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HabrЗабавы в ближнем инфракрасном. Часть 2. Сенсор + Arduino + Скетч = Счётчик пробегающихВ предыдущей статье ( Часть 1 ) я описал "секреты" изготовления любительской сенсорной системы (типа "инфракрасный барьер") из трёх резисторов, двух диодов и одного транзистора. Пришла пора построить на её основе какую-нибудь практически полезную вещь. Ну, хоть для забавы. (Профессионалы дальше читать не должны.) Пусть это будет счётчик чего-нибудь. Студентов, выходящих из учебного корпуса, или железнодорожных вагонов, скатывающихся с сортировочной горки. Когда сенсорная система готова, интерес смещается к проблеме обработки поступающей от неё информации. Электронщик, отдохни, сходи попить кофе. Айтишник, просыпайся: твой выход.<a href="https://habr.com/ru/articles/909772/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://habr.com/ru/articles/909772/</a><a href="https://zhub.link/tags/arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#arduino</a> <a href="https://zhub.link/tags/%D0%BF%D1%80%D0%B5%D1%80%D1%8B%D0%B2%D0%B0%D0%BD%D0%B8%D1%8F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#прерывания</a>

Make Magazinheise+ | Was Fuse-Bits sind und wie man sie am ATmega328 anpasstHolen Sie alles aus Ihrem AVR-Mikrocontroller heraus: Nutzen Sie einen externen Taktgenerator, schützen Sie Ihr geistiges Eigentum und verhindern Sie Abstürze. <a href="https://www.heise.de/ratgeber/Was-Fuse-Bits-sind-und-wie-man-sie-am-ATmega328-anpasst-10373669.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&utm_source=mastodon" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.heise.de/ratgeber/Was-Fuse-Bits-sind-und-wie-man-sie-am-ATmega328-anpasst-10373669.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&utm_source=mastodon</a><a href="https://social.heise.de/tags/Arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Arduino</a> <a href="https://social.heise.de/tags/Entertainment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Entertainment</a> <a href="https://social.heise.de/tags/IT" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IT</a> <a href="https://social.heise.de/tags/Maker" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Maker</a> <a href="https://social.heise.de/tags/Mikrocontroller" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Mikrocontroller</a> <a href="https://social.heise.de/tags/Mobiles" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Mobiles</a> <a href="https://social.heise.de/tags/Speicher" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Speicher</a> <a href="https://social.heise.de/tags/news" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#news</a>

Tog HackerspaceWe had our students build an <a href="https://mastodon.ie/tags/arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#arduino</a> powered Steve at tonight's class.

HabrПроект «Мультиключ». Эмулятор ключей от домофона на ESP8266Никак не доходили руки до написания этой статьи, точнее я её планировал написать после полноценного перевода устройства на esp32 c3, который никак не состоится. Вкратце напомню о чем этот проект, и чем он закончился в прошлой статье. Мы разрабатываем компактное устройство для чтения, хранения, записи и эмуляции электронных ключей (которые чаще всего встречаются у нас в подъездах и на проходных). Изначально это был проект одного из моих учеников. Но в этом году, для участия во ВСОШ по робототехнике ему пришлось поменять тему работы, которая тоже довольно интересная, как-нибудь по неё тоже напишу). А я по наличию времени и энтузиазма продолжил добивать программную часть. В прошлой статье мы перевели устройство на esp8266, что сделало его более производительным и решило проблему с памятью. У нас получилось прочитать и эмулировать контактные ключи dallas и русские Сyfral и Metacom. После этого мы решили перейти к бесконтактным ключам стандарта EmMarine. Без контактные ключи уже так просто, при помощи одного резистора, не прочитаешь, нужен детектор-генератор на 125 кГц. На этом этапе опять очень помог проект от Alex Malov EasyKeyDublicator . У него я взял схему детектора без изменений. И первые тесты производил на Arduino Nano.<a href="https://habr.com/ru/companies/timeweb/articles/906902/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://habr.com/ru/companies/timeweb/articles/906902/</a><a href="https://zhub.link/tags/c" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#c</a>++ <a href="https://zhub.link/tags/arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#arduino</a> <a href="https://zhub.link/tags/esp8266" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#esp8266</a> <a href="https://zhub.link/tags/esp32c3" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#esp32c3</a> <a href="https://zhub.link/tags/emmarine" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#emmarine</a> <a href="https://zhub.link/tags/rfid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rfid</a> <a href="https://zhub.link/tags/timeweb_%D1%81%D1%82%D0%B0%D1%82%D1%8C%D0%B8" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#timeweb_статьи</a>

circfruitAh, my beloved unfinished project - binary watch. It’s actually done, I just can’t force myself to solder the 5th and final iteration. <a href="https://fosstodon.org/tags/electronics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#electronics</a> <a href="https://fosstodon.org/tags/watch" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#watch</a> <a href="https://fosstodon.org/tags/arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#arduino</a>

FozzTexxI'm using an <a href="https://mastodon.fozztexx.com/tags/esp32" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#esp32</a> as the microcontroller to receive the sensor data. That means that it's pretty easy to take the data and forward it on to an <a href="https://mastodon.fozztexx.com/tags/MQTT" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MQTT</a> broker. Now I can do whatever I want with the data, such as log it, or even better, make something that subscribes and use it for automation.<a href="https://mastodon.fozztexx.com/tags/arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#arduino</a>

FozzTexxYup! Swapped out the old receiver and put in the RX470C and just like that I'm receiving sensor data again. Now I need to add a decoder for the new sensors. <a href="https://mastodon.fozztexx.com/tags/arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#arduino</a>

FozzTexxOf course first thing I did was hook up a new 433MHz receiver to my logic analyzer, along with the chip in the temperature receiver, *and* one of the analog MX-RM-V5 receivers. Wow! The RX470C provides a nice clean signal too! I'll bet all I need to do is swap this into my existing <a href="https://mastodon.fozztexx.com/tags/arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#arduino</a> project and I'll start seeing wireless sensor data again!

