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

bishoptf · Feb 7, 2019

dmolavi said:
It's what the sell on adafruit. The data sheet shows those two as normally open.

To be honest I always plug in the other side and verify which pins go to which contact. My guess only one is needed for the shell ground.

Ranjib · Feb 7, 2019

Tom Bishop said:
To be honest I always plug in the other side and verify which pins go to which contact. My guess only one is needed for the shell ground.

Same here :0) .

16Reefer170 · Feb 7, 2019

I have a small question if you all don’t mind. Reef-pi reports temperature to four decimal places, but the sensor only has a resolution of 0.0625°C, which converts to 0.1125°F. If reef-pi could round the temp data to .1°F (one decimal place) there would be no loss of resolution, and the graphs would be easer to read. Any thoughts on this?

Ranjib · Feb 8, 2019

16Reefer170 said:
I have a small question if you all don’t mind. Reef-pi reports temperature to four decimal places, but the sensor only has a resolution of 0.0625°C, which converts to 0.1125°F. If reef-pi could round the temp data to .1°F (one decimal place) there would be no loss of resolution, and the graphs would be easer to read. Any thoughts on this?

The historical values are hourly average, hence can be of higher precision (like the average of 45.2 and 45.3 is 45.25) than the actual readings. Though I have seen couple of time higher precision in current readings due a glitch. If you are experiencing that, let us know, its a bug.

Ranjib · Feb 8, 2019

i should probably also call out that its a minor UX bug that should not impact any controller behavior.

Mikeneedsahobby · Feb 8, 2019

Ranjib said:
The historical values are hourly average, hence can be of higher precision (like the average of 45.2 and 45.3 is 45.25) than the actual readings. Though I have seen couple of time higher precision in current readings due a glitch. If you are experiencing that, let us know, its a bug.

I have this issue on current temperature display. Right now I am getting 4 decimal display. I have seen more. I am running version 2.1 so if it was fixed after this than it is my fault for not upgrading.

Tristanzs · Feb 8, 2019

So I left my ATO switch in the on position all last night and can see where PI shut it off after the selected amount of time but then it came back on again every hour after that for the duration of the time between when it activated and my alert time. Is this intentional? I was under the impression that the alert would disable it until I worked on it. It appears it disables for 1 hour and then reenables the device. My primary concern here is if I'm out of town and the switch fails in the on position every hour it'll turn on my pump and run it for the duration I selected and eventually overflow my sump.

16Reefer170 · Feb 8, 2019

Thank you very much for your response. I do not know if it is a glitch, but my temperature graph is out to 4 decimal places

. I am running version 2.2 on a Pi Zero W.

buddy. · Feb 8, 2019

I changed my host name and rebooted and now none of my temperature sensors are showing up.
My temps are still on my dashboard and being read properly but I am being spammed with email alerts.
If I try and add a new temperature I can't because the sensors aren't showing anymore.

***EDIT- I tried to reboot but it didn't work so I powered off and back on and all my sensors are working as they should be.

dmolavi · Feb 8, 2019

Can anyone recommend good 3.5mm panel mount jacks that can be mounted to a 3mm thick panel? The adafruit ones don't quite work...

Ranjib · Feb 9, 2019

dmolavi said:
Can anyone recommend good 3.5mm panel mount jacks that can be mounted to a 3mm thick panel? The adafruit ones don't quite work...

https://www.amazon.com/dp/B01CVGD4UI/
these should be ok

Ranjib · Feb 9, 2019

buddy. said:
I changed my host name and rebooted and now none of my temperature sensors are showing up.
My temps are still on my dashboard and being read properly but I am being spammed with email alerts.
If I try and add a new temperature I can't because the sensors aren't showing anymore.

***EDIT- I tried to reboot but it didn't work so I powered off and back on and all my sensors are working as they should be.

I hear you. I dont have anything immediately planned, but when I start working on temperature calibration (after ph driver is finished), I may touch upon this. I think if we use a moving average of some sort that will eliminate those cases where ds18b20 gives bad data in the very beginning. As for this particular case, do you think setting the limit on alerts (throttle setting under telemetry) will help? I'll keep noting down these signals so that I can attack them collectively (as many as I can) when I work on that part.

Ranjib · Feb 9, 2019

16Reefer170 said:
Thank you very much for your response. I do not know if it is a glitch, but my temperature graph is out to 4 decimal places

. I am running version 2.2 on a Pi Zero W.

Some of this can also happen due to celsius to fahrenheit conversion logic.

Do you all think two decimal precision is enough? I personally think so. If we all agree I can make that a standard thing across all reef-pi metrics.

Mikeneedsahobby · Feb 9, 2019

Ranjib said:
Some of this can also happen due to celsius to fahrenheit conversion logic.

Do you all think two decimal precision is enough? I personally think so. If we all agree I can make that a standard thing across all reef-pi metrics.

I think 1 digit is enough. The resolution of the sensor is 0.11 F. Showing precision beyond the resolution might make someone feel good but it has no meaning.

dmolavi · Feb 9, 2019

Ranjib said:
https://www.amazon.com/dp/B01CVGD4UI/
these should be ok

The specs for this state it's for panels up to 0.075in (2mm). This is gonna be a tough nut to crack. I could countersink the hole, but it would need to be done by hand, as there isn't enough room for my drill to get into where it needs to be.

dmolavi · Feb 9, 2019

Think I found ones: https://www.arrow.com/en/products/54-00081/tensility-international

The datasheet shows 7.1mm threading (plus 1.5mm for chassis), so I think these will work. For $2 each and free shipping, I'll give them a shot

georged · Feb 9, 2019

dmolavi said:
The specs for this state it's for panels up to 0.075in (2mm). This is gonna be a tough nut to crack. I could countersink the hole, but it would need to be done by hand, as there isn't enough room for my drill to get into where it needs to be.

Tap the panel and don't bother using the supplied nut.

b4tn · Feb 9, 2019

dmolavi said:
Think I found ones: https://www.arrow.com/en/products/54-00081/tensility-international

The datasheet shows 7.1mm threading (plus 1.5mm for chassis), so I think these will work. For $2 each and free shipping, I'll give them a shot

I love that website. I still feel guilty thought when I order $2 in parts and get it free over night lol

Bigtrout · Feb 9, 2019

Is their any news on the PWM frequency issues?

Ranjib · Feb 9, 2019

dmolavi said:
The specs for this state it's for panels up to 0.075in (2mm). This is gonna be a tough nut to crack. I could countersink the hole, but it would need to be done by hand, as there isn't enough room for my drill to get into where it needs to be.

I generally use dremel for the same job