06-01-2019, 02:07
(06-01-2019, 00:33)41south Wrote: ... It appears that best practice is to have a set of pull-ups in each section of the bus, therefore reinforcing the need for a second bus extension chip at the sensor end of the extended I2C bus.
That is true. The Extended I2C port on the TX board as designed to be used with the Soil/Leaf interface, which includes the second I2C bus extender chip to complete the circuit. In this case, pull up resistors are present at both sides of the circuit, as it should be.