Computer
related circuits 
related subjects: PIC's,
Basic stamp, RS232-485 |
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Analog-to-digital- and digital-to-analog converter for USB |
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Audio-video switch an 8-input x-output audio/video switch module to be
controlled from a computer, for example from the parallel port |
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Bus I2C en Français |
| Centronics
port D/A converters and low-pass filter 7524, R/2R |
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Controlling LEDs (Light
Emiting Diodes) with Parallel Port |
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CPU Clock Indicator |
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DB-9 connector to DB-25 (both RS-232) part of
Useful tools for RS-232 interfacing |
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DMX 512 printerport interface page This page contains schematics and
software to build your own cheap 64 channel DMX 512 printerport interface. It
also contains the schematics for a 4-way DMX booster / splitter and a 12 channel
DMX flasher. These designs are based on Microchip Pic 16F84 microcontrollers and
very easy to build, schematics |
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DS1620 Programming
Tool |
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DS1621 PC thermometer
This incredibly simple thermometer plugs on any free serial port. Does not make
use of any programmable components as microcontrollers. It gives temperature
readings accurate to 0.5°C with no calibration |
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DS1621 to a Basic
Stamp Interfacing the BASIC STAMP 2 with the DS1621 Thermometer circuit |
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DS1621 to a PIC16F84
Interfacing a DS1621 Digital Thermometer with a PIC16C84 circuit |
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EIB/RS232 en Français |
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Fan speed temperature
regulator |
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Fan speed temperature
regulator Temperature Controlled FANregulators |
| How to
get power from PC to your circuits |
| How
to use your RS232 or IRDA port for Remote Control |
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Infrared remote control of your PC the hardware and software required to remotely control
your PC by means of any standard hand held remote control unit |
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Interfacing Digital-to-Analog converters pdf file |
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Interfacing relays and transistors pdf file |
| Isolated
full duplex RS232C interface this self powered interface circuit electrically isolates the TxD and RxD lines from the PC serial port and protect
the PC from direct connection to hazardous voltages |
| Isolated
full duplex RS232C interface this self powered interface circuit electrically isolates the TxD and RxD lines from the PC serial port and protect
the PC from direct connection to hazardous voltages |
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Lightning flash counter contains instructions to build a lightning flash counter and how to interface it to your PC |
| Logic analyzer using the PC's parallel port record up to 8 channels, use any parallel port, sampling at up to 1 million samples per second, record 32768 samples |
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LPTCAP parallel port print capture system LPTCAP is a hardware and
software solution which allows an IBM-compatible PC running MS-DOS to capture
print data sent by another PC, or any device with a Centronics parallel
printer interface |
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Multi Wire Cable Tester A multi wire cable tester with a separate LED
for each wire. Will show open circuits, short circuits, reversals, earth faults,
continuity and all with four IC's |
| Null printer adapter
simple adapter for PC parallel port to think that there is a printer connected
to computer |
| Parallel
PC Interface |
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Parallel port relay interface |
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Parallel port servo controller |
| PC-based DC motor
speed control PC generated Pulse Width Modulation (PWM) for DC motor speed control
circuit |
| PC IR
remote control GP1U52X, NE555 |
| PC ISA bus Analog-to-Digital, Digital-to-Analog card |
| PC
printer port relay board 8 relays |
| PC
serial port receiver designed to control a 32 channel Christmas light show from the PC serial port
circuit |
| PC
thermometer Measures one or two (indoor and outdoor) temperatures |
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Power for
your circuits from RS-232 signal lines This text tries to clear out the
mystery of how to get power out of PC serial power |
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Remote control of computer IR remote control of computer |
| Remote
control for Windows IR control for Windows, the hardware and software required to remotely control
your PC by means of any standard hand held remote control unit |
| RS 232 laser transceiver this circuit allows any two computers with serial (RS-232) communication capability to communicate over 200 meters using a laser
beam |
| RS232 to IrDA converter |
| RS232C level
converter MAX232, A standard serial interfacing for PC, RS232C, requires
negative logic |
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RS232
- RS485 - USB interface circuits |
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RS232 to RS485 Converter
RS232 connector compatible with PC, TxD and RxD translated from RS232 to RS485,
RS485 signals output on 6 way modular jack, Indicator LED(s) to show
communications traffic |
| Serial Infrared
remote controller This is a simple, cheap device that can be connected to
any serial port to control most components that have infrared remote controls |
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Serial Port A/D-converter This circuit is a simple 8-bit analogue to digital converter
circuit which is connects to PC serial port. The circuit is based on TLC548
A/D-converter chip |
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Serial Port A/D-converter
This application note provides an example of interfacing an A/D converter to a
PC using a standard serial port. The CS lines and SCLK lines are emulated by the
RTS and DTR lines respectively. Conversion data appears on the data-set-ready
(DSR) line. Example C code is given to demostrate the application circuit, PC
Serial Port Drives 12-Bit A/D Converter, pdf file |
| Serial port controlled IR transmitter
This is a programmable infrared (remote control) transmitter, which can be
controlled from a PC serial port. It is capable of sending many remote control
formats, including the Philips RC-5 standard |
| Serial to parallel converter AT89C2051,
The converter runs at 9600 baud, and outputs each byte received on a centronics
style parallel port, together with a nominal 50 microsecond strobe. The
converter buffers up the bytes received if busy is active, and is bidirectional |
| Simple circuit and
program to show how to use PC parallel port output capabilities |
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TTL to/from
rs232 signal conversion |
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Universeller AD-Wandler auf
Basis des TLC 549 |
| USB designer
links |
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USB
interface for parallel LCDs |
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USB to RS232
converter The USB to RS232 converter using the FT8U232AM and a Maxim-IC
MAX235 |
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USB to RS232 Dongle FT232AM, This chip converts USB to a standard high-speed
serial port. The bonus with FTDI is the drivers are already written for you. All
you have to do is design the hardware and download the serial USB drivers from
FTDI's web site |
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USB2LCD II project USB2LCD II project, USB interface LCD project |
| Visual Basic
(DLL's) and PC interfacing this tutorial shows you step-by-step how to write your own dynamically linked library (DLL) that you can use in your VB programs |
| WEB thermometer
This little simple thermometer can be used to monitor and log the temperature
anywhere in a radius of 20 meters from your computer |
| WEB thermometer
measure your own temperature and display it with a WEB browser, WebThermometer
+ NetThermometer are a couple of utilities to measure the temperature remotely
on the browser via HTTP or TCP/IP |
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Horizontaal |
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Last updated on:
2011-01-15
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