Dendrobatus Azureus<p>The Broadcom Wi-Fi Integrated Circuit in the Raspberry Pi5, proves something that we have known from the ATX PSU {power supply units} for years. When such a system is powered off significant parts of it are still drawing current. </p><p>In my experimentations with the system, where the power supply circuit runs in a similar fashion as the legacy ATX systems, I had powered it off after having run the SBC without active cooling. The Raspberry Pi5 is a robust machine, that can run without any active cooling. The temperature difference is on such a level that is totally within the tolerances of the Integrated Circuits in the SBC.<br>Over here it operates @ 60+° C. The idle temperature is of course lower.</p><p>With a soft power off, the Broadcom Wi-Fi IC still remains warm to the touch, even after a couple of hours. This is also the IC which receives an Aluminum cooling block when you buy a official Raspberry Pi case for your SBC</p><p>This temperature is a warning for you not to mess with components that need a total power down when you need to work on the machine.</p><p>^Z</p><p><a href="https://mastodon.bsd.cafe/tags/SBC" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SBC</span></a> <a href="https://mastodon.bsd.cafe/tags/ARM" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ARM</span></a> <a href="https://mastodon.bsd.cafe/tags/Pie" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Pie</span></a> <a href="https://mastodon.bsd.cafe/tags/Raspberry" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Raspberry</span></a> <a href="https://mastodon.bsd.cafe/tags/GPIO" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GPIO</span></a> <a href="https://mastodon.bsd.cafe/tags/Broadcom" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Broadcom</span></a> <a href="https://mastodon.bsd.cafe/tags/WiFi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WiFi</span></a> <a href="https://mastodon.bsd.cafe/tags/Electronics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Electronics</span></a> <a href="https://mastodon.bsd.cafe/tags/Heat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Heat</span></a></p>