{"id":2633,"date":"2021-10-29T21:33:00","date_gmt":"2021-10-29T19:33:00","guid":{"rendered":"https:\/\/buznik.net\/j\/?p=2633"},"modified":"2023-02-27T22:06:10","modified_gmt":"2023-02-27T20:06:10","slug":"smoke-and-temperature-sensor-for-my-3d-printer","status":"publish","type":"post","link":"https:\/\/buznik.net\/j\/2633-smoke-and-temperature-sensor-for-my-3d-printer\/","title":{"rendered":"Smoke and\u00a0Temperature Sensor for\u00a0my 3D-printer"},"content":{"rendered":"\n

Sometime ago I bought an IKEA smoke sensor. It lived some time in the kitchen as expected, but then I put next to my 3D-printer that was located in the garage.<\/p>\n\n\n\n

But then, it doesn\u2019t make a lot of sense if it only fires an alarm in case of smoke, since I maybe away, so I decided to hack it into something IoT.<\/p>\n\n\n\n

There are a couple of useful blog (this<\/a> and that<\/a>) posts that I started from.<\/p>\n\n\n\n

It took quite a while to just follow the advice given there and to solder properly ground connection to the CS2105G0-S12 chip (that people suggest is actually MC145012). Anyway my project is a bit simpler in a way \u2013 the wi-fi module (Wemos D1 mini) is constantly powered with USB and feeds data every second to Blynk.<\/p>\n\n\n\n

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One other issue I had was that smoke sensor IC is using 9V for power and signals, so it had to be stepped down. With invaluable help from my former colleague Mich<\/a>, I did it using an NPN transistor and it works pretty smoothly.<\/p>\n\n\n\n

Printed a special case for it to fit all the components.<\/p>\n\n\n\n

In case of smoke the Blynk app will send me a notification. Later on, it will also turn off the smart socket that the printer is powered with.<\/p>\n\n\n\n

Arduino source is on Github<\/a>. I will try to put some more details and the scheme later.<\/p>\n\n\n\n

I have no illusions that this thingy is pretty weak in terms of safety and reliability \u2013 there are too many things to break in case of a real fire \u2013 but it was an important learning project for me.<\/p>\n","protected":false},"excerpt":{"rendered":"

Sometime ago I bought an IKEA smoke sensor. It lived some time in the kitchen as expected, but then I put next to my 3D-printer that was located in the garage. But then, it doesn\u2019t make a lot of sense if it only fires an alarm in case of smoke, since I maybe away, so I decided to hack it into something IoT. There are a couple of useful blog (this and that) posts […]<\/p>\n","protected":false},"author":3,"featured_media":2637,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[768],"tags":[],"class_list":["post-2633","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-projects-en"],"acf":[],"jetpack_featured_media_url":"https:\/\/buznik.net\/j\/wp-content\/uploads\/2023\/02\/img_20211029_233110_047.jpg","_links":{"self":[{"href":"https:\/\/buznik.net\/j\/wp-json\/wp\/v2\/posts\/2633","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buznik.net\/j\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buznik.net\/j\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buznik.net\/j\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/buznik.net\/j\/wp-json\/wp\/v2\/comments?post=2633"}],"version-history":[{"count":2,"href":"https:\/\/buznik.net\/j\/wp-json\/wp\/v2\/posts\/2633\/revisions"}],"predecessor-version":[{"id":2657,"href":"https:\/\/buznik.net\/j\/wp-json\/wp\/v2\/posts\/2633\/revisions\/2657"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buznik.net\/j\/wp-json\/wp\/v2\/media\/2637"}],"wp:attachment":[{"href":"https:\/\/buznik.net\/j\/wp-json\/wp\/v2\/media?parent=2633"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buznik.net\/j\/wp-json\/wp\/v2\/categories?post=2633"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buznik.net\/j\/wp-json\/wp\/v2\/tags?post=2633"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}