This solar tracking system uses an antenna motor which is normally used to spin an old school roof mounted antenna around. The structure is home made from some satellite dish parts and unistrut as the main frame of the solar panels. I was expecting to see several light sensors and some circuitry to see where the sun was and constantly follow it like we have seen before. But fanman1981 actually
How do you detect the actual current from your 22,500uF, 450VDC capacitor bank when you pulse discharge it? Well Norman from Procrastinatus shows us his method. Inductive Current Sensing is done using a Rogowski coil which is wrapped around the high current output of the capacitor bank. A DSO is used to capture the data so the short event can be analyzed. Norman entered this into the Tektronix scope competition
The 555 Contest that we told you about back in January is now over. Chris and Jeri will be on the air later today announcing the winners live. “Jeri and I have decided to announce the winners on-air, on Wednesday, April 20th. We will be uStreaming the entire show and will have a chat room running the entire time. This link will get you to the IRC chat and the
Take a look at this cool POV clock project that PyroElectro.com did. Please lots of other POV projects below, all of these projects are cool but the Pyro Electro POV Propeller Clock is probably the best documented one I have seen! It uses a PIC 18F252 Microcontroller to run the show and fan to spin the controller. IR light is used to keep track of where the spinning circuit board
The recently unemployed Dave Jones from the EEVblog has done a very extensive investigation of an issue he noticed which is the Noise an Oscilloscope Probe generates when Physically Shocked. I would have guessed it was just the switch that was not keeping a good contact when experiencing the jolt but watch the video to see what the culprit was. I remember having a similar (but totally different) thing happen
Just by adding a few wires you can use the BlinkM as a small Arduino. So next time you need a simple microcontroller that can be stuffed anywhere you might want to use a BlinkM. “The BlinkM board doesn’t have nearly the I/O pins and other features of a real Arduino board. But it is very tiny. Here are its capabilities: – 0.4″ square (MinM), or 0.6″ square (BlinkM) –
Looks like there is a new DIY PCB Etching Solution. If you have some Hydrogen Peroxide, Distilled White Vinegar and Salt you are ready to give it a try. Via: NBitWonder “Vinegar – Distilled White Vinegar – diluted with water to 5% acidity (Meijer) Peroxide – 3% solution (Meijer) Salt – to taste. (Just keep adding it until the “fizzing†continues all by itself). Hydrogen peroxide is what
