Sample programmes for a specific board based on ESP32-WROOM-32D

[banhidio]

Greetings to everyone.
I have a specific board based on ESP32-WROOM-32D chip, it is referred as 2AO-8AI-8DI-8DO-ESP32 WiFi Netword Relais Board. It is manufactured by ELETERCHSUP. Analog outputs can be programmed, but with analog inputs, digital inputs and relays cannot I have had no success. Digital inputs use SN74HC165 and the relays are driven by SN74HC595 circuits. I am looking for simple sample programs dealing with the use of digital inputs and relay outputs of this board.
Thanks for any help in advance.
banhidio

[Minatel]

Hi,

Information about the board is always welcome. Please post pictures, links, schematics, and everything you might have.

Have you tried to use the blink example on any of the relay's GPIOs?

[lbernstone]

The coding on shift registers is not complex. If it isn't working, make sure your pins are correct. Here's an example
https://wokwi.com/projects/443541214532926465