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Replying to @gojimmypi

There’s a good TI document about picking I²C pull-ups, but the gist is that my instinct is to stick to 10k or stronger, and 40k might be too weak to pull the line high after being driven low. Probably not a problem with these short traces, but better safe. https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/6/I2C-Bus-Pullup-Resistor-Calculation.pdf

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