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Adrusa's Posts

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Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 12:59pm On Feb 21, 2025
SourYoghurt:


the installer claims that it was done in parallel.
Your installer didn't know what he was doing. All the panels should be in one single series to take advantage of your MPPT.
Computer MarketRe: OK by adrusa: 12:18pm On Feb 15, 2025
Who will buy a broken 6 years old phone for 150K? Are you using juju to sell it?
Technology MarketRe: LG LG2 65" OLED With Two Invisible Tiny Lines On The Screen. N680,000 by adrusa:
abidemidare:
LG LG2 65" OLED with two invisible tiny lines on the screen. 750,000

Tel and Whatsapp: 08062466118 and 08097227816
Go and throw it away. Only a stupid person will knowingly buy a TV with damaged screen. It is only two lines now, it will soon be twenty.

By the way, if the lines are invisible, how did you see and photograph them?
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 10:07pm On Feb 06, 2025
EPOMA:
Mine too is the same
We had this argument here some months ago. My 1.5HP is doing slightly above 2000W.
AutosRe: Burkina Faso Unveils Its First Locally Made Electric Car (picture) by adrusa: 11:38am On Jan 30, 2025
This same Chinese car that Innoson was also hawking as made in Nigeria? Propagandists are shameless!
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 4:02pm On Jan 24, 2025
brightk:
u de fear 2 call names young man
I don't think there is anything wrong in what he showed. Like he rightly said, maintaining good top and bottom balancing silmultaneously is quiet difficult. And by the time you are discharging your lithium battery below 3V, you are already looking for trouble.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 3:27pm On Jan 24, 2025
hayzhed:
An installer once told me that it better to use and external charge controller on an hybrid inverter with inbuilt charge controller. He claimed that it reduces the stress on the inverter. Please, how true is this claim?
I agree with him. In fact that is what I'm doing. It is all part of the principle of using your appliances well below the specifications with the aim of prolonging their lives.

No, I will not spend extra money to pay for expensive charge controller if I have a quality hybrid that I know can do the job. But for someone like me who started my solar journey long ago before hybrid inverters became popular, I found it more convenient and better for my equipment to continue to use my separate charge controllers rather than discarding or selling them off. My hybrid inverter has never been connected to solar panels and continues to stand by as backup if anything happens to my charge controllers.

The other reason why you may want to stick to a separate charge controller is if you have a large number of panels that may exceed your hybrid inverter's solar input. I have 10KW panels for example, and my hybrid inverter has about 110A MPPT which is less than the maximum I could get from my panels.

Also if your built-in Charge controller is PWM, it is better to get separate MPPT Controller.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 3:41pm On Jan 21, 2025
Anyone has a 48v power supply preferably in Ibadan?
Technology MarketRe: 2019 Core i9 Macbook Pro 16 Inch For Sale At 1.1m Today by adrusa: 7:45am On Jan 14, 2025
Solitechworld:
It is 2019 T2 MacBook pro, I made mistake with the post before.. how much are you expecting me to quote?
Quoting 1M for a 6 year old laptop? Some people wey dey buy Apple no get sense.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 10:50am On Jan 09, 2025
HeavenlyBang:
Washed mine, didn't seem to change much. Production improved and has dropped back again in the following weeks.

I'm just waiting for the rains at this point ngl.
Yes, production will drop off as the dusts accumulate again. But, I believe a good wash late December or early January should hold you up until rain starts.

I washed mine and my yield almost doubled.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 10:05am On Jan 09, 2025
Time to consider washing your panels guys.
PhonesRe: 4-year Battery Health Guarantee! Meet The Smartphone That's Changing The Game! by adrusa: 4:17am On Dec 23, 2024
Kdon2:
Phone wey no get name ba?☹️
It is a useless iTel phone. Just waka pass. UNISOC is the worst phone processor on earth.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 9:16am On Oct 26, 2024
ask4bk:
I just told you it's a SCIENTIFIC CONSENSUS in the area of lifepo4. Use your Google and search on life experiences of long time users of lifepo4 charging at high voltage like 14.6v.
Don't take my silly words. Go do your research and maybe come back to tell me thank you for opening your mind.

You are free to keep charging at 14.6v or even 15v if you want. Shey you need full battery. You'll get it.
You are right. Lithium based battery chemistries last longer if they are not always getting maximum charge. That is why it is suggested that the best way to protect your laptop and phone batteries is not to charge them beyond 80% or thereabout. Full charges stress lithium batteries.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 4:25am On Oct 25, 2024
FEGEITOK:
Good to know.

What hasn't been settled is the longevity of the lower tier panels.

