T&L Publications

I know that there was a slight difference between a 7474 IC and a 74LS74 IC but what is the fifference between a 74LS74 and a 74ALS74? Is it one of nomenclature? Or is there a difference in loading and 'pinout'?

I know what a cap does. (I've replaced more starting and running motor caps than I could shake a stick at) I know there are different types of caps but how does one calculate what size capacitor is needed for an electronic application? Is the desired end result worked back from? How come on one unip...

Thank You for replying to my question. There will be 3 stepper motors controlling one axis each. nodding, turning and cocking. All are light loads so I don't need the heavy duty CNC type steppers. Analog to digital. Thank you. That is a start. Analog to digital. HMMMM. I would start by taking the ra...

Hello. Very briefly and generally could someone give this pulley and lever and LED kind of guy an idea of how to make a 3 axis stepper motor set stop where a constructed 3 axis joystick is stopped at? The joystick as constructed by me will not be pretty but it'll work. (It is for about 2 1/2 hours f...

Way to go Scott. Was it worth the hassle? For projects like this I am a little like Fabius Maximus, I tend to collect everything that I need before trying to build anything. Your info is part of that collection. Of course in real life situations such pre-project assimilation ain't possible so it is ...

The website given at 'thinkbotics.com' for the Printed Circuit Board (PCB)for the control of the Jacob's Ladder device given in the December issue of N+V mag. doesn't show the PC Board or respond to e-mail questions about its "promised" avilability. I really don't want to get into making m...