Just wiped my SD card, reformatted and installed a fresh image.
I then installed Apache and related files, PHP5, and MySQL.
I then setup the wifi and installed the changes to make the Pi a wifi access point.
After all this I installed Cayenne.
I then added the ADS1115.
The volts are wrong and fluctuates to a small degree. In short, nothing has changed.
I have a solar detector fixture composed of four small solar cells as input to the ADS1115.
I have not installed the Adafruit software.
In “ADS1115-reporting-0-17-volts”, or similar, a clean wipe solved the problem.
I can suppose, if the hardware is good, that one of the actions preceding the installation of Cayenne, is incompatible.
Any ideas? The obvious is to install Cayenne before anything, except the wifi since I’m running ‘headless’.
I’m fairly sure the Adafruit software will run correctly if I install, but may complicate things further.
If no one has any ideas in the next few days, I’m going to do another installation and make wifi setup the only modification to the pi before installing Cayenne.
Since posting this, I’ve installed Weaved and run the installer. Same readings as Cayenne. No change in Cayenne’s output.