Physical IO pins on ESP32

[bobcroft]

I am using an Wemos Lolin32 V1.0.0 board and I had thought that when I set up a datastream that I would find the physical IO pins from 0 to 39, although I appreciate not all those pins are physically brought out to the board edge. However, I only see pins 0-13 and analog A0 - A4. Is that correct? because that number of pins is more like an UNO board. I also understand I can use virtual pins but I just wanted to check that only 14 digital pins and 5 analog pins can be used on an ESP32 directly.

[PeteKnight]

Yep, it’s not been implemented very well at all…

Can't read Digital & Analog By ESP32S board

@Dmitriy can you explain how the analog and digital datastreams are meant to work for various hardware types? If I choose ESP8266 in the web console I see 5 analog pins available numbered A0-A4. I also see pins numbered 0-14 which I assume represent the digital pins. The ESP8266 has one analog pin, A0. If I choose digital pins for the ESP8266 I see 14 pins, numbered 0-13. The ESP8266 has the following GPIOs: 0, 1, 2, 3, 4, 5, 12, 13, 14 & 15. If I choose ESP32 then I see the same analog pin…

My advice would be to avoid digital pins altogether…

Using Virtual Pins to control physical devices

I thought I’d write a guide about how to use virtual pins with app widgets such as buttons, to control physical devices such as relays, LEDs etc… Why use virtual pins anyway? I’d always recommend using virtual pins over physical pins when developing your code. There are a number of reasons, but here are what I consider to be the main ones: Virtual pins are hardware independent. This means that it’s far easier to port your code from one hardware platform to another in future (when you realise…

Pete.

[bobcroft]

Hi Peter, thanks for the prompt response, I had seen the earlier posts and read your excellent guide to Virtual pins. I’ll adopt the suggested approach of using all virtual pins in Blynk, since I am starting afresh with Blynk IOT. I have a couple more questions but I guess the correct method of posting is to stat a new thread for each question.