Hello Shed Update: Let's head into the Shed for an update. This is my 614 watt hour battery. It's Uh 8s and it's four cells high so it's 4p. It has a balancer perched on the top there.

Um, it has a balancer. a BMS I mean this is a Dali or daily the MS there and it has a fuse. This is charged from a solar panel which comes in there, goes through this light bulb current limiter just to take the top edge of the maximum current and go straight into the battery. There is no charge controller.

Here's the uh what meter Voltmeter Ammeter Solar is coming in on blue and black there coming out on blue and black there and then it comes down to here. So that's the solar entry point that charges this battery and it's this solar panel. It's the left hand one of these two which is an all black 325 watt with the maximum current of about or pushing 10 amps. I Think the one on the right 240 watt is not currently in use.

So given that this has no charge controller. What stops this battery over charging When it's a nice sunny day like it is today and the battery becomes full? Well in this setup. this does this relay Waits until the battery gets to 28 volts. It then switches on and connects up this Buck converter which takes the 28 volts that it is at that time down to.

Nominal voltage on this pack is 25.6 volts down to 12 volts and puts it into this thing which to all intents and purposes is a big heater. but it's an Ant Miner L3 So while it's shoveling out lots of heat, it's also generating microscopic amounts of cryptocurrency. And this thing pulls about 20 amps at 12 volts, which translates to about 10 or 12 amps at this 25 volts. so that overwhelms the solar panel.

to ensure that when these batteries get up to 28 volts, they're never going to go any higher. Unless of course, the Ant Miner can't connect to the internet and then it won't fire up its hashing boards and then there could be an issue and the BMS would come into play then and cut off charging to these cells so that they can't be overcharged. So that's the 614 amp hour battery. That number comes from eight by four because that's the array size by 3.2 that's the cell voltage by 6, which is the amp hours capacity of each cell.

I Think that's 614. Let me check. Yes, that's correct. 614.4 amp hours Now feeding.

This is a solar panel and I'm going to be using the 240 watt. So 240 watt solar panel to feed this. Um, the bigger panel is going to go on a bigger battery. The bigger battery is partly here.

Um, there are eight of the 40 cells that it's going to include in its finished form. It's going to be eight cells wide by five cells high. There are another, oh, six by two twelve cells here on this battery, but these are all going to be combined into one battery. So that means that we're going to have another battery here which is Seven Six eight, uh, Watt hours.

and that will be fed with my 325 Watt solar panel. So we'll have that system in addition to the slightly smaller system. And then there's going to be another battery which is going to be a two, two, six, eight watt hours Lithium-ion phosphate. It's the same sort of thing.

It's eight cells, but only one in parallel. I'm not paralleling these up and they won't be charged. This pack won't be charged from a solar panel. It'll actually be charged from these two batteries when they get up to a certain voltage.

So in here you've got the relay switch. SW So you've got those switches. That's this thing here. the voltage controlled relay.

So when it gets to a certain voltage, it switches on and thus discharges the battery into whatever is down the line. And so what? I'm going to do then is have another switch on each of these. SW And they're going to go to Uh Buck Boost Converters to charge this larger battery. So it's going to look like this: You've got a second switch.

It might be at a different voltage set point. this might be say 27 volts. and at that voltage the Buck Boost comes in charges the larger battery, but probably at a lower current than the solar panel is charging this battery. So there will come a point where the voltage Rises a bit higher and then the switch at say 28 volts will turn on the minor.

The minor is the sort of ultimate protector of this battery from it being overcharged. But when these batteries are at a slightly lower voltage, then these Buck boosts will charge this larger 2268 watt battery. This is going to use the Prismatic cells that I bought a couple of years ago. But then what happens when this battery gets full? Well again, another SW and another minor.

And as you can see, I've got lots of miners here. There are four there. There's a couple down there. the one at the bottom will never work, but that's not important.

So this diagram is getting quite complicated. but there is a further complication. I Now have these three 12 volt lithium-ion phosphate batteries. I've done reviews on each of these I Think I can show them in the same uh shot.

Now are my contractual obligations are complete. So these three 12 volt lithium-ion phosphate batteries. So what will I do with these? So here they are three 12 volt lithium-ion phosphate batteries and I'm going to put these into zones. So I might for example have a lighting Zone for one of them.