I'd stick to the top tier
Any available statistics for review? In terms of longevity?
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 4:24am On Oct 25, 2024
Ferdiwar:
Based on personal experience, I'll say yes, inverter ACs are worth the extra bucks.

I have 3 inverter ACs (2x TCL 1HP and 1x Haier Thermocool 1HP) which are always on the lowest inverter model and consumes max 1.2kw/h.

When not on inverter mode the figure is over 2.4kw/h.
What I have heard is that the inverter ACs are not as good in terms of cooling.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 4:14am On Oct 25, 2024
HeavenlyBang:
Space? Cables?
Space is possibly the only thing that will make me think of "more efficient" panels. But, I don't think that the markup on the so-called "top tier" is worth the presumed increase in yield. I will like to see a more scientific comparison of the panels beyond the instantaneous yields of above 100%. I will want to see more long-term performance comparison.

One major problem with measuring efficiency in our setup is that what we get is mostly dependent on our needs, not the efficiency of our panels. On many good days, my batteries are full by mid-day or slightly after. So, my yields can never be a good measure of the performance of my panels.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 8:53pm On Oct 24, 2024
FEGEITOK:
This is why we say buy top tier panels.

On a good day when the stars align you will smile
The argument between top tier solar panels and the lower tier ones is not settled. Some people are of the opinion that what you get per naira is what is most important. If a 300W low tier panel gives me only 70% yield, but costs me only 50% of what I will pay for a top tier 300W panel, isn't the maths already leveling up?
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 2:31am On Oct 24, 2024
mank1234:
Wrong assumptions. Men have tested and showed that clamp meter, bms and CC are in agreement and that 100% has been exceeded many times.

On many occasions, in many places in Nigeria, on a clear day, insolation is usually in excess of 1000w/m2.
1000W/m2 is not the maximum solar insolation you can get but just the test condition in the lab.
It is simple really. The ratings on the panels were measured under certain conditions which are listed. If those conditions are EXCEEDED, the measured wattage will go up and exceed the label ratings. It is science. I had also briefly seen my yield exceeding the label. And my panels are even 2nd tier Flame solar panels.

However, it is also important to recognize that many charge controllers tend to show higher yield than the actual yield. I don't know whether this is a limitation of the measuring equipment or deliberate fraud.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 3:55am On Oct 19, 2024
bassdow:
A MOSFET is a transistor, and not a circuit board. That He displayed a circuit board with 1 or more MOSFET on it, doesn't make the entire board a MOSFET.

A MOSFET is small enough it can fit into your nose.

Now that circuit board might cost upwards of 8,000 naira whereas a MOSFET (small or big) costs like 1,500 naira or even 1,000 naira and below.

Why Am I even talking sef. When a lot of Nigerians computer engineers are good at changing motherBoards, rather than fixing actual issue.
You missed the point. There are mosfets on the boards he was holding. You claimed he wasn't holding mosfets, but right on the boards he held are several mosfets. And there is nothing wrong with replacing these boards instead of wasting valuable time and money chasing individual components on the board. In fact, modern circuit designs are made modular for easy repairability.

You may like the hard way, chasing resistors and capacitors around on a board, but many electronics are now better repaired by simply replacing boards. It is the modern way and creates opportunity for quick turn around and reduced downtime. While you are soldering up and down, doing trial and error with capacitors, a card would have been replaced and the client will be back in business.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 5:13pm On Oct 18, 2024
bassdow:
But those things you display ain't MOSFETs na ? MOSFET is a transistor BUT you display a circuit panel ?
If I have to change an entire circuit panel, just to fix a faulty sound IC, then it would be very wrong of Me saying I changed the IC .

Those circuit panels you hold are several costs above the cost of a MOSFET.

