curl -X POST -d @calibration.json -b cookie.txt http://10.0.0.132:56789/api/phprobes/1/calibrate
{"error":"invalid character '/' looking for beginning of value"}[/LIST]
[
{"expected":7.0, "observed": -310},
{"expected":10.0, "observed": -21685},
reef-pi 3 will support 2 point calibration. For marine aquariums, I'd recommend using pH 7 an 10. Fresh water should probably use 7 and 4.
I don't think you should need the [/LIST]. The following should be sufficient. (Your snippet was also missing the closing square brace.)
[
{"expected":7.0, "observed": -310},
{"expected":10.0, "observed": -21685}
]You know I noticed it was missing the closing brace. So i redid it and made sure it was there but when i ctrl-c and then went to look at it again it was gone. Not sure why that is doing that let me try eliminating the list line.
For ph meters that may be measuring the whole range from 0 to 14, and have temperature compensation, ph meters usually use a 3 point calibration. The cal at 7 and 10 gives the alkaline slope, the 4 and 7 gives the acidic range slope. The calibration at 7 also gives the offset from 0, which is used to offset the whole range and figured in when compensating for temperature.
I had a coldwater minnow/brook trout tank 15 years ago...back then they didnt have the chillers and powerheads they do now...it did well all winter in the basement, until summer hit...trout need cold water and lots of oxygen, and pristine water.
Keep us posted.
Im sorry I lost track of what you were upto
. do you have thread or can you remind me what us the target light /setup etc?
you can always reset reef-pi by deleting the database and restarting it. checkout the troubleshooting guide for details
This is another UI/UX thing that we have to improve. I'll note it down
This is not supported yet in reef-pi. you can say things like 3rd day of the month (3) or every 7 th day (*/7) etc. I am planning to change the timer API/UI to accommodate things like this.
reef-pi , the software itself is not aware of specific GPIO pin that is used for one wire communication (temperature sensor), this is configured at linux/kernel level (/boot/config.txt). you can update that file to use any other pin. By default its 4, and I tend to stick with that. Check out this page: https://reef-pi.github.io/guides/electronics/ , at the end of this i have shared a recommended pin layout. You dont have to stick to it, this is just what I use and it calls out other known use casesWhen enable pca9685 and a physically connected pca9685 it works great!
I found that you can connect multiple temp sensors to only one gpio04 pin. Before, I had a relayboard connected to gpio04 and it did not work, i thought the gpiopin was dead, probably I had temp selected in settings,.
Is only gpio04 for temp sensors? Or can i use other pins to? I tried gpio17 but no temp sensors showed up.
https://pinout.xyz/pinout/1_wire this page details how to use other than GPIO 4 for one wire. Note, in any case you need only one gpio pinWhen enable pca9685 and a physically connected pca9685 it works great!
I found that you can connect multiple temp sensors to only one gpio04 pin. Before, I had a relayboard connected to gpio04 and it did not work, i thought the gpiopin was dead, probably I had temp selected in settings,.
Is only gpio04 for temp sensors? Or can i use other pins to? I tried gpio17 but no temp sensors showed up.
Nothing. reef-pi should work fine as long as the right settings are there and the sensors are detected
Nope. As of now we only support two point calibration. I am looking for references on three point calibration algorithms. I am not sure though its very useful (compared to the algorithmic complexity involved) for our cases. From my primitive understanding most freshwater or saltwater aquarium use case should be fine at two point calibrated readings,.
