Circuit Lake » Interfacing

Generic Finite State Machine Interpreter

admin — Tue, 07 Feb 2012 23:12:34 +0000

A Finite State Machine (FSM) is a versatile mechanism to implement sequential digital circuits. This project implements any desired FSM using the Renesas microcontroller instead of flip-flops and logic gates. The system has a PC based GUI interface where the user can represent the required FSM using a simple State Transition table or a State [...]

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Easy Voice Commander

admin — Sat, 04 Feb 2012 23:46:02 +0000

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) and [...]

Stair Stepper Control Adapter

admin — Mon, 30 Jan 2012 00:39:43 +0000

The aim of the project is to build an interface between the user interface controller and resistance mechanism on a stair-step exercise machine. This M16C/62P microcontroller-based system gives you control over the resistance level instead of having to use one of the machine’s preset resistance levels.The project will determine what the original system was [...]

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Mini Point-of-Sale Terminal

admin — Mon, 09 Jan 2012 02:04:13 +0000

This project is a portable Point of Sale terminal designed specifically to handle lab manual and class supply sales in a university environment. This involves three short but very busy sales periods per year ( less than 1 week each), using staff with no training on a cash register per-se. Commercial POS terminals were thought [...]

Standalone Mobile Phone Book Backup

admin — Wed, 28 Dec 2011 01:25:23 +0000

Mobile phones have become an ubiquitous gadget used worldwide. Despite this, there are a number of different communication technologies and the GSM (Global System for Mobile Communications) standard has emerged as a rising star. Used mainly in Europe, it is also gaining ground in different Asian and American countries. A differentiation feature of the GSM phones [...]

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Connect External Keyboard to iPhone

admin — Thu, 01 Dec 2011 01:32:31 +0000

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 [...]

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Android Breathalyzer

admin — Sat, 19 Nov 2011 02:52:43 +0000

Breathalyzer is a device for estimating blood alcohol content (BAC) from a breath sample. Based on this information, you may drive or not. Alinke has made simple Breathalyzer that can communicate with Android Phone.The main component of this project is the IOIO board which enables an Android phone to receive data from Seeed Grove alcohol [...]