ESP32-S3-MINI-1U - safe GPIO choices?
Posted: Sat Nov 23, 2024 12:17 pm
Okay this is my first try in making a custom board with ESP32. (Or any IC for that matter)
I'm using the S3-MINI-1U and I'm a little unsure about which GPIOs are best to use and which need to be left alone.
Also I'm unsure if I missed something cruzial to make it work correctly?
Here my first setup (see image)
EN + GPIO0 : pullup resistor and reset buttons to ground.
RX/TX : to UART connector (RX also connected to MIDI interface )
Analog inputs
GPIO4 : Pushbutton
GPIO6 : Pushbutton
GPIO8 : Potentiometer
GPIO10: Voltage Measurer (VCC in divided down to max 3V)
SPI
GPIO48 : SPI CLock
GPIO38 : SDI
GPIO13-18 : Chip Select (x6)
Other outputs
GPIO26 : LED
GPIO33 : LED
GPIO35 : Relay control out
I'm using the S3-MINI-1U and I'm a little unsure about which GPIOs are best to use and which need to be left alone.
Also I'm unsure if I missed something cruzial to make it work correctly?
Here my first setup (see image)
EN + GPIO0 : pullup resistor and reset buttons to ground.
RX/TX : to UART connector (RX also connected to MIDI interface )
Analog inputs
GPIO4 : Pushbutton
GPIO6 : Pushbutton
GPIO8 : Potentiometer
GPIO10: Voltage Measurer (VCC in divided down to max 3V)
SPI
GPIO48 : SPI CLock
GPIO38 : SDI
GPIO13-18 : Chip Select (x6)
Other outputs
GPIO26 : LED
GPIO33 : LED
GPIO35 : Relay control out