Minty Boost Input

Ideas and questions about MintyBoost kits

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chrissinser
 
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Joined: Tue Apr 16, 2013 2:40 pm

Minty Boost Input

Post by chrissinser »

Does anyone know what is the minimum amount of volts that MintyBoost can intake to boost it up to the required amount of volts to be recognized by the USB hub in order to charge a phone?

I'm working on a project that intakes mechanical energy via a crank mechanism that stores the energy on 2 AA NiCal rechargeable batteries, that will then power MintyBoost, to charge a cell phone. I measured the incoming voltage from the mechanical crank and it reads a max output of 3v, with a loss of 0.7v over a diode that directs the current towards the 2 rechargeable batteries. Would the 2.3v be too weak of a current to power MintyBoost?

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adafruit_support_bill
 
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Re: Minty Boost Input

Post by adafruit_support_bill »

Would the 2.3v be too weak of a current to power MintyBoost?
Current is measured in amps (or milli-amps), not volts. You need both current and voltage to power a circuit.
The answer can be found in chart below from the tutorial. But you need to know how how many milli-amps your phone needs to charge and how many milli-amps your 2.3v source is capable of supplying.

http://www.ladyada.net/make/mintyboost/process.html
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