Dilshan R Jayakody’s Web Log

Intel HEX is an open file format to save machine code data. Today lot of compilers and EEPROM/Microcontroller programmers support for this file format as de facto standard. hex2file is a lightweight, command-line driven application to view and convert Intel HEX files into other file formats. I developed this application as a supporting utility for our on-going compiler/virtual machine projects. This utility supports four output formats which include CSV, plain- text, binary and numerical-text. hex2file standard numerical output in screen mode hex2file is an open source - free software and its available for both Linux and Windows operating systems. The latest version of hex2file utility is available to download at sourceforge.net – hex2file project page . The more details including project documentation are available at hex2file.sourceforge.net .

Nichrome-Wire Cutter is an essential tool for model aircraft constructions. We mainly use Nichrome-Wire Cutters to fabricate model aircraft wing assemblies, other than that Nichrom-Wire Cutters are used to cut wax, polystyrene materials and other similar kind of materials. In this project we construct electronically Controlled Nichrome-Wire Cutter. The main feature of this cutter is its (non mechanical) variable temperature controller. The temperature of the Nichrome-Wire is controlled using TL494 PWM controller. In this design TL494 is oscillated with fixed frequency and only varying factor is its duty cycle, in this given design R2 is used to control the duty cycle of the frequency. Duty cycle variation with R2 potentiometer This Nichrome-Wire Cutter requires 8V to 20V – 3A DC power source and 16.5V – 3A is recommended supply for this system. When constructing this system makes sure to solder and connect all the components properly, improper connections may cause oscillatio...