Nano Page

Introduction

This page is to provide information on the Nano v3.0. This is a different device to the model Nano Every as it uses the ATMega328 chip

Getting the ATMega328PB to work

When you buy a Nano v3.0 off some stores you actually get a device which has a ATMega328pb chip. You can tell this because the chip has it written on it.

I could not use this with Arduino IDE 2.1.1 on ubuntu 23.04 as it failed with the dreaded

avrdude: stk500_getsync(): not in sync: resp=0x00

Looking on YouTube I found this to be an error to be you need to use minicore and use their ATMega328pb. You I went to Arduino and added

https://mcudude.github.io/MiniCore/package_MCUdude_MiniCore_index.json

As shown here.

But this still failed but is required. This fails because we need to replace the bootloader. To do this you need another device. In my case I used a Arduino Nano Every. You need to build the ArduinoISP on the working device and wire the two devices together as follows.

Arduino without   |  Arduino as ISP
   bootloader     |   programmer
__________________|________________
ICSP pin#1 (MISO) |      D12
ICSP pin#2 (+5V)  |      5V
ICSP pin#3 (SCK)  |      D13
ICSP pin#4 (MOSI) |      D11
ICSP pin#5 (RST)  |      D10
ICSP pin#6 (GND)  |      GND
__________________|________________

You then need the following settings

For me I had seen an example where the UART was UART1 (ATMega328PB Only) but this is referring to the host not the target. I did use the wrong value and it did look like it worked (Two red lights, one blinking) but it hadn't. And finally a picture of success.

When we go into vs code the minicore settings are available.