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

[Ranjib]

I am currently trying to run a RB light with a MarsAqua. The mars has to run on Active High, where the RB with this circuit has to run on Active Low? Is there a mod to this circuit that allows me to run them on the same lighting channel without them being opposite of each other?

There’s an active high/low setting per channel. That should do it

 

[PHopkins]

There’s an active high/low setting per channel. That should do it

Thanks, I was running straight off the Rasberry Pi so I only had 2 pwm channels. I ordered a PCA9685 board. That should solve my problem.

 

[PHopkins]

There’s an active high/low setting per channel. That should do it

I am getting no PWM output from the PCA9685 board

when I run sudo i2cdetect -y 1 I get the following, which I believe. But when I set an output to my lights I get 0v from the pins. What is not set up correctly? I get a PWM signal from the Rasberry Pi pins but not the PCA board



0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: 40 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: 70 -- -- -- -- -- -- --

 

[Michael Lane]

I am getting no PWM output from the PCA9685 board

when I run sudo i2cdetect -y 1 I get the following, which I believe. But when I set an output to my lights I get 0v from the pins. What is not set up correctly? I get a PWM signal from the Rasberry Pi pins but not the PCA board



0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: 40 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: 70 -- -- -- -- -- -- --

That's good output from i2cdetect. The next thing I would check is to make sure the checkbox to enable PCA9685 is checked.

 

[PHopkins]

That's good output from i2cdetect. The next thing I would check is to make sure the checkbox to enable PCA9685 is checked.

Where do I find that check box?

 

[Michael Lane]

It should be under the configuration | settings tab.

 

[PHopkins]

It should be under the configuration | settings tab.

Thank you, I figured it out. I don't know if I have an older style board, or if it was just something left out in the guide. But I put 3.3v power to the V+ input on the board and it started working. So I just put a jumper between the VCC and V+ input on the opposite side of the board

 

[janos]

Hi to all just a simple Question,could we use DHT22 temp sensor,(beside DS1820)just to see room temp and humidity.?Thank you

 

[Ranjib]

Hi to all just a simple Question,could we use DHT22 temp sensor,(beside DS1820)just to see room temp and humidity.?Thank you

Unfortunately, reef-pi only supports ds18b20 sensors right now for temperature monitoring.

 

[janos]

Thank you Ranjib as always first to answer.

 

[brandon clow]

Yes. One of them. Actually I had three buster based build running (all in testing phase, against the garage tank). Two are pi 3. The pi zero one i just took offline for some rework.I think I'll have the telemetry data (prometheus/grafana), if theres any obvious performance/system issue it should be visible on those metrics. I can see stretch and buster based build performance.. from app layer to low level syscalls.

Yes. One of them. Actually I had three buster based build running (all in testing phase, against the garage tank). Two are pi 3. The pi zero one i just took offline for some rework.I think I'll have the telemetry data (prometheus/grafana), if theres any obvious performance/system issue it should be visible on those metrics. I can see stretch and buster based build performance.. from app layer to low level syscalls.

I can say that I am having success with buster on a 4B 2gb at about 3 weeks in. If I can get my 3B rev 1.2 back up and running I will report the results also.

 

[sfgabe]

I'm also having a problem on Buster (mine is with 3.0) on a Pi Zero build. It's a clean install and I've tried 2 cards. Both have worked ok, am able to setup config etc, but then it get into a cycle where it works for 5 minutes to an hour or two (random) and then reboots. No errors that I can see in the logs. I'm trying to troubleshoot but reading through some of the forums, it seems like Buster is not particularly stable, especially on older / smaller pi's. I'm going to downgrade this weekend and see if that fixes it.

Just a follow up - as a last resort before downgrading I swapped out a new-out-of-the-package zero and it has been working flawlessly. I'm coming up on about two years of having various tiny smart systems in my house working on Pi Zero W's and it seems like after a while something shorts out somewhere. Maybe I just got a bad bunch, but I'm glad my reef system is on a pi 3, as the full size ones seem to be more consistent.

 

[Ranjib]

Some of my pi zeros are running for almost two years. I have lot less pi 3 based builds, compared to zeros. I guess I was lucky. I got another new pi zero today.. I'll see how that goes

 

[MikeSpike]

Excuse my ignorance here. Trying to get the aTO module to work but it just leaves the outlet on (even if I set it to off manually it just goes back to on) I have just connected it straight to the GPio pins. ? I have not used any resistors please let me know if this is required or you think it’s something ekse

 

[Ranjib]

Excuse my ignorance here. Trying to get the aTO module to work but it just leaves the outlet on (even if I set it to off manually it just goes back to on) I have just connected it straight to the GPio pins. ? I have not used any resistors please let me know if this is required or you think it’s something ekse

tell us little bit about your setup, what sensor, inlet configuration, check period etc. Is it working in reverse mode?

 

[MikeSpike]

I have connected the red wire (ground) to gpio 39. Blue wire (vcc) to gpio 2 and White wire signal to gpio 23. Check period is 10 secs and have tried both reverse and normal mode. Yellow wire I have left unconnected

 

[sjeff35]

Ok, having a brain fart here. I had this working in the past, but I'm stuck now.

Pi 3 running 2.5 only for my Kessil A360. I have it running and it's modifying the voltages for channel 1 and 2, but I remember in an older version you had to set the Min and Start or the lights would flicker. I've played around with different values, but when it gets below 14 it starts flashing. What am I doing wrong?

Thanks

 

[Ranjib]

I have connected the red wire (ground) to gpio 39. Blue wire (vcc) to gpio 2 and White wire signal to gpio 23. Check period is 10 secs and have tried both reverse and normal mode. Yellow wire I have left unconnected

you are using photo sensor or float switch? do you have build thread I can look at?

 

[Bigtrout]

Ok, having a brain fart here. I had this working in the past, but I'm stuck now.

Pi 3 running 2.5 only for my Kessil A360. I have it running and it's modifying the voltages for channel 1 and 2, but I remember in an older version you had to set the Min and Start or the lights would flicker. I've played around with different values, but when it gets below 14 it starts flashing. What am I doing wrong?

Thanks

Are u using the raspberry pi gpio for your pwm?
If so, you may need to change the frequency, its somewhere on the config pages.

 

[sjeff35]

Are u using the raspberry pi gpio for your pwm?
If so, you may need to change the frequency, its somewhere on the config pages.

Yes, (I think) I'm using the RPI. Let me check the config doc.

Thanks