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HerDreamRing
Helps her pick the right ring, and keeps the proposal a surprise.
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David Nash · Solo builder
Jacks of all trades, master of some.
Roboticist by training, web product builder on the side. Me and my team of AI agents work on all kinds of projects together. Some of it more successful than others.
Latest write-up: The Orchard Leap
Products
Live right now
Live
HIIT Builder
A no-equipment workout generator I built to stay fit while I travel. Free, simple, and has cool animations.
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Robotics
What I've been teaching robots
Despite their best efforts to take over the world, robots still need a lot of tutoring.
The Orchard Leap
Taking the Mamba-3 and Liquid CfC robot out of the tabletop sandbox and into a moving orchard platform in MuJoCo.
Hardening the Robot Brain
Continuing to improve the Mamba + LNN powered Franka Emika robot arm with parallelized cloud training, improved models, and closing the sim-to-real gap.
How RL Training Actually Works in Robotics
A systems view of continuous robot reinforcement learning: why control splits across a 20 Hz policy loop and a 500 Hz PD loop, how GAE trades bias for variance, the truncation bug that quietly biases every late-episode advantage, what the PPO clip does and does not constrain, and which metrics to read when a run goes bad.
Retired
Still online but no longer in their prime working years. They gave it the good ol' college try.
Something you need built, or a question about something I built?
Robot, website, or a problem nobody else will take seriously. Tell me what it is and I'll tell you honestly if I'm the right person.