I need to load the Atmega328p 8kHz board definition using the board manager and can not find a way. Any help will be appreciated.

  • 8Khz or 8Mhz? AFAIK there is no 8Khz built-in crystal/osscilator. – Paul Apr 7 '16 at 8:25
  • Your question doesent make much sense, Are you using a 8MHz crystal or do you want to use the internal 8MHz rc oscillator? – Hans Neve Apr 7 '16 at 9:11
  • And.. do you already have the board definition or not? – frarugi87 Apr 7 '16 at 10:14

Assuming that you have a 3.3V Atmega328P and are using an external 8MHz occilator:

In the Arduino IDE click on Tools.
Scroll down until you see an option starting with the word Board:
Select the option called Arduino Pro or Pro Mini

Click the Tools menu once again.
This time select the option starting with Processor:
Select the Atmega328P (3.3V, 8MHz)

Alternatively you can edit the boards.txt file located somewhere similar to C:\Program Files (x86)\Arduino\hardware\arduino\avr
Fuse bits can be calculated using one of these online tools:

  • Assuming that you have a 3.3V Atmega328P and are using an external 8MHz occilator: If this is not the case then please amend your question with the specifics and I will edit my answer to suit. – sa_leinad Apr 7 '16 at 11:59
  • The 3.3V part shouldn't matter. – Gerben Apr 7 '16 at 18:44
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