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RE: [N8VEM-S100:6643] S100 Breakout Board - Version 3
- To: <n8vem...@googlegroups.com>
- Subject: RE: [N8VEM-S100:6643] S100 Breakout Board - Version 3
- From: "Bob Bell" <bbel...@gmail.com>
- Date: Sun, 22 Mar 2015 16:37:07 -0400
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The Mullen TB-4 displays "H" for a solid high level, an "L" for a solid low level, an "O" for an open, tri-state or TTL 1/2 level, and "P" if it detected a pulse going either way. The polarity of the pulse is discerned by looking at the steady state level. For example, if I see it displaying "L" and then there is a momentary (it lasts about 1/2 second) "P", I know it just detected a high-going pulse.
Bob Bell
-----Original Message-----
From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of John Monahan
Sent: Sunday, March 22, 2015 2:44 PM
To: n8vem...@googlegroups.com
Subject: RE: [N8VEM-S100:6643] S100 Breakout Board - Version 3
Or Red/Green dual color LED's. BTW, the High->Low or Low->High nature of a pulse is very useful
John
-----Original Message-----
From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of yoda
Sent: Sunday, March 22, 2015 11:11 AM
To: n8vem...@googlegroups.com
Subject: [N8VEM-S100:6643] S100 Breakout Board - Version 3
Seems a little overkill to use 7 segment displays here. Why not use DIP LED bars and you could have more test points and of course as John said you will need to stretch the inputs.
Dave
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