I'm trying to integrate an ESP32-PICO-KIT/V4.1. into a small project.
The documentation for the PICO power supply says this:
There are three mutually exclusive ways to provide power to the board:
1) Micro USB port, default power supply
2) 5V / GND header pins
3) 3V3 / GND header pins
The power supply must be provided using one and only one of the options above, otherwise the board and/or the power supply source can be damaged.
I have chosen to power the board with a 3.3V supply coming from a linear regulator. The PICO board has two pins for 3.3V, and I have connected each one to the 3.3V Vout leg of the regulator. I've also connected a 0.1uF capacitor next to each 3.3V pin.
My question is about the 5V pin on the PICO. It will not be used. Should I leave it unconnected, tie it with a large pull down to ground, or do something else? It's not an input pin so I'm not sure what to do.