CutiePi – All-in-one Raspberry Pi tablet

Re:CutiePi – All-in-one Raspberry Pi tablet by opless on Thursday August 15, 2019 @08:19AM (#20704473)

I'm quite interested in how you integrate power management into the PI.

There's very little in the way of 'real' power management solutions for the PI and a myriad of 'power down when the battery is low' solutions ... is a decent, cheap, reliable fuel gauge hat just too much to ask for? :D

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Re:CutiePi – All-in-one Raspberry Pi tablet by penkia on Thursday August 15, 2019 @08:30AM (#20704551)

We're using the MCU to swtich power source between USB charging or battery, using it's ADC to serve as a voltage divider to get actual AD value from the battery, and a MP2636GR chip for charging and voltage step-up.

So yay battery percentage! ;-)

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Re:CutiePi – All-in-one Raspberry Pi tablet by opless on Thursday August 15, 2019 @10:57AM (#20705756)

How do you do the switching? Using a MOSFET or something else?

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Re:CutiePi – All-in-one Raspberry Pi tablet by aasasd on Thursday August 15, 2019 @12:17PM (#20706568)

Noob here, does this mean that Pi doesn't throttle down CPUs and other chippery? (I'd think that this is solved a long time ago between Linux and ARM, though.)

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