<meta http-equiv="content-type" content="text/html; charset=utf-8">Richard, here's a partial log using panelpwr from a charge using the latest firmware. Unfortunately today is pretty cloudy here, so it wasn't the best day for solar panel testing. Hope it's useful in some way.<div>
<br></div><div>Regards,</div><div>Ismael</div><br><div class="gmail_quote">2011/4/7 Richard A. Smith <span dir="ltr"><<a href="mailto:richard@laptop.org">richard@laptop.org</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im">On 04/06/2011 03:18 PM, Ismael Schinca wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hey Richard! Here's a log from a partial battery charge in the following<br>
conditions:<br>
<br>
- XO 1.5HS using the firmware you sent<br>
- Connected to an unregulated 10W panel<br>
- Using the script rtcwake-log you sent I think it was from december<br>
last year<br>
</blockquote>
<br></div>
Thanks. Your logs look good. FYI. I have a new version of that called panelpwr-log. You should use that rather than rtcwake-log<br>
<br>
<a href="http://dev.laptop.org/~rsmith/power/panelpwr-log" target="_blank">http://dev.laptop.org/~rsmith/power/panelpwr-log</a><div class="im"><br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Quick comments:<br>
- The XO charging light was always on with the panel conected, even with<br>
very low light.<br>
</blockquote>
<br></div>
Yes. This is expected. Its trying very hard to charge (since the panel has voltage) but there just isn't any power.<div class="im"><br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
- When the battery was full, the XO started doing that buzzing sound,<br>
like when it works with a low voltage, only this time it was louder than<br>
in that situation. I'm guessing maybe as the battery wasn't charging the<br>
panel reached close to open circuit voltage and there was some pretty<br>
heavy regulation going on?<br>
</blockquote>
<br></div>
Sort of. I disabled the mppt when the battery was full which means that the panel will get pulled down and the switcher will start to oscillate. You hear the oscillations. My latest version does not disable mppt when the battery is full. This should fix that.<div class="im">
<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Just from this one, I would say that the firmware worked great! It's a<br>
pitty I cannot verify with hard numbers the MPPT function.<br>
</blockquote>
<br></div>
Thanks for your testing. Can you give q3a62e a spin with the new panel-pwr log? That would be useful info for me.<br><font color="#888888">
<br>
-- <br></font><div><div></div><div class="h5">
Richard A. Smith <<a href="mailto:richard@laptop.org" target="_blank">richard@laptop.org</a>><br>
One Laptop per Child<br>
</div></div></blockquote></div><br><br clear="all"><br>-- <br>Ismael Schinca<br>Centro Ceibal - Depto. Técnico - I+D<br>Avda. Italia 6201 - Edificio Los Ceibos<br>Montevideo - Uruguay.<br>Tel.: 2601 57 73 Int. 2232<br><br>