Hi, I’m working on a project where a number of nodes connect to a hub using espnow and the example code here https://github.com/pcbreflux/espressif/tree/master/esp32/arduino/sketchbook/ESP32_espnow_MasterSlave Firstly, I have never worked with WiFi before so forgive me if this isn’t the best method ...

Hi, I have a NodeMCU ESP32. The pinout diagram shows the following pins, 6,7,8,9,10 & 11 as being connected to the flash. They are also shown as being able to be used for PMW. I would like, if I may ... to use them for inputs so I set up the following code to test them int pinButton = 6; //the pin w...

Hello roge_

I too am very new to ESP32 and trying to learn wifi.

Can you please post your working code so I can learn from it?

Thanks, Steve.

One other thing I forgot to mention was that the ESP32s must set up their own network, they can’t connect to an existing WiFi network for security (the customers not mine) data stored on the pi would be sent to the cloud via cellular comms.

Hello Krzysztof, Thank you again for that. I have given the websockets tutorial a quick glance and it looks interesting. As it stands, I take data from all 4 channels sequentially, send the data, wait for the timer and do it again. I could sample just 1 channel at a time, store the data in an array,...

Thanks for the encouragement. I like Your ideas but I’m at a loss though as to how the nodes would send their data to the cloud. I think it would need something like a Pi to request the data on a schedule. The data would comprise four arrays of 32768 Int numbers representing the voltages. These woul...

Hi Guys, Im new to the ESP32. Previously, I have been using an STM32F103 board for my vibration analysis project. I have written code for the STM32 which basically sits waiting for a request via USB to send it data. It then reads from 4 ADC channels, at the samples per second requested by the host a...