Should be ok. Keep the 1.5 database file as backup. there are couple of bugs we have encountered in 2.x releases around pwm. Anything specific you are looking it use in 2.x ?
Looks awesomeMy build reefpi,
. Thank you for sharing
I looked at those boards since they are so inexpensive, but I decided against trying it. It's not compatible with the current reef-pi software, and it would require an additional analog to digital converter. Even after solving those 2 problems, it would probably still need to be isolated in order to get consistent readings. I think it would be interesting to play with, but I wouldn't trust it to run anything on my aquarium. Besides, I think the ADC and isolator are the majority of the cost in the better ph boards.
These are not worth if you are planning to have some accuracy in the reading . Your cost will be 50% on probe and 50% on circuit board. Without voltage isolator your reading will have jitter and they will be in accurate by one or two . You will be able to visualize the daily cycle though.
, excited to see progress on this front , as it’s being dragging is for some time .
I was just looking at this yesterday and I am really not sure why this wouldn't work as it is significantly less complicated and would cost less than building the whole circuit thing. I wonder if anyone else has tried this? Also I have had many relays for other projects and I do not see any reason why any are better or worse than others.
I have not gone through this exact video , but this is pretty much how I recommended building reef-pi power module till 1.0. The new adj powerstrip route is beginner friendly and avoids dealing with ac circuitry which is a huge safety concern and risky step for beginners. That’s pretty much the only two reason (safety and ease of use) for recommending this route, and we are aware that its mostly valid for only US. We also know that ADJ powerstips are not the best in terms of build quality. But they are cheap, and the relays used are good enough for most use cases.
The best way to understand the quality of relays is by reading their datasheet. You are looking at wear an tear rate (how many mechanical operations they are rated for), and their current/voltage rating. General recommendation from electronics community (in stack exchange) has been to always use components that are twice rated, or use a relay rated for twice the current that you think you'll draw form single equipment. Use the wear and tear value (cant recall exactly what its called, but its around mechanical operations) and an estimate of how many times will be on/off daily,, that gives you a rough estimate of how long you can expect the relay to run.
Hey I just went through the whole documentation for the build and this should work as it used a 5v relay and the circuit is designed for a 12v relay which needs all that extra stuff to step up and down from the pi to 12v relay.
Yup , you won’t need the voltage converters if all your circuit is 5v.
Correct me if I'm wrong but the voltage converter back powers the raspbery pi?
That is a nice feature and since the dosers and lights need like 12v and 10v it may be nice to step down twice and not have a few power supplies instead.
but I will definitely wait as it seems like it could be in the next month. For pH calibration @Ranjib would 4.00pH, 6.86pH, and 9.18pH work?
Yes. and thats exactly how I arrived at 12v, because light , peristaltic pump etc all require 12 or 10v. I later realized that starting with higher voltage also means i can get more power with less current, which is handy. Breadboard, jumper wires etc has 1-2 A current limit, and if you start with 5v then you may need more than 3A.
