Cozzer
Established Member
Some Enid Blyton/Noddy style help required here please - sorry!
I decided that my shed could do with some lighting, so had the bright idea of setting up some solar powered stuff.
I'll give you as many numerical details as I can find, but don't let it fool you that I actually understand any of it!
I bought a 25w panel. There's other spec listed on the back of it - ask if you like.
I bought a length of 12v 5730 SMD LED Strip, and also bought a bog-standard (30amp?)"PWM controller", available for £ mid-teens anywhere. State of the art it will not be...
It has an LED display, a few buttons to access a menu, and a user guide that I think - think - I've eventually figured out.
You end up with + and - cables from panel to controller, ditto from controller to 12v battery, and ditto again to the lights (aka "the load")
(Even I figured that out...so far, so good!)
The controller menu gives various bits of info, courtesy of button pressing.
The first (and main) display shows whether the panel is charging the battery, and apparently also shows the present voltage of the battery.
The next screen shows the "float voltage", which in my ignorance is the figure that you wish the battery voltage to "stay at" (?).
The next two settings are for discharge stop and discharge reconnect. In my Noddy language, if the battery gets drained down to a certain level, it'll stop powering the lights, and only allow them to work again once a(nother) certain level is reached courtesy of the panel upping the power in the battery. (Again, ?)
Going back to the main display, the graphics show the panel, the battery and a light bulb.
Courtesy of another button press, the load symbol can be removed.
Yes, it works. It's not brilliant, but it works. You can just-about read labels of stuff on the shelving, and you won't stub your toes on something on the floor that you'd forgotten about.
It's better than being in the dark...
I've just nipped in to the shed to make a note of controller settings. Even though it's a bit gloomy and dull this morning, the display shows that the panel is indeed charging the battery, and states the battery is at 12.5v. Scrolling through, the float is set at 13.7v, with the cut-off and reconnect values being 11 and 12.6. The bulb/load symbol is showing, and the LED strip is working.
Now here's the bit I don't get... if I scroll through and turn the load symbol off, the LEDs brighten up considerably....I'm not saying it's like a 60w bulb in the house, but significantly brighter than when the load symbol is on!
Why?
What am I not grasping?!
I decided that my shed could do with some lighting, so had the bright idea of setting up some solar powered stuff.
I'll give you as many numerical details as I can find, but don't let it fool you that I actually understand any of it!
I bought a 25w panel. There's other spec listed on the back of it - ask if you like.
I bought a length of 12v 5730 SMD LED Strip, and also bought a bog-standard (30amp?)"PWM controller", available for £ mid-teens anywhere. State of the art it will not be...
It has an LED display, a few buttons to access a menu, and a user guide that I think - think - I've eventually figured out.
You end up with + and - cables from panel to controller, ditto from controller to 12v battery, and ditto again to the lights (aka "the load")
(Even I figured that out...so far, so good!)
The controller menu gives various bits of info, courtesy of button pressing.
The first (and main) display shows whether the panel is charging the battery, and apparently also shows the present voltage of the battery.
The next screen shows the "float voltage", which in my ignorance is the figure that you wish the battery voltage to "stay at" (?).
The next two settings are for discharge stop and discharge reconnect. In my Noddy language, if the battery gets drained down to a certain level, it'll stop powering the lights, and only allow them to work again once a(nother) certain level is reached courtesy of the panel upping the power in the battery. (Again, ?)
Going back to the main display, the graphics show the panel, the battery and a light bulb.
Courtesy of another button press, the load symbol can be removed.
Yes, it works. It's not brilliant, but it works. You can just-about read labels of stuff on the shelving, and you won't stub your toes on something on the floor that you'd forgotten about.
It's better than being in the dark...
I've just nipped in to the shed to make a note of controller settings. Even though it's a bit gloomy and dull this morning, the display shows that the panel is indeed charging the battery, and states the battery is at 12.5v. Scrolling through, the float is set at 13.7v, with the cut-off and reconnect values being 11 and 12.6. The bulb/load symbol is showing, and the LED strip is working.
Now here's the bit I don't get... if I scroll through and turn the load symbol off, the LEDs brighten up considerably....I'm not saying it's like a 60w bulb in the house, but significantly brighter than when the load symbol is on!
Why?
What am I not grasping?!