Ultrasonic Distance Sensor with PIC16F630 Microcontroller

Posted on Leave a commentPosted in C / C++, Hardware, Microcontroller, Software

The LED distance warning sensor includes a HC-SR04 ultrasonic module connected to a PIC16F630 microcontroller. This simple circuit flashes the diode when an object is within 1 metre with the relevant rate of its distance; the closer the faster.

Raspberry Pi Web Server – RGB LED Control Over The Internet

Posted on Leave a commentPosted in Hardware, Java, Linux, Raspberry Pi, Software, Web Server

This Java application is to demonstrate how to control a tri-colour (RGB) LED from the internet. Tomcat servlet is running on a Raspberry Pi and the user can interfere with the Pi’s GPIO’s (General Purpose Input Output) from the web browser. A complete hardware and software setup is included in the write-up.

Controlling The Raspberry Pi's GPIOs From The Internet