Job Description
You will design the mechanical enclosure and industrial design for a new prototype of the Bracelet, from an existing, finalized electronics package that we provide.
This is not a generic enclosure job. The Bracelet is a body-worn sensor, and the mechanical design directly determines the quality of the data it produces. Electrodes must hold consistent contact pressure against skin across a wide range of wrist sizes and throughout arm motion. The band, the enclosure, and the sensor mounting are one coupled mechanical system.
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Job Details
- Category
- Mechanical
- Employment Type
- Contract
- Location
- San Francisco, CA (Remote)
- Posted
- Compensation
- $2,000 - $5,000 per year
About Hemlock
Every serious robotics lab is bottlenecked on the same thing: demonstration data. The field has converged on egocentric video and hand pose as the substrate, and both are now cheap to collect at scale. What neither of them contains is force. A video of someone picking up an egg and a video of someone picking up a rock are nearly identical in pixel space and nearly identical in joint angles. They differ almost entirely in a quantity nobody is recording. Policies trained without it learn geometry and inherit no sense of touch. Hemlock closes that gap at the source. Our device, the Bracelet, is a wrist-worn surface EMG band that reads the electrical activity of the forearm muscles that actually drive the hand, which means it recovers contraction force directly rather than inferring it from motion. This distinction is the whole thesis: force cannot be reconstructed downstream of kinematics, because a hand squeezing hard isometrically and a hand resting can occupy the identical pose. Muscle signal is the only non-invasive channel that separates them.
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