Hello!I've heard that these components on the Arduino board is most power consuming:- USB Interface Chip- 5V voltage regulatorWhen the Arduino runs on battery power (e.g. 4 AA batteries directly into 5V and GND pins, or 9V battery into DC power jack), is the USB Interface Chip wasting energy? If it is, how can I disable it? I looked at Atmel datasheet, and don't understand all the clk_io abbrevations, and how to manipulate them. Also, what does the USB chip do, anyway?Thanks!
I guess it only "wastes energy" if you have no use for what it does
4xAA cells is a bit much, absolute maximum voltage for the ATmega328P is 5.5V.
Will this disable the serial chip from using battery power?
Quote4xAA cells is a bit much, absolute maximum voltage for the ATmega328P is 5.5V.4 NiMH rechargable batteries are 1.2V each. Combining them would make 4.75V (some voltage is lost through connecting batteries in series.) Is that okay? Mixing NiMH and non-rechargeable batteries will damage them, right?
Code: [Select]power_spi_disable();power_twi_disable();Will this disable the serial chip from using battery power? I need to use my multimeter when I have time.
...or 9V battery into DC power jack), is the USB Interface Chip wasting energy?
The absolute max voltage for the Arduino is actually 6.0V, 5.5V is the maximum recommended operating voltage, so 4 NiMH are just inside that and won't risk getting to the abs max at all.