Introduction EVBavr04

EVBavr04 is a development board designer for the hobbyist and engineers who want to quickly prototype their system based on AVR microcontrollers from Atmel. Developer has access to all pins of the micro, which are brought to the header (pin connectors) and labeled accordingly. Depending upon the board`s configuration (listed versions) some or all of the following components are found on the board: thermometer DS1820, potentiometer, relay, buzzer, RTC (real time clock), 1-wire connector, I2C connector, 7-segment LEDs and LCD display (2x16). The pin headers provided allow easy access to all these components. In addition, there are eight micro-switches and eight diodes which could be connected to any of the pin connectors or additional components, which may be placed on the large, adjacent prototype area. The power circuitry on board (bridge, voltage regulator) eliminates the need for an external regulated power supply.
This board comes with the several examples of the C code routines (source from), to facilitate testing and quick development in using the board`s resources. 
 

 We wish you lots of success and full satisfaction while designing and constructing appliances based on EVBavr04.  

 Supported microcontrollers

Available version

The set EVBavr04 is sold in the following version: 

• procesor ATmega8 (can be exchanged)
• all connectors
• four 7-segment LEDs,
• diodes and switches
• relay
• buzzer
• two potentiometers
• DS1820 thermometer
• DS1307 Real Time Clock ant 3.6V accumulator

You can also buy the following accesories:

• LCD (blue, green with lighting or not)
• 10 cables (for connect the pins) 
• external clock (8MHz)
• ISPcable II or ISPcable III programmer
• JTAGcable II or JTAGcable III programmer/debugger

Power supply for the board

• The board shoul be supplied from external supply with voltage 7..12V AC, or 9..15V DC, using a standard plug with bolt diameter 2.1mm placed in the supply socket.
• Stabilized voltage Vdd is accessible on the connectors of the board extentions.
• There are two jumpers placed on the board: SUPPLY and 3V3. The closure of the 3V3 jumper results in all the circuits being supplied with 3.3V voltage (it can be regulated by 3V3 potentiometer from 1.8V to 3.3V), by the open jumper the voltage will be 5V.
• SUPPLY jumper gives the opportunity of connecting voltage omiting the circuits of the bridge and the regulator.

Demo programs

• LEDs - LEDs and Switches testing.
• 7_seg - clock application with time setting on 7-seg displays.
• LCD - LCD display testing with function library.
• RTC - RTC clock with functions library.
• ADC - analog to digital converter.
• Therm - LM35 application.
• UART - RS232 test with functions library.
• 1Wire - DS1820 Digital Thermometer with 1-Wire library.
• PWM - 2-chanel PWM with Fill Factor setting.

 Software for ATmega8/48/88/168  v2.5     

Buy EVBavr04