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FT232 USB Interface Adapter
Posted on Thursday, April 29, 2010   •   Category: USB Interface Adapters


Control up to three devices from a PC with FT232 IC (USB to Serial UART) from Future Technology Devices International FTDI. Circuit is simple and does not require external microcontroller or any type of firmware programming. PC control software written in VB6 is included.


USB DS1820 PC Thermometer
Posted on Thursday, April 29, 2010   •   Category: PIC


This is a digital thermometer based on USB PIC16C745 microcontroller from Microchip and DS1820 sensor from Dallas Semiconductor. Temperature readings are sent over USB port in HIDCOMM USB mode to VB6 program on a PC. Hex program and sample Visual Basic 6 application is included.


MC145170 PLL FM Transmitter
Posted on Thursday, April 29, 2010   •   Category: FM Transmitters


In order to simplify the transmitter design, we've used the new pll circuit from Motorola :the MC145170. This PLL includes the prescaler and a serial standard bus called SPI.


Temperature / Light Brightness Meter with LCD
Posted on Thursday, April 29, 2010   •   Category: PIC


Circuit measures the temperature and ambient brightness of the surrounding environment at the location it is placed. The data from the ADC is the calculated and displayed on the LCD. The main CPU unit on board the device is the PIC16F873.


Infrared Remote Volume Control
Posted on Thursday, April 29, 2010   •   Category: Remote Control


This is a true 'minimalist' remote, having but three functions: Volume Up, Volume Down and Mute Volume is controlled by a motorized (motorized for US readers) pot rather than any of the 'digital' pots that now abound, and this was done for a number of very good reasons.


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