Hi All,
I need to create a solar powered Wireless Access Point and IP camera - but I'm having problems calculating the consumption vs. battery size vs. panel size - can anyone steer me??
Here's the scenario: I'm a member of a not-for-profit sporting club, and we're being hindered by vandals at our club house and field (mostly at night). There's no power available as its slightly remote, however there is a location I can get a wireless IP link to - that's the easy bit.
I have some limited electronics know-how, however this one is a little different from what I'm used to!
Here's where I'm at so far:
- The AP consumes 2A at 5VDC
- The Ir capable IP Camera also consumes 2A at 5VDC
I had planned for:
- A runtime of around 20 hours (Am I asking too much?)
- Budgeted for a 38Ah 12V Yuasa battery
I'm stuck at:
- A circuit diagram for an efficient 12V->5V power supply capable of at least 5A
- What spec solar panel should I look at? What kind of cheap solar regulator?
- How to calculate the base run-time on the above figures?
The solar panel will be mounted on a flat roof, but I can rig up a support to hold it at an angle to provide it with the longest duration of direct sun.
Obviously as an NFP budget is not our friend, so I'm happy to build\beg\borrow wherever I need to.
I'd *really* appreciate anyones time in pointing me towards the correct values and formulae.
Many thanks, Tim