Senior Member
Joined: 15/09/2014
Location: United StatesPosts: 209
| Posted: 05:39pm 01 Jun 2017 |
Hi Grogster;
That begs the question:
Since the weak pull up is 60K and the RF Module is outputting 0V
the PIN(26) should see about 0.176V.
Clearly this would still look like a low.
Something else besides the 60K pull up is not right.
The 60K shouldn't have any effect at all.
Since the 60K does have an effect something is on the harry edge.
I bet the RF module is not pulling its output to 0V.
Maybe a lot higher.
Is the RF Module ground directly connector to the uMITE ground?
OK, the spec says the thresholds are 25% and 75% of 3.3V.
But seriously, I've never seen any pin that didn't switch more
than a few % away from 50% or about 1.65V.
redrok AD0TJ