ESP32-C6 Super Mini
Posted: Tue Jan 20, 2026 12:30 am
Has anyone used this new product from Espressif Systems? I purchased three units from AliExpress that are TZT ESP32-C6 dev modules.
Despite trying several different boards in Arduino I cannot upload a sketch. The USB type C cable I am using works perfectly on ESP32 D1 modules so I am sure it's not the connection.
I have read the troubleshooting.html and have tried the Boot button but still cannot upload a sketch.
Here is what I get as an error:
Sketch uses 957058 bytes (73%) of program storage space. Maximum is 1310720 bytes.
Global variables use 40220 bytes (12%) of dynamic memory, leaving 287460 bytes for local variables. Maximum is 327680 bytes.
esptool v5.1.0
Serial port COM3:
Connecting...
A serial exception error occurred: Cannot configure port, something went wrong. Original message: PermissionError(13, 'A device attached to the system is not functioning.', None, 31)
Note: This error originates from pySerial. It is likely not a problem with esptool, but with the hardware connection or drivers.
For troubleshooting steps visit: https://docs.espressif.com/projects/esp ... oting.html
Connected to ESP32-C6 on COM3:
Chip type: ESP32-C6FH4 (QFN32) (revision v0.2)
Features: Wi-Fi 6, BT 5 (LE), IEEE802.15.4, Single Core + LP Core, 160MHz
Crystal frequency: 40MHz
USB mode: USB-Serial/JTAG
MAC: 58:e6:c5:ff:fe:18:cb:5c
BASE MAC: 58:e6:c5:18:cb:5c
MAC_EXT: ff:fe
Uploading stub flasher...
Running stub flasher...
Stub flasher running.
Hard resetting via RTS pin...
Failed uploading: uploading error: exit status 1
Despite trying several different boards in Arduino I cannot upload a sketch. The USB type C cable I am using works perfectly on ESP32 D1 modules so I am sure it's not the connection.
I have read the troubleshooting.html and have tried the Boot button but still cannot upload a sketch.
Here is what I get as an error:
Sketch uses 957058 bytes (73%) of program storage space. Maximum is 1310720 bytes.
Global variables use 40220 bytes (12%) of dynamic memory, leaving 287460 bytes for local variables. Maximum is 327680 bytes.
esptool v5.1.0
Serial port COM3:
Connecting...
A serial exception error occurred: Cannot configure port, something went wrong. Original message: PermissionError(13, 'A device attached to the system is not functioning.', None, 31)
Note: This error originates from pySerial. It is likely not a problem with esptool, but with the hardware connection or drivers.
For troubleshooting steps visit: https://docs.espressif.com/projects/esp ... oting.html
Connected to ESP32-C6 on COM3:
Chip type: ESP32-C6FH4 (QFN32) (revision v0.2)
Features: Wi-Fi 6, BT 5 (LE), IEEE802.15.4, Single Core + LP Core, 160MHz
Crystal frequency: 40MHz
USB mode: USB-Serial/JTAG
MAC: 58:e6:c5:ff:fe:18:cb:5c
BASE MAC: 58:e6:c5:18:cb:5c
MAC_EXT: ff:fe
Uploading stub flasher...
Running stub flasher...
Stub flasher running.
Hard resetting via RTS pin...
Failed uploading: uploading error: exit status 1