Obstacle sensing walking stick for visually impaired persons

Avinash Gupta wrote an article detailing his smart walking stick project for visually impaired persons This project is designed to guide a visually impaired person to walk and avoid bumping into obstacles. Low cost ultrasonic rangefinders along with a microcontroller is used to measure the distance to obstacles and if they are close enough provide a feedback […]

Temperature controller for K-type thermocouple and MAX6675

Chris Holden of Nerd Club has written an article on their DIY temperature controller with a simple menu system: After what seems to have been a very long time, it was nice to poke more wires into a breadboard and make something actually useful for a while! Here’s a simple temperature monitor for our injection moulding heater […]

Car cassette player converted for MP3 play

Ivan Creations wanted to use his old car cassette player (that sounds descent) to somehow play MP3 files. He devised this hack using PIC16F877A to control CECL08D MP3 player and Grundig WKC 1704 RDS Infomat Cassette player with remote control via Blaupunkt RC10 remote. “The MP3 player output signal is hooked up to the cassette […]

Mars clock using PIC16F877A

What do you do if you have a spare LCD module with backlight, a weird 16 button keyboard, and a PIC16F877A microcontrering dust? If you’re avtanski, a monster Martian Clock immediately springs to mind. This thoroughly documented project shows you how to take these few common components and build a unique clock that features 16 […]