I've got an ORP Probe connected to an ADP1000 and VINT Hub on a Raspberry Pi running Jessie. I query the probe using the Python Voltage input example.
I have added "attached.setVoltageRange(7)" as the second item in the "attached" section of the example voltage input script to change the ADP1000 into ORP mode, but "Saturation Error" usually appears once before valid readings appear in the console screen. This happens every time the script is ran, so the device must reset to PH Mode once the script is closed.
Is there a way of fixing this or is it a bug? I can work around it by commenting out the error report console statement but it doesn't seem like an ideal thing to do
If you set the voltage range right after ch.openWaitForAttachment(5000) using ch.setVoltageRange(7), the range should change before the first sample arrives. By the time the attach handler fires, the first data point has already been recorded.
Ah, my mistake, I missed the error because it was on the line with some other text. If you move ch.setOnErrorHandler(ErrorEvent) after ch.setVoltageRange(7), it should fix the problem.
This is a library bug. You should be able to change the voltage input range in the attach event, without having to worry about any spurious error/data events. This will be fixed in the next library release.
Thanks for the replies. I'll leave it with the error print statement commented out until the next release.
Having used a PH and ORP probe for a few days now can I suggest making a few of the settings stick between sessions, and also maybe adding basic average readings to the sample code to try and combat electrical noise.
I use a 10 point average for my ORP Probe and a 4 point average for my PH Probe, I then further limit the rate of change in OpenHAB when it processes the result of a probe query. This gives me relatively noise free graphs, and a final value that I can use to control my Pool Chlorinator
When you download our drivers, it automatically gives you the newest release. For example, if you download the Windows drivers now, the installer filename is
Phidget22-x64_1.0.0.20171120
22 is the major version, but 1.0.0.20171120 is the release that came out on November 20, 2017.
