How much current does it draw with all the relays on?
Jaycar sell plenty of approved 12V or 5V plug packs, up to 3A.
I made the same thing. As I used 24V AC solenoids I used a 24VAC plug pack from Jaycar and switched that through the relays as well as sending some via a home made rectifier (4 diodes and a capacitor) and then into a buck converter to drop it to 5 V to run the ESP board and the relay board.
Edit: if that has its own voltage regulator then you could pipe the 24V straight in
Thank you both.
I will look into max current and if it has a voltage regulator.
Sounds like I want to match the solenoid voltage to the voltage of an AC power supply?
Edit,
Reading the aliexpress descriptions such as this one and it actually specifies a dc power supply.
Yes the board needs DC which is what the rectifier does in my case (changes AC to DC). There are DC solenoids so you need to work out which ones of those you are getting in order to work how best to proceed.
Morning everyone!
So, not sure if this is the right topic for this, but HA just had their second year of the voice announcement. Among other things was the ability to do local speech to text and text to speech. In their blog post about it, they have a section for ESPHome mics and speakers, and were talking about using something like this as a cheap way to have a mic and speaker that works with HA
My question for this topic (and sorry if itās a very basic question, I donāt know much about hardware and how a lot of things work) is whether buying stuff like this from overseas is ok for use in Aus - I donāt see any official certification for us here, but Iām pretty sure itās just a 5v cable in. Is that ok to buy from overseas and use here, or are there risks involved and it shouldnāt be done?
Thanks in advanced!
I think we must have discussed this before (maybe on whirlpool) as the rectifier rings a bell and it scared me off at the time.
Iād like to keep things simple, so if that means finding a dc power supply and tracking down 24v DC solenoids that sounds like a plan. (EDIT: reading that AC solenoids can work with DC power? Does the power supply voltage need to match the solenoid voltage for this type of relay board?)
I think iāll run a main line around the perimeter of the backyard, then junctions with solenoids in line off that to my zones. Plan for now is 4 lawn sprinklers in 2 or 3 zones and one raised garden bed zone with small sprayers or drippers. iāve made a scale architectural drawing below
Just be aware that āstandardā solenoids are 24Vac so really itās best to stick with those. If one fails you can easily by a replacement at Bunnings or irrigation shop. Using a rectified etc to use that same 24Vac and convert to 5Vdc is not hard. Itās what I did.
I am still hugely confused as to what i actually need to do so i think iāll find a thread on this topic to avoid clogging this one with my questions. Thanks all.
This is old as I havenāt shared my latest setup yet but it should give you some idea of what you can do. Somewhere I have a post showing my enclosure etc but again, itās old. I now run a PoE ESP32 as the controller and the relay board is powered from that so the 24Vac is only switched by the relays and sent to the solenoids and pump contactor (I have a bore).
Thereās a reason swimming pool lights, and irrigation systems etc use AC power - it is less susceptible to corrosion than DC. ChatGPT (via Bingās new AI search) sums it up pretty well:
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Id also say you probably donāt want to have the solenoids all scattered around like that as you have to run wires to each of them. Typically you have all the solenoids in a box in the garden and you run a multi core cable to it. In your case you could use five core as you need one wire for each solenoid and then a common ground for all. Here is an example of a manifold https://sunshoweronline.com.au/complete-irrigation-manifold-bundles-inc-hunter-pgv-valves/https://sunshoweronline.com.au/complete-irrigation-manifold-bundles-inc-hunter-pgv-valves/
Looking at this link the DC solenoid may not be fail safe. If you lose power it might stay open but this would depend on how your specific one works How to Choose a Solenoid Valve - Irrigation Express
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I assumed multicore wire would work in either case, iād just be tapping into it at the desired location?
Only reason I was really thinking of doing it that way was a single cable for power would probably be cheaper than 5+ runs of irrigation from the same point of origin. Am i overthinking it?
I think it will be cheaper to have everything in one place as one large irrigation box will likely be cheaper that four smaller ones. Additionally tapping into a cable at multiple points is just adding in points of failure. Again the normal way of doing it is a manifold in a box with multi core cable to the box.
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Hereās the manifold in my back yard, one main water feed branching into 5 runs. The little green box is an isolation valve in case thereās a leak in the manifold box. Sorry this is getting really off topic now 
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Nice, I got excel life non-smart through house with LED rings which i wanted to keep but cant find a button that will allow me to retain them
do these excel life smart ones have a blue led in them that can stay on full time?
If i got these could i just get a conbee ii to run them?
Donāt buy conbee ii. Tech has moved on.
Hey just wondering how the f do you get that zigbee powerboard to switch to pair mode? Iāve long pressed the button and the light starts flashing, but nothing pops up on Zigbee2MQTTā¦
Iāll try rebooting home assistant, and try againā¦ Starting to wonder if Iāve got a dudā¦
Edit: that fixed it. Shutting down home assistant via the terminal āha host shutdownā - a neat trick for when you have zigbee issues (it clears some cache stuff that survives a normal reboot)
Now it works. Weird.
any double power points with CSE7766 power monitoring chip?
Did anyone buy these Zibee dimmers? It kills me that they must turn on with 100% brightness before they dim down to the level they were turned off at - Has anyone been able to get around this and have them turn on at the desired brightness?
1am walks to the bathroom are very bright for a few seconds.