You now have everything you need to build LiTeRo, the Little Telepresence Robot! The code is now fully commented and ready to teach you everything you need to know about Python and Raspberry Pi powered telepresence robots. You are free to modify and share changes with the community here or on GitHub.
Code and Raspberry Pi setup available on GitHub here:
Full writeup and build videos here:
3D printable files on Thingiverse here:
It’s a simple idea. Just modify the source code from our Arduino IP Webcam project page and add an additional set of AJAX response lines that toggle a couple IO pins on the Arduino. You can have these pins go directly to some headers on your 3D printer and/or to an inline power-switch tail that you can toggle in the event of a problem. All the while monitoring your 3D printer visually with a live image feed from anywhere on the World Wide Web.
Heck, while you’re at it, you might as well add some remote controlled lighting, and a relay shield. Your only limit is
your imagination RAM. Check out this simple user interface:
Continue reading Using the Arduino AJAX Webcam to Monitor and Control Your 3D Printer
The frame is now prototyped and measurements are almost final. Several small changes were made to the source files as result of this prototype (now on internal-revision #24). These changes included primarily wider tolerances and smaller hardware requirements. Other potential ideas are still pending (in particular; optional “taller” landing struts, ESC/wire management, and AIO mounting).
Changes to the last update included primarily, universal motormounts. Now it’s not necessary to use a specific cross plate on a limited range of motors. I’ve adopted the standard 16/19mm hole spacing used on many motors appropriate for this size multicopter. Also, the mount’s face is now flat on both sides, so you can more easily mod them (drill holes) for a specific motor that doesn’t follow these standards. With this, you will need to use 8mm M3 socket cap screws (instead of the shorter, countersunk M3 screws often provided with your motors) to mount said motors to the mounts.
The arms fold back too!
Continue reading Tricopter build log part two
The frame still needs to be prototyped on my printer, though I have modeled the finished project to get an idea of the size.
The distance between motor-centers is roughly 625mm when the two front 1/2″(12.7mm) wood dowels are cut to 350mm and the tail to 310mm (-40mm). This was necessary to accommodate the inline motor hinge that pivots on the axis of the tail arm. These dimensions, along with other things, are subject to change after the prototype gets printed.
I modified Thingiverse user ennui2342’s tricopter body, based off of David Windestål’s RCExplorer tricopter, to support the stronger, more common 1/2″ wood dowels. Other minor modifications to the body were made as well. I also loosely based my landing gear/motor mounts off of jphillips’ designs. The shock absorbing bottom plates (optional setups for FPV shown above) are unique to this tricopter.
Continue reading Tricopter build log part one