidirectional movement, both active and supporting muscle groups are trained at the same time.

Beeliners was responsible for the sensors, electronics, and the innovative interface that makes the Antagonist smart.

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The challenge

The data from the Antagonist needed to be displayed, but far less data was available for it than for comparable machines like rowing machines. There was a need for an interface that worked accurately in the lower range.

Additionally, the interface came with demanding technical requirements:

The interface needed to be able to distribute electricity.

A unique swap function was needed to switch between a charging channel and a data channel.

It needed to support a connection with Apple Watch.

The idea was to use the generated power to charge the accompanying tablet, rather than storing it in power banks.

The solution

Beeliners was given the freedom to design a suitable interface, with the device’s dimensions as the only constraint. The team started with a prototype, which was then tested and refined further, adjusting any parts that didn’t fully work.

For instance, the existing micro USB connector turned out to be unsuitable for the required swap function, since it always defaults to whichever function was last used and can’t switch between acting as a charging channel or a data channel. USB-C was chosen instead, a bold choice at the time, but one that ultimately paid off. Switching between functions should be possible under the USB-C protocol.

Updates have continued to be made over time to keep the interface current. The initial plan was to deliver the project within four weeks of the assignment, but even now, the interface is still being continuously refined to keep up with evolving market demands.

Beeliners’ contribution

Within the project, Beeliners was responsible for the sensors, electronics, and interface of the Antagonist. New features were also continuously added to get all the data flowing to the monitoring systems.

How we approached it

Hardware

Developing the sensors and electronics for the Antagonist.

Software

Software for monitoring and processing training data.

Prototyping

Building and refining the prototype based on testing and feedback.

Connectivity

Building the USB-C connection with swap functionality and the connection to Apple Watch.

The result

The first prototype proved to be a success. Haeyven showcased the Antagonist at the fitness trade fair in Cologne, where it won the award for most innovative new fitness equipment. The fair led to five concrete orders worldwide. It remains to be seen how the Antagonist will perform in the market going forward.

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