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Old 08-08-2017, 04:12 PM   #1
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Join Date: Nov 2012
Location: uk
Posts: 14
Default Cheap WiFi relay device needed

What is the absolute cheapest way to get a Raspberry Pi-style board, which has WiFi, and the ability to provide constant power using solar or other renewable means?

Or even just a really long-lasting battery rather than even renewable energy?

I am looking for links to products that I can buy

1. Board

2. WiFi

3. Power source

By the way, the WiFi chip must have the ability to run a relay... i.e. to be used to receive WiFi from a hotspot, and also to be used as a hotspot itself at the same time.

The device needs to do very little other than receive a WiFi connection and then repeat it in a relay-style, i.e. create a mobile hotspot.

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Old 08-10-2017, 07:52 AM   #2
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Join Date: Dec 2012
Location: USA
Posts: 498
Default Re: Cheap WiFi relay device needed

if you're wanting to do it the cheapest way you could get the pi 0 w, a standard wifi usb and a solar panel/battery combo.

Probably don't want to run directly off solar since it won't be operational over night, which means you should look for a battery pack that can be charged and discharged simultaneously. a quick search of reddit turned up this: https://www.reddit.com/r/raspberry_p...t_the/cu8oblg/

pi zero uses about .5 to 1 amp/hour which means you'd need about a 20,000mah battery pack at a minimum and probably a 15w solar panel which needs to be able to stand up to the weather wherever you are.

edit: oh and you'll probably want a waterproof container to put it all in. which means you'll need some sort of sealant to fill the hole you'll have to drill to get the usb power cord from the solar panel in.

EDIT2: and one of these if you're using the pi 0w and don't already have one: https://www.adafruit.com/product/2910
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