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Professor Mark Csele: Ohio Scientific Computers – Circuit Schematic
Professor Mark Csele: Ohio Scientific Computers
This machine was near-and-dear to me as it was my first real computer, an Ohio Scientific Superboard II. In 1979 I got my machine, a 6502-based single-board com...
Homebuilt video digitiser MkII circuit description – Circuit Schematic
Homebuilt video digitiser MkII circuit description
A "video-digitiser" (also known as a "frame grabber") captures still pictures frames from a TV set, video camera, or video recorder, etc. , and forwards them to...
MkI Video digitiser circuit description – Circuit Schematic
MkI Video digitiser circuit description
A "video-digitiser" (also known as a "frame grabber") captures pictures from a TV set, camera, or video recorder, etc. , and forwards them to a computer for dis...
model RC as USB Joystick – Circuit Schematic
model RC as USB Joystick
Model aircraft pilots like to use PC-flight-simulator software to train the handling of model aircraft without the risk of the loss of real models. It makes sen...
USB Joystick – Circuit Schematic
USB Joystick
It makes sense to build your own individual joystick. Especially the flight simulation enthusiasts like to build cockpit parts with the look and feel of origina...
RC PIC – Circuit Schematic
RC PIC
This circuit interfaces a standard RC-control to a standard PC game port, see figure 1. The main target was to use the interface for the FMS flight simulator. T...
TV video output for the EB675001DIP – Circuit Schematic
TV video output for the EB675001DIP
This application note describes creating a dumb framebuffer with PAL composite TV output for the EB675001DIP. The design uses a minimal number of additional com...
Attaching a GPS module to the EB675001DIP – Circuit Schematic
Attaching a GPS module to the EB675001DIP
The user CPLD is only used in this design to interface the LCD module and is the same code as used in the Attaching an LCD module to the EB675001DIP application...
Four Port Serial Adapter for the EB675001DIP – Circuit Schematic
Four Port Serial Adapter for the EB675001DIP
This application note describes the addition of a quad serial controller to the EB675001 Module. A multi source quad Universal Asyncronous Reciver and Transmitt...
Interfacing circuit – Circuit Schematic
Interfacing circuit
After doing some experiments with the rotary encoder directly connected across the keyboard switches, I found that the keyboard controller IC (an old Intel P804...
Computer-Controlled 4-20mA Current Loop – Circuit Schematic
Computer-Controlled 4-20mA Current Loop
In some industries, to control the some equipments they are use computer-controlled 4-20mA current loop. This current loop is used transmit  a signal over a.....
Computer-Controlled 4-20mA Current Loop – Circuit Schematic
Computer-Controlled 4-20mA Current Loop
In some industries, to control the some equipments they are use computer-controlled 4-20mA current loop. This current loop is used transmit  a signal over a.....
Visual Basic & AVR RS232 interface – Circuit Schematic
Visual Basic & AVR RS232 interface
On this project we will control anAVR microcontroller (MCU) via Visual Basic 6. The applications of this circuit is countless. You can make, anything you want, ...
Visual Basic & AVR RS232 interface – Circuit Schematic
Visual Basic & AVR RS232 interface
On this project we will control anAVR microcontroller (MCU) via Visual Basic 6. The applications of this circuit is countless. You can make, anything you want, ...
Simple VGA/Video adapter with ATmega AVR – Circuit Schematic
Simple VGA/Video adapter with ATmega AVR
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Simple VGA/Video adapter with ATmega AVR – Circuit Schematic
Simple VGA/Video adapter with ATmega AVR
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Computer RS-23Z serial interface current loop circuit – Circuit Schematic
Computer RS-23Z serial interface current loop circuit
This circuit is used in computer RS-232 serial interface and current loop circuit interface, it can transform voltage singal into 20mA current singal, the maxim...
Computer RS-23Z serial interface current loop circuit – Circuit Schematic
Computer RS-23Z serial interface current loop circuit
This circuit is used in computer RS-232 serial interface and current loop circuit interface, it can transform voltage singal into 20mA current singal, the maxim...
TV as display terminal interface circuit diagram – Circuit Schematic
TV as display terminal interface circuit diagram
The interface circuit is added between computer standard video signal output terminal and TV. It can enlarge standard 1V(Peak - peak) video signal am to 3V(Peak...
TV as display terminal interface circuit diagram – Circuit Schematic
TV as display terminal interface circuit diagram
The interface circuit is added between computer standard video signal output terminal and TV. It can enlarge standard 1V(Peak - peak) video signal am to 3V(Peak...