{"id":18143,"date":"2018-01-29T15:30:46","date_gmt":"2018-01-29T14:30:46","guid":{"rendered":"http:\/\/www.recantha.co.uk\/blog\/?p=18143"},"modified":"2018-01-29T14:44:56","modified_gmt":"2018-01-29T13:44:56","slug":"diy-electricity-meter-using-a-raspberry-pi-zero-w-and-some-mqtt-api-wizardry","status":"publish","type":"post","link":"https:\/\/www.recantha.co.uk\/blog\/?p=18143","title":{"rendered":"DIY electricity meter using a Raspberry Pi Zero W and some MQTT\/API wizardry"},"content":{"rendered":"

\"\"<\/a><\/p>\n

Kelly Hirano wanted to see how switching devices in his home on and off affected his electricity usage. Excited by the possibilities of reading the data from his SmartMeter, he discovered that he could buy a product (a Rainforest Eagle-200<\/a>) which would expose the data via an API. Looking at their API documentation<\/a>, he dug into the data using a Raspberry Pi Zero W and sent it out to a\u00a0MQTT broker running Mosquito<\/a>, as well as recording it locally. He added a Pimoroni Four Letter pHAT<\/a>\u00a0to the Zero to display the data. You can read a bit more over on his blog<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Kelly Hirano wanted to see how switching devices in his home on and off affected his electricity usage. Excited by the possibilities of reading the data from his SmartMeter, he discovered that he could buy a product (a Rainforest Eagle-200)…<\/p>\n

Read more →<\/a><\/p>\n","protected":false},"author":1,"featured_media":18144,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"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":[25,39,86],"tags":[622],"class_list":["post-18143","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-home-automation","category-programming","category-raspberry-pi-zero","tag-electricity-meter"],"yoast_head":"\nDIY electricity meter using a Raspberry Pi Zero W and some MQTT\/API wizardry - Raspberry Pi Pod<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.recantha.co.uk\/blog\/?p=18143\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DIY electricity meter using a Raspberry Pi Zero W and some MQTT\/API wizardry - Raspberry Pi Pod\" \/>\n<meta property=\"og:description\" content=\"Kelly Hirano wanted to see how switching devices in his home on and off affected his electricity usage. 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The lamp, which has been given the ability to simulate lightning, fog, rain and thunder using off-the-shelf parts is partly a glass tube and partly 3D-printed and\u2026","rel":"","context":"In "Accessories"","block_context":{"text":"Accessories","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=54"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/06\/weather_lamp_header.jpg?fit=1024%2C575&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/06\/weather_lamp_header.jpg?fit=1024%2C575&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/06\/weather_lamp_header.jpg?fit=1024%2C575&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/06\/weather_lamp_header.jpg?fit=1024%2C575&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":4428,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=4428","url_meta":{"origin":18143,"position":4},"title":"Distributed processing with the #RaspberryPi and RabbitMQ","author":"Michael Horne","date":"4 June 2013","format":false,"excerpt":"Adam Bloom from Pivotal has written a guide to installing and using RabbitMQ on a cluster of Raspberry Pis. Here's what they say about RabbitMQ: With Pivotal RabbitMQ, we have a highly scalable, efficient, easy-to-deploy message queue. Beyond the long list of support for languages and protocols that could connect\u2026","rel":"","context":"In "Software"","block_context":{"text":"Software","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=49"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":16336,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=16336","url_meta":{"origin":18143,"position":5},"title":"Wirelessly control an ESP8266 with MQTT messages from a Raspberry Pi","author":"Michael Horne","date":"3 February 2017","format":false,"excerpt":"Rui Santos from Portugal has written an excellent, comprehensive tutorial for those who want to get into ESP8266 boards and control them from a Raspberry Pi. He uses Python on the Raspberry Pi, with imported MQTT libraries, and C code for the Arduino-like ESP8266. The ESP8266, which is on the\u2026","rel":"","context":"In "Accessories"","block_context":{"text":"Accessories","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=54"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/02\/Raspberry-Pi-Publishing-MQTT-Messages-to-ESP8266-explained.png?fit=1032%2C268&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/02\/Raspberry-Pi-Publishing-MQTT-Messages-to-ESP8266-explained.png?fit=1032%2C268&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/02\/Raspberry-Pi-Publishing-MQTT-Messages-to-ESP8266-explained.png?fit=1032%2C268&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.recantha.co.uk\/blog\/wp-content\/uploads\/2017\/02\/Raspberry-Pi-Publishing-MQTT-Messages-to-ESP8266-explained.png?fit=1032%2C268&ssl=1&resize=700%2C400 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/18143","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=18143"}],"version-history":[{"count":1,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/18143\/revisions"}],"predecessor-version":[{"id":18145,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/posts\/18143\/revisions\/18145"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=\/wp\/v2\/media\/18144"}],"wp:attachment":[{"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=18143"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=18143"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.recantha.co.uk\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=18143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}