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NE Indiana | I tried my voltage shifter and it did not work for me. I might pursue the usb to serial option but will need to power the board separately have you have mentioned. How do you interpret the statement below from the Sparkfun hookup guide? Is the regulator only on the 5V USB or is it also on the 3V3 pin (which I believe is the "External" power feed pin for the board)?
"A 3.3V regulator is provided to regulate the 5V USB down to 3.3V the module requires. External 5V can be applied or a direct feed of 3.3V can be provided. Note that if you’re provide the board with 3.3V directly it should be a clean supply with minimal noise (less than 50mV VPP ripple is ideal for precision locating).
The 3.3V regulator is capable of sourcing 600mA from a 5V input and the USB C connection is capable of sourcing 2A."
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C099-f9p support Thread