FozzTexxThis morning I received a package with a different type of those little 433MHz transmitter/receiver boards. Instead of being a bunch of analog components, there's an IC and a crystal. The receivers are labeled RX470C-V01. Interestingly they came all still attached and not broken apart. They snap apart easily though. I guess they save a few cents not having a worker snap them for you? <a href="https://mastodon.fozztexx.com/tags/arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#arduino</a>

FozzTexxThe little tiny IC is labeled CMT2210LC. Looking at the data sheet, I see it's a 433MHz receiver which outputs a digital signal which indicates when it sees a signal. Very similar to those little analog boards you can get, but this chip is supposed to do a good job cleaning up and filtering.<a href="https://www.hoperf.com/uploads/CMT2210LC-EN-V0.9-20170817_1695349975.pdf" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.hoperf.com/uploads/CMT2210LC-EN-V0.9-20170817_1695349975.pdf</a>I hooked it up to my logic analyzer and it does a very good job of staying quiet except when there's a burst from a temperature sensor.<a href="https://mastodon.fozztexx.com/tags/arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#arduino</a>

FozzTexxWhat's inside of it? What else but a binary blob. I don't know why I was expecting anything else. 🤦🏻‍♂️ Of course it's going to be a single chip with no signal lines exposed.But wait!What's this little chip over here?<a href="https://mastodon.fozztexx.com/tags/arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#arduino</a>

FozzTexxI'm interested again in receiving wireless temperature sensors signals. Years ago I made an <a href="https://mastodon.fozztexx.com/tags/arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#arduino</a> program to receive and decode the signals from Radio Shack/Oregon Scientific sensors (<a href="https://github.com/FozzTexx/RSOS-sensor" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://github.com/FozzTexx/RSOS-sensor</a>), but lately it fails to decode or doesn't get a signal at all.Thought maybe I'd try getting a new sensor/receiver and seeing if I could hack a digital output into it. Looking around I found this for around $23 with 3 sensors.Question is, what's inside the receiver?

Doppel DraconiusStill cooking this in the science lab.Going to embed this to the free space of the gauge cluster of my van so I could get all sorts of info. Mostly Weather and Pollution/Hazard reports as well as a satellite clock that auto-sets for Timezone and Daylight Savings.<a href="https://dragonchat.org/tags/arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#arduino</a> <a href="https://dragonchat.org/tags/coding" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#coding</a> <a href="https://dragonchat.org/tags/hardware" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#hardware</a>

Tog HackerspaceOur <a href="https://mastodon.ie/tags/Arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Arduino</a> course continued this evening with participants getting to pick a project from our list of 50 people to build on the night. We had smart watering, Therman style noise makers, quiz games.

ishotjr ✨💙✨💗✨who else is at <a href="https://chaos.social/tags/Automate2025" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Automate2025</a> <a href="https://chaos.social/tags/Detroit" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Detroit</a> this week? found <a href="https://chaos.social/tags/Arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Arduino</a> and <a href="https://chaos.social/tags/DigiKey" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DigiKey</a> so far; who else do I need to check out? 🦾🤖✨

Emanuele PinesStrobo-Tuner - Note playback <a href="https://peertube.uno/w/tPFPJPLZVFvvcWKbarivyR" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://peertube.uno/w/tPFPJPLZVFvvcWKbarivyR</a>

Emanuele PinesStrobo-Tuner - Guitar Tuning <a href="https://peertube.uno/w/q6T9jJqSFgK5ZEpJr4DCNS" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://peertube.uno/w/q6T9jJqSFgK5ZEpJr4DCNS</a>

BokFiveArduino Short Reads (8 book series) <a href="https://bokfive.com/arduino-short-reads-8-book-series" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://bokfive.com/arduino-short-reads-8-book-series</a><a href="https://mastodon.social/tags/Arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Arduino</a> <a href="https://mastodon.social/tags/IoT" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#IoT</a> <a href="https://mastodon.social/tags/arduinoproject" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#arduinoproject</a>

poetasterOk. Release early. Release often. Document while lounging on a beach in Belize. For those 17 of you out there that have a scarp, I've published a binary you can just copy to the scarp and have a look at playing (in all the modes and roots!) MI braids ported to arduino (for the rp2040). <a href="https://github.com/poetaster/arduinoMI/releases" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://github.com/poetaster/arduinoMI/releases</a> <a href="https://mastodon.gamedev.place/tags/MutableInstruments" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MutableInstruments</a> <a href="https://mastodon.gamedev.place/tags/Arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Arduino</a>

LeRoy MillerA friend of mine thought I needed a couple of <a href="https://mastodon.radio/tags/CYD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CYD</a> boards - so I found a them on Amazon the JC2432W328C - a 2.8" TFT with capacitive touch screen & ESP32. This board is quite a bit different then my really "cheap" yellow board that I found on Aliexpress for I think $9 dollars. I found these to be a bit easier to use too.<a href="https://mastodon.radio/tags/ESP32" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ESP32</a> <a href="https://mastodon.radio/tags/Arduino" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Arduino</a>

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