reef-pi :: An opensource reef tank controller based on Raspberry Pi.

[Ranjib]

Hi to all,why do i got unauthorized when i try to calibrate with curl? Thank you and this is the log:

03/08/2019, 18:48:40

UI

ERROR

{"error":"json: cannot unmarshal object into Go value of type []hal.Measurement"} | HTTP 400

The error is confusing. You are not unauthorized, your request is failing because the api is wrong, theres no /api/calibrate , i think its /api/phprobes/{id}/calibrate (replace id with your phprobe id)

 

[Ranjib]

The error is confusing. You are not unauthorized, your request is failing because the api is wrong, theres no /api/calibrate , i think its /api/phprobes/{id}/calibrate (replace id with your phprobe id)

For the non-existent /api/calibrate behavior, I just cross checked, with 2.4 I am not getting unuathorized error, I'm seeing 404 resource not found error, as expected

 

[janos]

Thank you Ranjib i try to copy paste everything from your earlier post and could not calibrate all day long.Deleted everything reinstalled and still not working. Followed your post and could not do.Could you redirect me to read something how to create that calibrate.json file? Why my try is always unauthorized ?

 

[janos]

This is what i try all day long.
Code:
[/LIST]
[
{"expected":8.21, "observed": -8768},
{"expected":8.12, "observed": -8189}
]
reef-pi requires authentication for api, we'll use one curl command to get the authentication token, and another to use the token to apply our calibration data. Remember to disable the ph monitor before applying calibration.
Code:
curl -d @creds.json -X POST http://<IP>/auth/signin -c cookie.txt
curl -X POST -d @calibration.json -b cookie.txt http://<IP>/api/phprobes/1/calibrate

Note, the last command assumes the ph monitor id is 1, which will be the case if you create a ph monitor first. If you delete and create another one it will be 2 and so on.. so if you are making a re-attempt then update the command accrodingly. Calibration details are specific to individual probes/ph monitors. You can always checkout your existing ph probes and their ids using this command

Code:
curl -b cookie.txt http://<IP>/api/phprobes/

 

[janos]

Try to log in with Putty no problem,try to see my PH probes unauthorized.

 

[janos]

Why is the sign in is null,and the equipment []

 

[Ranjib]

Why is the sign in is null,and the equipment []

"null" is ok. It does not mean anything is wrong, it means signin was successfull. [] stands for empty list in equipment, i.e. there is no equipment present yet

 

[janos]

Thank you Ranjib,so what is that mean?do i have the right setup for calibration?Where to save the calibration.json. Ask because when i try to calibrate i got error msg.:

Time	Emitter	Type	Content
04/08/2019, 06:57:06	UI	ERROR	{"error":"json: cannot unmarshal object into Go value of type []hal.Measurement"} | HTTP 400

 

[Michael Lane]

Thank you Ranjib,so what is that mean?do i have the right setup for calibration?Where to save the calibration.json. Ask because when i try to calibrate i got error msg.:

Time	Emitter	Type	Content
04/08/2019, 06:57:06	UI	ERROR	{"error":"json: cannot unmarshal object into Go value of type []hal.Measurement"} | HTTP 400

I believe the unmarshal error is due to a typo in the original json example. [/LIST] should not be in the json.
Instead of

[/LIST]
[
 {"expected":8.21, "observed": -8768},
 {"expected":8.12, "observed": -8189}
]

Use this as a sample instead

[
 {"expected":8.21, "observed": -8768},
 {"expected":8.12, "observed": -8189}
]

 

[PaulJ2303]

Hello guy's

It's time i started to delve into the arcane world of dosing pumps.
I've seen some good individual 12v peristaltic pumps on ebay that i'd like to use.
does Reef-pi allow for the control of dosing pump's ? and if so is there a build guide anywhere

thanks for any help you guys can be.

 

[janos]

Yes here is the guide:https://learn.adafruit.com/search?q=reef-pi&view=all

 

[PaulJ2303]

thankyou

 

[PaulJ2303]

ok i read the guide for dosing pumps ( https://learn.adafruit.com/search?q=reef-pi&view=all )

is there a way for me to incorporate this onto the main reef-pi build rather than create a new build using the pi zero?

thanks

 

[Michael Lane]

ok i read the guide for dosing pumps ( https://learn.adafruit.com/search?q=reef-pi&view=all )

is there a way for me to incorporate this onto the main reef-pi build rather than create a new build using the pi zero?

thanks

It can definitely be all on the same pi. Just apply the doser steps to the pi that's already set up.

