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I was about to ask whether mLink works with ESP32 boards. Short answer is yes. Slightly longer answer is it should support any development board that has an I2C port, is compatible with the Arduino IDE and supports the built-in I2C wire library. There is a caveat though, some third party developmen...

have just discovered a new version of the mLink library (2.3.0). Pleae, where do you announce new versions? If you're downloading the library directly from this forum, the best place to look is the first post in the mLink library thread: https://forum.hobbycomponents.com/viewtopic.php?f=58&t=3001&p...

I want to use a pair of the LoRa mLink modules to transfer information. One way to do this is to use PJON (https://github.com/gioblu/PJON). I have a library which converts PJON to LoRa using SPI rather than I2C. I can work on an I2C version. Is there any way to convert SPI output to I2C to avoid th...

I note that in the diagrams this and other mLInk items have the connection with pins closest to the Arduino. Does this matter? Could the Arduino be connected at the other end? You can use either the male or female header pins. It doesn't matter which one you use as they are electrically connected t...

I notice this module has a Vcc pin. Is this used at all? Is there any benefit with connecting it?

Nothing I can see. It's not connected to anything and so serves no purpose. I have no idea why the manufacturer labelled it that.

I’ll add this question to an FAQ in the first post.

I would need to connect the slave module to a short length of cable terminated in a USB C plug so I cold plug it in to the pedal's USB connector. I’m not sure if I’ve misunderstood this bit but you won’t be able to connect the slave module directly to the existing USB port on the pedal. Your best o...

It's ok, I didn't spot it straight away. TBH, I'm surprised it didn't throw a syntax error.

Any ideas what is wrong?

Yes, the issue is caused by the equals sign (=) in your code. You should change this line:

...to:

Hi Chris, I've been looking at the example sketches for the relay modules. The Read_Relay_0.ino has an error. The I2C address is defined as I2C_ADD. When this is used in the sketch it is add. Thanks, that error has been there since 2021! The example sketch Set_Relay_On_Time.ino isn't updated to incl...

One further thing, I think that the LongReach transmit example should have the line while(mLink.LORA_Tx_Busy(I2C_ADD)); after each transmit. Without it I don't always get the transmission, Good point. Technically because the examples invoke a delay after transmitting it doesn't need that line but I...