I have never had the need (and probably never will) for a device that could measure the amount of salts in a solution, but I found the circuit to be very interesting. This EC TDS PPM Meter project provides all the information you need to make your very own. "TDS is the measuring of the amount of salts in a solution. For alot of applications the amount
Our friends over at Amateur Logic TV goes on a tour of the Ameritron Amplifier Factory. Watch how a small production item is made. " A visit to the Ameritron Amplifier Factory. Learn how these popular tube type and solid state RF amplifiers are built."
Now I have bought cars based on gas mileage and kept the tires inflated correctly, the engine tuned, etc. but this guy has really taken it to the limit. Bajoos says it took 250 hours and $400.00. At $3.10+ per gallon in New Jersey really wouldn’t take long to see a payback. Read down towards the bottom and see what happens to the bugs and rain. It appears that ths
Do you have an old Macintosh computer laying around? Why not blow off the dust and follow these simple steps to do an upgrade to OS X? You don’t even have to spend hundreds of hours creating the source code for the custom microcontrollers that interface the system together since it is available for free on the site. 🙂 “This is a Macintosh 512k which I upgraded to run OS
Surveyor Corporation is working on some cool tech. They are building some of the most advanced robots available in a tiny package. Unlike most other companies they have a build journal that is open to the public that lets us follow the progress of the project. Of course this journal also documents the issues and stumbling blocks that they have has along the way. It looks like this little robot
The iPod Touch is hardware is very similar to the iPhone. Some smart guys at Touch Mods have developed a way to use the iPod Touch as a VOIP phone! Thanks John.
Lolly from Germany is a creator of one of the Tesla coils that was featured in the Musical Tesla Coil Collection article last week. Lolly has now created a video that walks through the technology he used to build his device. “Overview and demonstration of my SSTC Setup. The RF is generated with a Class-E MOSFET stage with controllable Frequency. The sound is modulated on the gate signal of
