T&L Publications

Mike,<p>I built a very simple I/O with relay driven off the serial port. I used Qbasic to run the system but I'm sure you could easily convert to VB. <p>The circuit is very simple and is based on a Ray Green article in N&V several years ago. The total cost of the project is around $10 including ...

Thank you to every one who has replied!<p>I have followed through with as many of all your suggested investigations as I could.<p>Here is what I have determined:<p>1. I am convinced that the problem is internal (not external RF interference of some kind). 2. There are hundreds of possible syptoms a ...

It is a little expensive, but the link below will take you to a real neat USB interface module with tutorial on programming it VB, C++ etc. If I had the $$ I would go for it.<p>
USB Interface

Jolly Roger<p>Did you build your strobe yet? If not, you may want to check out this kit.White LED Strobe Light Kit

Wayne, Please see the link to the "Ring Generator Circuit" above. This is what I intend on driving the ringer with. <p>To drive the ringer with that generator, if I understand you correctly, I need to:<p>1. Connect the red and black ringer wires to the generator output. 2. Place a .5mF 250...

I have an old Western Electric type P3A ringer which has 4 wires on the coil (red, black, slate and slate with red stripes). Please see the pages below for information and photo.<p>I would like to ring the ringer with the Ring generator circuit also shown below.<p>My question is how do I connect the...

Large Sony tv with nice clear picture and audio with the following problem:<p> At perfect cyclic timing intervals (like 3 close scratches on an LP record) three fixed "radio interference" horizontal bars appear across the screen. <p>The audio disturbance accompanies the bars. 2 of the bars...

A slight modification to the design below should work. Close the contacts with your laser sensor circuit instead of water.<p>It has the SCR that Russ talked about for latching.<p>SCR Alarm Latch

Gentlemen:<p>I followed up on your suggestions and discovered the following link. <p>thank you.<p>Visual Basic for Applications Tutorial

John Paul<p>I waited a day for some of the more experienced to reply, they haven't yet so here it goes:<p>Use your reed relay to close and open a larger one. This is a cumbersome solution but it should work.

Thank you Mr. Al and Bodgy for the information which I will put to good use!<p>As for using my work(*) computer during breaks, it looks like the only programming I can do is with MS DEBUG, true? From Bodgy's description of MS DEBUG it hardly sounds like a reasonable option, but I would be willing to...

Programming software (BASIC) came along with older DOS operated computers. You could sit down at any computer and write a program. <p>Nowadays: Programming software (VBasic, C++, Qbasic etc) is typically not on most office computers. Nor is it on the computers of typical family or freinds.<p>The bot...

Mr. K & Dale:<p>Thank you for your advice!<p>I built the interface and plugged it into the jack upstairs. It turns out that the jack upstairs is wired in parallel to the one in the kitchen( red & green lines).<p>It worked fine but with the following problems:<p>1. The interface exists in the...

This weekend I am going to try to build an interface circuit similar to the one presented on the web file below. <p>The question I have is:<p>Is it necessary to connect to the telephone as shown in the circuit below, or can I plug into another unused phone jack and pick up the audio signal? <p>The l...

please see my post above, how do I get a quote from josmiths post, I tried to quote his "basic stamp click basic stamp click etc." but it came out blank.