Prototype of Rockmite Keyer a Success!

The Rockmite has a new keyer that should last longer, and brings it one step closer to having a modular interconnect ala the proposed Open-Headset-Interconnect-Standard

Today I Learned:

You can superglue video game switches to battery cases!

From that point, it was pretty easy to kludge jumpers over to the three-wire keyer, converting it to the keyer that will eventually contribute to the Rockmite keying system. I had brought out two ground wires, one each for the di and da buttons. They each went into a single two wire connector that was, in turn, wired to on lead of each switch. The original di and da wires were jumpered to the other corresponding switch terminals.

And, here it is in action!

I'm not using the RJ-45 breakout board inspired by the open headset standard yet, but this will probably be the board placement

Finally, since the red yam features so prominently in a number of the project pictures, (I typically use it as a light duty insulator and/or standoff), I mentioned that we could use it as a battery. Apparently I hadn't brought this up before? The 11 year-old kid, (Daize), was enthralled.

What's next?

Figure out the placement of the third switch: probably on the bottom of the batter; case.

Make the initial prototype via two breakout boards, (maybe use a rubberband to attach the one seen above at first, and just use the screw terminals on the back of the board for the radio-side breakout board.

In operations news, the radio is back to being detected on the Reverse Beacon Network:

Comments

The Valentine's Day Magnetic Monopole

There's an assymetry to the form of the two Maxwell's equations shown in picture 1. While the divergence of the electric field is proportional to the electric charge density at a given point, the divergence of the magnetic field is equal to zero. This is typically explained in the following way. While we know that electrons, the fundamental electric charge carriers exist, evidence seems to indicate that magnetic monopoles, the particles that would carry magnetic 'charge', either don't exist, or, the energies required to create them are so high that they are exceedingly rare. That doesn't stop us from looking for them though! Keeping with the theme of Fairbank[1] and his academic progeny over the semester break, today's post is about the discovery of a magnetic monopole candidate event by one of the Fairbank's graduate students, Blas Cabrera[2]. Cabrera was utilizing a loop type of magnetic monopole detector. Its operation is in concept very sim

Cool Math Tricks: Deriving the Divergence, (Del or Nabla) into New (Cylindrical) Coordinate Systems

Now available as a Kindle ebook for 99 cents ! Get a spiffy ebook, and fund more physics The following is a pretty lengthy procedure, but converting the divergence, (nabla, del) operator between coordinate systems comes up pretty often. While there are tables for converting between common coordinate systems , there seem to be fewer explanations of the procedure for deriving the conversion, so here goes! What do we actually want? To convert the Cartesian nabla to the nabla for another coordinate system, say… cylindrical coordinates. What we’ll need: 1. The Cartesian Nabla: 2. A set of equations relating the Cartesian coordinates to cylindrical coordinates: 3. A set of equations relating the Cartesian basis vectors to the basis vectors of the new coordinate system: How to do it: Use the chain rule for differentiation to convert the derivatives with respect to the Cartesian variables to derivatives with respect to the cylindrical variables. The chain

More Cowbell! Record Production using Google Forms and Charts

First, the what : This article shows how to embed a new Google Form into any web page. To demonstrate ths, a chart and form that allow blog readers to control the recording levels of each instrument in Blue Oyster Cult's "(Don't Fear) The Reaper" is used. HTML code from the Google version of the form included on this page is shown and the parts that need to be modified are highlighted. Next, the why : Google recently released an e-mail form feature that allows users of Google Documents to create an e-mail a form that automatically places each user's input into an associated spreadsheet. As it turns out, with a little bit of work, the forms that are created by Google Docs can be embedded into any web page. Now, The Goods: Click on the instrument you want turned up, click the submit button and then refresh the page. Through the magic of Google Forms as soon as you click on submit and refresh this web page, the data chart will update immediately. Turn up the:

Copasetic Flow

Search This Blog