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

Ranjib · Jun 14, 2018

Schreiber said:
That's where I'm trying to name & assign them, in the connectors settings.

I was able to bypass the problem by using my tablet connecting to the reef pi server instead. Now I'm just having issues getting the relays to respond.

what the log says?

Ranjib · Jun 14, 2018

aquaalgae said:

So I'm hoping to be able to try this out this weekend, but if you have a chance to glance at it, does this look like it might work?

Code:

import requests
import time
from datetime import datetime
from datetime import time
from datetime import date
import math


num_expansions=15
#0 = White East
#1 = White Center
#2 = White West
#3 = Blue East
#4 = Blue Center
#5 = Blue West
#6 = OCW East
#7 = OCW Center
#8 = OCW West
#9 = Violets East
#10 = Violets Center
#11 = Violets West
#12 = Moonlight East
#13 = Moonlight Center
#14 = Moonlight West
#15 = NOT USED


#on time for channels 0-15  (15 is not used)
on_hour=[9,9,9,8,8,8,9,9,9,8,8,8,19,19,19,0]
on_minute=[0,15,30,0,15,30,15,30,45,15,30,45,0,15,30,0]

#off time for channels 0-15  (15 is not used)
off_hour=[18,18,18,20,20,20,17,18,18,19,20,20,9,9,9,0]
off_minute=[0,15,30,0,15,30,45,0,15,45,0,15,0,15,30,0]

#how long it takes for light to dim from min to max and max to min
slope_length=[100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,0]
slope_length=[i*600 for i in slope_length]

#the minimum PWM value from 0-4095
startPWM=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]

#the maximum PWM value from 0-4095
endPWM=[1433,1433,1433,3841,3841,3841,1638,1638,1638,3686,3686,3686,220,220,220,0]
pwmDelta=[y-x for x,y in zip(startPWM,endPWM)]

pwm_value=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
smoothPhase=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
lastsecond=0

while True:

    #to run the pwm function 1 time per second
    import time
    currentsecond=int(round(time.time()))
    currentsecond=int(currentsecond)
    if currentsecond>lastsecond:
        lastsecond=currentsecond+0 #add how many seconds delay over 1 to 0

        now=datetime.now()

        current_hour=now.hour

        current_minute=now.minute

        current_second=now.second
              
        for a in range(num_expansions):

                start=[i*60 for i in on_hour]
                start=[x+y for x,y in zip(start,on_minute)]
                start=[i*600 for i in start]
                end=[i*60 for i in off_hour]
                end=[x+y for x,y in zip(end,off_minute)]
                end=[i*600 for i in end]
                current=(current_hour*60)+current_minute
                current=(current*600)+(current_second*10)

                if current<=start[a]:
                        pwm_value[pwm_value[a]]=0
                if current>=end[a]:
                        pwm_value[pwm_value[a]]=0
                if current>start[a]:
                        if current<end[a]:
                                pwmDelta[a] = endPWM[a]-startPWM[a];
                                if current > (start[a] + slope_length[a]):
                                        if current < (end[a] - slope_length[a]):
                                                #we are at the maximum value
                                                pwm_value[a]=endPWM[a]
                                        else:
                                                #we are in the phase down
                                                smoothPhase[a]=(((end[a]-current)/slope_length[a])*180)+180
                                                pwm_value[a]=startPWM[a]+(pwmDelta[a]*((1+(math.cos(math.radians(smoothPhase[a]))))/2.0))
                                else:
                                        #we are in the phase up
                                        smoothPhase[a]=(((current-start[a])/slope_length[a])*180)+180
                                        pwm_value[a]=startPWM[a]+(pwmDelta[a]*((1+(math.cos(math.radians(smoothPhase[a]))))/2.0))
                        else:
                                #we are after the ramp down has finished
                                pwm_value[a]=0
                else:
                        #we are before the ramp up has started
                        pwm_value[a]=0


