Barebones AVR dev. board - jumper wires

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dsetin19
 
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Barebones AVR dev. board - jumper wires

Post by dsetin19 »

I have purchased the Barebones AVR development board.

On the product page there is a paragraph that contains the following:
To get you started, here is a 'hello world' zip file.
It contains a C program, compiled .hex file and Makefile for a blinking LED connected to pin PB5.
Wire up the board as shown here (don't forget the 3 jumper wires up top, they are essential!)

These jumper wires are on pins 22(GND), 21(AREF), AND 20(AVCC)

Question: What is the purpose of the 3 jumper wires?

Thanks.

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adafruit_support_mike
 
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Re: Barebones AVR dev. board - jumper wires

Post by adafruit_support_mike »

Those provide VCC and GND to the chip.

The one in the middle provides the analog reference voltage. That one isn't strictly necessary, but it's generally better to connect it than to leave it floating.

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