The HAM Radio Technician License is the entry level licensing for Ham Radio operators to get their call sign and the ability to talk over the air. On August 13th (after an abbreviated regular meeting) we’re going to hold our very own study group to prepare to take the Technician’s License test. We won’t be administering a test, but we will be covering where and when you can take the test and we’ll be covering topics covered on the test. If you’re interested in learning about HAM radio please join us at 7pm in the Nolan Building at Christian Brothers University. There is no cost involved. (Donations are welcome)
The space is approximately 2000 square feet and used to be a TV repair shop. The great thing about that is the fact of three phase power already being run to the location! It already has workbenches on one wall, and has a storefront that we could re-purpose for other things. You can check out simulated 3D photo of the main workshop at photosynth. There is just a lot to be said for the potential of the space. From the layout of the place, we would be able to build us a server room, possibly a kitchen, a storage closet, plenty of workbench space, individual cubbyholes, a lounge, and a maybe even a learning lab. We will be discussing all of this with everyone at the next couple of meetings to get ideas for potential layouts and what we can do to make the most of what is available. The owner has even generously agreed to give us the first month for free and $800/mo for the first year before raising the rent to the requested $900/mo. If we can get enough paying members interested this it really could become a reality quite soon.
Want to learn how to solder? The Midsouth Makers group will be hosting a beginners’ soldering workshop on Friday, May 14th at 7pm in Room 241 in Nolan Hall at Christian Brothers University campus, 650 East Parkway South, Memphis, TN 38104. If you wish to buy a soldering iron it will be $10, but only $5 if you bring your own soldering iron or just want to borrow one. We are a newly founded non-profit group looking to meet, teach, and work with others on DIY projects.
We will have a kit that includes a 555 timing chip and everything you need to build a small circuit that lights an LED when you press the button. All parts including batteries are included. Each kit contains the timing chip, 3 resistors, a button, 2 batteries, a LED, a capacitor, and perf board to solder everything to.
The circuit that we worked on was a 555 Timer based One-Shot (see monostable multivibrator.) The purpose of this circuit is to provide a steady, constant, digital signal that goes high for a predetermined amount of time no matter what the input trigger does and then shuts off until triggered again. In other words, no matter how many times you press the button on the circuit, the output generated will remain high for the set period and go off. Once it is off you can then press the button and it will repeat the same thing again. In the electronics world this is a very important, yet simple circuit. The 555 Timer is used in almost anything that requires a simple clock. Even more important for the purposes of our workshop, the circuit has several soldering points, and involves some creativity with component placement.
If you have any other questions about the circuit, feel free to shoot me an e-mail at [dhess at midsouthmakers dot org] and I can attempt to explain (or confuse you) even more. The links for the circuit diagram and Fritzing file should be below. If you have any issues getting to the files, just leave a comment.