Showing posts with label Computer-Interface. Show all posts
Showing posts with label Computer-Interface. Show all posts

Thursday, December 11, 2014

Computer Data Interface - delabs

The PC is now an economic and common equipment at home or office. Due to Open source and GNU Linux, many professional programs and environments are easily accessible. To interface it to the real world is a step in learning Automation and Robotics.

Computer Data Interface - delabs

Computer Data Interface - delabs

In Automation we have both Industrial and Home. You can start with home automation, as industrial automation is more complex. But in Home Automation, Safety First should be emphasized, Any neglect in care of electrical hazards will neutralize any advantage of Home Automation.

Printer Port

Do not apply voltage above 5V to any pin of printer port, ensure earthing is good, use opto couplers for inputs and outputs if you are not sure. wrong use will damage motherboard, these circuits should be used only if your basics are very sound.

delabs Technologies 16:16 30-Mar-07

Analog Interface for PC Ports.
Control Interface to PC Ports.
Project Source - virtual-instrumentation - Examples of Computer Interface to Instruments

Friday, April 18, 2014

Control Interface to PC Ports

PC based Instrumentation is easy to implement using tools and cards of National Instruments - Test and Measurement. Most instruments can communicate with PC on the GPIB interface.

You can start by learning to use the parallel port and serial port. MIDI-Game port also has enough to help you start, learn computer interfacing at home. Try a small easy experiment RS-232 Powered Temperature Sensor.

Control Interface to PC Ports

This can get you started too. The few examples above show an instrumentation - Logic Analyzer 'Like' interface and a relay-display driver circuit. They are examples i tried for students to try out and learn.

Control Interface to PC Ports.
Project Source - virtual-instrumentation - Examples of Computer Interface to Instruments

Tuesday, February 21, 2012

Analog Interface for PC Ports

Here are examples of an analog Input and Output interface for Printer Port. There are two visual basic demo programs with source to test out idea.

Analog Interface for PC Ports
USB and wireless interface to PC may be more in vogue, but a higher speed is possible in printer-port. For analog and digital fast data acquisition, PC cards to full Access to PC bus are the best choice.

Analog Interface for PC Ports

The Sensors and Actuators interfaced with a computer form a basic automation system or even a robot. So learning to interface Sensors (input devices like a thermocouple or pH sensor) and Actuators (output devices like a motor or heater) with a PC is the best way to start. It is by studying examples and experimenting cautiously can one learn the science, book reading alone will never help.

See the Hardware Book connector details, cables, adapters, etc. The RS232-Serial Port, The Parallel- Centronics port, The USB-firefire port are good to start with. Then you can interface by LAN or Wireless- LAN or TCP/IP-Internet to make Robots or Automation extend to multiple places and computers. The possibilities are endless, imagination is the limit for students. But entrepreneurs need to be practical and only make equipment that have a utility and sensible market scope.

The circuits and code have some errors, The documentation is not complete.
DVM = digital volt meter MVS = milli volt source