Grove simple RF link kit in esp-home

Products & Technology Grove
#1

Hi

Is there a way to include the simple Grove RF Link kit in ESP-Home? I was looking at ESP-Home configurations and the different sensor, but the RF Link is not in there.
Is it possible? If so is there a tutorial somewhere? Or has anyone else done this before and how?

Thanks in advance!

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#2

Hi there,
And welcome here…

Thats a very good question, im :thinking:
Wondering same?

Ill look into it and post what I find.:wink:

GL :smiley: PJ :v:

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#3

You have to Install and use the RCSwitch Library.

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#4

So I am trying to take this step by step, I’m first trying to get it to work in the regular arduino IDE instead of ESPHome. If it doesn’t work in ESPHome, I might just add an ESP to send signals to the C3 that’s controlling the RF.

I’m trying to follow this guide: Grove - 433MHz Simple RF Link Kit | Seeed Studio Wiki
but I can’t even get that to work. I’ve downloaded the virtualwire library, but it fails to compile. It throws this error:

\Arduino\libraries\VirtualWire\VirtualWire.cpp:17:10: fatal error: util/crc16.h: No such file or directory
17 | #include <util/crc16.h>
| ^~~~~~~~~~~~~~
compilation terminated.
exit status 1

Compilation error: exit status 1

Anyone else having issues with this library? Not sure how to edit libraries in order to get this to work.

Thanks in advance!

#5

The VirtualWire library is primarily designed for AVR-based boards (e.g., Arduino Uno, Mega). On ESP32/ESP32-C3, you should consider using a compatible alternative like the RadioHead library.

#6

Ok, I have some spare Uno’s I can use try this on. But the code still does not compile when changing te board. There is something wrong in the library I guess?

#7

I can’t even get a simple Radiohead sketch to compile correctly. It throws an error on the RH_ASK.
It says it does not recognize the type RH_ASK.

Found this sketch in this tutorial: RF 433MHz Transmitter/Receiver Module With Arduino | Random Nerd Tutorials
The original sketch says to include RH_ASK.h, which does not work either. It throws a lot more errors talking about atomic block start and atomic block end.

#include <SPI.h>
#include <RadioHead.h>


RH_ASK driver;

void setup()
{
    Serial.begin(9600);	  // Debugging only
    if (!driver.init())
         Serial.println("init failed");
}

void loop()
{
    const char *msg = "Hello World!";
    driver.send((uint8_t *)msg, strlen(msg));
    driver.waitPacketSent();
    delay(1000);
}
#8

Hi there,
So FWIW, Compiles AOK on an UNO, BTW. :+1:
You have a specific RF module in mind?

Why not something like this

HTH
GL :slight_smile: PJ :v:

#9
#10

Hi there,

Those are the ones NOT working…
GL :slight_smile: PJ :v:

#11

chrome-https://www.airspayce.com/mikem/arduino/VirtualWire.pdf

It works off the virtual wire communication protocol… which is not Arduino UART and probably not what the complainer is using… very typical error route

#12

I am using the first link kit posted by cgwaltney.
Those will not work? Then why is that being sold? Or do you mean it won’t work with ESPHome?

I did get to compile the code indeed with a UNO or MEGA. So I might try to get a UNO to control the RF kit and an ESP to interface with the UNO.

So what route should I go with that RF kit? The virtualwire route or the radiohead library?

#13

can you get the kit to work with the XIAO? if you can get it to work with the XIAO i would think it would just be a relay question after that!

#14

Not yet unfortunately, both the virtualwire or the radiohead library don’t compile for the esp32. I will probably try to get it to work on a Uno and use the esp to interface with it. If off course I can get it to work on the uno.