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YO2LDK
ALEXANDRU PUIU
ROUMANIA
RESITA C-S

B-dul REPUBLICII
Bloc 6 Sc.3 Apart.40
POSTAL CODE 320127
MARTY.GIF, 4745 bytes
EMAIL004.GIF, 20923 bytes
[email protected]
Phone: +0040742301934
BARRA08.GIF, 42308 bytes
GPS tracking introduction
GPS tracking map
Vehicle tracking products
GPS receiver prices
Vehicle tracking customers
Asset tracking projects
GPS receiver technical data
Asset tracking links
Electronic circuit schematic


GPS datalogger GPS datalogger and GPS tracking system
The new GPS Cube GPS datalogger and tracking system has just been released by CommLinx Solutions. Its small size and self-contained battery operation make it ideal for both covert GPS tracking and a wide range of commercial and leisure activities. Unlike most competitive systems in this price range the GPS Cube has an integral GPS receiver and is supplied with all hardware and software necessary to retrieve GPS tracking data. Many competitive units are only a simple serial datalogger and require an external hand-held GPS receiver such as the Garmin or Magellan to form a complete GPS tracking system.

Note that all these links are external and CommLinx Solutions can provide no support on the circuits or offer any guarantees to their accuracy. Also note that some of the circuits are illegal to operate in most countries, please check your local regulatory bodies if concerned. Other circuits are dangerous to construct and should not be attempted by the inexperienced.

All 2005 schematics are available on a single page here.

PC related schematics

  • I2C printer port adaptor
  • RS232C Level Converter
  • Isolated Full Duplex RS232C Interface
  • PC Serial Receiver (57.6K Baud / TTL & CMOS)
  • PC Serial Port Receiver
  • Parallel Port Relay Interface
  • PC based 7-segment rolling display
  • DB-9 Connector to DB-25 (both RS-232)
  • Mac Serial Port (RS-422 DIN-8) to RS-232 DB-25
  • Parallel print capture system
  • ZX96-Mainboard
  • Modem Rockwell RCV336/ACF model V1433VQR ext.
  • Genius Mouse schematics
  • EEPROM programmer
  • Macintosh interface for X10 MR26A Wireless Receiver
  • Sound Card Interface with Tone Keyer
  • Ericsson phone to PC serial port interface
  • PC serial port receiver
  • Parallel port relay interface
  • ISA 48 I/O digital card
  • Jupiter card programmer
  • USB to RS232 Dongle
  • Commodore 64 24-bit parallel port interface with 8255
  • Parallel (Printer) Port Interface
  • RS-232 line monitor and loopback cables
  • The KD2BD Pacsat Modem
  • A Serial Infrared Remote Controller
  • PC Serial and Parallel Port Software and Interfaces
  • Interfacing 16x2 character :LCD to parallel port
  • RS-232 Protocol Analyser
  • Interface cable for Casio QV-200 digital camera
  • Radio clock for PC's
  • Serial to ECP interface
  • A PC-Based LowFER Frequency Synthesizer
  • General purpose 48-bit ISA parallel I/O card
  • Power from RS-232 port
  • PCI to ISA converter
  • WatchDog for ISA Bus
  • 4-channel 8-bit analog-to-digital converter for PC
  • Printer port ADC
  • Parallel port ADC based on MAX147
  • Analog Signal Acquisition for PC Printer Port
  • More accurate PC/AT clock
  • Getting power from RS-232 interface
  • Barcode scanner
  • PC thermometer
  • Dive computer interface
  • Parallel port servo controller
  • GPS receiver (Gamin, Eagle etc) to PC interface cables
  • Connect two CD-ROM drives to one soundcard
  • Headphone driving circuit for soundcards
  • Get power out of PC parallel port
  • Null Printer Adapter
  • PC speaker volume control circuit
  • How to get power from PC to your circuits
  • RS-232 surge protection
  • Simple RS-232 serial port buffer circuit
  • Get power out of PC RS-232 port
  • Sound Blaster Microphone Preamplifier
  • Sega 3D glass interfacing circuits
  • Convert Atari-style joystick to PC joystick port
  • Fake Joystick circuit
  • Using the joystick port as general purpose input
  • Connect other circuits to PC joystick port
  • Schematic of a standard PC joystick
  • Simple PC SmartCard reader
  • Fax to modem interface
  • PC interface for point controller
  • Linux Infra-red Remote Control (LIRC)
  • Compter microphone
  • Laptop Computer Serial Port Power Booster
  • Assorted computer interface circuits
  • HamComm Interface
  • Apple II/II+/IIe IDE Drive Interface
  • Basic Stamp I & PC Relay Controller
  • CompactFlash to IDE interface
  • ATX power supply schematic
  • X-Y plotter for PC
  • PC based cable tester
  • Hi-Fi PC Speaker System
  • IDE hard-disk interface for Amiga 500
  • How to construct Garmin GPS receiver interface cables
  • iRDA printer adapter
  • 160 Baud ALDL Hardware Interface
  • AT PC Power Supply 1
  • AT PC Power Supply 2
  • AT PC Power Supply 3
  • AT PC Power Supply 4
  • AT PC Power Supply 5
  • iLINK Interface
  • Digital Signals Decoding Interfaces
  • 9-pin null modem cable
  • Simple RS-232 receiver
  • +5v from RS-232 - LM78L05
  • RS232 - Lowe HF-225 interface
  • 24-bit parallel port interface with 8255 for Commodore computer
  • Supply Derives Power From 3-Wire RS-232 Port
  • 24-line PC digital interface (PDF)