Any way to send message from ESP32 to Arduino UNO?

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1

I am doing a project to retrieve data from AWS DynamoDB using ESP-32. I now need to send the data from ESP-32 to Arduino Uno via serial communication or any other possible means

2

Use Hard/Soft Serial Ports as per setup of Fig-1.

uartESP32Uno
uartESP32Uno841×369 9.91 KB

Figure-1:

Test Sketches:
Prepare sketches for both Arduinos, upload, and observe the outcomes. If works, it is fine; else, post the codes/sketches.

3

I recommend the Serial Input Basics tutorial. As suggested above, a logic level shifter is required to connect 3.3V and 5V devices. This one or similar will work well.

4

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