                #print('Press Ctrl-C to quit... PWM value for channel',a,'is',pwm_value[a])

                if (a==0) or (a==3) or (a==6) or (a==9) or (a==12):
                    light_id = "East"
                if (a==1) or (a==4) or (a==7) or (a==10) or (a==13):
                    light_id = "Center"
                if (a==2) or (a==5) or (a==8) or (a==11) or (a==14):
                    light_id = "West"
                pin = a #this needs to change to correct pin
                ip = "127.0.0.1:8080"
                auth = ("reef-pi", "reef-pi")
                u = "http://" + ip + "/api/lights/" + light_id

                resp = requests.get(u, auth=auth)
                light = resp.json()
                light["channels"][pin]["auto"] = False #change the light to fixed mode
                light["channels"][pin]["fixed"] = pwm_value/40.95 #PWM value in % - should be changed in future
                resp = requests.post(u, auth=auth, json=light) #update light
              

                #pwm.setPWM(a, 0, pwm_value[a])

Some changes required. you have imported time twice. remove the second import statement inside the loop. light_id 's are not light names. If I understand correctly , you have three lights defined, and each of them has 5 channels (East, West, Center). The final value has to be converted into int, pwm_value/40.96 can be a float, so wrap that in int(pwm_value/40.96). I'll share an updated code soon...
Question: your lights dim smoothly across the entire 0-100% range? For kessil i have seen we cant dim it below 13% (it flickers below that), i was under the assumption that all other lights have same limitations.

aquaalgae · Jun 14, 2018

Ranjib said:
Some changes required. you have imported time twice. remove the second import statement inside the loop. light_id 's are not light names. If I understand correctly , you have three lights defined, and each of them has 5 channels (East, West, Center). The final value has to be converted into int, pwm_value/40.96 can be a float, so wrap that in int(pwm_value/40.96). I'll share an updated code soon...
Question: your lights dim smoothly across the entire 0-100% range? For kessil i have seen we cant dim it below 13% (it flickers below that), i was under the assumption that all other lights have same limitations.

I am not sure of the lowest PWM value that I can dim to, but it is less than 1-2%

Schreiber · Jun 14, 2018

I'm all good now. Is there something in the code that prevents is from using GPIO4? I tried starting on that one & it refused to work. All the others worked fine. I may just have a dead pin.

jcmental · Jun 14, 2018

Ranjib said:
I think I have mentioned earlier, but I’ll repeat that even with this, the kessil controller works flawlessly if I use pca9685 and a dedicated build

My lights work fine to, and I got a job lot of lm2569's from china 20 for £3.00 or in your money I'm guessing around $5

Ranjib · Jun 14, 2018

Schreiber said:
I'm all good now. Is there something in the code that prevents is from using GPIO4? I tried starting on that one & it refused to work. All the others worked fine. I may just have a dead pin.

gpio4 is used by temperature sensors

Des Westcott · Jun 15, 2018

Hey

Next dumb question :-)

The wires on my FS-IR02 level sensor are way too short. Will it be a hassle if I extend them? I can't imagine so as it's only an on / off signal, not a reading like Ph or Temp??

Thanks

janos · Jun 15, 2018

Hi to all. Like to ask do i need to use external 5v to drive my 8ch relay board,or just use the Raspberry 5v pin.Thank you

aquaalgae · Jun 15, 2018

Ranjib said:
Some changes required. you have imported time twice. remove the second import statement inside the loop. light_id 's are not light names. If I understand correctly , you have three lights defined, and each of them has 5 channels (East, West, Center). The final value has to be converted into int, pwm_value/40.96 can be a float, so wrap that in int(pwm_value/40.96). I'll share an updated code soon...
Question: your lights dim smoothly across the entire 0-100% range? For kessil i have seen we cant dim it below 13% (it flickers below that), i was under the assumption that all other lights have same limitations.

