Full build write up and videos here: COMING SOON
LiTeRo, short for Little Telepresence Robot, is a DIY Raspberry Pi powered robot that can be controlled from any web browser from anywhere in the world. We wrote a single Python program in conjunction with a lightweight AJAX-style communication standard to achieve extremely low latencies with relatively few software dependencies.
LiTeRo is as a do-it-yourself project is designed to be exceptionally modular and customizable. By default, it was designed to sport a wide angle Raspberry Pi camera, High-power IR navigation LED, 9-DOF IMU, 4Ah LiPo battery (with monitoring), and a roll-in charging dock. Also incorporated later in development was a method for verbal communication. That’s right, LiTeRo can speak nearly 50 languages with the eSpeak Text-To-Speech (TTS) engine! Other TTS software packages for the Raspberry Pi can also be implemented with relatively minor revisions to the Python program. The robot can also sport a number of 9g servos for basic environment manipulation or for self-righting maneuvers.
Continue reading LiTeRo – The Little Telepresence Robot
After years of waiting to find the right hardware, I have finally found the time and the opportunity to build my own digital mechanical clock that uses absolutely no transistors or ICs. Its technology is reminiscent of the early relay computers from many decades ago. It uses 67 relays arranged in such a way to create 21 identical flip-flop logic circuits.
Continue reading The electromechanical relay clock project is complete!
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