Floating inputs?

Archiver · 2001-03-29 15:58

As someone previously stated, the 5V inputs to my Alarm System might be "floating" due to not being grounded. I was hoping you all could look at my wiring schematic and tell me what it is you think i could do to fix this.

I am using a momentary "OFF" switch that allows 5V to flow through it when the button is not pushed. The 5V is entering the sensor and flowing out into the PIC to read as a "1". I am getting weird results, like when sensor # 8 goes off, the it tells me that it was #6. weird. Thanks in advance.

Archiver · 2001-03-29 21:10

All of the examples in the stamp documentation use voltage dividers of
some kind to tie both ground and +5 (with different resistances) to the
input pin. You might want to try this.

On Thu, 29 Mar 2001, wtterrell wrote:

[noparse][[/noparse]NON-Text Body part not included]

Sean T. Lamont, CTO / Chief NetNerd, Abstract Software, Inc. (ServNet)
Seattle - Bellingham - Vancouver - Portland - Everett - Tacoma - Bremerton
email: lamont@a... WWW: http://www.serv.net
"...There's no moral, it's just a lot of stuff that happens". - H. Simpson

Archiver · 2001-03-29 23:22

When you push the button, the Stamp pin is floating. Just connect a 1k to
10K resistor from the Stamp pin to gnd.

Ray McArthur

****************
As someone previously stated, the 5V inputs to my Alarm System might be
"floating" due to not being grounded. I was hoping you all could look at my
wiring schematic and tell me what it is you think i could do to fix this.

I am using a momentary "OFF" switch that allows 5V to flow through it when
the button is not pushed. The 5V is entering the sensor and flowing out into
the PIC to read as a "1". I am getting weird results, like when sensor # 8
goes off, the it tells me that it was #6. weird. Thanks in advance.

Archiver · 2001-03-30 06:41

PLEASE AVOID SENDING LARGE FILES!!! I had lot of problems downloading
my email...

Thursday, March 29, 2001, 9:58:29 AM, you wrote:

w> As someone previously stated, the 5V inputs to my Alarm System might be
"floating" due to not being grounded. I was hoping you all could look at my
wiring schematic and tell me what it is you
w> think i could do to fix this.

w> I am using a momentary "OFF" switch that allows 5V to flow through it when
the button is not pushed. The 5V is entering the sensor and flowing out into the
PIC to read as a "1". I am getting weird
w> results, like when sensor # 8 goes off, the it tells me that it was #6.
weird. Thanks in advance.

Best regards,
Kalun mailto:klnlau@v...

Floating inputs?

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