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.
2x Barlow & 10mm, 15mm Celestron or 25mm Plossl eyepieces used.
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
* 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.
- Google X LabSoftware Engineer - Mobile Robotics / Vision, 2014 - present
- Software Engineer Intern, 2013 - 2013Cloud Solutions
- SpaceXAvionics Intern, 2013 - 2013Avionics Flight Software
- Amazon.comSoftware Development Engineer Intern, 2012 - 2012Music Database
- Geophysical Fluid Dynamics LaboratoryStudent Intern, 2011 - 2011Climate modelling research
- Carnegie Mellon UniversityMS Robotic Systems Development, 2013 - 2015
- Georgia Institute of TechnologyBS ME + BS CS, 2005 - 2012
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