 

[bala murugan 00500]

Finally, i spend some time on the pi pwm frequency issue with 2.4 release. There was a nasty bug that i had overlooked, I feel really sorry about the users as 2.4 is was supposed to fix pwm issues on pi. I'll publish a bug fix 2.5 version as soon as possible. probably tonight

any update on 2.5 version

 

[PaulJ2303]

It can definitely be all on the same pi. Just apply the doser steps to the pi that's already set up.

Thanks Michael, although i'm enjoying this build I'm coming at it from a complete beginner to electronics so please bear with me.
I've only got as far as setting up the temperature sensor on a pi 3b+ using the perma proto hat.
Looking at the fritzing diagrams for the power controller and the dosing pumps side by side there doesn't seems to be enough room to fit both ? or am i looking at it wrong (likely)

apologies for the really newb questions.

also can i use 3 dosing pumps instead of the stated 2?

 

[janos]

Hi PaulJ2303 i just bought one hat from ML and i think that is the best thing you could have.Everything is on one board,you do not need to think how to .

 

[Michael Lane]

Thanks Michael, although i'm enjoying this build I'm coming at it from a complete beginner to electronics so please bear with me.
I've only got as far as setting up the temperature sensor on a pi 3b+ using the perma proto hat.
Looking at the fritzing diagrams for the power controller and the dosing pumps side by side there doesn't seems to be enough room to fit both ? or am i looking at it wrong (likely)

apologies for the really newb questions.

also can i use 3 dosing pumps instead of the stated 2?

reef-pi can definitely handle temperature and 3 dosing pumps. I'm using 3 dosing pumps and 5 channels of LEDs along with temperature, pH, and 16 outlets all on one reef-pi. I'm going to add 4 more dosing pumps soon.

It might help if you start a separate thread for your reef-pi build. That way things won't get lost in the sea of this thread. If you start a thread, feel free to tag me and I can help with specific advice.

 

[PaulJ2303]

It might help if you start a separate thread for your reef-pi build. That way things won't get lost in the sea of this thread. If you start a thread, feel free to tag me and I can help with specific advice.

thanks Michael here is the link: https://www.reef2reef.com/threads/reef-pi-on-a-wish-and-a-prayer.594848/
and anyone else who could help please pile in
cheers.

 

[Mad_Deuce]

Hi all I'm in the plan to build a DC only pico tank pi control. My think will be using the below equipment. The goal is to keep the control board as clean and plug and play as possible. I have selected some parts and need some help to see if it will work?

Tank equipment:

On/off and PWM control equipments
Light: Kessil A80 24v, 16w, 0 - 10v pwm
Return pump: Jabeo DC 650 Nano 24v, 8W, 0-5 PWM (I think) control

On/Off only
Filter pump: Mini DC pump 12v, 6w
Heater: DC Heating pad 24v, 15w
Peltier chiller: 12v, 100w, I have an stand alone tec PID controller.
Peltier Fan 2x: 12v, 0.15w total
Couple of mini Led indicator: 5v to 12v

Sensor:
3x Temperature probe (1 tank, 1 hot side of peltier, 1 ambient)
1 mini float switch SMD Fluid Controls FS25 (I'm manually do ato so I just need the float switch to turn on an led once it reach the level)

Power supply:
12v 195w meanwell waterproof power supply

PI equipments:
PI 4 Or Pi zero W
2x LM2596 (5v and 10v convertion)
1x Single power relay for the peltier
1x Pimoroni automation hat (for all 24v and 5 to 12v equipments)
1x Adafruit 16-Channel PWM / Servo HAT (no sure if both of these hat will stack will together yet or not)

Since everything is low voltage I'm not planning using AC outlet. All equipment will be directly connected to the controller board.

Other optional features:
2x Kamoer x1 doser running awc. I not looking to control it but if I can build something in to read the current draw when it's on will be nice. I know the dosing time per cycle. My thinking is put an time limiter on it for backup just in case the doser malfunction.