Solenoid engines are nothing new, though they still seem to be a fairly common project among the curious. Using a hard drive makes such a project much more simple and straight forward, that is if you want to keep it that way.
This solenoid engine uses a software control loop (code below) running on a 16MHz Adafruit Trinket to adjust its speed. The program specifically alternates between a modest 180RPM to a smashing 3000RPM every five or ten seconds! Watch the video below!
Continue reading Hard Drive Solenoid Engine With Trinket
My (not so) fancy-like PC has recently developed this issue where it, regardless what the power settings are set to, will always go to sleep within one or two minutes of inactivity. I found this to be an incredibly large nuisance when it came to watching videos, 3D printing something over USB , or just
brainstorming in front of the keyboard basking in the warm glow of the monitor; the PC will never fail to go to sleep after a mere matter of seconds.
After much wasted time in the many Power Options windows, and after hunting through old, seemingly irrelevant forums, I have decided to bring yet another Adafruit Trinket to the rescue.
In less than a dozen lines of code, I got the Trinket to “poke” the mouse once every 59 seconds. The net movement is 0 pixels over time, and the “poke” occurs in a matter of a few clock cycles.
Check out the code below:
Continue reading Fixing the Symptom, Not the Cause – The Smallest Trinket Project
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