Thank you for taking the time to explore the avrprojects website. Here you can find projects about AVR 8-bit microcontrollers. We hope you`ll find these pages both educational as inspiring.

This weather station displays temperature, humidity and pressure, it also displays the time and date. It uses the Arduino Metro mini. The Bosch BME280 sensor is used to read the data from, also a real time clock chip is used to read the time. All the data is displayed on a 2.8* TFT color screen.

The MAX7219 is a IC that can drive 64 LED's, while you only need 4 wires to interface it to a microcontroller. So you can easily hook it to a 8x8 LED matrix module or an 7 segment display. In addition you can daisy chain multiple 7219 chips for more LED displays. The MAX7219 has a 4 wire SPI interface making it very easy to connect it to a microcontroller or a arduino.

The MAX7219 is a Integrated Circuit that can drive 64 individual LED's or up to 8 digits of 7-segment display's or a LED matrix of 8x8. The driver implements a SPI interface that can be controlled from a microcontroller using only three I/O pins.

 photocell or photo resistor is a Light Dependent Resistors (LDR). LDR's are sensors that detect light. They are small, inexpensive, low-power, easy to use and don't wear out.

The ATMega644 board is a microcontroller board based on the ATmega644, The board contains everything needed to support the microcontroller. The board needs 5VDC to power it. Simply connect the power connector to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. You can program it with the ICSP connection.

How to control a stepper motor

stepper motor controller

In this project you will learn how to control a stepper motor using the ATMEL328 board and the L293D motor control chip. The stepper motor can be turned left or right with a slide switche .