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  1. R

    How Do Solar Panels Behave?

    The BMS is a "battery management system". It monitors the voltage of each cell and balances them. It also allows the charging and/or discharge current to pass through its mosfets, and can disconnect that current when voltage is too high or too low or if a single cell is too far out of balance...
  2. R

    How Do Solar Panels Behave?

    Thanks for the reply! Can you say why you would not mess with the voltage from cell one? Do you think that I will be able to accurately measure amps using a shunt and arduino? I can adjust all the charge settings on the charge controller and BMS, so I will be aiming for a reduced charge...
  3. R

    How Do Solar Panels Behave?

    I think I found a better way to give the ON/OFF state signal to the arduino. There is a remote momentary switch that connects to the inverter using a RJ11 connection and a push button momentary switch. The cable has 4 wires, Black: gives constant 24V output Red: sensor to detect momentary...
  4. R

    How Do Solar Panels Behave?

    I'm also facing a bit of a challenge in how I will turn off my inverter when the battery voltage is low. Because I am using LiFePo4 batteries, and because I also want to extend the lifespan of these batteries as much as possible, I would like to have control over the voltage at which the...
  5. R

    How Do Solar Panels Behave?

    So I hit a bit of a snag in my plan. I had intended the charge controller to switch dump load on to divert extra energy to heat water when batteries are full. Turns out that the Victron charge controller that I spent a lot of money on doesn't have this feature(even though it's common on all...
  6. R

    How to put solar panels on top of my RV

    I took a course relating to this sort of thing a few months ago. The topic was "Dynamics of Machines". You can break this problem down and get to the solution, using techniques that have been developed. Here's a course a found online that will certainly have the technique in it somewhere, I...
  7. R

    How Do Solar Panels Behave?

    We've already got the panels in place. They are sitting facing southwest about 20 degrees west of true south as that was the best angle we could get. They are also tilted to about 30 degrees off horizontal, which was just the angle of the roof we mounted to. Maybe not perfect but should work...
  8. R

    How to put solar panels on top of my RV

    At optimal angle to horizontal, for your latitude and time of year, there is a single angle if you do not have the lazy susan. The sun should move through a plane at perpendicular to the plane of the panel. The sun should pass through a point normal to the panel at high noon. With the panel...
  9. R

    How Do Solar Panels Behave?

    Yes I agree. Not having a clear goal, budget, or understanding of motivation does make this challenging. I am going to propose that the system be capable of providing 100W power 24/7 under 90% of weather conditions. That is a clear mathematical goal that i can design for.
  10. R

    How Do Solar Panels Behave?

    So I am breaking this project into three phases: Phase 1: spec and buy all the parts of a typical solar installation Phase 2: Install, debug, test etc. the solar panels. Have the system up and functioning as a source of power Phase 3: Purchase a water heater tank. Modify it...
  11. R

    How Do Solar Panels Behave?

    The idea of a heat exchanger and a pump is interesting. I will continue to look into that. It could mean not having to cut into the side of the water heater. It could also mean I can vary the rate of heat output from the tank by adjusting the water pump speed. My only concern with that...
  12. R

    How Do Solar Panels Behave?

    Thanks for all these replies. I think I am getting a pretty good idea of what I want to achieve. I like the idea of using an old water tank. If I can buy a used one in decent quality it may help save some money. I want the majority of the surface to be well insulated. I'm thinking lay the...
  13. R

    How Do Solar Panels Behave?

    It's not my chicken coop. It is my dad's. He wants to do something to help them keep warm. I don't think tangible results are his priority, as much as him satisfying his curiosity of solar panels, and knowing that he did something to spoil his prized chickens. Chickens don't actually need a...
  14. R

    How Do Solar Panels Behave?

    I'm at all expecting to keep the coop "warm". But hopefully can keep one small section of the coop above freezing temperature. My dad is the one who wants to have this project done, and he is convinced that it is worthwhile. He knows that it will not make the coop warm but only add a few...
  15. R

    How Do Solar Panels Behave?

    I have considered the water heating panels as well. For this project I want to focus on using only PV panels. The coop is not expected to be kept as warm as say a house, and I think it is likely that the liquid in the system will freeze(i'm in Canada). Antifreeze could be used, but I'd...
  16. R

    How Do Solar Panels Behave?

