Man in a van wrote: > > and got 82.0 C :rolleyes: >
Presumably it was throttling at that stage, or was it just a quick temperature spike? I keep reading that a heatsink or fan is not needed for the safety of the RPi, because the throttling is the failsafe. My impression is that pCP running just LMS and Squeezelite isn't going to load the 4B enough to cause throttling. But if something else causes the temperature to spike and cause throttling, my guess is that that wouldn't have very much effect on LMS, given that it isn't a heavy load. I implemented the longer brass stand-offs to create a bit of space around the CPU. I went for three 11mm lengths rather than 4 as in my earlier photo. [image: http://www.cjh.me.uk/MyPhotobucket/cache/DIYHifi/RPi%20Board/Long%20brass%20stand-offs%203_640.jpg] This has dropped the temperature by 2-3 degrees. The key seems to be the extra airflow. My small heatsink is arranged so that the fins are vertical, so that air flows between the fins. The ribbon cable still blocks the airflow a bit, but it's improved with the longer stand-offs. And hopefully when those stand-offs connect to a big 10mm aluminium front panel that will help a bit too. The extra space would allow me to fit a fan or a bigger heatsink. A bigger heatsink provides extra thermal mass, so can absorb more heat energy and smooth out short spikes in temperature. But unless it also benefits from extra airflow then it won't necessarily do much to control temperature in the longer term - once it heats up the benefit is lost unless it can also be cooled. So my aim is to search for a heatsink that has a greater area than the CPU area, i.e. so that it presents a wider profile to the rising airflow and benefits from more of that airflow. The extra space also allows me to consider some kind of direct thermal connection to the amplifier chassis. I'm going to experiment with some folded-over aluminium foil to act as a thermal bridge. ------------------------------------------------------------------------ chill's Profile: http://forums.slimdevices.com/member.php?userid=10839 View this thread: http://forums.slimdevices.com/showthread.php?t=110690 _______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/discuss
