STM32F030 custom board

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ddrown
Posts: 118
Joined: Sat Jan 09, 2016 4:49 am

Re: STM32F030 custom board

Postby ddrown » Fri Feb 24, 2017 3:10 am

Update! I wrote two long things on my blog: https://blog.dan.drown.org/frequency-sy ... se-in-ntp/ + https://blog.dan.drown.org/temperature-compensation/

But some highlights:

Test system:

Image

Frequency vs temperature:

Image

Remaining error after removing the fit line from the previous graph:

Image

When the temperature goes down:

Image

My supply voltage goes up by 4mV:

Image


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