From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-x22f.google.com (mail-qk0-x22f.google.com [IPv6:2607:f8b0:400d:c09::22f]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 7A5F33BA8E for ; Tue, 13 Jun 2017 17:09:33 -0400 (EDT) Received: by mail-qk0-x22f.google.com with SMTP id g83so12677377qkb.3 for ; Tue, 13 Jun 2017 14:09:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=cwvvSy0RDtGba9ID4kolJJ8HtIu+cBKSWxs8afXh61M=; b=kqAxWNrVe5ikfkx6WJEl1bsGpZtD+DRtK5QiDYbHbd+Il0vE562yzw9rQe2JNKF0sT e9iQl32Ka/WQnvmvvdXrtP/0dkbV6vDiw/BfHAeJVpr9s8ZMjYOgsMi/suY6SXWvJIms fiWKqYaWgWjielCGSb9mJYJaohhYYsAXalwGbL5d66egKYENV2dw3GVd9XZLD3l4zRXn ALWOZ2GH93pzQP1GP2qN+35ksidMA1pQGGRJNRbGMAzE9wMg96qI8N5ssiKUYcuuXg0l 3Onb3l02GB26w4ucqs8xZTG7LeaMmsWn01q2GIiTiQmiIPJ4ZkJj44ATDiphAYqDMQHd +isQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=cwvvSy0RDtGba9ID4kolJJ8HtIu+cBKSWxs8afXh61M=; b=hJ+CVGthifn/tIvzP9E2u7Iip2B4XQZ+Ca3okdZLf1HmhUEjXq1aerO2pxmFARwKxo vrOT7RUO9p6/pG7zcWRLia+2bSXV3mxHBVZ+/N6kWBpgRc7TMsv1/aNbQGEUg4C9Ws/1 SZqffnjR57VFPA+RJ0JsKNIYPX3iBuyl3EopCPbxpVRY2YzbHrkSeC5Ai6ZoNeyJ7zNC MiG7h5C7bmv67NRf55hdWA106EFygL4OnOJrHMXtYd5RRHJEj/u2TkMygTzINOM55Bzs bSgc9/t+PsvNKKKBX+E94AYs+wXJXfHBwaSqA+BbvKG3G3gk8hnhzbqCB8eK0TmYJ6Jq 8RQQ== X-Gm-Message-State: AKS2vOzDJFmZTVj4nucUPCSifYXqOikSEMXTqxVVjOuew1bxyv5UFbHr HMRrQX0f3rKwInJv X-Received: by 10.55.44.129 with SMTP id s123mr2228517qkh.137.1497388172608; Tue, 13 Jun 2017 14:09:32 -0700 (PDT) Received: from [10.100.0.184] ([144.121.2.62]) by smtp.googlemail.com with ESMTPSA id c77sm1599719qka.25.2017.06.13.14.09.30 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 13 Jun 2017 14:09:31 -0700 (PDT) To: Dave Taht Cc: Christopher Robin , "cerowrt-devel@lists.bufferbloat.net" References: <2d60e776-2a4f-de66-0d2f-a36568562f96@gmail.com> <1496685154.544113991@apps.rackspace.com> From: Richard Smith Message-ID: <0477ece1-2253-b6bc-aba7-91ddca3cafa5@gmail.com> Date: Tue, 13 Jun 2017 17:09:30 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [Cerowrt-devel] solar wifi ap designs? X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 13 Jun 2017 21:09:33 -0000 On 06/13/2017 01:25 PM, Dave Taht wrote: > If you run the numbers for Nicaragua, you'll find that the solar > coverage is WAY better year round. (share the spreadsheet?) The > problem is the rainy season from late august through november, and I > was aiming for 3 days of battery life, with only 20% sun over those > days. In general is better but I would not call it WAY better. I looked up Harmonia and used Cárdenas, Nicaragua as my data point. The average is a pretty solid 5-6 hours across the year but the rainy season has a large effect. 20% matches the 3-day in Oct which looks like it's the weakest month overall, but the 3-day minimum is in Aug @ 13%. When you do the math it actually ends up being worse that the minimum in Los Gatos. Los Gatos had a minimum of 2.4 hours where as Cárdenas nets out at 2 hours. Here's the spreadsheet. 'Lowest' and 'Highest' are Los Gatos and 'Nicaragua' is Cárdenas. https://docs.google.com/spreadsheets/d/1p6PYBgcTtLR9cwWlVpzRiIt4t2RcjoYVC4_K6WxLmso/edit?usp=sharing > I might give wind a try, also. Wind and solar are great complements to each other. In general one is good when the other is bad. > I am heading down there next week or the one following to explore the > possibilities (and get some surfing in!). Nice. Can't go wrong with some good beach time. > Now that my new office space is coming along, I have space and tools > (cnc machine, etc), to try and build something that would work. I'd > always intended local manufacture of the edison batteries..... Cool. I'm interested in seeing what you come up with. Maybe you can do a kickstarter to build a larger quantity of them. :) -- Richard A. Smith