Featured Member Projects
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Line Following Robot
Posted May 21, 2012 By Rinkesh KurkureHow to Mod the Servomotors (look at the pictures) Remove the four screws from the servo and take it all apart. Remove the electronics keeping only the wires from the motor (I kept the other 3 wires from the potentiometer but you don’t have to). Try to fit the gears except for one. I glued the big gear to the one beneath it so to be high enough to “get out” of the case. It isn’t… -
Independent Design Houses in China
Posted May 05, 2012 By Embedded DeveloperA series of two-dozen interviews with industry executives complemented the survey results to provide a fuller picture of this dynamic service sector that has become a vital part of today’s product design and development process in China’s electronics industry. China’s IDHs have relationships with all parts of the electronics value chain. They play a key role in supporting the… -
Car Alarm System
Posted May 04, 2012 By Abba BaThis project is practical, and the hex file, it can get. Button switch to disable the system. Button to open the door for when the driver enters the cars, and system deactivates the trigger button, if starter switch is closed, the device is completely passive. In this mode, only open or close doors button can be used. “proteus 7.8 or 7.9 (car alarm system… -
Digital Clock using AT89C4051
Posted May 04, 2012 By Nikhil DhandareHere is an image of the circuit board. Here is an image of the circuit. The symatic of project on proteus and code for that provided in rar file. -
Water Alarm Circuit
Posted May 04, 2012 By ER.vindhya vasini Manath MahajanThis circuit gives out an alarm when its sensor is wetted by water. A 555 astable multivibrator is used here which gives a tone of about 1kHz upon detecting water. The sensor when wetted by water completes the circuit and makes the 555 oscillate at about 1kHz. The sensor is also shown in the circuit diagram. It has to placed making an angle of about 30 – 45 degrees to the ground. This… -
Temperature and relative humidity meter using an inexpensive DHT11 sensor
Posted Jan 17, 2012 By RAJENDRA BHATTDHT11 is the most inexpensive sensor currently available in the market that provides calibrated digital outputs for temperature and relative humidity. It is available in a single row 4-pin package and operates from 3.5 to 5.5V power supply. It can measure temperature from 0-50 °C with an accuracy of ±2°C and relative humidity ranging from 20-95% with an accuracy of ±5%, thus making it… -
300 Watt MOSFET Real HI-FI Power Amplifier
Posted Dec 31, 2011 By Circuit ProjectsI am committed to sharing my experience of the RAS 300 with other enthusiasts sharing my passion for perfection.I designed this minimalist amplifier to be durable, simple to operate while offering high fidelity equivalent to the original sound source and would recommend partnering this amplifier only with other products of outstanding quality. When I set out to design this amplifier,… -
PIC Controlled Relay Driver
Posted Dec 31, 2011 By Circuit ProjectsThe components are listed below. 1 x PIC16F84A Microcontroller 1 × 220V/12V 3.6VA (or 3.2VA) PCB Type Transformer (EI 38/13.6) 1 x Line Filter (2×10mH 1:1 Transformer) 4 × 12V Relay (SPDT Type) 4 x BC141 NPN Transistor 5 × 2 Terminal PCB Terminal Block 4 × 1N4007 Diode 1 × 250V Varistor (20mm Diameter) 1 x PCB Fuse Holder 1 × 400mA Fuse 2 × 100nF/630V Unpolarized Capacitor 1 × 220uF/25V… -
10 LED VU Meter Project by LM3915 and LM324
Posted Dec 31, 2011 By Circuit ProjectsInput sensitivity is about 1 Volt rms, up to +6dB. You can adjust the input amplitude by using the multiturn 50k linear potentiometer (POT1). Circuit needs symmetric ±12V power supply because of the LM324 opamp. We used metal film resistors (1% tolerance) so accuracy is sufficiently high. Visual duration can be adjusted by using linear 10k potentiometer (POT2). LEDs should be 5mm x… -
Diffusion limited aggregation
Posted Dec 21, 2011 By Bruce LandFull description at http://people.ece.cornell.edu/land/courses/ece5760/DE2/Stack_cpu.html
