Abstract This paper presents design and development of an Automated Home Control System (AHCS) using mobile phone. A cell (mobile) phone acts as a modem for the control of electrical home appliances. This is achieved when the mobile phone number is dialed and an appropriate command button is pressed. The paper demonstrates how to develop […]
Project Summary Build yourself a single shot Pic Micro Controlled by stable Relay FEATURES 1. One touch activated for on or off 2. Open connections for other sensors 3. 10 -12 volt operation 4. Led indicators for on off status 5. Can be Rf controlled 6. Can be serially controlled 7. All code Flow charts […]
Step 1: Sensor assembly The sensor unit consists of an infrared light-emitting-diode (IR LED) and a photo diode, placed side by side, and the fingertip is placed over the sensor assembly, as shown below. The IR LED transmits an infrared light into the fingertip, a part of which is reflected back from the blood inside […]
Introduction It’s time for 8-pin microcontroller Microchip PIC12C508, the SAVER V3.2, my latest design of a device that turns a night light on and off everyday. The circuit uses only a PIC12C508 8-pin CMOS micontroller and a small triac, MAC97A6. The Saver V3.2 also demonstrates the use PCW PIC C Compiler. Circuit Description The schematic […]
Introduction The PIC Mesh is a distributed programmable network capable of building motion sensitive alarm systems, automatic lighting, door alarms and various other home automation systems in a matter of minutes. In this project, we built a mesh network of PIC32 devices using low-cost, low-power nordic radios. We modified an existing nrf24 library to support targeted and […]
You might have come across several applications where we need to control a specific device based on analog parameter. This Embedded system works in a similar concept where we are about to control the speed of a DC motor using based on the external temperature. The rise in temperature will result in increase in speed […]
I was contacted by somebody who suggested I should enter our senior design project here. Seeing as how we found and used the AX-12s from Trossen Robotics, I figured this would be a great place to post. This project was our senior design, a semester long course that requires a team of electrical and computer […]
So you want to become a HAM, or you’ve got one of those no-code licences, but like me feel somewhat lacking,… not having obtaining that age old badge of proficiency that differientiated the HAM from other radio operators. However, like thousands and thousands of others, you have trouble learning the code. The problem for most […]
The 3rd harmonic distortion meter has been designed for measuring the quality of AC supply. The meter is built with a PIC18F2550 project board and the full wave rectifier front-end circuit. The AC power line, 220VAC is measured through the step down isolation transformer. The input signal to the 10-bit ADC is full wave rectified. […]
Introduction Have you ever gone to the beach on a hot summer day with your family only to complain that your phone is so low on battery that you can’t even take a selfie? Have you ever been concerned that you’re not putting on enough sunscreen, or sunscreen that isn’t strong enough? Have you always […]
