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Wolfgang Hottgenroth 2018-05-24 01:20:18 +02:00
parent 85d5d2c2fc
commit c574383eec
Signed by: wn
GPG Key ID: B586EAFCDF2F65F4
8 changed files with 69 additions and 6 deletions
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6
dist/main.js vendored
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@ -6,18 +6,14 @@ const logger = require("./log");
const express = require("express");
function getPageOptions(contentStr) {
let pageOptions = {};
// logger.info(`contentStr: ${contentStr}`)
try {
let lines = contentStr.split("\n");
let firstLine = lines[0];
// logger.info(`firstLine: ${firstLine}`)
let pageOptionsStr = firstLine.replace(/^\s*<!-- (\{.+\}) -->[\s\S]*$/, "\$1");
// logger.info(`pageOptionsStr: ${pageOptionsStr}`)
pageOptions = JSON.parse(pageOptionsStr);
// logger.info(JSON.stringify(pageOptions))
}
catch (_a) {
// logger.info("No pageOptions found")
logger.info("No pageOptions found");
}
return pageOptions;
}

2
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@ -1 +1 @@
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<!-- { "title": "Something really useful: 433MHz Power-Outlet Control" } -->
<h1>#title#</h1>
<p>
We've lots of more or less cheap 433MHz Switchable Power-Outlets in the house, mostly for decorative lights. You get them for under 15€ in the Building Center, three at once with a remote control. Usually, you can control four switches with one remote, period. (A promising exceptions are the device from Intertechno.)
</p>
<p>
Now I was looking for a way to
<ol>
<li>Control the switches from different manufacturers with one remote.</li>
<li>Control them from really remote - from the office or from holiday.</li>
<li>Control them programmatically.</li>
</ol>
There are a couple of Arduino libraries out there which are working with this cheap 433MHz senders and receivers from China:
<img src="files/sender_receiver.png" alt="sender_receiver" width="406" height="386" /><br/>
I tried several ones, not all a really working, but finally I stopped at <a href="https://github.com/sui77/rc-switch" target="_blank">https://github.com/sui77/rc-switch</a>, which works really good.
</p>
<p>
First challenge now is to get the codes out of the remotes. For this purposes the rc-switch library provides an example sketch for the Arduino. I extended it a bit and got this:
</p>
<p>
<a href="files/img_01012-e1478087121580.jpg"><img src="files/img_01012-e1478087121580.jpg?w=730" alt="img_0101" width="730" height="548" /></a><
</p>
<p>
<a href="files/img_0105.jpg"><img src="files/img_0105.jpg?w=730" alt="img_0105" width="730" height="548"/></a>
</p>
<p>
Software for this thing can be found here <a href="https://gitlab.com/wolutator/433Receiver.git" target="_blank">https://gitlab.com/wolutator/433Receiver.git</a>.
</p>
<p>
This is how it works:
</p>
<p>
<a href="files/img_0111-e1478087101747.jpg"><img src="files/img_0111-e1478087101747.jpg?w=730" alt="img_0111" width="730" height="548"/></a>
</p>
<p>
The second challenge is to send the codes out into air and let the power switches receive them. This is done with this thing:
</p>
<p>
<a href="files/img_0100-e1478087375824.jpg"><img src="files/img_0100-e1478087375824.jpg?w=730" alt="img_0100" width="730" height="548" /></a>
</p>
<p>
It is a Arduino Ethernet Board with a PoE-adapter and the 433MHz sender directly attached to it. I glued it under a table in the living room.
</p>
<p>
This thing received messages via MQTT and send them out via 433MHz.
</p>
<p>
The software is <a href="https://gitlab.com/wolutator/Mqtt433Gateway.git" target="_blank">here at Gitlab</a>.
</p>
<p>
BTW: do not expect beautiful software, this has been made on Halloween evening and night when waiting for the kids to come home.
</p>

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