08-04-2025, 08:12 AM
Because the circuit is not quite correct. Yes, it works, but IN IDEAL CONDITIONS on the desktop. It is not a fact that it will work normally in harsh conditions, and under some conditions (for example, accidentally short-circuiting +12V and A or B) - it will burn out altogether.
I understand that on the old A16 there was a severe shortage of GPIO due to the Ethernet interface, and the solution with auto-switching was justified. But here everything is different!!! You even have free GPIOs that are not used anywhere.
And I do not understand why it was impossible to use one of them for switching RS458 transmission or as an interrupt input for PCF8574.
In your opinion, these are trifles, but for many they significantly ruin life
I understand that on the old A16 there was a severe shortage of GPIO due to the Ethernet interface, and the solution with auto-switching was justified. But here everything is different!!! You even have free GPIOs that are not used anywhere.
And I do not understand why it was impossible to use one of them for switching RS458 transmission or as an interrupt input for PCF8574.
In your opinion, these are trifles, but for many they significantly ruin life