I purchased a MOD-1016 AS3935 based lightning detector,
http://www.embeddedadventures.com/datas ... doc_v2.pdf
and while I wait for it to arrive I'm doing some homework.
Looking at the schematic there are 2x 10K pullup resistors on the break out kit R1 & R2
and in the documentation it states that if the micro controller or I2c bus has already pullup resistors then R1 & R2 should be removed.
My question is simple does the Pi have built in Pullup resistors on the I2C bus?
and if it does should remove these two resistors on the breakout kit?