    There is a good reason for doing this. The batteries are very expensive. I need the heat at night. To store all that heat in batteries will cost over $1000 To store the heat in water will cost a small fraction of that(think of the water as a battery). But I still want to be able to turn on...
  17. R

    How Do Solar Panels Behave?

    Interesting. I imagine I would need to have a multitude of burners installed so that I can vary the resistance of the load to match the panel output. I am now thinking it would be better to draw the load from the battery and allow the controller to do all the MPPT stuff for me. My concern now...
  18. R

    How Do Solar Panels Behave?

    Hello, I am looking at using solar panels to accomplish two things: -I want to power a heating element submerged in a water tank to act as a thermal battery for heating a chicken coop -I want to also charge a relatively small 12V battery by connecting the panels to charge controller...
  19. R

    You guys are gonna think im either stupid or crazy

    tell us you idea, its not going to be stollen from you, its going to be proved wrong.
  20. R

    As easy as riding a bike

    heres an even odder one, why does a top not fall over when its spinning? as for that paragraph, it means that when the bike leans over to the left, the ground turns the front wheel left and causes the bike to turn left, this cause a change in momentum as the bike accelerates to the left...
  21. R

    Conservation of energy?

    would a metal spring get tired? no, is it exerting a force? yes. its not actually doing anything, so it isn't using energy. It has only potential energy, and it keeps it until released from the wall. Ok, say there was no friction at all, when the two ships snag the rope, and stop, where...
  22. R

    Philosophy: Should we eat meat?

    One thing i overlooked, i was not considering the living conditions of the animals, i was more thinking about the fate of the animal. It is wrong to have animals living in poor conditions, not because they are being eaten, but because while they are alive, they are unhappy. I see how it is...
  23. R

    Conservation of energy?

    yes i think i am confused with what force, kinetic energy, momentum, and energy are. i sometimes use them interchangably. but there is still a problem that i will try and outline. a force pushing left will cancel out a force pushing right, so there will be no energy used. I was using the...
  24. R

    What is Magnetism

    What are magnets, how do they form, how do they attract and repel?
  25. R

    Conservation of energy?

    actually the energy is used in stopping the cars, one car exerts a force on the other car with enough force to stop the car, and vise versa, so each take the other cars energy to change their momentum. That makes perfect sense to me, but then what happened to the momentum? momentum is...
  26. R

    Conservation of energy?

    i might be wrong but i think i have thought of another place the energy might go. back to the car slowing down 5km, its tires exert a force on the ground, pushing whatever is under it in the same direction of its movement, so the slight momentum of the car could be transferred to the momentum...
  27. R

    Philosophy: Should we eat meat?

    what is it that the average vegitarian sees wrong eating meat? is it the killing or suffering caused to the living animal? Or, is it the consumption of the flesh of an animal that they don't like?(OR BOTH) the killing is justified, it is for neutrients, for food, life. It is a natural way to...
  28. R

    Energy pathways within the mind

    it doesn't look like random noise, it looks more like a fractal image, that a computer might have created. i have never heard reference to this anywhere before, but i find it usefull in understanding how the brain works, its as if i can see an ever changing display of light, its beautiful, i...
  29. R

    Energy pathways within the mind

    im wondering what these images i see are. When i close my eyes and gently push the palmes of my hand into my eyes, after about 30 seconds, i start seeing swirling lights and strings and squares, and detailed contantly shifting shapes that i can't possibly describe accuratly. It is...
  30. R

    Prove that the earth goes around the sun

    how can you say that the Earth doesn't go around the sun? the sun is as we have mathematically proven much much larger than the earth, and has a far greater mass. so if you believe gravity is directly a result of the presence of mass, and larger massed objects have greater gravitational pulls...
  31. R

    Real life examples

    well there's the fact that I am sitting here, and I am being pushed downwards by some strange force called gravity, but then again nobody really knows what gravity is, so then that's not much of an example
  32. R

    Philosophy of zero

    i haven't read anything, but to me, zero is nothing.
  33. R

    Chess tournament

    how do i register? Mabye I already am, but I can't remember
  34. R

    Juggling things

    I first attempted to juggle little apples that grew on a tree just down the street when i was 10ish. It took about a year before i actually could juggle, and I learned by juggling whatever little things i could find(rocks, potatos, apples, oranges, whatever else). I only know how to juggle...
  35. R