I've made the changes to the code that you said, except for the light id. Where do I find the light_id?

janos · Jun 15, 2018

Hi to all.try to install reef-pi now for 4-5 times,something always wrong.Yesterday was almost working,today morning i try again to log in with localhost:80 and something go wrong again,it try to download reef-pi when i go to web browser.Evennow i try to downgrade to reef-pi1.0 now go to the web browser but give me wrong msg. reef-pi is running but the msg is 404 not find

janos · Jun 15, 2018

Hi to all.try to install reef-pi now for 4-5 times,something always wrong.Yesterday was almost working,today morning i try again to log in with localhost:80 and something go wrong again,it try to download reef-pi when i go to web browser.Evennow i try to downgrade to reef-pi1.0 now go to the web browser but give me wrong msg. reef-pi is running but the msg is 404 not find

Erica-Renee · Jun 15, 2018

Des Westcott said:
Hey

Next dumb question :)

The wires on my FS-IR02 level sensor are way too short. Will it be a hassle if I extend them? I can't imagine so as it's only an on / off signal, not a reading like Ph or Temp??

Thanks

Yes .. I have one that is 12 feet long in a sensor

Erica-Renee · Jun 15, 2018

janos said:
Hi to all.try to install reef-pi now for 4-5 times,something always wrong.Yesterday was almost working,today morning i try again to log in with localhost:80 and something go wrong again,it try to download reef-pi when i go to web browser.Evennow i try to downgrade to reef-pi1.0 now go to the web browser but give me wrong msg. reef-pi is running but the msg is 404 not find

are you running Headless and what version of pi are you using?
If you are running gui on the pi computer itself you type "localhost " into your browser..

You may need to clear cache and browser history on the Computer your using to access the pi.. Sometimes rebooting your Internet modem and router helps as well.
If the above does not apply try following the Troubleshooting guide here
https://reef-pi.github.io/additional-documentation/troubleshooting/

Note if you go into settings do not turn on the pca 9685 driver (check mark box) Unless you have board Connected and powered on.. It will Crash your reef-pi .....

Hope this helps

Ranjib · Jun 15, 2018

Des Westcott said:
Hey

Next dumb question :)

The wires on my FS-IR02 level sensor are way too short. Will it be a hassle if I extend them? I can't imagine so as it's only an on / off signal, not a reading like Ph or Temp??

Thanks

Should be ok. I have also bought other optical sensors (with same 4pin jst connector) with longer cable length
https://www.amazon.com/dp/B00Z9NUJWW/

Ranjib · Jun 15, 2018

janos said:
Hi to all. Like to ask do i need to use external 5v to drive my 8ch relay board,or just use the Raspberry 5v pin.Thank you

dont use pi's 5v pin. you cant draw a lot of current from there... you can power things like pca9685 or some other ICs, but not LEDs. Use a dedicated power supply for the LEDs.

Ranjib · Jun 15, 2018

aquaalgae said:
I've made the changes to the code that you said, except for the light id. Where do I find the light_id?

you can get the light ids by making an api call to list all lights and iterating over the result, each entry is one light

Code:

resp = requests.get("http://localhost/api/lights", auth=auth)
lights = resp.json()
lights[0]["name"]
lights[0]["id"]

Ranjib · Jun 15, 2018

janos said:
Hi to all.try to install reef-pi now for 4-5 times,something always wrong.Yesterday was almost working,today morning i try again to log in with localhost:80 and something go wrong again,it try to download reef-pi when i go to web browser.Evennow i try to downgrade to reef-pi1.0 now go to the web browser but give me wrong msg. reef-pi is running but the msg is 404 not find

Can you tell us more about your setup.. what pi, how you installed it, share the logs etc.

philshel · Jun 15, 2018

@Ranjib I was wondering what you thought of this project? If it's something that might be usable or useful for reef-pi projects.
https://www.kickstarter.com/project...ay-card-for-raspberry-pi-2-3-zero/description

Erica-Renee · Jun 15, 2018

philshel said:
@Ranjib I was wondering what you thought of this project? If it's something that might be usable or useful for reef-pi projects.
https://www.kickstarter.com/project...ay-card-for-raspberry-pi-2-3-zero/description

I think this has been done .. https://www.amazon.com/Raspberry-Pi-Expansion-Module-XYGStudy/dp/B01G05KLIE

philshel · Jun 15, 2018

Erica-Renee said:
I think this has been done .. https://www.amazon.com/Raspberry-Pi-Expansion-Module-XYGStudy/dp/B01G05KLIE

I see that, though the "kickstarter" version is the only 8 relay version I find. I guess my question would be if there is an advantage to this approach as opposed to a separate board?