Circuit Lake

If you want to build an ultrasonic range finders project but you don't want spend much money to buy commercial sensors like Parallax’s PING sensor then Kerry D. Wong's project may help you to build sensitive ultrasonic range sensor using inexpensive ultrasonic transducer. It takes cost less than 5 dollars (excluding the MCU).The project uses cheap 24 kHz transducers. These sensors can easily achieve a range of more than 20 feet with properly designed circuits. The ultrasonic transmitter is powered from ATmega328's counter 1 PWM output (chip pin 16 and ...

This PIC18F252-based project allows you to measure the torque in an automobile drive shaft. Output data from the device can be sent to PC or vehicle data recording system through RS-232 interface. To calculate horsepower, output data need to be combined with RPM measurements from the data recording system. The project consists of two main parts, sensor unit, which attaches to the driveshaft, and the receiver unit, which provides the serial output signal. The sensor unit is battery powered and communicates with the receiver via a 433 MHz RF data ...

Xarias is embedded car computer system, based on ATMega32 MCU and programmed using C language and compiled with gcc compiler. The project is designed to obtain different car information and display it in human-readable form. It can calculate momentary and average speed, calculate momentary and average fuel consumption, show engine RPM, calculate journey time and distance, calculate total fuel consumed and its cost, show temperatures (inside/outside) and air conditioner automatic control and programming.This automotive project is not utilizing OBD-II interface. All data is read directly from the sensors (speed, rpm, ...

OpenPICUS, a PIC 24F series based open source platform made for wireless smart sensors and actuators, reaches the biggest milestone today. The open source platform is mature and offers to the developers:The new IDE, easy to use and Free to download Software Framework: your Apps can control the functions of the Protocol and of hardware, but you don't need to be an expert of both. Apps Source Code (such as wireless Webserver) Video guide for the IDE and a Manual for the Framework“We are really excited. We worked hard for ...