Yea I know in this part of the world, most of us have difficulty changing a spider IC, even the normal IC sef, you still need look hard to find them.
Actually, there are mosfets on some of the boards he displayed.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 5:04pm On Oct 18, 2024
azeu73:
To the bosses in the house,
Pls what could lead to the cause of a blank screen on my Charge controller display screen, It all started yesterday.
The batteries are charging alright, as the charge light indicator is ON.
But I can't just understand why the blank screen.
If you are handy, bring it down and open it. Then fiddle with the display connection (unplug it and plug it back, clean it if you see dusts) and be sure that it is seating well. If that does not solve the problem, the chances are that you have a broken display that needs to be replaced.
Technology MarketRe: For Sale: 60 Inch Lg Full Hd Tv (60pn6500) by adrusa: 4:44am On Oct 13, 2024
OYEDIPE:
It is a Plasma TV. Be open
AKA Outdated TV system. 100k will be too much.
Technology MarketRe: -- by adrusa: 7:21pm On Oct 07, 2024
easyyoke:
Where in Ibadan are you getting Fiber and what ISP?
https://www.smartciti.com.ng/
Technology MarketRe: -- by adrusa: 6:17am On Oct 07, 2024
gXtra:
At this price, if I chat you on whatsapp na to come exchange one or two curses grin
Really? For a 2-year old phone that can not make call? Happy sale Sir.
Technology MarketRe: -- by adrusa: 7:13pm On Oct 06, 2024
gXtra:
Maybe
But let me tell you something
Most starlink users have no option than to pay the new fee and cry in peace grin
Because they've tasted good life and don't want to go back to these shitty networks
Hopefully, but there are equally good, and cheaper fiber options. I use fiber in my own house and I can get something comparable to startlink for less than 50k without FUP, and that is in Ibadan. Lagos should even be better. I understand that people in remote locations may need starlink. I can imagine a few locations in Oyo State where I myself may be forced to cough out the money for starlink.
Technology MarketRe: -- by adrusa: 2:48am On Oct 06, 2024
At 70k per month for subscription, used Starlink are about to flood the market.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 8:24pm On Oct 03, 2024
On AC vs DC in solar setup

I have seen a lot of argument about bypassing inverters and using the DC that comes from your battery directly. The argument is that it is efficient since it bypasses the inverter consumption and the loss due to the back and forth conversion.

The problem with this argument is that it is not novel. In fact AC and DC competed for approval when electricity transmission was to start. AC won for many reasons. Anyone interested in the AC vs DC drama between Thomas Edison and Nikola Tesla can read it up online.

The best situation with bypassing the inverter is if your appliances are in the voltage of your battery. That way, there will be no need for any kind of conversion and there will be no loss. In fact this is why a lot of DC appliances were 12V and why most early solar setups were in 12 volts. But 12V is inefficient for high wattage appliances because you end up with high current. The cost of cable to handle such current outweighs potential savings. Moving AC from 110 or 220V to 12V also create greater losses. That is how higher voltage equipment became popular.

So, unless you are using appliances that are in the voltage of your batteries, you still end up doing conversion. AC to DC conversion and DC to DC conversions both results in loss of efficiency. So, the idea that powering your equipment with DC is somehow better and more efficient than AC is not a universal truth. Your mileage will vary based on the efficiency of your conversion. With some inverters doing better than 95% efficiency, the argument for any kind of DC-DC conversion becomes difficult to sustain.

In addition, DC suffers from the indignity of voltage drop over some distance. From my power house to my server room (about 12m), my 14V source drops to about 11V. In the days of Lead Acid battery when the battery voltage itself can drop to below 12V, my 12V routers used to shut down or become erratic due to voltage drop. I know I could have mitigated the drop with a thick wire, but that will be costlier than buying a sachet inverter to power my routers. So, if you have a normal sized house, DC is not going to serve you well unless you are going to put buck converters in every corner of your house which will increase your costs and increase power loss due to conversion at multiple points.

Ultimately, inverters provide better solution than messing around with DC-DC conversion and messing with your electronics.

This is not to say that there is no place for using DC in some situations. A few of my gadgets that are in the power room are powered directly with DC from the batteries. My system is 48V so, I got some 12v and 5v step down to power some load including a router. The advantage of that is that if your inverter goes down for any reason, you may still have access to your network for troubleshooting.

One time I travelled and my inverter went into protection mode. My people panicked and called me. Because of the things powered directly from the battery including the sachet inverter in the server room, I was able to reach my system, saw that it was the inverter and asked them to restart it.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 6:06am On Oct 02, 2024
dollarnaira:
Dont play the victim card here kid.
What you did was worst than a rebuttal.
Who attacked you when you flash devices to get more settings? Am I here to sell things to you? Will you pay me if I eventually fail in my experiment? Really disappointed in you@ adrusa. If certain things are beyond your comprehension please click the red botton. I can see that you are fully intelligent not to distinguish a diy and marketer. Stay off my post pls nairaland mod. If you detest my choice cable for my pv, how is that your problem? And I hope you can clear the last low bar in this piece? Grow up @adrusa.
I guess calling people "kids" is your favourite insult. Says more about you than the people you are trying to insult.

Ethernet cables are specced to carry signals and very little current. To turn it into something to use for PV installation is playing with fire. Unfortunately, the day your childish experiment fails, you will be too ashamed to tell us here. Enjoy, adult. grin
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 5:19am On Oct 02, 2024
bassdow:
I kukuma no come here hustle clients though I sometimes get clients (a few big ones) BUT when in here, na to respond to questions, and sometimes share ideas. Had everyOne relied only on what's existing, I doubt there ever would have been any new inventions.

