I started looking into how tiny and cheap steppers can get, since micro servos are in the $2-3 range, and holy lady hexapods they can get tiny.
Turns out most tiny steppers come from vehicle dashboard instrumentation. To actually buy them
you don't turn to mcmaster http://www.mcmaster.com/#stepper-motors/=lwy84g
More info here, including the fact that this stepper can be driven directly by an Arduino.
On amazon, these cost ~$2-3 each as well. (search for "stepper motor gauge").
I just order 6 for $16.50 to have some hand to play with (randomly ordering the micro-servos a while back turned out well); we'll see how this goes. So, upcoming tiny stepper gantry?
Some more reasonable 15 cm ones cost ~$15 (vs the price on mcmaster...)
from the facelols, charles seyz
this is why i am considering it:
current commercial options, which are super-slick and $150
http://www.seeedstudio.com/depot/preorder-crazyflie-nano-quadcopter-kit-6dof-with-crazyradio-bccfk01a-p-1364.html?cPath=170_172Uweh. That is SO AWESOME. Actually now I am not so sure there is much point trying to drive the cost down to $80 or so with reusable parts. Then again, if the kits are derpy enough, they should encourage people taking the course to go forth and build better versions.
In theory, tricopters would cut down on costs even more (take out a motor, propeller, and ESC). But something about they are more mechanically complex (extra component, servo rudder)? I might be confused here.
for research, here are some small quadcopters my friends have built:
http://www.instructables.com/id/PCB-Quadrotor-Brushless/ by scolton
what is this all about?
in my pursuit of excessive feedback / encouragement wherever I can find it, I input to 100k coaches corner (sort of questionable since I have no intention of entering the 100k ~_~) yet another description of what I intend to work on:
Khan academy / Udacity with hands-on mechanical engineering projects, fully kitted so no fabrication resources are required, aimed at high school+university level.the current plan is to have three projects, a micro-robot arm, a nano-quadcopter, and a nano-stepper gantry. (Maybe some swarm robots? What other buzzword robots are there? Anyway). Realistically I would be happy just running with the first one, since the timeline is so short (six months until I run out of health insurance). But it's fun to think about the other two/three/infinity.
idk why I feel so awkward about pursuing a startup full force except that my group of friends seems to have a reactionary "too cool for startups" attitude .__.
health insurance after graduating
I'm in this awkward position where I cannot get coverage under my parents. Given my recent spate of issues after a lifetime of not needing to go to the hospital, insurance is a good idea (plus, it's mandated in MA). Therefore:
"Your MIT Health Plan coverage continues through August 31"Ouch, so the FSA (no strings attached MIT accelerator) ends on the 21st with a Demo Day on September 7th. By which point in time it's most likely I'll have decided this won't get to the scale I need to sustain myself and look for a full-time job, but just in case:
bcbs I / II
"you must apply before August 1 for your new coverage to be effective starting September 1."Uhm, what, I have to call to get a quote. Meh. Looks like in the range of $200 a month as of three years ago.