I believe Nano M2's are ~6W. The data sheet lists it as 5.5W, ubnt is usually pretty accurate on power consumption for sizing off-grid systems in my experience.

I recommend checking out http://wndw.net/ for guidance on sizing the power system if you're looking for more info. Even if you're shooting for 20hrs/day of uptime, it's *generally* better to size for at least 2 days of uptime w/o sunlight (effective hours of sunlight; cloudy and foggy days are effectively zero sunlight days). The bay area is pretty easy 'cause we have good weather but if you want 90% uptime for the year (which is low, in practice) you'll want at least a day of backup. 

Also consider getting a timer of some sort to shut the device off if you don't need it active at night! That will really save on your power budget.

On Sun, Apr 1, 2018 at 9:01 PM, Max Schwartz <maxschwartziv@gmail.com> wrote:

I'm putting together a solar wi-fi repeater for peoplesopen.  Does anyone have a number for average power consumption for the Ubiquiti NanoStaton loco M2?  Know of any cheaper/better components?

Item	Cost	Specs
Battery	$17	12V, 5A, 60W
Charge controller	$13	5A, 12V, 60W panel max
Solar Panel	$38	20W, 20.5”x14.4”
Wifi Repeater	$45	Datasheet, Sales page, 5.5W max power, Up to 24V DC input

Total Cost including tax and shipping

(17+13+38+45)*(1.1)+10 = $135

Power Audit

The wifi repeater claims a “max power of 5.5W” I’m hoping that average power requirements are less than this?  

Assumptions (24hr period):

3W continuous average power usage

20 hour up time

4 hours of direct sunlight (source)

85% charge efficiency (source)

Power generation:

4hr * 20W * 0.85 = 68 Wh

Power consumption ?:

3W * 20hr = 60Wh

--

Max Schwartz

maxschwartziv@gmail.com

314-578-4503

_______________________________________________
mesh mailing list
mesh@lists.sudoroom.org
https://sudoroom.org/lists/listinfo/mesh

_______________________________________________
mesh mailing list
mesh@lists.sudoroom.org
https://sudoroom.org/lists/listinfo/mesh