Jetson/Jetson TK1 Power
Limiting power use
Note: Debugfs and non-upstream sysfs nodes aren't guaranteed to remain unchanged in future releases.
Reducing power if display isn't required
echo -1 > /sys/kernel/debug/tegra_hdmi/hotplug echo 4 > /sys/class/graphics/fb0/blank
Restricting to low-power core only
Restricting the CPU to the low power companion core can significantly reduce peak power (if running on a power-limited battery pack, for example), though at lower performance. As root:
echo 0 > /sys/devices/system/cpu/cpuquiet/tegra_cpuquiet/enable echo LP > /sys/kernel/cluster/active
Powering with a battery
Both of these step-up converters will work either from a USB battery or directly off a LiPo battery. Note that most USB batteries can only produce 5V@2.1A ~= 10W at best, which is less than the TK1 draws at max power consumption.