- Restarted VIM2 SBC, to reset the uptime counter.
- Mounted a Tone Board to the top of the VIM2.
- Looped a 1080P video for 1 hour.
Results:
- System Uptime: 1 Hour
- CPU Internal Temperature: 73.8C
- Toneboard Surface Temperature: 57.2C
Notes:
- 73.8C is still within spec of the SoC, which puts max temperature at 105C.
- Temperature increase is most likely caused by the disruption of convective airflow above the heatsink, as the Toneboard is mounted above the heatsink.
Solutions:
- Most obvious would be to add forced-air-flow, rather than relying on passive convection, to carry heat away from the SoC.
- Another solution would be to break-out the plastic plate on the bottom of your DIY Case, and install a thermal-pad to thermally-couple the SBC with the metal plate at the bottom of the case. Then the case itself should ideally be placed on a thermally conductive surface, or surface with sufficient mass to absorb the heat.