Converter from USB to LPT parallel port (25 pin SubD receptacle) with hardware virtualization at input/output instruction level Supports all parallel port modes named SPP, EPP and ECP, 16 Byte FIFO depth USB Low Speed (1.5 Mbit/s signaling; 1 kByte/s for input/output instructions) Supports USB suspend mode with reduced power consumption Full open-source, even for schematics and PCBs
In particular laptop works well with a circuit 🙂 USB port Lpt port çevriy Windows 98-Me-2k-XP-Vista driver files there is also the source. C. H. Hex code and eagle crafted with PCBs schema files are
USB to LPT
Source: http://www-user.tu-chemnitz.de USB to LPT Converter Circuit with Atmel ATMEGA8 alternative link:
Password: 320volt.com
Published: 2008/04/14 Tags: atmega8 projects, avr project, microcontroller projects
Adjustable DC DC Converter Circuit SG3524
Supply most laboratory power supplies maximum output current of 2 A to 3 A (Depending on model), while the output voltages usually up to 20 V or are more adjustable. Is, for example, at 6 V a current of 4 A needed is the power supply no longer able to deliver them, although the required performance far below the maximum output power of the Power supply is. A remedy ensures the presented DC DC power converter, which simply between the power supply and the consumer with high current consumption to is off.
SG3524 DC DC Converter Circuit
Source working link: https://www-user.tu-chemnitz.de/~heha/basteln/PC/USB2LPT/
Hi, Thank you for feedback. Link updated.