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Hemlock

Hemlock appears in Y Combinator's company directory in the Fall 2026 batch, listed 2026-08-11. Force-sensing wristband for training robotic AI.

Hemlock

New accelerator entry · 2026-08-11 · the record

Fall 2026
batch
1
people
Early
stage
United States of America
region
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In their words

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.

What the record says

BatchFall 2026
Announced2026-08-11
StageEarly
StatusActive
Team size1
IndustryIndustrials
Sub-industryIndustrials -> Manufacturing and Robotics
SectorsHard Tech, Hardware
RegionsUnited States of America, America / Canada
BasedSan Francisco, CA, USA
HiringYes
Sitehttps://hemlock.info

The full profile

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Sourced from the company's Y Combinator directory entry. Figures are read directly from the source record; names have not been matched against other people.