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Unread 05-01-2016, 22:59
Jeremy Germita's Avatar
Jeremy Germita Jeremy Germita is offline
Co-Advisor/Lead Engineering Mentor
AKA: wood is good. plastic is fantastic.
FRC #5012 (Gryffingear) / (Antelope Valley FIRST Teams)
Team Role: Coach
 
Join Date: Jan 2010
Rookie Year: 2007
Location: Lancaster, CA
Posts: 282
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Re: Intermittent WiFi Communication Issues

What band have you configured your AP to use? There tends to be a lot of interference on the 2.4GHz channels. This can often cause intermittent connection and high ping times if your access point is also in the 2.4GHz range.

If you have access to an Android device, I highly recommend downloading the app WiFi Analyzer(I haven't quite checked to see if there is an alternative for iOS). You can view wireless channel usage around the phone. Very useful for debugging wireless issues. If your robot AP is sharing a channel with other APs in the area, I recommend finding the least populated channel and setting your AP to use that.

The 5GHz band is usually a lot cleaner, so if you have access to a 5GHz capable computer for your driver station, you will probably see improved connection performance.

On the hardware side of things, I recommend checking all electrical connections that power the AP and the roborio. Does your robot lose connection while standing still or does it have to move before losing comms? If the latter, I'd bet on a faulty electrical connection being the culprit.
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Drive Coach Team 5012 Gryffingear / Antelope Valley FIRST teams / EWCP - (2013 - Current)
Student / Driver / Programmer / CAD - FRC Team 399: Eagle Robotics / FTC Team 72: GarageBots - (2009 - 2013)
Los Angeles Region FTC FTA/CSA/Head Ref
[FF] FIRST Pick
2014 FTC Los Angeles Regional Compass Award Winner.

2017 - Sacramento Regional / Las Vegas Regional
2016 - Los Angeles Regional Creativity + Winners (1197, 987, 5012) / Las Vegas Regional Team Spirit + SF (5012, 5851, 5049) / Galileo Subdivision
2015 - Inland Empire QF (597, 5012, 4413) / Las Vegas Imagery + Winners (148, 987, 5012) / Newton Subdivision and World Champions (118, 1678, 1671, 5012)
2014 - Inland Empire Rookie All Star + Highest Rookie Seed + SF (2339, 1967, 5012) / Las Vegas Rookie All Star / Galileo Division Imagery
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