T&L Publications

Morse w/ PIC16F84A <p>Last night I “wrote” (copied and modified from “Easy PIC’n for Beginners”) a routine for my PIC. It didn’t work. I am trying to blink out a simple two word Morse code signal on an LED. I need to vary the on and off time for dits and das and pauses. The problem is the Delay subr...

I pulled a small clock off of an old computer my 9 year old son found in a garbage pile.<p>The clock is about 1/4" wide by 1/2" long, bright metal case and has has 4 pins. It is marked: TXC 60.000MHZ 850NC 9435.<p>Is there any way I can interact with this component? I would like to get som...

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by Chris Smith: Long Coils of fine copper wire wound like a transformer over ferrite cores, and a clean op amp with gain of 100 or so should be able to read brain waves fairly well...

I use the DRDAQ A/D converter with PC oscilloscope software to graph voltage traces etc on my PC. I would like to graph heartbeat and brain waves. Does anyone no a way to get brain waves and or heart beats into an electrical signal that I can plug into my DRDAQ?

I need to control (turn off and on ) a set of 6 or so relays with my 386 computer. Is there an inexpensive package (software,controller, and relays) available to do this?