Help Connecting my ESP32 Dev1
Posted: Mon Sep 08, 2025 6:08 pm
I am new to this and I know it is probably a simple fix but when I try to upload a simple sketch to the esp32 I get this message.
Sketch uses 400263 bytes (30%) of program storage space. Maximum is 1310720 bytes.
Global variables use 40208 bytes (12%) of dynamic memory, leaving 287472 bytes for local variables. Maximum is 327680 bytes.
A fatal error occurred: Could not open /dev/cu.usbmodem1234561, the port is busy or doesn't exist.
([Errno 2] could not open port /dev/cu.usbmodem1234561: [Errno 2] No such file or directory: '/dev/cu.usbmodem1234561')
Hint: Check if the port is correct and ESP connected
esptool v5.0.0
Serial port /dev/cu.usbmodem1234561:
Failed uploading: uploading error: exit status 2
I have uploaded the drivers for the board, selected the port usbmodem, I have my usb c cable going to the com port. How do I fix this? Thanks
Sketch uses 400263 bytes (30%) of program storage space. Maximum is 1310720 bytes.
Global variables use 40208 bytes (12%) of dynamic memory, leaving 287472 bytes for local variables. Maximum is 327680 bytes.
A fatal error occurred: Could not open /dev/cu.usbmodem1234561, the port is busy or doesn't exist.
([Errno 2] could not open port /dev/cu.usbmodem1234561: [Errno 2] No such file or directory: '/dev/cu.usbmodem1234561')
Hint: Check if the port is correct and ESP connected
esptool v5.0.0
Serial port /dev/cu.usbmodem1234561:
Failed uploading: uploading error: exit status 2
I have uploaded the drivers for the board, selected the port usbmodem, I have my usb c cable going to the com port. How do I fix this? Thanks