For the local GPIO pin's at the RPI board it is possible to get a notification using the IOctrl I can see in the WiringPI project. So it is really a shame you have not from the beginning designed the inputs to be able to give an interrupt signal. I can see the MAX31913 you use in the DI module does ...

Hi all I am looking for an actuator controller which is able to run (PWM controlled) with a DC brush-less motor 24V/10A, with a feedback analog 0-24vdc or a tachometer (a/b encoder) I can't see Kunbus has such controllers - anyone knowing a controller I can use (or actually I need to use up to 16 co...

Hi All
As I understand the DI/DO modules is using the RS485 bus to communicate the RPi board.
How fast reaction time can I expect from an input is changed to the software is notified.
I have plans to write the program in C++, and how do I subscribe to the DI changes so I don't have to poll?