<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
Mark,<br>
<br>
in the thread with Patrick Stein I measured the GPS antenna at ~ 5
mA / 55 mW, and added that info to
<a class="moz-txt-link-freetext" href="https://docs.openvehicles.com/en/latest/userguide/warnings.html#average-power-usage">https://docs.openvehicles.com/en/latest/userguide/warnings.html#average-power-usage</a><br>
<br>
<blockquote type="cite">
<div class="section" id="module-version-3-3" style="box-sizing:
border-box; color: rgb(64, 64, 64); font-family: Lato,
proxima-nova, "Helvetica Neue", Arial, sans-serif;
font-size: 16px; font-style: normal; font-variant-ligatures:
normal; font-variant-caps: normal; font-weight: 400;
letter-spacing: normal; orphans: 2; text-align: start;
text-indent: 0px; text-transform: none; white-space: normal;
widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(252, 252, 252); text-decoration-thickness:
initial; text-decoration-style: initial; text-decoration-color:
initial;">
<p style="box-sizing: border-box; line-height: 24px; margin: 0px
0px 24px; font-size: 16px;"><strong style="box-sizing:
border-box; font-weight: bold;">GPS</strong><span> </span>consumption
includes the active GPS antenna, which accounts for ~ 5 mA /
55 mW. Antenna power cannot be switched by the module.</p>
<p style="box-sizing: border-box; line-height: 24px; margin: 0px
0px 24px; font-size: 16px;">ESP32<span> </span><strong
style="box-sizing: border-box; font-weight: bold;">deep
sleep mode</strong><span> </span>(e.g. triggered by the
power management module) reduces the consumption to ~ 15 mA /
165 mW with the active GPS antenna attached, or ~ 10 mA / 110
mW with the GPS antenna detached. The hardware isn’t capable
to go any lower than this.</p>
</div>
</blockquote>
<br>
But maybe you can do a more precise measurement, I only have some
basic electronics tools here.<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 31.01.23 um 01:53 schrieb Mark
Webb-Johnson:<br>
</div>
<blockquote type="cite"
cite="mid:D019376D-AEE6-41DE-8B7B-1F1F9BCB72A8@webb-johnson.net">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div><br>
</div>
<div>Re: <a href="https://www.openvehicles.com/node/3545"
moz-do-not-send="true" class="moz-txt-link-freetext">https://www.openvehicles.com/node/3545</a></div>
<div><br>
</div>
<div>I think it worthwhile having this discussion here. Synopsis
seems to be:</div>
<div><br>
</div>
<div>
<ol class="MailOutline">
<li>Our modem design uses the SIMCOM reference design to power
the active GPS antenna from VBAT. This increases power
consumption (powering the active antenna), even if the GPS
is turned off in software.<br>
<br>
</li>
<li>There is an alternative approach using pin 44 and the
AT+CVAUXV / AT+CVAUXS commands to enable/disable and/or
adjust voltage.</li>
</ol>
<div><br>
</div>
</div>
<div>Would be interesting to see the exact power readings and
impact this change would make. I will try to get these this
weekend.</div>
<div><br>
</div>
<div>Regards, Mark</div>
<div><br>
</div>
<div><br>
</div>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
OvmsDev mailing list
<a class="moz-txt-link-abbreviated" href="mailto:OvmsDev@lists.openvehicles.com">OvmsDev@lists.openvehicles.com</a>
<a class="moz-txt-link-freetext" href="http://lists.openvehicles.com/mailman/listinfo/ovmsdev">http://lists.openvehicles.com/mailman/listinfo/ovmsdev</a>
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26</pre>
</body>
</html>