# ESP32C6 1N8 **URL:** \ **Category:** Q&A\ **Created:** [May 6, 2026, 5:33pm UTC](https://forum.digikey.com/t/esp32c6-1n8/68658 "2026-05-06T17:33:35Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![igunduz19](https://avatars.discourse-cdn.com/v4/letter/i/d9b06d/32.png) [@igunduz19](https://forum.digikey.com/u/igunduz19)\ **Post date:** [May 6, 2026, 5:33pm UTC](https://forum.digikey.com/t/esp32c6-1n8/68658/1 "2026-05-06T17:33:35Z")
I bought an ESP32C6 1N8, but I can’t connect it to my PC. When I connect it to the PC via the UART port, the PC detects it but we can’t establish communication; when I connect it via the USB port, the PC doesn’t detect the device. ---
**Author:** ![RobertCNelson](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/robertcnelson/32/12_2.png) [@RobertCNelson](https://forum.digikey.com/u/RobertCNelson)\ **Post date:** [May 6, 2026, 5:38pm UTC](https://forum.digikey.com/t/esp32c6-1n8/68658/2 "2026-05-06T17:38:51Z")
> [@igunduz19](#): > > ESP32C6 1N8 Please confirm which of the ESP32-C6 dev kits this is.. Do you have it plugged into an expansion board? You can manually force boot-loader mode by, holding down the BOOT button and press RESET, then release BOOT. Some of these have SiLabs usb uart translation… [CP210x USB to UART Bridge VCP Drivers - Silicon Labs](https://www.silabs.com/software-and-tools/usb-to-uart-bridge-vcp-drivers?tab=downloads) Regards, ---
**Author:** ![igunduz19](https://avatars.discourse-cdn.com/v4/letter/i/d9b06d/32.png) [@igunduz19](https://forum.digikey.com/u/igunduz19)\ **Post date:** [May 6, 2026, 5:50pm UTC](https://forum.digikey.com/t/esp32c6-1n8/68658/3 "2026-05-06T17:50:40Z")
Sketch uses 2489595 bytes (73%) of program storage space. Maximum is 3407872 bytes. Global variables use 85856 bytes (26%) of dynamic memory, leaving 241824 bytes for local variables. Maximum is 327680 bytes. esptool.py v4.8.1 Serial port COM4 A fatal error occurred: Could not open COM4, the port is busy or doesn’t exist. (could not open port ‘COM4’: FileNotFoundError(2, ‘Sistem belirtilen dosyay� bulam�yor.’, None, 2)) Hint: Check if the port is correct and ESP connected I tried what you suggested. I also reinstalled the CP2102 driver from scratch. I tried again: I held down the boot button and pressed the reset button as soon as the connection started, but it didn’t enter boot mode. I’m using Arduino IDE as my compiler, but I also installed the Espressif IDF to see the device; however, I can’t connect to the device at all. I purchased the device from Digi-Key. ---
**Author:** ![igunduz19](https://avatars.discourse-cdn.com/v4/letter/i/d9b06d/32.png) [@igunduz19](https://forum.digikey.com/u/igunduz19)\ **Post date:** [May 6, 2026, 5:51pm UTC](https://forum.digikey.com/t/esp32c6-1n8/68658/4 "2026-05-06T17:51:22Z")
[https://www.digikey.com/en/products/detail/espressif-systems/ESP32-C6-DEVKITC-1-N8/17728861](https://www.digikey.com/en/products/detail/espressif-systems/ESP32-C6-DEVKITC-1-N8/17728861) ---
**Author:** ![RobertCNelson](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/robertcnelson/32/12_2.png) [@RobertCNelson](https://forum.digikey.com/u/RobertCNelson)\ **Post date:** [May 6, 2026, 5:52pm UTC](https://forum.digikey.com/t/esp32c6-1n8/68658/5 "2026-05-06T17:52:52Z")
> [@igunduz19](#): > > Serial port COM4 > > A fatal error occurred: Could not open COM4, the port is busy or doesn’t exist. > (could not open port ‘COM4’: FileNotFoundError(2, ‘Sistem belirtilen dosyay� bulam�yor.’, None, 2)) In Windows Device Manager does this device show up as using COM4 uart? ![image](https://global.discourse-cdn.com/digikey/original/3X/9/9/996f58ee7e8f5240c1d24be665ffbcd4d46e7a9e.png) Also have tried a second usb cable, some are “charging” only.. Regards, ---
**Author:** ![igunduz19](https://avatars.discourse-cdn.com/v4/letter/i/d9b06d/32.png) [@igunduz19](https://forum.digikey.com/u/igunduz19)\ **Post date:** [May 6, 2026, 5:57pm UTC](https://forum.digikey.com/t/esp32c6-1n8/68658/6 "2026-05-06T17:57:36Z")
![image](https://global.discourse-cdn.com/digikey/original/3X/9/5/9564d795d73a4e2d44dd5bbad8668acb3e83196c.png) ![image](https://global.discourse-cdn.com/digikey/original/3X/5/1/515044d8229e89fe8360cee3d36737bfe79f3279.jpeg) ---
**Author:** ![RobertCNelson](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/robertcnelson/32/12_2.png) [@RobertCNelson](https://forum.digikey.com/u/RobertCNelson)\ **Post date:** [May 6, 2026, 6:01pm UTC](https://forum.digikey.com/t/esp32c6-1n8/68658/7 "2026-05-06T18:01:16Z")
Yeap, confirmed, it’s showing up at COM4 Is the “arduino” Serial Monitor open? that would take over COM4 from the flashing application.. Regards, ---
**Author:** ![igunduz19](https://avatars.discourse-cdn.com/v4/letter/i/d9b06d/32.png) [@igunduz19](https://forum.digikey.com/u/igunduz19)\ **Post date:** [May 7, 2026, 10:38am UTC](https://forum.digikey.com/t/esp32c6-1n8/68658/8 "2026-05-07T10:38:54Z")
![WhatsApp Image 2026-05-07 at 13.35.22](https://global.discourse-cdn.com/digikey/original/3X/1/6/164223fc62e2847579016f69f53311b103b50144.jpeg) What are the two short-circuited connectors on it, and what do they do? Once I short-circuited them, it started displaying data and responding to programming via the USB connector. ---
**Author:** ![RobertCNelson](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/robertcnelson/32/12_2.png) [@RobertCNelson](https://forum.digikey.com/u/RobertCNelson)\ **Post date:** [May 7, 2026, 12:48pm UTC](https://forum.digikey.com/t/esp32c6-1n8/68658/9 "2026-05-07T12:48:00Z")
Are you telling me as shipped that jumper isn’t installed? oh my! ![image](https://global.discourse-cdn.com/digikey/original/3X/0/b/0b6294dc246e7dfdc455986a215e0cac17e0d79c.jpeg) ![image](https://global.discourse-cdn.com/digikey/original/3X/7/3/731bb18fd4cc212c73e0c2327248eee04307d167.png) “for current measurement”… Well this is a good FAQ for this kit, install jumper!! @shawn_adams Love this text: ![image](https://global.discourse-cdn.com/digikey/original/3X/b/4/b4c4ca87d6dcb91c67a64fba4fa6e31f2ceae8c2.png) nope, they aren’t shipped installed… > **[ESP32-C6-DevKitC-1 v1.2 - ESP32-C6 - — esp-dev-kits latest documentation](https://docs.espressif.com/projects/esp-dev-kits/en/latest/esp32c6/esp32-c6-devkitc-1/user_guide.html)** Regards,