First off, thanks for the great kit. Got it together and working with very little issue, hardest part was tweaking the hinges on the Altoids tin so it closed securely .
On the FAQ you have a simple formula to calculate extra play time, could you show the complex formula?
Mainly looking for something that takes into account both Battery type ( voltage ), and mAh of the battery.
Ok, found a bit more, maybe I can figure this out ( And dust off those old brain cells, been a few years since high-school electronics ):
<Number of AAs> * <AA Voltage> * <AA mAh> * <Efficency>
Divided by:
<Device Battery Voltage> * <Device Battery mAh>
Complex charging formula?
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Please be positive and constructive with your questions and comments.
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yes, thats right. dont forget that the efficiency is related to drain and voltage so it can range between 70-90% i usually just say 80% also its not as much device battery voltage as 5V because there is a linear regulator that will turn the 5V into 4.2V to charge the battery (its almost -always- a lithium ion or polymer)
Please be positive and constructive with your questions and comments.