Circuit Lake

Electronic Project and Circuit Collection


Easy Voice Commander

February 05, 2012 By: admin Category: Audio, Control, Digital, Interfacing, Microcontroller, Miscellaneous, Renesas No Comments →

The purpose of the project is to build uncomplicated voice recognition system based on M32C/84 microcontroller. The main part consists of telephone, some amplifiers, and development board. The project used to operational amplifiers in the analog part, the first one, provide amplification to the signal of 220mV p-p generated by signal transducer (a microphone electret) […]

Eight-Channel RF Remote Controller

January 24, 2012 By: admin Category: Control, Digital, Microcontroller, Project, Remote, Renesas No Comments →

This controller was developed using Renesas SKP16C62P Starter Kit Plus. Each remote controller is controlled via RF. There are four types of generic control: general purpose timer, sprinkler timer, cooler, and heater. Each Controller may have up to 4 stations, (the Sprinkler Timer may have 8 outputs by multiplexing the outputs). Each controller’s program is […]

Connect External Keyboard to iPhone

December 01, 2011 By: admin Category: Digital, Interfacing, Microcontroller, Project No Comments →

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.

Rechargeable Battery Capacity Tester

October 24, 2011 By: admin Category: AVR, Digital, Measurement, Microcontroller, Project No Comments →

This ATMega168-based battery tester allows you to find out the overall capacity of the rechargeable battery. It can shows how long will a battery last from the time it’s fully charged to the time that the “low battery” indicator comes on your device. It can be used to test multiple cells individually, and display the […]