Hello! I made a project, but Uno’s pins have ended. I wanted to add a Nano and make it communicate with each other via UART, but unsuccessfully. What is wrong? Codes are here. receive.xodball (3.1 KB) transmitt.xodball (4.8 KB)

For a start, you haven’t called “begin” on the UART at boot. This gets the ball rolling.

Do i need to begin it on both Arduinos?

So? receive.xodball (3.5 KB) transmitt.xodball (4.2 KB)

Look at this, @nkrkv is about to write a guide on this. Maybe you can help each other. [image] What is the best example for UART/Serial guide article? Hello everyone! I’m thinking about writing down a bunch of guide/recipe articles and showing UART (aka serial) communica…

Yes. It sets the baud rate for communication. Serial comms won’t work without that being correct.

Can i use I2C if i couldn’t make a connections?

UART guide article is coming next week. The author is not me, but nevertheless, it will shine the light on serial communication I hope.

Why don’t you make a simple transmitter using the arduino IDE, from an example or similar. Something you know works.? Then use XOD to make a simple patch that listens for received bytes. This would be to establish you can make at least a connection (You may have a damaged board or something). One …

[image] s7ven: (You may have a damaged board or something). I have noticed, that my board have a problem reading ds18b20… About Arduino IDE, I just wanted to do it in XOD, but I will try. How about I2C? Is it only for sensors or displays, ets? Can I do a “phone” for arduino using it?

I’m only suggesting the Arduino IDE as part of the problem-solving process. At this stage, you don’t know if your client code, your server code, the XOD IDE code, or the hardware itself which is the issue. So best to eliminate as many variables as you can. I haven’t used I2C for comm devices, so ca…

Error in UART communication between Uno & Nano

tobias August 22, 2018, 6:34pm 5

Look at this, @nkrkv is about to write a guide on this. Maybe you can help each other.

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Error in UART communication between Uno & Nano

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