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Full Discussion: USB Circuit Question
Homework and Emergencies Homework & Coursework Questions USB Circuit Question Post 302491110 by bkhusky on Wednesday 26th of January 2011 05:38:33 PM
Old 01-26-2011
USB Circuit Question

My problem is I need to control a 7 segment LED circuit (currently on a breadboard, eventually on a PCB). The only option I have from my PC is through USB. The circuit I have built on a breadboard uses 7 segment LED's and 4206 decade counters. I have cut a USB cable in half, and am using the positive and negative leads to power the circuit. I have made multiple attemps at controlling the circuit through the D+ and D- leads, but have failed so far. Basically all I need to do is control the clock input to the 4206 decade counter.


I have made multiple attemps at controlling the circuit through the D+ and D- leads, but have failed so far.

Does anybody know if this is even possible using the D+ and D- leads from the USB? I will eventually attempt to control it through bash script, but don't want to waste my time trying to develop a driver for this circuit if I will not be able to control it.

University of Alabama
Kenneth Ricks
ECE 494 - Capstone Design II (URL's not allowed due to my post count)
 

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2004-04-16

      mailping

      0.0.4

MAILPING-SUCCESS(1)						     Mailping						       MAILPING-SUCCESS(1)

NAME
mailping-success - Munin plugin to graph time since last mail delivery SYNOPSIS
/usr/share/mailping/munin-plugins/mailping-success {[config] | ['']} DESCRIPTION
mailping-success is a Munin plugin that monitors time passed since last successful email probe. Configuration output When passed config, it outputs Munin configuration information. If there are no circuits defined (no subdirectories in /etc/mailping), it specifies that Munin should draw no graph either. If configuration files /etc/mailping/circuit/warntime and /etc/mailping/circuit/failtime exist, the values in them are passed on to Munin, for use in Nagios alert integration. Value output When passed an empty string '', mailping-success outputs the difference between current time and last successful probe, for each configured circuit. FILES
/etc/mailping/ List of circuits that exist; each subdirectory is a circuit. /etc/mailping/circuit/warntime If more than this many seconds have passed since last successful probe, a Nagios warning is triggered by Munin (assuming it has been configured to do that). Default: no warnings. /etc/mailping/circuit/failtime If more than this many seconds have passed since last successful probe, a Nagios alert is triggered by Munin (assuming it has been configured to do that). Default: no alerts. /var/lib/mailping/state/circuit/success Timestamp in seconds of the last successful probe for circuit. ENVIRONMENT
MAILPING_CONFIGDIR Override the location of the configuration directory. Default: /etc/mailping MAILPING_STATEDIR Override the location of the state directory. Circuit states are stored in the state subdirectory of this directory, in subdirectories named after the circuit name. Default: /var/lib/mailping SEE ALSO
mailping-latency(1), mailping-cron(1), mailping-store(1), munin-run(8), munin-node(8) AUTHOR
Tommi Virtanen <tv@havoc.fi> Havoc Consulting Author. COPYRIGHT
Copyright (C) 2004 Havoc Consulting mailping 0. 2004-04-16 MAILPING-SUCCESS(1)
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