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ARM DO IT

Founder, ARMOR/ Atlanta, GA

I build robotspeople wear.

Hi, I'm Sarasit. Everyone calls me Arm. Since 2018 I have worked on one problem: taking the load off people's backs. Today that is my startup, ARMOR.

Arm do it.
See what I've builtMeet ARMOR
Portrait of Sarasit (Arm) Sirawattanakul
Currently
Building Bexo

Tools and skills: SolidWorks, Siemens NX, Fusion 360, Onshape, FEA, GD&T, Rapid prototyping, 3D printing, Machining, Soldering, PCB design, C++, Python, MATLAB, Robotics, Wearables.

01The short version

Lifting hurts. It doesn't have to.

Every time you bend to pick something up, your lower back does most of the work. Do that all day, every day, and it adds up.

A back exosuit is a light, wearable robot that helps as you lift, so your back carries less. That is what I design. Flip the switch and watch what changes.

More about Bexo
Fig. 1: a lift
heavy
Lower-back loadouch

Drag the figure to bend it. An illustration of the idea, not measured data.

ARMOR

02 / What I'm building now

Safety engineered into every movement.

ARMOR is the company I started to take a lab exoskeleton into the real world. Bexo is a 1.9 kg powered back exosuit for people who lift for a living. Shield turns wearable sensor data into live posture scores.

  • Georgia Tech EPIC Lab
  • gener8tor gBETA
  • Georgia Research Alliance
  • NVIDIA Inception
A worker in a warehouse wearing the Bexo V3 back exosuit

03Robots you wear

Three projects. One patent published, two pending.

The serious side of the workbench.

A worker wearing the Bexo V3 back exosuit in a warehouse
Patent pending
01 · Powered back exosuit2021 – now

Bexo

A lightweight powered back exosuit for people who lift all day. It started as research at Georgia Tech's EPIC Lab and is now the product my startup, ARMOR, is building.

ExosuitWearable roboticsARMOR
Xspine, a segmented artificial spine, mounted on a mannequin torso
Patent published
02 · Semi-rigid back exoskeleton2018 – 2025

Xspine

The project that started everything. A bio-inspired spine that sits on your back and assists you without squeezing your real one.

ExoskeletonBio-inspiredResearch
Twister
Drawing withheld · patent pending
Patent pending
03 · Patent-pending mechanism2022

Twister

A mechanism I designed during my summer 2022 internship at IHMC Robotics. A patent is pending, so the details stay under wraps.

Mechanism designIHMC Robotics

04How I got here

It started with a robot car.

From a school robotics contest in Bangkok to a startup in Atlanta.

  1. 2016

    A robot car and a trophy

    I enter a line-tracking robot race in Bangkok, meet my first PID controller, and win.

  2. 2017

    AgroBot

    A vertical smart farm that wins a Makerthon and Digital Thailand Big Bang.

  3. 2018

    Xspine begins

    In high school I start building a spine you wear on the outside. It gets a paper, a patent and a science-fair championship.

  4. 2021

    Georgia Tech & the EPIC Lab

    I move to Atlanta for mechanical engineering and join the lab that builds exoskeletons for a living. I end up leading the Bexo project.

  5. 2022

    IHMC Robotics

    A summer in Pensacola designing Twister, a mechanism that ends in a patent filing.

  6. 2023

    Alcon

    I join Alcon as an R&D intern and stay on as an applications developer, building the internal tools engineers rely on.

  7. 2024

    Archer Aviation

    Parts, inspection gauges and fixtures for Midnight, Archer's electric air taxi.

  8. 2026

    ARMORNow

    Bexo leaves the lab. I start a company to put it on the people who lift for a living.

Full experience & awards

05The workshop

Things I built because why not.

A calculator with mechanical keys. A pump-action VR gunstock. A car key I did not strictly need.

A TI-84 Plus CE calculator rebuilt with mechanical key switches
01 · TI-84 Plus CE modification

Mechanical-key TI-84

Oil spilled in my backpack and killed my calculator's keypad. Instead of buying a new one, I gave it mechanical keys.

ElectronicsSoldering1 of 1
CAD model of the VR gunstock: a tube frame with two controller mounts and a shoulder stock
02 · For Meta Quest 32023

VR Gunstock

A Thanksgiving-break project: a magnetic gunstock for first-person shooters, with a pump action built from a compliant mechanism.

VRCompliant mechanismMeta Quest 3
A hand holding the custom key fob in front of a Prius
03 · Custom housing

Prius Key Fob

I only needed a spare key to leave with a friend. It turned into a surprisingly educational design project.

Custom housingDesign
The Flowmodoro widget showing a Flow Time counter, a Break Time counter and a Stop button
04 · A timer that follows your focus

Flowmodoro

A count-up focus timer made for web embedding. You work as long as you are in flow, and your break is sized to match.

WebTools
CAD model of the B150 3D printer
05 · Budget 3D printer

B150

A budget 3D printer. The full write-up is still to come, so for now here it is at work.

3D printing
Arm presenting the AgroBot vertical farm at an exhibition booth
2× champion
06 · IoT vertical smart farm2017

AgroBot

A vertical farm on a CNC frame with an IoT dashboard to monitor and control it. I took it to competitions and, of course, won a lot of them.

IoTCNCCompetition
A young Arm holding a trophy at the SPU Line Tracking Robot Contest
Champion
07 · Where it all started2016

Line Tracking Racer

My first robotics competition: whose robot follows the line fastest? It was also the first time I met a PID controller.

RoboticsPID controlCompetition

06On stage at TEDxYouth@Bangkok

Design your education with self-learning.

My TEDx talk. I also run a YouTube channel called Arm Do It.

Watch on YouTubeArm Do It channel

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Need a hand?

I am, quite literally, an Arm.

Exoskeletons, hardware, a project you want a second brain on, or just to talk shop. My inbox is open.

Say hiOther ways to reach me