Microcontroller

Cellphone Operated Robot Using Microcontrollers

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

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Relais Board Using AT2313

Description This is a peripheral board with 4 relais, rated at 5A/250V each. The board has a ML10 output connector for connection with the AT2313 Project board. It has also 4 LED’s for indication which relais is switched on. Hardware The circuit is simple, it consists of no more then an ML10 connector, a ULN2803A,

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Real Time Clock PCF8583 Using AVR microcontroller

Real Time Clock PCF8583 Using AVR microcontroller

Description The PCF8583 is a clock/calendar circuit based on a 2048-bit static CMOS RAM organized as 256 words by 8 bits. Addresses and data are transferred serially via the two-line bidirectional I2C-bus. The built-in word address register is incremented automatically after each written or read data byte. Address pin A0 is used for programming the

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PC Thermometer Using ATTiny2313

Description With this project you can show the temperature on you PC. This thermometer plugs in on any free serial port. It gives temperature readings accurate to 0.5°C with no calibration.The project consists of the ATTiny2313 RS232 Project board and the DS1621 Thermometer board and software for the PC. It can display both indoor and

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LCD Thermometer TCN75 Using ATTiny2313

Description This small thermometer board uses the Microchip TCN75 device. It is a cheaper clone of the LM75, it costs about 2,50 Euro. The TCN75 comes in a SO8 packaging. The TCN75 is a serially programmable temperature sensor. It has an output that is programmable as either a simple comparator for thermostat operation or as

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