New to using buffers for pin protections

Projects General Guidance
1

I need to signal a normally closed solenoid to remain open for an extended (10 seconds or so) period of time.

Would doing so with a digitalWrite(pinX, HIGH) damage the pin?

2

Without a buffer? Almost certainly.

(This isn't a programming question)

3

Got it. I'll ask in the hardware section.

4

Is there a guide on how to use buffers for pin protection against time-extensive digitalwrite(x, HIGH)?

5

You already have an answer in your identical post.

6

Topics merged.

7

The length of time that an output is HIGH is not a concern, the problem with driving a solenoid is that it generally requires much more current to operate than can be safely supplied by an output, as well as other concerns caused by switching a highly inductive load.