{"id":1859,"date":"2024-06-03T12:35:13","date_gmt":"2024-06-03T11:35:13","guid":{"rendered":"https:\/\/ofalcao.pt\/blog\/?p=1859"},"modified":"2024-06-04T14:18:45","modified_gmt":"2024-06-04T13:18:45","slug":"controlling-lego-hubs-a-mqtt2pybricks-gateway","status":"publish","type":"post","link":"https:\/\/ofalcao.pt\/blog\/2024\/controlling-lego-hubs-a-mqtt2pybricks-gateway","title":{"rendered":"Controlling LEGO hubs: a mqtt2pybricks gateway"},"content":{"rendered":"
This post is part 1 of 1 of \u00a0mqtt2pybricks gateway<\/a><\/div>\n

We finally moved to a new home. Not an apartment on a 6th floor with dozens of crazy and noisy neighbors but a real house with a garden and a garage.<\/p>\n\n\n\n

I also quit my job and I am taking a rest. So I finally have both time and opportunity to look into domotics.<\/p>\n\n\n\n

I installed OpenHAB<\/a> on a Raspberry Pi and started adding ‘things’ to get familiar with it. The first was a Nedis dehumidifier I bought a few months after moving – we moved to a place with its own micro-weather, lots of humidity, and my wife and the younger kid have allergies problems so I’m trying to keep humidity levels low.<\/p>\n\n\n\n

Although the dehumidifier has builtin wi-fi we were using it just on manual mode but since it was easy to integrate with OpenHAB I started with it.<\/p>\n\n\n\n

OpenHAB offers ‘bridges’ for several types of devices. This dehumidifier is a Tuya device so I added a Tuya bridge and found that I could read humidity and temperature values even when the dehumidifier was in standby mode (previously, to know the humidity level of the room I needed to turn it on to be shown on the display and just humidity, no temperature readings).<\/p>\n\n\n\n

So I ordered two Tuya humidity+temperature sensors to monitor our bedroom and the #2 bedroom.<\/p>\n\n\n\n

And then I added a older humidifier to OpenHAB through an also older wi-fi power plug. The humidifier has a ‘mechanic’ power switch so I left it always ON and control it from the power plug.<\/p>\n\n\n\n

And then the third humidifier. But this one has a ‘digital’ power switch so you need to press it to turn it ON\/OFF. And no builtin wi-fi. So a fingerbot-like gadget was needed. I chose a Switchbot Bot<\/a>:<\/p>\n\n\n\n

\"\"\/<\/figure>\n\n\n\n

It is a Bluetooth BLE device, is supposed to be used with the SwitchBot Hub that works as a wi-fi to BLE gateway but I found a description of its API<\/a> so used python to control it and created my own mqtt2switchbot gateway with a Raspberry Pi Zero 2W (using ‘bleak’ and ‘pahoo-mqtt’) and adding a MQTT broker to my OpenHAB server.<\/p>\n\n\n\n

So I can control Bluetooth BLE devices from my domotics central.<\/p>\n\n\n\n

And LEGO Hubs are BLE devices.<\/p>\n\n\n\n

So the next obvious step was controlling LEGO from my domotics central \ud83d\ude00<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

This post is part 1 of 1 of \u00a0mqtt2pybricks gateway<\/a><\/div>

We finally moved to a new home. Not an apartment on a 6th floor with dozens of crazy and noisy neighbors but a real house with a garden and a garage. I also quit my job and I am taking a rest. So I finally have both time and opportunity to look into domotics. I … Continuar a ler “Controlling LEGO hubs: a mqtt2pybricks gateway”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_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","enabled":false},"version":2}},"categories":[38,371,191],"tags":[372,362],"series":[373],"class_list":["post-1859","post","type-post","status-publish","format-standard","hentry","category-ble","category-domotics","category-raspberry-pi-en","tag-openhab","tag-pybricks","series-mqtt2pybricks-gateway"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2Mhyv-tZ","_links":{"self":[{"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/posts\/1859","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/comments?post=1859"}],"version-history":[{"count":0,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/posts\/1859\/revisions"}],"wp:attachment":[{"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/media?parent=1859"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/categories?post=1859"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/tags?post=1859"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/series?post=1859"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}