Project Summary This is a mobile phone sniffer circuit that can detect the signals being used in the GSM (Global System for Mobile Communication) band at about 900 MHz. Since the signals are digitally encoded, it can detect only the signal activity, not the speech or the message contents. A headphone is used to hear […]
Cell Phone Detector Read More »
Introduction Many embedded systems leverage a hierarchical structure in their product architecture for a more robust and efficient product. The more complex the product becomes, it is more preferable to segment tasks according to the processing unit’s role to observe optimal tradeoffs in the system. For instance, it would be impractical for a single processing
Robotic Candy Sorter Read More »
Summary: The speed of the motor is measured in Rotations per Minutes,RPM.The RPM Meter is to read the running speed of Motor like DC MOTOR. Here the speed of the DC Motor is sensed with the help of a speed sensor and it is signal conditioned to have pulses which given as Timer1 clock input
PIC 16f877 microcontroller based RPM Meter Read More »
This is a simple voltmeter which measures 0-5V at a precision of 4.8 mV. This is a simple design using inbuilt ADC of PIC 16F877A. PIC 16F877A have 8 channel 10bit ADC. This is a computer interfaced project. Measured voltage is output in serial interface software in computer. There is a serial interface circuit (MAX232)
PC Based Digital Voltmeter Using PIC 16F877A Read More »
Figure 1: Controlling and Monitoring devices with a Cellphone A GSM modem is a wireless modem that works with a GSM wireless network. GSM stands for Global System for Mobile communications, this architecture is used for mobile communication in most of the countries in the world. A wireless modem acts basically like the traditional dial-up
Sending SMS Text Message using PIC Microcontroller – Flowcode Read More »
Project Summary This circuit is a relay driver that is based on a PIC16F84A microcontroller. The board includes four relays so this lets us to control four distinct electrical devices. The controlled device may be a heater, a lamp, a computer or a motor. To use this board in the industrial area, the supply part
PIC Controlled Relay Driver using PIC16F84A Read More »
Abstract Parallel parking is often the most difficult part of ordinary drivers, and one of the most feared tasks for some. Big cities specifically require great amount of parking skills as parking spaces are often limited. Removing the difficulty, stress and uncertainty of this task is very appealing. That is why renowned automobile companies like
ParkBot: The Autonomous Parallel Parking Car Read More »
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
Design and Development of an Automated Home Control System Using Mobile Phone Read More »
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
Single Pic Micro single shot bi stable Relay Read More »
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
Microcontroller measures heart rate through fingertip Read More »
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