VoCore Forum

I am trying to reduce the power usage and heat for a specific applications. I am only using one of the ethernet ports, and no wifi. Also, I am trying to reduce the CPU clock so it only does what I need.

In this forum there is information about how to do it:
mmio 0x1000003c 0x03040201

Is the mems command (included in the firmware) and mmio the same? It doesn't seem to be working.

I also tried this blog entry:
http://vonger.cn/?p=1880

Turning off all the unused ethernet ports. I don't really see any decrease in current.

I am exploring a couple more possibilities and maybe somebody has already tried it:

1. Using a lower input voltage than 5V. Would that reduce heat?
2. Using ffmpeg instead of mjpeg_streamer. ffmpeg might be lighter considering the lack of a web server.

That register is for old vocore version with RT5350 core, can not use for vocore2.
in firmware we have a command named mem inside.

Thanks for the answer. Has anyone figured way the way to lower down the power consumption in the vocore2? (turning off unused ports, or lowering down the clock)

Actually in datasheet, system control part, there are many register, you can try to turn off them one by one by mem command (or devmem)

I did some tests about this. The PHYs of the unused ethernet ports are actually disabled by default, so I am not sure if there is anything else that we can save there.

I haven't found a way to lower down the clock.

Going back to this.

I have like many different vocores v2 that I am using with cameras and leds. I wrote a program that will control the intensity of the leds based on the temperature of a board where the vocore is mounted.

I found that when the temperature reaches 55 degrees, some boards lose ethernet connection. Some boards will lose ethernet connection at lower temperatures, like 51-52 degrees.

The best scenario would be to reduce the heat on the vocore itself, but I haven't found a way to do this. The second best scenario would be identifying what's causing the connection drop in ethernet at such low temperatures.

Any help / commetn would be appreciated.

call wifi off to reduce a lot of power usage. Or directly disable wifi in /etc/config/wireless.
Without wifi, power consume is less than 0.5watt. With wifi around 0.7~0.8watt.