Single Digit Voltmeter with LM311
I wanted to design a logic probe as a tutorial, but there were many good ones in the web so i have tried to design a single digit voltmeter. This circuit is a design,...
Category: Interface-Crcuits
Printer Port 256 Relays 16K Dot Matrix
Using this circuit on Printer Port, one could drive 256 Relays or 16K LEDs as Dot Matrix display. It can be used to drive a Large size multiplexed LED dot matrix display or Latched...
Simple Water operated relay
This was done in my early days, i have upgraded it, it ought to work, reduce the number of transistors to make it less sensitive, also a lower value in place of 10M will...
Digital Interface Part Two
Continuation of Digital Interface Discussion, only my part of the communication here. This will help you understand some common methods and issues.
