On the HacDC mailing list, we’ve been having a discussion about Wolfram|Alpha and some of the amazing things it can do (and some of the controversy already surrounding it). Here ‘s the return on a query for resistor values. Wolfram|Alpha
Check out this iPhone-controlled 5×7 laser matrix built utilizing 35 laser pointers, a PIC16F722 microcontroller, some miscellaneous parts, and a custom iPhone app.
Aaron ALAI’s EMF detector project looked so simple and fun I had to give it a try!
MAKE Advisory Board member Joe Grand got himself a T-Tech Quick Circuit 5000 PCB prototyping machine in the lab and has been messing around with using it to create PCB art. The third image is based on art by Neil Kronenberg, created for this year’s DEFCON conference, and the last image is by our very […]
From the MAKE Flickr pool … where no LED has gone before. Observe the maiden voyage of a tiny space-faring ship. Upon encountering the above-seen “magnetic anomaly” the ship’s onboard magnetic reed switch is activated. Chief engineer Origamiwolf explains the ship’s schematics – A resistor is added to each of the red LED branches; this […]
As the effort to save Wardenclyffe continues, I thought this Instructables on Wireless Power an appropriate real world example of the shear awesomeness and audacity of the late Nicola Tesla’s vision.
Over at NerdKits, Humberto shows how to build a piezoelectric-based sound meter fed to an LED display, using their USB NerdKit. By using the piezoelectric buzzer that comes in the kit as a microphone, and adding a transistor and a few other components, you can create a sound meter and send its output to an […]
