Communication between two NodeMCUs (ESP8266)

[alisaqib]

I was trying to communicate between two NodeMCUs via the Blynk console. My aim is for one NodeMCU to read data from a sensor(was using the accelerometer MPU6050), and send the same data to the other NodeMCU using Blynk.
I tried both bridging and keeping the authorization token the same for both, but those did not work at all. Is there any other way to send data?

[John93]

Hey there,
Are you using blynk legacy or IOT ?

[Blynk_Coeur]

If you are using Blynk iot

Webhook widget

Hi David , I use this code and it works well for me #include <ESP8266HTTPClient.h> . //************ Bridges *********************// String server_name = "http://fra1.blynk.cloud/external/api/"; // for French server String Auth1 = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxx"; // token for the receiving device 1 . timer.setInterval(5000L, read_some_data); // call every 5 sec . . . . // Bridge function void BridgeRead(String token, int virtual_pin, float value_to_send) { String server_path = server_name …

[alisaqib]

Hi, I am using Blynk IoT.
As I understand, this code is for the receiving end. What should I push to the sending node so that my data gets through?
Sorry, I’m kind of a beginner at this

[PeteKnight]

The code examples in the linked topic are for sending data to the Blynk server.

Pete.

[alisaqib]

Oh okay. How do I then receive data on the other node?
I would be needing to switch a pin HIGH on the receiving node, depending on the value that gets sent.

[PeteKnight]

When the data is written to the server it will trigger the BLYNK_WRITE(vPin) function on the receiving device.

Pete.