Thank everyone for the advice.
Following the advice, I added a larger pullup but that did not change the
behavior. I also switched the E-Stop button from making a connection to
ground to breaking a connection from ground. That also did not change the
behavior.
I did finally figure out what was
On Saturday 20 February 2010 04:39:59 Flying Electron wrote:
Hi,
I was using one of the inputs to read my E-STOP button which shorts to
ground when triggered, but I kept on getting false positives. I looked
at the input pin in halscope and saw a square wave that goes high for
2ms then
The AnyIO boards already have 10K pull-up resistors on the input pins.
--
Sebastian Kuzminsky
never be discouraged
just let your nerdy flourish
-Original Message-
From: Michael Buesch m...@bu3sch.de
Subj: Re: [Emc-users] 7i43 GPIO Input Question
Date: Sat 2010 Feb 20 4:55
Size: 1K
You really should not use a 'make' button' on E-stop or critical switches
like limit travels.
Since they are seldom used, the chances of a contact problem increase over
time.
Use a 'press to break', and so the switch is always under test. If it fails,
you are still safe.
Sounds like you'll also
Flying Electron wrote:
Hi,
I was using one of the inputs to read my E-STOP button which shorts to
ground when triggered, but I kept on getting false positives. I looked
at the input pin in halscope and saw a square wave that goes high for
2ms then low for 2ms and repeats. I removed the
