SteamyTea

Traders may not see it that way, they could capitalise on the the public's ignorance. I see to remember that happened after 'D' Day. 240 old pence to the pound was rounded to 100 new pence to the pound. I know of a warehouse

Well yes, that is what they are for. But you can loose the output, or a high proportion of the output, for very little shading. I installed a small, off grid, system. When I went back to look at it a few weeks later because it 'had stopped charging the battery', I found a few dockleafs had shaded a corner. What was really interesting though, was just how hot that module had got, way too hot to put your hand on, so over 70°C. One of the problems of shading is that users are used to it. This is mainly because the shading has always been there, so they do not know what the system could produce. The upside is that we have a lot of overcast days in the UK, so on these sort of days, less, or no shadow is cast.

Even with optimisers you still get a hit that is out of proportion to the optimal. I think we have done this conversation before.

How badly shaded is it? It only takes a small bit of shading to have a huge impact on performance. Does your inverter/inverters have the ability to log long term performance data, text files are best as that can be easily manipulated in a spreadsheet.

I have downloaded and installed Andoid Studio, that seems to have SDK in it. That makes sense, but how to I add in things like the camera, GPS and then, and this is probably the easy bit, make some code to do what I want it to do.

Right at the very beginning. I tried an online development package, got as far as giving it a title, then I could find nothing. All it seemed to want to do was make a pretty GUI. Is Android SDK a program that runs in Windows? Never done any work in Java, I struggle with a bit of Python to be honest.

I want to make, what I think should be a simple app for my phone. All I want it to do is take a picture every time I move a set distance, store the picture and attach the appropriate location to it. How does one go about this. I have looked at a few tutorials, but I think I am missing something very basic. It would be nice if I could 'do the work' on my PC, rather than fiddle on the phone. Anyone done this?

I want one, then I can fly down the A30 and get rid of cars, the ones that block off the outside lane leaving half a mile of free space in front of them.

It is because most customers consider painting a minimum wage job that is one step up from drinking meths on the street.

Is it bollocks. I have 50m2 on two layers, I live alone, and it is still cramped. Trouble with small places is you can't really have a half size cooker, fridge, washing machine, bin, staircase, sofa, table bath, shower, bog, bed, wardrobe, light fittings. It is about time the country, and its planning committees, moved on and encouraged larger places. There is no problem with land area, we have only put housing on about 2% of it, that is less than a quarter of all urbanisation. It is about time we shifted our old viewpoint of 'start at the bottom and move up, not serving us very well as a nation.

My favourite plane, along with the A10. They both looked like they meant business.

Is Dougie short for Douglas? Douglas was the co-pilot in Cabin Pressure. https://www.bbc.co.uk/programmes/b00lmcxj This is totally off topic, sorry.

I suspect it will. We had a crazy night at work last night, completely caught us out. And we are a few miles from Newquay, but a few of the customers looked like they had planned to go there. Tonight may be worse. Except it is already raining. Never go to Cornwall in August, it is very wet.

Did someone put up a link to some polyurethane resin that is for roofs. It may have been been for repairs, but could see no reason why it could not be used with glass fibre mat. May ve to use a powder bound mat rather and a emulsion one. Less itching from powder bound, but messier to use.

During my two years of painting and decorating, I learnt to do what he says. Wish I had seen this 20 years ago. Gloss rollers are the dog's.

Sounds like Cornwall, which is going to be quiet now Boardmasters has been cancelled. There is going to be so much gear dumped on the local market.

Can you tell my council that, they seem to have dropped the 'a week' bit, but have a sign saying it is to conserve wild life.

Welcome. A few years back now I had a lodger who had a stroke. While she could walk reasonably well, the foot dragging was a problem, she could easily trip up. So any door thresholds need to be eliminated. She had no real use of her right arm, and limited use of the left one. This caused problems with things like taps and controls on things like cookers. Also made door locking difficult. For a laugh one day, I tried to do everything just using my left hand. Gave up after 20 minutes as I could not roll a fag. Oh, and depending on which side is more able, if there is a difference, then the bog roll holder position can make a huge difference. Try and design everything so it can be accessed easily from both sides. And doors that can slide both ways are much better than normal fixed hinges doors, eventhough they are horribly noisy.

Whoops, it was late. I got G wrong, had it as 9.18. That should be OK then. I seem to remember putting something quite light onto some polystyrene and it sunk into it, pay have been EXP though.

If you know the material the element is made from, and the mass, you can work out how fast it will heat up for a given energy input. That may seem an odd way to calculate it, and you need to take thermal losses from the surround fluid into account, but should work. Alternatively, get an element stick it in a bucket of water, and do some timed test (my preferred method), then model from the data.

Mass [kg] is the amount of stuff in a material, it is not the weight that is affected by gravity. Force is mass times acceleration. The unit is the newton [N] Area [m2] is what it is, the length times the width, or pi.r2 or the integral of a curve, which is just the area under a line on a chart. So taking a mass of 1 kg, and acted on by Earth gravity, 9.81 m.s-2 over an area of 1 m2 1 [kg] X 9.81 [m.s-2] / l [m2] = 9.81 N/m2 So the 400 kg window sitting on a strip 4.2 m long and 0.1 m wide: 400 [kg] X 9.81 [m.s-2] / (4.2 [m] X 0.1 [m]) = 8743 N/m2 8743 [N/m2] /1000 = 8.743 kN/m2 N/m2 is often written as N.m-2 and is a pressure, in derived SI units, pressure is also known as a pascal [Pa]. 1 N.m-2 = 1 Pa With a bit more arithmetic trickery, it can also be expressed as 1 J.m-3 which is energy density. For more about the pascal: https://en.wikipedia.org/wiki/Pascal_(unit) Usual disclaimer, it is late and I have had another record breaking night feeding people. Is EPS a true solid, or can it flow over time as the air inside it is compressible?

Just done a quick calculation of my space heating as a percentage of all my energy usage. Space heating, for the year 2018 was 35% of my total usage. Total usage was 3,786 kWh for the year. 78% of my total usage was on E7.

I may have to get a few SSRs to play with. All I really want to do is switch my storage heaters on at different times, depending on the expected outside temperature. Just glorifying what I already do with my extra timers.

This is something I would like to know more about. It really should not be hard to design something that only the owner has access to. 30+ years ago, I was chatting to an software engineer and he said there was a system/protocol for making sure that software did what you wanted, without surprises. Seems something like that is needed now, any idea what he was on about (he was Belfast Irish, so he may have said something very different).

I must have about a 1000 of them in my chips box! really useful little bugger. Is it worth getting some so that I can connect my collection of RPi's to other things like an SSR. I have, so far, shied away from playing with 230V stuff. It does not scare me, just that I have not wanted to smoke any of my Pi's.