Reef Angel Forum

:) Yeah, I learned everything about Arduino from the folks here. Especially Roberto who has been a great help for these little projects. Sounds like we had similar issues with communication over I2C and the hub. The ADUM1250 chip separates the I2C from the DO powered with a secondary 5V source. I ac...

That's the direction I'm thinking as well. Unfortunately I don't think you can put the Atlas DO in continuous read when in the I2C format. I'd imagine it might stabilize the signal as well in continuous mode than to keep reinitializing a read every few seconds. Here is my altered PH extension file t...

I'll post the code soon (I'm not at my PC) but let me know how the power iso works. It worked fine for me when connected to the outlet box directly, but not with the hub. I tried 3 power isolator so and only the adum1250 chip has worked with the expansion hub.

Jon

I forgot to mention that the interference and I2C issues only happen with the hub for me. Like you've experienced it works more robustly connected to the relay directly.

-Jon

Hello Mur, I have this same unit on my RA. I had to do a number of things to make it work for me. First, like you've done I had to modify a library (phExp in my case) to report the ORP result. Second, I set it up on the I2C to send a request for a DO reading followed a few seconds later by a read re...

Yep, that fixed it for me. Looking forward to hearing more about the starboard.

same here, no luck connecting yet.

Hi all,

There was a cool TED talk on marine fluorescence if you want to check it out...

https://www.ted.com/talks/david_gruber_ ... _creatures

Jon



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I just stumbled on these Arduino polargraphs...https://www.youtube.com/watch?v=2TiCZmJC9aU
I'm thinking this might have to be Camera dolly version 2.

-Jon

Odd, a pH probe is really just a fancy voltmeter and therefore is often influenced by stray voltage. Sometimes I think it is more useful as a stray voltage meter than pH. I have replaced float switches, flow meters, and temp probes leaking voltage into the tank. I'm not sure how it would read a high...

I've slowly dedicated an electronics project center to the RA.

It can take a little while for the pH to climb back up. For instance, when I calibrate I leave the probe in the calibration buffer for 5-10minutes to allow it to settle in.

Jon

I have this same issue when one of my flow meters starts to go bad. The pH meter is a quick indicator that one is going bad as even a small voltage leak causes the pH to drop quickly. If you simply start unplugging the potential offending instrument, you should be able to see it jump back up.

-Jon

How do you convert an ascii series that reports say "8.54" to an integer of "854". The decimal is giving me grief, if you use atoi you get "8". I can see it on the monitor, but I'd like to see it on the portal as well. I want to get this data type into an integer or may...

Has anyone considered using one of these to redirect flow from the RA? https://www.sparkfun.com/products/10456 I'm sure they could be incorporated and controlled, I just don't know how you might use them in the aquarium setting as opposed to just controlling the pumps. Perhaps if you had a backup pr...

congrats!

Is the pH expansion library code in the globals? I can take a look. Maybe another option would be to use a virtual outlet to switch between one set of custom variables and another set? I could just refresh after setting the VO off or on and see the new variables. It doesn't allow me to track all of ...

I need one more custom variable slot and I was thinking maybe I could use the pHexpansion location on the portal display. Is there a way I can make the RA assign a value to the pHexpansion so it reports what I want?

Thanks,
-Jon

I want to fit two small reservoirs under my stand with separate pumps so I don't have to add fill the top off tanks as often. I have two of float switches installed to determine which reservoir is full. Will it work OK if I have two ATO functions like this? void CheckLevels() { //Overflow blocked al...

In my case, I just put my 'less important' temperature probes in the custom variables where the whole number temp is sufficient. I can't afford to use other custom variable slots for the decimal as I have them all tied up with other measurable (flow meters, lights, etc). Maybe more custom variables ...

Yes, it looks fine on the LCD, but I want to track them as a custom variable. It looks like the custom variable is a byte.

-Jon

I recently added more temp probes and they are working fine displayed on the LCD, but since they aren't bytes they don't display as the temp in ascii. Can you and if so, how do you code to display the temperature? Maybe only the rounded to the whole number if it won't handle the decimal? Thanks, -Jon

It depends on how you want to 'see' the temperature from the extra probes. Some options are on the LCD as a custom screen, on the portal as a custom variable, and or from internal memory as a wifi request.

-Jon

I found these online which should make it easy...

http://www.amazon.com/gp/product/B000E9 ... ge_o00_s00

-Jon

I finally got the I2C communication working with my controller box and it works! :ugeek: It is really fun to mess with and I can't wait to use it a bit more, but I still have to work out some bugs. Here is a clip of it controlled from the RA and my phone. I made a little box with the Arduino, the Bi...

The base is from OpenBuilds http://openbuildspartstore.com/mini-v-wheel-plate/ as part of the build and I just drilled a couple holes in the base and used this arm http://www.aliexpress.com/item/360-Rotating-Flexible-Glass-Car-Camera-Vacuum-Suction-Mount-Bracket-Windscreen-For-DVR-DV-Camera-GPS/2045...

Hi all, I am in the finishing up an old project that I started awhile ago. I have a webcam on the end of my tank, but it isn't great at really seeing things in the tank. I tried a wide lens which helps a bit on the broad perspective, but not on a specific area. I really just wanted to watch my clown...

nice. I've been wanting to put a reservoir signal in my top off water jug forever, but couldn't figure out how to get a long enough float towards the bottom of the reservoir. The silicone seal on the bottom makes me a bit nervous, but a tight seal with a layer of silicone should hold.

-Jon

nice. I've been wanting to put a reservoir signal in my top off water jug forever, but couldn't figure out how to get a long enough float towards the bottom of the reservoir. The silicone seal on the bottom makes me a bit nervous, but a tight seal with a layer of silicone should hold.

-Jon

I used my old RA as an auxillary monitor for awhile. In theory you could use any of the ports on the head unit and send data over I2C. It required splicing a cable though. http://forum.reefangel.com/viewtopic.ph ... 2&start=30

Jon