Circuit Lake

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The purpose of mains monitor project is to record mains fluctuations with an autonomous device and upload measurement to a PC for analysis. The monitor plugs into an ordinary mains outlet and records (time stamps) the voltage amplitude and the frequency at defined time interval. It transmits data through an USB interface. It can [...]

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If you’re looking random number generator project check out this Arduino Based USB Hourglass. The project combines a sand timer with a rotating mechanism and an optical beam through the center of the timer to observe the falling sand. The amount of light reaching a detector is digitized at frequent intervals and processed by [...]

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This is simple but very powerful USB charger project for your gadget like mp3 player, camera, cell phone, and any other gadget you can plug into a USB port to charge. Main component of the project is LT1302, Micropower High Output Current Step-Up Adjustable and Fixed 5V DC/DC Converters from Linear.

This project purpose is locking Caps USB HID keyboard. After it plugged to USB port it will waits between 30 seconds and 8 minutes before start to toggle the Caps Lock status on or off. The Caps Locker was built on an Atmel AVR ATTiny45 based on the Easy Logger application from ObDevIt with little [...]

This USB interface board project is used to connect 8 (parallel) data lines to the USB. Main component of this project is FT245BM. With a small internal FIFO (384 byte Tx, 128 bytes Rx) and 4 handshake lines which make it suitable for interfacing microcontroller designs to the USB. Wolfgang says that you can also [...]