Now, currently, my lighting system is up here. Well, that's the switches and the watt meter. And they're fed from these lead acid batteries which are fed from other lead acid batteries further down the garden. Um, specifically these three lead acid.

Trojan Batteries These big batteries. and they're fed from these three small solar panels 80 Watts that are mounted on the fence. and then there's a wire running up here, past the solar panels, up to this terminal block which was only ever meant to be temporary and into the lead acid batteries in the shed. So I'm going to phase out the lead acid because it's a bit long in the tooth now, but the lighting battery is only used Occasionally you can see the lights I've got there these LED strip lights, a couple there, another one, another two down there and those lights are only on as I say for part of the time.

So what I might do on the lighting battery is also incorporate this, which is my Wi-Fi access point. It's an Edimax unit and it has a five port switch in it which is mostly used for the ant miners. So the ant miners have wired ethernet so that they can communicate with the mining pool so that I get my monetary. Rewards Now another 12 volt battery might do the security camera.

So up here there's a blue Rams security camera that is Wi-Fi but it's got this cable which at the moment yeah goes into one of these USBS So it's actually powered by Mains and I've got a feeling it's got quite a high current pull. So whether that will effectively run on a battery I don't really know. And then down here, I've got a dehumidifier. It's this one.

Um, it's a Peltier dehumidifier. and they don't really work when it's cold because the way they work is that they just create a cold surface and blow air over it. Well, if every surface in the entire shed is cold, then it's not going to prioritize this thing. and it's not going to do a lot of dehumidification.

But let's call the third 12 volt battery The dehumidification. Zone It might do other things as well. It might run some things that require 12 volts. what else requires 12 volts? Oh well.

there's this. Um, it's a little zigbee Hub which is connected to Ethernet and then does zigbee for all the Toya smart Life or little home devices. Now, these are going to work slightly differently. Up here you've got these batteries which when they get nearly full, they just push power through these Buck boosts into another battery which then has the miner as its ultimate load.

These ones because they don't have the ability when they're being charged to offset that by discharging because they don't have a miner on them, are going to have another switch which is in a charge controller mode. So this will be something I'm calling give and take. So here we are give and take and the and as in capitals because it's a logical and So if this battery thinks it's got enough energy to give a bit of it to one of the 12 volt batteries, there'll be a switch that will run down here and there'll be a buck which will be there and then that will go into another switch and it will only transfer energy if this switch goes on so that the giver says okay I'm I'm okay to give some energy but also the taker says will I require some energy because I'm a bit low so you've got this and situation. If both switches are on, then the buck will transfer energy into the 12 volt battery and then I'll have a give and take arrangement for the 768 which will go into another switch.

There'll be another Buck converter and they'll have yet a third one for the big 2268. If I get around to doing all this, it's a lot of stuff which will have a give and take arrangement with the third 12 volt battery. So that's the grand plan. There are six batteries in all, three 25 volt batteries and three 12 or 12.8 They are really these are 25.6 um lots and lots of these little uh relay switch units which is over here this one.

I Have bought a couple more and they can be used in discharge controller or charge controller. This one is discharge controller so when it gets up to 28 volts, it switches on and we'll discharge into the load this battery thus preventing the solar panel from overcharging it. So this is going to require uh, quite a lot more space for these batteries to go up on shelves. Um, I have started working on a shelf in Module five if I come around here because you can't get through here because it's barricaded off if you come round.

I've started working on this shelf, but I don't like the fact that I attached the shelves to the outer paneling, so I'm trying to come up with a new way. In fact, you might be able to see it here of attaching the shelves to the main posts so that they're independent of the outer panels. But yeah, a lot of this is just being used for storage at the moment of just old Tut old projects and that sort of thing. More stuff here in Module 4, including the LED Matrix from 1992.

that was a more storage boxes and over here in module oh, what's this three? I think that was the vocoder power supply. My, um, come back to this because this uses a boost converter to raise to a very high voltage like 100 volts and then basically AC power supplies because they can also take DC to bring that down but also get you that galvanic isolation. Uh, what was that? That was the Super capacitor Bluetooth speaker. That's right, charged with an LTC 3780 module.

So that was an update from The Shed, including the Grand Energy Storage and Distribution idea that is currently in my head now. Can I step out of the Shed backwards without falling over possibly? Um, that's it for this video. So let's get the whole thing in cheerio.