Arduino HIGH LOW

Question

I have an Arduino and I am wondering exactly what HIGH and LOW mean as far as actual values go... Are they signed ints? Unsigned ints? Unsigned chars??? What are their values? I

Answer 1

The first argument to digitalWrite() is a pin number.

The second argument to digitalWrite() will either:

1. write a HIGH (3.3 or 5 V) or LOW (0 V) to a BINARY OUTPUT or
2. enable (HIGH) or disable (LOW) the internal pullup on a BINARY INPUT.

Bitwise operations for either argument make no sense. Perhaps you need to use analogWite()?

See the documentation: digitalWrite() Constants