DIY rf switch

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Hi there.
I am currently using Pimatic with the homeduino plugin (using a arduino nano clone) to control my intertechno rf switches. And it works great!
But sometimes you might want to be independant from 230V or switch something without a wall plug near your location.
In fact what i am looking for is a relay or transistor connected to something cheap as a nano clone and a battery to switch low current/low voltage.
Is there any kind of protocol implemented in Pimatic that supports switching a home-brew solution like i mentioned above?

Greetings
Roman

hey Roman!
you can try it with mysensors.org and the pimatic-mysensors plugin

here’s our development forum https://forum.pimatic.org/category/28/mysensors
and here you can find more information on the plugin https://github.com/DheerajKhajuria/pimatic-MySensors
here you can learn more about building a small sensor https://forum.pimatic.org/topic/1457/how-to-mysensors/9

for a battery powered solution i guess this is the best option right now.
there are also very nice esp8266 solutions liek espimatic or espeasy but for the esp you need a psu since it draws a lot of power.

Great!
I will give that a try.
Thanks a lot!

Does it need to be an Homebrew solution?

I have a switch that looks like this.
This should do the job you want, wouldnt it?

Warning: I dont know (but i think it should) if pimatic works with exactly the switch above but i just wanted to let you know that there are low cost solutions of 230V-independant wallswitches.

for 433 MHz switching this would be a solution but as I understand @DonHorsto wants to switch something without 230V. So a battery powered sensor / actuator / relay whatever would be the receiver in that case - or am i wrong?

Otherwise I would recommend the wall switch YWT8500 from intertechno.
Works with pimatic and has a good range and is easy to install. So you are having a wall switch somewhere you want it and can switch an RF power outlet with pimatic.

If not homebrew you could take a battery powered KaKu switch?

What i am looking for is something like a battery powered actuator.
Just like @leader21 mentioned, it is supposed to be a receiver, not a sender which would be like @thymian said.

In fact something like
http://www.intertechno.at/produkte/empfaenger/schalter/ITWR-3500.html
but battery powered and cheaper

Just a Arduino nano, connected to a relay (or a transistor) and a (for example) 433MHz transmitter XY-FST.
Then, sending a command to that device, it could change the state of the relay or transistor and turn on, for example, a fan or whatever you can think of

I had something like that but not battery powered.
It’s working with the KAKU protocol, in pimatic I have a switch wich uses switch1 protocol.

https://github.com/incmve/Arduino-RF-receiver/blob/development/arduin-rf-relay.ino

You could add a sleep function to it and run it on battery’s

That looks quite nice and exactly what i am looking for!
It’s pretty easy to put some sleep functions in it so I’ll try to figure out how to configure that.

Thanks a lot!