I'm seeing very regular interrupt calls on GPIO0 as displayed on this picture. (application is a hall IC switch to detect rotations of ma analog gas meter. the IC is connected to GPIO0 of a Wemos D1 mini.)
The ISR only sets a flag which is handled and cleared in the main loop. Should I suspect hardware or software issues?
the board is standalone, not connected to a computer. I'll try to export the timestamps out of the InfluxDB to get the precise interval.
But I suddenly remember that the water company installed a "smart meter" that is sending data wirelessly. Maybe this could interfere with my hall IC that reads the gas meter. Could be a hardware issue!