![Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow](https://i.stack.imgur.com/PCjNG.png)
Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow
![arduino - Trouble connecting the STM32 blue pill - Cannot open COM3 port error - Electrical Engineering Stack Exchange arduino - Trouble connecting the STM32 blue pill - Cannot open COM3 port error - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/Fm9Te.png)
arduino - Trouble connecting the STM32 blue pill - Cannot open COM3 port error - Electrical Engineering Stack Exchange
![I can't connect to Betaflight Configurator, I don't get the COM3 option. Do these beebs and flashing leds tell me why? Any ideas what to try next? (GepRC Gep-12A AIO FC + I can't connect to Betaflight Configurator, I don't get the COM3 option. Do these beebs and flashing leds tell me why? Any ideas what to try next? (GepRC Gep-12A AIO FC +](https://external-preview.redd.it/43RHWvLnhlLlHPiwyFR06mWlmFEPMFERq4Vt5wsb8Gg.png?format=pjpg&auto=webp&s=afd640c419fef31b17dcc91ab8e544b890fe43a2)
I can't connect to Betaflight Configurator, I don't get the COM3 option. Do these beebs and flashing leds tell me why? Any ideas what to try next? (GepRC Gep-12A AIO FC +
![Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow](https://i.stack.imgur.com/cx8c7.png)
Arduino Nano - "avrdude: ser_open():system can't open device "\\.\COM1": the system cannot find the file specified" - Stack Overflow
![STE-6104C-T-V2 - 4-Port Industrial Serial RS232/422/485 to Ethernet Device Server, with Dual LAN; EOT: -40°C to 85°C; Version 2 Hardware | Antaira Asia STE-6104C-T-V2 - 4-Port Industrial Serial RS232/422/485 to Ethernet Device Server, with Dual LAN; EOT: -40°C to 85°C; Version 2 Hardware | Antaira Asia](https://www.antaira.com.tw/img/product/Antaira_STE-6104C-T-V2_img02.jpeg)
STE-6104C-T-V2 - 4-Port Industrial Serial RS232/422/485 to Ethernet Device Server, with Dual LAN; EOT: -40°C to 85°C; Version 2 Hardware | Antaira Asia
![Lcc Q1000 Industrijski Daljinski Upravljač 10-dugme односкоростная Vitlo Bežični Daljinski Upravljač 380 V 24 V 48 220 тракторный Dizalica Na rasprodaji! ~ Rasvjeta Pribor / www.glamourlashes.com.hr Lcc Q1000 Industrijski Daljinski Upravljač 10-dugme односкоростная Vitlo Bežični Daljinski Upravljač 380 V 24 V 48 220 тракторный Dizalica Na rasprodaji! ~ Rasvjeta Pribor / www.glamourlashes.com.hr](https://www.glamourlashes.com.hr/content/52417-2-Lcc-q1000-industrijski-daljinski-upravlja%C4%8D-10-dugme.jpeg)
Lcc Q1000 Industrijski Daljinski Upravljač 10-dugme односкоростная Vitlo Bežični Daljinski Upravljač 380 V 24 V 48 220 тракторный Dizalica Na rasprodaji! ~ Rasvjeta Pribor / www.glamourlashes.com.hr
NUS School of Computing - Whatcha think of our new COM3 building? 🤩 🏢 Tell us in the comments below! It's still a work in progress, but we can't wait to explore
![I'm having the (Uploading error: Error:avrdude: ser_open(): can't set com-state) problem with my cinese Arduino nano : r/arduino I'm having the (Uploading error: Error:avrdude: ser_open(): can't set com-state) problem with my cinese Arduino nano : r/arduino](https://preview.redd.it/im-having-the-uploading-error-error-avrdude-ser-open-cant-v0-ye9m6tl5i4ya1.png?width=640&crop=smart&auto=webp&s=9cca869a86e78c069402622bc98a43aee310c23b)
I'm having the (Uploading error: Error:avrdude: ser_open(): can't set com-state) problem with my cinese Arduino nano : r/arduino
![ESP32 & could not open port 'COM5': PermissionError(13, 'Access is denied.', None, 5) - espressif32 - PlatformIO Community ESP32 & could not open port 'COM5': PermissionError(13, 'Access is denied.', None, 5) - espressif32 - PlatformIO Community](https://community.platformio.org/uploads/default/original/2X/5/5274b3594ce67a69c4e18e17542bb48628341be8.png)
ESP32 & could not open port 'COM5': PermissionError(13, 'Access is denied.', None, 5) - espressif32 - PlatformIO Community
![Uploading error: Error:avrdude: ser_open(): can't set com-state for "\\.\ COM3" - IDE 1.x - Arduino Forum Uploading error: Error:avrdude: ser_open(): can't set com-state for "\\.\ COM3" - IDE 1.x - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/d/c/2/dc29648497533da38218cd3ba13d515c9e7233a3.png)
Uploading error: Error:avrdude: ser_open(): can't set com-state for "\\.\ COM3" - IDE 1.x - Arduino Forum
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