Carbon2010
Newly Enlightened
- Joined
- Nov 4, 2009
- Messages
- 51
Some ideas I have been trying to sort through.
I'm looking to construct a small solar light for when we go camping. As much spread as possible. I have selected a few components already - more so because it's what I have on hand.
-12v 2W solar panel (used to trickle charge a car battery- 2 available)
-2 3W cool white Luxdrive crees.
-(1)Source of power
-Lm317 chipset for current regulation
-Various resistors/case/wire/Ect.
(1) I have a few options here. I'm looking for something reasonably bright but with at least 6 hours run time. Options are:
-3 hybrid NiMH 9V batteries
-1 3.6V 4500MaH NiMA battery pack (gutted from an old box)
-Your personal recommendations
Now if you guys can give me an idea on how to go about this that would be great. The basic idea I have now is the panel is fed into a simple current regulation circuit using the LM317. Using C10 i'll select the correct resistor, although this doesn't take care of overcharging, just regulation (I think - please let me know otherwise)
The LEDS simply attach to the Power option I choose. Panels charge the battery - Leds use the power.
If anyone has a better idea PLEASE post it up. I would love the feedback.
Thank you!
I'm looking to construct a small solar light for when we go camping. As much spread as possible. I have selected a few components already - more so because it's what I have on hand.
-12v 2W solar panel (used to trickle charge a car battery- 2 available)
-2 3W cool white Luxdrive crees.
-(1)Source of power
-Lm317 chipset for current regulation
-Various resistors/case/wire/Ect.
(1) I have a few options here. I'm looking for something reasonably bright but with at least 6 hours run time. Options are:
-3 hybrid NiMH 9V batteries
-1 3.6V 4500MaH NiMA battery pack (gutted from an old box)
-Your personal recommendations
Now if you guys can give me an idea on how to go about this that would be great. The basic idea I have now is the panel is fed into a simple current regulation circuit using the LM317. Using C10 i'll select the correct resistor, although this doesn't take care of overcharging, just regulation (I think - please let me know otherwise)
The LEDS simply attach to the Power option I choose. Panels charge the battery - Leds use the power.
If anyone has a better idea PLEASE post it up. I would love the feedback.
Thank you!