Portable power

FREE-WILi 2 was designed from the start to be a portable tool. At the heart of its power system sits a dedicated ultra-low-power (ULP) micro-controller (MCU) that controls 17 independent power zones. The ULP to can dynamically bring zones up or down depending on what’s actually needed at any moment. Every miliamp matters - this MCU can sleep with single digit microamp currents and run at under 100 microamps.

A good example is the LinuxCM0, this high power 64 bit CPU is greate when you need it - but it can drain more than 1.5Amps at full load. This would result in a dissappoint battery life of a few hours. With power management we can power Linux only when needed.

The battery has 3000 mAh of power. The ULP micro also manages charging, intelligently getting the most out of whatever USB power source is connected. Sensors tie directly into the ULP as well, so they can act as wake-up sources — keeping the board in a low-power sleep state until real-world conditions demand attention.