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Connecting Nokia 3310 LCD to USB using AVR

What do you do with an old phone, a microcontroller and lots of time? You hook the old phone's LCD screen to the computer USB of course! In this project we're going to communicate with a Nokia 3310 LCD display over USB! How are we going to do that? We're going to connect the LCD display to an Atmel ATmega8 micocontroller and talk to it using the SPI, then connect the ATmega to a PC using V-USB. The Nokia 33 ...

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Cellphone Operated Robot Using Microcontrollers

Component Required: IC1 - MT8870 DTMF decoder IC2 - ATmega16 AVR microcontroller IC3 - L293D motor driver IC4 - 74LS04 NOT gate D1 - 1N4007 rectifier diode R1, R2 - 100-kilo-ohm R3 - 330-kilo-ohm R4-R8 - 10-kilo-ohm C1 - 0.47μF ceramic disk C2, C3, C5, C6 - 22pF ceramic disk C4 - 0.1μF ceramic disk XTAL1 - 3.57MHz crystal XTAL2 - 12MHz crystal S1 - Push-to-on switch M1, M2 - 6V, 50-rpm geared DC motor Batt. ...

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