{"id":99,"date":"2013-08-14T14:09:07","date_gmt":"2013-08-14T20:09:07","guid":{"rendered":"http:\/\/www.kv6o.com\/wordpress\/?p=99"},"modified":"2013-08-14T14:09:07","modified_gmt":"2013-08-14T20:09:07","slug":"raspberry-pi-low-powered-computing-fun","status":"publish","type":"post","link":"https:\/\/www.kv6o.com\/wordpress\/2013\/08\/14\/raspberry-pi-low-powered-computing-fun\/","title":{"rendered":"Raspberry Pi – low powered computing fun!"},"content":{"rendered":"

I have been playing around with my Raspberry Pi <\/a>for a while here, my original plan was to use it as the high level control for a Arduino based repeater controller (handling the low level repeater stuff (timers, CWID, etc.), but I had my home Windows based server die on me and I needed something to update the CWOP network<\/a> with my weather station data.\u00a0\u00a0 The server I had was a Windows 2003 server running on an old T42 IBM Thinkpad with an external USB drive. It died a somewhat noisy death as the CPU cooling fan finally seized (made an awful racket for about 24 hours before giving up the ghost).\u00a0 I had performed surgery once before to replace the fan, but as I didn’t really need a full Windows server to perform a simple web update every 8 minutes, and I also have a 1TB LG-NAS device to act as a file server – so why have this power hungry machine to perform this simple task?\u00a0 Enter the Raspberry Pi…<\/p>\n

I found a post<\/a> about using PHP on the Raspberry Pi to update the CWOP network from data collected from a Peet Bros<\/a> U800 – I was using a Peet Bros U2100, so I figured I’d give it a try.
\nI made a few changes as the wind speed was being reported in kph, not mph, the humidity was being reported incorrectly at 100% (needs to report “00”), and I set it up to report local time.\u00a0 Success!\u00a0 The RasPi was now uploading my WX reports to CWOP every 8 minutes and taking a fraction of the power. It’s a low powered machine on 2 levels – doesn’t draw much current (about 2.5W), but it’s not a high performance workstation either.\u00a0 But it’s perfect for this application – no need to tie up a power hungry computer 7\/24 to perform a simple task.<\/p>\n

Since this is barely using the RasPi capabilities, I am playing around with other tasks it can perform – currently it’s also hosting an inexpensive SDR module (Realtek RTL2832U based USB TV tuner) to receive some local FM data and decode it.\u00a0 I am still not 100% on the legality here (it’s public safety POCSAG pages) – I need to clear this up before I take it much further. I am a subscriber to this paging system as a firefighter, and I have an application in mind (fire station paging “receiver”), so I am a legitimate user – but I still want to make sure this is OK.
\n<\/span><\/p>\n

More on how to do this can be found here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

I have been playing around with my Raspberry Pi for a while here, my original plan was to use it as the high level control for a Arduino based repeater controller (handling the low level repeater stuff (timers, CWID, etc.), but I had my home Windows based server die on me and I needed something […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-99","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2NQIK-1B","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.kv6o.com\/wordpress\/wp-json\/wp\/v2\/posts\/99","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kv6o.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kv6o.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kv6o.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kv6o.com\/wordpress\/wp-json\/wp\/v2\/comments?post=99"}],"version-history":[{"count":2,"href":"https:\/\/www.kv6o.com\/wordpress\/wp-json\/wp\/v2\/posts\/99\/revisions"}],"predecessor-version":[{"id":101,"href":"https:\/\/www.kv6o.com\/wordpress\/wp-json\/wp\/v2\/posts\/99\/revisions\/101"}],"wp:attachment":[{"href":"https:\/\/www.kv6o.com\/wordpress\/wp-json\/wp\/v2\/media?parent=99"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kv6o.com\/wordpress\/wp-json\/wp\/v2\/categories?post=99"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kv6o.com\/wordpress\/wp-json\/wp\/v2\/tags?post=99"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}