Can I check if there is USB / 5V present? What is the VBUS sense?
Most UM Development boards have an IO connected to a voltage divider on the 5V power rail that you can...
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Can I switch between CircuitPython, MicroPython, IDF or even Arduino IDE?
You can switch between each development environment, but each time you will need to put your board into download mode... -
Devices powered from the 2nd LDO power down when the ESP32 goes into deep sleep
That’s correct! LDO 2 is tied to both a user controllable IO and VDD for the Flash/PSRAM, so when the... -
How do I read the battery voltage?
Each of the boards has an IO connected to a voltage divider on the battery to be able to read... -
On the pinout cards, some IO are listed as strapping pins. What does that mean?
A strapping pin is a pin/IO that is used by the ESP32 during it’s boot up cycle to set certain... -
RX & TX pins are not coupled with the internal USB, what are they used for?
RX & TX are still connected to UART0 during the ESP32 boot-up process and will output (and accept input) during... -
The ORANGE charge LED blinks when no battery is connected
That is the correct behaviour! The charge IC can’t tell the difference between a full battery and no battery, so... -
The RED power LED doesn’t light up when running off battery
That is by design! The power and charge LEDs and corresponding resistors drain the battery, so they’ve been isolated to... -
What does the EN pin on the header do?
The EN pin exposed on the headers of some Unexpected Maker boards, is tied to the 3V3 LDO on the... -
What voltage range can the 5V pin accept and is it an input and output?
The 5V pin on your board is an in and out pin. As an input, it will accept a voltage...