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Sameer Ansari (Sam)
Works at Google X Lab
Attended Carnegie Mellon University
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Sameer Ansari

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Sunset launch ✓
DSCOVR in good health, on way to Lagrange point 1 ✓
First deep-space mission for Falcon 9 ✓
http://www.spacex.com/news/2015/02/11/spacex-launches-dscovr-satellite-deep-space-orbit
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Sameer Ansari

➥ Art & design  - 
 
My rear speaker looked lonely on the floor so I laser cut a stand for it, the windows were cut by drawing out a golden ratio stencil, also put in two LEDs for some mood lighting because why not.
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Now use RGB LEDs and modulate the color and brightness according to the frequency and volume of the sound being played. :)
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Sameer Ansari

Discussion  - 
 
Small pan tilt using two hobby servos
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Sameer Ansari

Work in Progress  - 
 
Built a heat-tracking camera prototype as a fun demo for a thermal camera.

An Arduino Mega talks to a Lepton thermal micro-bolometer (Not near-infrared but long-wave 8-14um IR thermal) which speaks SPI and gets an 80x60 resolution thermal map.
It then moves an NTSC on a 2 servo pan/tilt rig to track the warmest object.
It also displays the data massively downsampled onto a 8x8 led matrix .

Huge amount of help getting running from http://www.pureengineering.com/projects/lepton 

Video up on youtube also: http://youtu.be/JifixV3FmtY
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+Aglef Kaiser definitely a fun idea on the next todo

+Sebastien Dicaire Have a look here https://groupgets.com/campaigns/58-flir-lepton-thermal-imager-w-optional-breakout-board-batch-5 though I haven't used it
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Some photos/videos from tonight of the Moon and Jupiter using a Nexus 5 attached to an Orion 11043 SpaceProbe 3 Reflector Telescope. Still some work to be done to get cleaner images of Jupiter.

2x Barlow & 10mm, 15mm Celestron or 25mm Plossl eyepieces used.
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I tried with a digital camera today .
I had the photos exactly similar to yours..

Now I am happy.

:) . 700mm focal length 20mm eye piece and digital cam @dslr equivalent of 70mm
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Wow
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Sameer Ansari

➥ Show-and-tell  - 
 
Using an NTSC camera fed to a small 4.3" car rear-view monitor, I was able to jury-rig a 'soldering microscope' setup.

This shows what the camera sees: http://youtu.be/5DESJ8FGvCk

It's surprisingly pretty useful to glance at every so often, the hard part is mapping my movements to the movements on-screen.
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Awesome use of what you have.  I use a USB microscope on a PC. :)
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I have a raspberry PI and noir camera (love that I have control over exposure etc.) which I'm using with this telescope that'll now have sidereal tracking, I plan to take a ton of photos and do image rectification and stacking.
 
Got it working! Sidereal tracking using Nema 17 motors and a big gear train.

Tech used:
* 3D Printed mounts and worm
* Arduino + stepper drivers for driving the system
* Raspberry pi + pi noir camera to take photos
* Cellphone mount, though haven't been able to control exposure on that as well yet.

Gear ratio calculations:
* Nema 17 motor (200 steps per revolution)
* 100:1 Planetary gear ratio on motor
* 80:1 Worm gear (80 tooth gear)
* ~4:1 Friction wheel setup
* Stepper running at full step here

At full steps gear ratio is ~ 200*100*80*4 = 6,400,000:1 or ~0.2 arc seconds per step, where the earth's sidereal rate is roughly 15 arc seconds per second. There's a ton of slop due to the backlash of the worm and the rubber in the friction wheels, but once it's moving it's consistent.
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"Lego technics, level 10" :) Very nice!
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Have him in circles
359 people
Charlotte Banks's profile photo
Drew Johnson's profile photo
Eric Sood's profile photo
Kris Batol's profile photo
Daryl Duran's profile photo
Steven Blass's profile photo
Rachel Lucas's profile photo
Dillon Sharlet's profile photo
Easvari Pradhaa Suresh's profile photo
Basic Information
Gender
Male
Work
Occupation
Robotics
Skills
Motion planning, cloud computing
Employment
  • Google X Lab
    Software Engineer - Mobile Robotics / Vision, 2014 - present
  • Google
    Software Engineer Intern, 2013 - 2013
    Cloud Solutions
  • SpaceX
    Avionics Intern, 2013 - 2013
    Avionics Flight Software
  • Amazon.com
    Software Development Engineer Intern, 2012 - 2012
    Music Database
  • Geophysical Fluid Dynamics Laboratory
    Student Intern, 2011 - 2011
    Climate modelling research
Education
  • Carnegie Mellon University
    MS Robotic Systems Development, 2013 - 2015
  • Georgia Institute of Technology
    BS ME + BS CS, 2005 - 2012
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A DIY Time-Lapse Camera That Can Shoot for a Year on 4 Alkaline D Batteries
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A time-lapse video of a trip from Los Angeles to New York by car.

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Great date night place. Servers are professional, ambiance is nice, and the food is delicious, get the cheeses.
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reviewed 2 months ago
I interned for a summer in 2011 in the area, and joined the club to row on weekends. The boats are gorgeous and there's nothing more relaxing a weekend rowing out to Alcatraz and spending the afternoon wiping down a wooden rowboat older than you on the beach, on your own personal dock looking out to the golden gate bridge.
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Vince is a great guy and great barber. His shop is comfortable and quiet and you'll get a good haircut for a good price. Note: Cash only.
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They really do seem to be the best robotics program in the nation.
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