PWRKEY
needs to be pressed for 6 seconds to turn off the board power supply, and pressPWRKEY
for 128 milliseconds to turn on the power supply. If you need to modify the power off pressing time, please refer toMinimalPowersExample
PMU
TS Pin
detection function needs to be turned off. By default, there is no NTC sensor on the board, so the TS Pin
detection needs to be disabled before the charging function can be used normally. If theTS Pin
detection function is not turned off, the PMU charging indicator will flash after the battery is inserted, and charging will be disabledVSYS
is the internal 5V boost output of the PMU, which can only be output but not input. Please do not connect an external power supply load greater than 500mA
DC5
power supply voltage can be adjusted, and the maximum output current should not exceed 1A
5.DC1
is the core power supply voltage, and the default output is 3.3V
. Please do not adjust the DC1
voltage through softwareBOOT
button on the board, and then insert the USB. At this time, you should be able to see the port in the device manager of the computer, and then click Upload Sketch againESP32S3
is closed incorrectly, please insert USB, and then press and hold the BOOT
button of the board, and then press and hold the PWRKEY
button. At this time, the board enters the download mode, and the sketch can be uploaded normallyON
, and then press the board PWR
for 2 seconds
. At this time, the board should start to work4.4~6V
. Please select an appropriate solar panel and set the maximum charging current as 500mA
GPIO45
and GPIO46
is idleT-SIM7080G
uses Octal SPI PSRAM
, so GPIO35~GPIO37 is unavailable. Please do not use these IOs