Circuit Lake

The AeroQuad project is an open-source hardware and software project to build a quadcopters or quadrocopters, remote controlled four-rotor helicopters. The hardware consists of an Arduino microcontroller (Mega-2560 or Uno) as the flight controller board and an AeroQuad shield with various sensors like accelerometer and gyroscope.The project software is written in C and uploaded to the microcontroller via the Arduino IDE. At this time, it supports Rate (Acrobatic) Mode that uses only the gyroscope for flight assistance, and Attitude (Stable) Mode that use both the gyroscope and accelerometer for auto-leveled ...

The infinity bug is connected across the phone-line of a distant phone in parallel mode. It uses surface-mount resistors, capacitors, transistors and diodes. It gets operating current from the phone line (leech device), no external power supply is required.To use the Bug, the distant phone is rung. After having a conversation with the person at the other end, they will replace the receiver. At this point you whistle into the receiver and the Infinity Bug will pick up the line. The high-gain amplifier in the Infinity Bug will pick up ...

This project allows you to connect an external infrared keyboard to your iPhone without jailbreaking. It uses Cypress PSoC microcontroller to emulate a simple modem, and then expanded it to detect an infrared signal or read from a USB host controller, which converts this signal to FSK for transmission to an iPhone.To display the appropriate characters on-screen, an iPhone application has been created to decode the FSK signals to interpret the keyboard data. This interfacing project is designed by Zack Gainsforth and George Dean and need cost less than $20. | ...

This project shows you how to build a balance robot based on Arduino named as ArduRoller. It has nice chassis design and balances quite well on the spot. The robot also responds to knocks pretty quickly but sometimes giving it a more gentle push sends it gliding across the room at a constant speed. Shaun Crampton, the project designer, builds the bot based on Arduino Uno and using 150 degree/s gyro (sensor for the angle rate) and 1.7g Accelerometer sensor.The project also features Bluetooth modem for telemetry and planned to ...