I have never seen a project made with a Diffraction Grating before, but this LEGO Diffraction Grating Projector project has a great looking effect. It’s designed by Carl who was featured here before for his RGV Laser System. Those LEGO universal joints have a very wide working angle (watch the video to see what I am talking about). Thanks for sending it in Carl.
Victor Youk from Razor Concepts has designed a nice DTMF Decoder Board Project. The project is based around the MT8870 DTMF Decoder chip. With this project you will be able to control something from around the block or around the world using a simple telephone. Nice feature of using the MT8870 is you don’t need to program anything, just purchase all the components, stuff them onto a breadboard and have
Thanks to Rocky Mountain Tracking for sponsoring the contest this week. They will be providing a Smart Tracker to the winner. The Smart Tracker is a GPS device that is mounted in your vehicle and can be used to track your vehicle in real time. Great if your car gets stolen or you forget where you parked it. 🙂 You can use the NavIQ mapping software to pull up where
Here is a DIY Digital Light Dimmer that uses 2 push buttons to adjust the brightness output. Full details can be found here. Thanks “The light level can be adjusted with two push-buttons “Up” and “Down”. Controller in this application is PIC16F84 that drives BUZ11 mosfet. Dimmer is tested with a light bulb 12V/4W and mosftet didn’t get even warm (which was expected since the datasheet says: 50V/30A).”
I have seen the writing on the wall for many years now. It is now possible for a single person or a small team to crank out physical items just like the big players with huge factories. In this new age where circuit designs can be cranked out on the coffee table and sent out to China for production the next day is fantastic! The internet has shortened the gap
Long time Hacked Gadgets reader NatureTM has just completed phase 1 of his Hard Drive Clock. It’s using an Arduino to keep track of time and control the clock display LEDs. After accidentally letting out the magic smoke from the hard drive controller he decided to improvise and use a hobby RC motor speed controller. This clock will be super accurate when it is complete since it will eventually be
The next installment of the Dune Buggy Electric Conversion project is in. Since we brought you the 1st installment about a month ago there has been lots of work put into it. There are lots of interesting techniques that can be used next time you are working with some high current applications. I like the way the wire lug ends were made rather than bought. The frame is sure to
