I would like to build Optoisolated RS232 interface. I’vesearched a little bit, and I came across your design: RS232 with Opto-Isolation However presented schematic is of poor quality – I’mRead More
How can I get a software for an electronics work bench for my pc. mail from EA I did not understand about the ‘electronics work bench’ pc based instrument. TryRead More
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 dotRead More
This is a Test Circuit for Logic Analyzer software, with the Simple port circuit. The VB Logic Analyzer works, but is just an example program to test and learn. TheRead More
Printer Port Circuit to see the inputs logic state and drive a few outputs. The preset control program helps test out the circuit operation. Use safe 5V Levels. Simple PrinterRead More
This circuit uses a R-2R Ladder Resistor Network to convert digital data from PC Printer Port to Analog. This can be used as a Millivolt Source or Programmable Power Supply.Read More
This is the standard configuration on how to Interface a uC like 8051 to PC RS232 with MAX232A. The UART or Serial port was not present in 8049/8749 chips whichRead More
A PC based Analog Voltmeter. The Printer Port or Parallel Port Interface is used to acquire high resolution analog data using ICL7135. This is a method of getting analog dataRead More