Geekzone: technology news, blogs, forums
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.

293 posts

Ultimate Geek

# 258709 16-Oct-2019 18:05
Send private message quote this post

Any recommendations on a small-ish solar panel that would have a USB output on it?


Looking at powering a small wifi camera for outdoors that theres no nearby power source, thinking solar could be the best option. According to the vendor website "The power consumption is between 2-4 watts, depending on whether Night Vision is turned on".





Create new topic
15336 posts

Uber Geek


  # 2338374 16-Oct-2019 19:01
Send private message quote this post

Consider using a small 12V SLA battery charged by the solar panel so the device it works at night, unless the camera has a battery. You can get 12V to USB car converters on ebay for almost nothing.

293 posts

Ultimate Geek

  # 2339855 17-Oct-2019 15:40
Send private message quote this post

Anything you'd recommend?


Rather buy a complete set rather than needing to construct something.


56 posts

Master Geek

  # 2340872 19-Oct-2019 23:31
Send private message quote this post

Jaycar sells these, but not sure of the quality.

3413 posts

Uber Geek


  # 2340919 20-Oct-2019 02:11
Send private message quote this post

A 4 watt constant / 96 watts per day load would require an 80 watt solar panel and a 12v100Ah battery. 




My utmost cheapest design for you would be: 


Solar Controller  


Solar panel  






I would prefer you to be using a 120 watt solar panel and 12v-120ah or larger battery but i suspect you may be surprised how big of a system you actually need. If your thinking of a 7amp UPS / Alarm battery and a 20 watt solar panel, it will only take half a rainy day for the battery to go flat. 


4 watts uses 8 amps per day and for prolonged battery life you never want to let it discharge more than 50% otherwise you will damage it. So 8 amps per day x 10 cloudy days in a row = 80 amps x 2 = 160ah would be the ideal battery size. Even in sunny hawkes bay we can go 12 days in a row of mostly overcast cloud.  Thats where the solar panel running at 20% of its normal rating can help charge up the battery a little bit, and if you manage to get an hour of direct sun, the 80 watt panel will give you an extra 14 hours of run time. 




Running a 24v 1A power supply into a long Cat5 cable with 4 wires for + and 4 wires for - and a 12/24v to 5v switchmode (linear wont work) transformer at the camera might be looking quite cheap. 

Ray Taylor
Taylor Broadband (rural hawkes bay)

There is no place like localhost
For my general guide to extending your wireless network Click Here

301 posts

Ultimate Geek

Lifetime subscriber

  # 2340965 20-Oct-2019 10:00
Send private message quote this post

Won't this provide a good solution?



Create new topic

Twitter and LinkedIn »

Follow us to receive Twitter updates when new discussions are posted in our forums:

Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:

Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:

News »

Microsoft launches first Experience Center worldwide for Asia Pacific in Singapore
Posted 13-Nov-2019 13:08

Disney+ comes to LG Smart TVs
Posted 13-Nov-2019 12:55

Spark launches new wireless broadband "Unplan Metro"
Posted 11-Nov-2019 08:19

Malwarebytes overhauls flagship product with new UI, faster engine and lighter footprint
Posted 6-Nov-2019 11:48

CarbonClick launches into Digital Marketplaces
Posted 6-Nov-2019 11:42

Kordia offers Microsoft Azure Peering Service
Posted 6-Nov-2019 11:41

Spark 5G live on Auckland Harbour for Emirates Team New Zealand
Posted 4-Nov-2019 17:30

BNZ and Vodafone partner to boost NZ Tech for SME
Posted 31-Oct-2019 17:14

Nokia 7.2 available in New Zealand
Posted 31-Oct-2019 16:24

2talk launches Microsoft Teams Direct Routing product
Posted 29-Oct-2019 10:35

New Breast Cancer Foundation app puts power in Kiwi women's hands
Posted 25-Oct-2019 16:13

OPPO Reno2 Series lands, alongside hybrid noise-cancelling Wireless Headphones
Posted 24-Oct-2019 15:32

Waikato Data Scientists awarded $13 million from the Government
Posted 24-Oct-2019 15:27

D-Link launches Wave 2 Unified Access Points
Posted 24-Oct-2019 15:07

LG Electronics begins distributing the G8X THINQ
Posted 24-Oct-2019 10:58

Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.