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 | Remote Control System This simple system that I'm
working on is based on Microchip's PIC16F84 microcontroller in heart of the
remote control unit and PC as master. Currently I've developed the remote
control unit with 9 inputs/outputs (I use units with 4 relay outputs and 5
digital inputs) and RS232 serial communication with PC running host
software. Using RS485, greater number of remote control units can be
connected to the PC (the number depends on tranceiver used). PC master
periodically polls remote control units and reads status of their inputs.
Control of relay outputs is executed aperiodically. The master software is
developed in Borland Delphi for Win-platform, and in C using Gtk Toolkit for
Linux with X-Window. |
| MicroPLC A small PLC designed using PIC16F84, with 5
digital inputs and 4 relay outputs (the same module as above).
PLC can be programmed through serial RS-232 port, and it recognises basic
logical commands of STL: A, O, AN, ON, A(, O(, S, R, SU, RU, =. The program
is kept in data EEPROM and its maximum length is 68 instructions. Inputs are
optocupler-isolated, and voltage levels of inputs can be chosen by
resistors. The software for PC is developed in Borland Delphi. |
| Double timer module with adjustment range 0-20 sec, and with
t1<=t2. The module contains two microcontrollers
PIC16F84. The first microcontroller implements all functions of timer, reads
inputs and controls two relay outputs, and the current setting of time sends
through serial link to the other microcontroller which shows that setting on
display with three digits. |
| Electronic Morse Code Keyer which besides common capabilities of
electronic keyer has capability of keying text from the computer,
using custom terminal program. You can look at the article
in Bosnian language about this keyer which I published in "Radio
T9", our radio amateur magazine. The file keyer.hex for this keyer you
can find here. |
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Inverter 12V/220V (UPS) with microcontroller, which has capability
of detection of power supply outage, and empty battery, as well as RS-232
communication with computer, which enables to shut it down. The
project is in development phase.
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RS232/RS485 converter Designed in order
to provide connection for multiple remote control units to serial port of
the ordinary PC.
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Parallel Port Control Module This is a very simple module that
uses PC's parallel port for 8 digital outputs and 5 digital inputs. |
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