A board to connect a 433Mhz device to your wifi networkDesigned by Lemcke Solutions in Netherlands
What is it? With this board you can control devices that work on 433Mhz through your wifi network. I use the board myself to activate a wireless siren by sending a REST call to this board with Home...Read More…
With this board you can control devices that work on 433Mhz through your wifi network. I use the board myself to activate a wireless siren by sending a REST call to this board with Home assistant, but there are many more uses thinkable. The board uses a ESP8266 that can be programmed with the Arduino IDE.
to program the board, you will need a FTDI module, like this one
To use this board, you'll need to do some programming. The board can be programmed with the Arduino IDE. make sure you have installed the Arduino ide and the ESP8266 arduino core, which you can find at https://github.com/esp8266/Arduino
You can program the board by setting the dipswitch to "on", plugging in the ftdi module and powering up or resetting the board. After programming, set the dipswitch to off. Make sure you provide the board with power through the power socket, the ESP does not get powered by the FTDI module.
Before you can program the board to send a 433Mhz signal, you probably need to figure out what signal you need to send first. The best way to do that is by using a Arduino and a 433Mhz receiver, together with the rc-switch library. There is an excellent tutorial for that on Instructable, accessible via the Doumentation link at the bottom of the page.
If you click on "source code" at the bottom of this page, you'll find a sample where the board is used to activate a 433Mhz siren, using a rest call.
Different power supplies can have different polarity. The board is designed for adapters with + on the inside, and - on the outside. Using a different polarity will fry the HT7333 FDO, the board has no protection for this. Look for this sign on your adapter: You can use a adapter with a minimum output voltage of 5v up to a maximum voltage of 12v
I offer a few different versions:
Just the board. You'll have to source the parts yourself and solder it together.
All the parts to solder yourself, the kit does not include the FTDI module or power adapter. I do also offer a kit with a 5v adapter, but due to the shipping costs, it will be cheaper to buy the adapter from aliexpress yourself.
Fully Assembled and Tested Board
Does not include the FTDI module or power adapter. I do also offer a version with a 5v adapter, but due to the shipping costs it will be cheaper buying the adapter from aliexpress yourself.
This version is your best bet if you don't feel like soldering. All you need to do is program it and you're good to go.
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Tom | July 20, 2018
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