    Damn computer iq tests

    Sorry, I was wrong, I wasn't reading the question right. So now I have changed my answer to A),. hey, anyone know where a good IQ test is, I've looked around the net and my scores have been really inconsistent.
  36. R

    Kinetic energy

    I don't see why this would be so. 60²=3600>120=30x4 so what you said makes no sence,cause the numbers don't add up.
  37. R

    Time Cube

    He claims that he will give $1000 to any individual that can prove his theory wrong. But what is his theory? That you can divide things up by 4? And if we don't teach this to everyone in school, our human race is doomed for exstinction? lol, really that is just retarded. He also says that...
  38. R

    Damn computer iq tests

    I still think that the answer is c. Can you tell me where this IQ test was and I'll take to see who's the smartest. The ONLY reason the monkey would change in weight is because he would be farther away from the source of gravity, so he/she(the monkey) would weigh slightly less.
  39. R

    Kinetic energy

    I believe you are overcomplicating what was probably meant as a simple problem, as well as missing a key point. Look at it this way: The car is device for transforming chemical energy into kinetic energy (with a certain efficiency). We are told that 1 ounce of fuel can be transformed into the KE...
  40. R

    What Do You Do If ?

    Assuming that a beer soaked in ear wax would have the same effect as the pint of ale I would allow the wax to drip in my beer. What do you do if, upon the wax dripping into the full beer, the rightful owner of the beverage asks for his drink back, unaware of the ear wax in it?
  41. R

    Damn computer iq tests

    oh, I see what the question is asking. When the monkey first starts to climb up, he will weigh more, after the monkey stops accelerating his weight will return to normal. So there will be a moment when the monkey weighs a little more. If the monkey decides to stop climbing the rope, then he...
  42. R

    Why do men have nipples?

    I have heard that women who take steroids(male hormones), will grow a beard and moustache. With enough use there clitoris will begin to form into a small penis(oh god no!) If your a male, and you take birth control pills(female hormones), you will begin to develope breast and other female...
  43. R

    What Do You Do If ?

    I would remain un-satisfied with the answer, to avoid having to clean the ear wax off the glass when I'm done. What do you do if you change your mind, and decide you would rather have a sense of satisfaction, but cannot remember where you left your earwax?
  44. R

    Proof that gravity exists?

    Given what I typed above, it would be impossible to shield grvaity. If you believe in the existence of a graviton, then it is possible that mabye you could shield, or redirect this flow.
  45. R

    Damn computer iq tests

    The weight of the monkey will not change(because he dosn't gain mass), so the rope will pull down on the pully with the same strength. The direction that the rope is pulling will not change. So the C is the correct answer.
  46. R

    Why call it alive ?

    Is there a distinct difference between something that is alive, and something that is conscious? Should there be? Would a machine that has the ability to reproduce be considered alive? If not, then why would we be considered alive? I don't think there can be an accurate discription of...
  47. R

    Kinetic energy

    If the truck were in a frictionless world, and the engine of the truck had the same HP at all rpm's, then the energy needed to accelerate 30mp/h would be the same at all speeds. hmmmmm... The rpm's would increase as the truck gained speed, so the amount of fuel used would be greater each...
  48. R

    Proof that gravity exists?

    The effects of gravity are similar to the effects of accelleration. If an object is falling , it will feel no acceleration. You could imagine that if Earth were flat and were constantly accelerating, you would feel the same effect as gravity. I personaly don't believe in the existence of...
  49. R

    Violate the momentum law?

    The momentum of an object is equal to its mass, multiplied by its velocity. The bowling ball will obviously be much heavier than the golf ball, so it will not have as great of a speed, yet because of its mass, would still have about the same momentum. A golf ball would probably bounce back when...
  50. R

    What Do You Do If ?

    I ask him if he can tell me how his hurdy gurdy works in the form of a sad song. what do you do if while listening to his sad song about his hurdy gurdy you suddenly realize that you don't have any spare diesel fuel and in a violent rage his monkey attempts to attack you with his pegleg?
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