Powering a standalone board
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GoingForGold
Dec 26, 2012, 7:53:39 AM12/26/12
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Hi there!
I want to make a standalone board with an arduino bootloader and your firmware for it. I don't have a problem setting up a barebones arduino, but there's one crucial point: how to power this thing (and which controller to choose). This all depends on how exactly the mesurements are made. I tried to understand the firmware, but found it a bit difficult to understand this uncommented piece of code ;).
Do you measure the supply voltage (using the internal 1.1V reference) and calculate the precise ADC reading? Does your formula allow to use the ATmega8, which has an internal 2.56v (instead of the 1.1v)?
Thank you!
I want to make a standalone board with an arduino bootloader and your firmware for it. I don't have a problem setting up a barebones arduino, but there's one crucial point: how to power this thing (and which controller to choose). This all depends on how exactly the mesurements are made. I tried to understand the firmware, but found it a bit difficult to understand this uncommented piece of code ;).
Do you measure the supply voltage (using the internal 1.1V reference) and calculate the precise ADC reading? Does your formula allow to use the ATmega8, which has an internal 2.56v (instead of the 1.1v)?
Thank you!
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