Connecting 2 ESP32s, but also using Serial

Projects Programming
1

Hi.
So my problem is this.
I want to connect 2 ESP32s.

1:
Connected by bt to an app on my phone created in MIT App inventor
Running an LED WS2812B strip - I think this means it must be serial
Connect to another ESP32 - I think this should be via BLE

2:
Connect to 1 above by BLE
Run a DY-SV17F sound card running earphones
Run piozo buzzers, (2) synced to the earphones

So my question is can I run BLE AND Serial on the same ESP32 boards?
Or, alternatively, I suppose I can run both on full serial, but can anyone point me at a decent tutorial on how to connect them serially.

Thank you in advance.

2

The ESP32 contains 3 hardware UARTs. One is used for the "Serial" object. That leaves the other 2 to use as you wish.

3

you can

but you can't easily run WiFi and BLE as they share the same antenna (if your MIT App inventor application uses WiFi to connect)

what should be serial?

4

OK.

So.

  1. Not using WiFi. Does that also apply to Bluetooth?

  2. I got the impression I'd need the 'power' of serial to run the led ribbon. Not so?

5

you can certainly run BLE and the hardware serial ports at the same time

the ESP32 can power low current devices such as a LED or a sensor but anything else requires an external power supply
upload a schematic showing your wiring and how you power the system

6

Data is sent serially but not through the Serial port.

7

read The Magic of NeoPixels | Adafruit NeoPixel Überguide | Adafruit Learning System

the typical wiring would be something like this where the strip is powered separately from the Arduino and GND are joined.

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