Arron Acosta

699 posts

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Arron Acosta

Arron Acosta

@arronacosta

Machinery Tinkerer • dreamer • MIT Mech E 2010 • RISE Robotics Cofounder • Techstars Boston 2012 • Greentown Labs Alum • Apple alum •Satoshi’s Vision $arron

Back Bay Katılım Eylül 2008
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Arron Acosta
Arron Acosta@arronacosta·
RISE Robotics | Guinness World Records™ Certificate Presentation youtube.com/live/Vf2kZUb_c… we do other things too like liftgates, portable lifts, and generally competing with hydraulics and electromechanical linear actuators like ball screws and roller screws
YouTube video
YouTube
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Arron Acosta
Arron Acosta@arronacosta·
@_joe_harris_ A new form of linear actuator that uses a belt block and tackle made of stainless steel wire ropes inside of polyurethane - by @RiseRobotics
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Joe Harris
Joe Harris@_joe_harris_·
if you're new to actuators, study these companies: strain-wave reducers (rotary transmission): - Harmonic Drive Systems, Japan - Leaderdrive, China - Green Harmonic, China planetary roller screws (linear transmission): - Rollvis, Switzerland - Schaeffler / Ewellix, Germany - SKF, Sweden frameless BLDC motors: - Kollmorgen, US - maxon, Switzerland - TQ-RoboDrive, Germany - CubeMars, China bearings: - THK, Japan - IKO, Japan torque sensors: - ATI Industrial, US - FUTEK, US complete actuator modules: - Hyundai Mobis, Korea - Apptronik, US - Unitree, China - AgiBot, China encoders: - RLS / Renishaw, UK - Celera Motion, US Japan, China, Switzerland, Germany dominate let me know who im missing
Joe Harris@_joe_harris_

Tesla says 56% of Optimus's cost is actuators. America manufactures almost none of them. Generational opportunity for builders in this space.

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Arron Acosta
Arron Acosta@arronacosta·
Let’s create the future we want
Adam Draper ⏻@AdamDraper

At @BoostVC: We exist to accelerate the Sci-Fi future. We do this by investing $500k as a first or early partner in "Default Optimist", "Default Movement" founders. Our core business model is to invest $500k at sub-$10m valuations. We are highest velocity in the category of NewBio right now, but we are generalists for world changing ideas. Thank you.

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Arron Acosta
Arron Acosta@arronacosta·
Grit it
Hubert Thieblot@hthieblot

Never quit as a founder. I’m begging you. It’s 0 for longer than you’ll ever expect. No momentum. Soul-crushing doubts. Nobody seems to care. Even when it looks like it’s working, it’s not. You keep trying new things. You don’t lose hope. Then it snaps to 100. You finally find the one thing that resonates. You wake up with more customers than you can handle. Everything is breaking. Momentum keeps building even when you’re not pushing. Something changed. You didn’t get lucky, you just didn’t leave.

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Arron Acosta retweetledi
Dave W Plummer
Dave W Plummer@davepl1968·
This a computer, and you likely own one. It's a hydraulic analog computer. It’s essentially a machined analog computer that computes with fluid instead of electronics: pump pressure is routed through passages that act like wires, while spool valves, springs, orifices, and check balls perform the equivalents of comparators, logic gates, delays, and one-way elements. What it “calculates” is the machine’s current operating state, whether conditions have crossed a threshold to justify changing state, how strongly to apply each output, and how quickly to make that transition without instability or shock. It does this by continuously balancing forces—pressure on different valve areas against spring preload and feedback pressure—so each valve shifts only when one hydraulic condition outweighs another, while restrictions and chambers add timing and smoothing. In plain English, it is a real-time fluidic state machine that solves “if this pressure is greater than that one, route flow here; otherwise hold, delay, soften, or override” entirely through geometry and oil. They're used in every car with an automatic transmission, where it makes choices like what gear to be in and how hard to apply clutches, etc.... And some dude worked it all out on paper back in the 1960s.
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Art Hits Hard
Art Hits Hard@nightwriter22·
Director Doug Liman's new film, Bitcoin, starring Casey Affleck, is about the hunt for Bitcoin's creator. It used to go by the title Killing Satoshi, a thriller. The price tag is $70 million; however, per Liman, the budget was going to be close to $300 million due to distinct locations—from Antarctica to Vegas—if it weren't for AI. The project is the first fully generated AI feature film. Backgrounds and lighting are all AI, except the performances are left untouched. Gal Gadot, Isla Fisher, and Pete Davidson are also part of the cast. No release date set yet.
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Arron Acosta
Arron Acosta@arronacosta·
Candor will set the story free. The complexity of reality is more beautiful than the mediocrity of lies. Lies fall apart. As an analogy, this art piece by @GurneyJourney is beautiful because of the narrative details. Human imperfections and all. The lie of an ai rendering would have funny hands, background narratives that do nothing, and don’t support the overall picture.
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KryptoKate
KryptoKate@Kate_L_Mosso·
@degrader93 There’s no reason to edit any part of the story. Ppl r going to side with craig, bc he’s principled and didn’t give up. Plus, they hate what crypto is today.
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Martin
Martin@ctblizzard·
@Kate_L_Mosso Simple stuff, like download the handcash wallet, take a pic of your ticket stub get free bitcoin. Or scan QR code during movie and have that transaction blaster app blast trx to wallets (BSV community can participate in advance funding part of this). Fliers or QR code at movie
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@_joe_harris_ @RiseRobotics @JulianSaks @boxcardavid @kyledellaquila @ahmedshubber25 @IanRountree @salient_motion