See Oga @adrusa , even God no fit follow me argue certain things. Recently had a bank manager who paid me a visit - him wan give us contract (just so you know, I'm software developer, and a server administrator full time. Solar and few other things na hobbyist pet project) BUT insisted on knowing where I reside.

As Oga come, I took him to my home office space and the man was surprised at the many irregular things He saw including the fact my Laptop PC is hung on the wall.

I even have an external Tv antenna inside the room. When he asked why said antenna ain't outdoors, I told him I modified it to act as booster and for some reasons, preferred it staying inside.

On top table, Oga only saw external keyboard and mouse + my 32-inch LED Tv-Monitor (still working then). He didn't ask me where the PC was but was looking for it until I showed him by point at what's on the wall. it's then He saw the blinking light.

wetin come give me extra work na when I tell am say all these including the Fan and the big 32-inch Tv-Monitor all run off a single 12-volts 150AH battery which is very close by. oga refused to believe. Equally told him it can run for 3-straight days without reCharging. Have done the test (when the chargeController was moved elsewhere) so I'm sure. And mind you, the battery gan sef na Tokunbo I buy am.

What further WOWed him was when I informed him the setUp doesn't require an inverter and Oga said na lie so gave him a brief class. All the while, i wasn't trying to sell him anything.
A lot of us spend time trying to sell to people we end up loosing them. me na freeStyle. I'm happy being all chatty and a lot of times, they get really interested. rarely do I do thins just to make a sale.

I have a much larger solar array hence whenever I upgrade, I mostly relegate the weak but strong batteries elsewhere. Before me go sell battery as condem, e no go fit hold charge for 5-minutes. Even at that, I fit still use am as stepDown.

At end of the day, the big man use style calm down. few weeks later, na me dey him place dey do something similar for him. As for the actual reason he paid me a visit, that one is currently being discussed as Oga first jump do Solar.

Guess what, they already have professional Solar installers who handled his house project. Even said He's got contact of those that handles those at his place of work (bank) YET na me him give work. Guess why, it's because I was able to offer something much different.

A lot of una mostly have single source of income hence always and often under pressure to make a sale. Let me ignore the fact a lot of una no even cool down learn work finish.

Imagine 2 landLords - 1 has got other sources of inCome while the other one's only source of inCome is the building. Una experience go really vary
For you information, I don't sell anything, just a user who is a bit hands-on. The only things I have ever sold to people are my decommissioned equipment.

However, if you are okay with burning down your house down because you are trying to save some few naira, that is up to you. I'm just trying to advise others to be careful. It is not everyone that have the means to burn two laptops for meaningless experiments. There is nothing you have described here that have not being accomplished in safer ways. If you want to use DC for your TV, buy a DC TV!

Hopefully the only person you endanger is yourself, not your wife and kids.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 1:36am On Oct 02, 2024
dollarnaira:
grin grin grin grin grin grin grin grin grin grin grin grin grin grin grin grin grin grin grin grin. This shows you are a kid. Good morning.
Yah! No better rebuttal than insults. grin

I know it takes a little intellect to put together a sensible, non-insulting rebuttal. But, I'm not surprised that you could not clear even that low bar.
Satellite TV TechnologyRe: Solar Energy, A Complement To FTA by adrusa: 12:34am On Oct 02, 2024
People in the house, please read carefully. No follow the advise of @dollarnaira and @bassdow too seriously o.

1. The fact that something "works" does not mean that it is working well. Properly tested and certified electronics sometimes misbehave and burn houses, talk less of things carelessly joined together.

2. Anyone who follows the news will remember the implosion of the Titan submersible many months ago. Five people lost their lives because one foolish man believes his hunch and refused standard testing and certification.

3. I'm a hard core hobbyist and DIY guy myself. I'm a medic, but some think that I'm an engineer, but I understand limits and take precautions.

4. So, please be careful out there. Follow rules and guidelines as much as possible. Those rules and guidelines are borne out of rigorous testing and years of observations with some safety margins built into them.

5. Like they say, things that move around carefully dies, not to talk of the ones that move about carelessly. Mistakes happen. If you stay within the rules, the damages are likely to be less than if you are outside them with untested, unvetted dangerous experimental setup.
TravelRe: African Woman Cries At Dubai Airport because of Racial Profiling. (video) by adrusa: 10:31pm On Oct 01, 2024
etrouble:
If we fight everybody who does not believe in our opinions, then one day, we will fight ourselves because sometimes we too do not believe in ourselves for some reasons
You are supporting an unrepentant scammer. See, he has run away and deleted his account. He will set up a new one and continue to scam innocent, kind hearted mumus.

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