![]() ![]() But as you can see, the LED is not lit up. Then you can see that I've connected the anode (positive) pin of the LED to PD5 of the ATmega328 because that is the same pin as digital pin 5 on the Arduino Uno. It's one 5V wire (coming off bread board rail) to pin 7 of the ATmega328p. It's one GND (ground) wire connected to pin 8 of the ATmega328p. Here's a quick snapshot of the initial circuit we are going to build. That means your final product can be much smaller.īut, how do we get the chip to run our program? Build the Circuit to Power the ATmega328p You can see the socket that I removed the chip from and you can see that the chip itself is far smaller than the board. Here's what it looks like when you remove the chip from the Uno. The board takes up a lot of space and is really used to provide you with an easy way to program the chip. Once You're Done Programming the Chipīut, after you're done programming the chip, it doesn't make sense that you keep it attached to the Arduino Uno board. We use the Arduino Uno to program the ATmega328p chip that is connected to the board on the IC (integrated circuit) socket. ![]()
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