![Mac Error: Cannot open serial port, please make sure you have your radio connected - APM Planner 2.0 - ArduPilot Discourse Mac Error: Cannot open serial port, please make sure you have your radio connected - APM Planner 2.0 - ArduPilot Discourse](https://discuss.ardupilot.org/uploads/default/original/2X/4/45a1f030017f2cdfbc58fc39a3dee6710960f7c0.png)
Mac Error: Cannot open serial port, please make sure you have your radio connected - APM Planner 2.0 - ArduPilot Discourse
![Connect to a device over Serial COM Port on Windows 10 with WSL1 TTY devices with Windows Terminal and minicom - Scott Hanselman's Blog Connect to a device over Serial COM Port on Windows 10 with WSL1 TTY devices with Windows Terminal and minicom - Scott Hanselman's Blog](https://hanselmanblogcontent.azureedge.net/Windows-Live-Writer/Connecting-to-a-device-over-a-Serial-Por_115BB/image_ab1135f3-5a14-4ff1-9d7d-ba6ab1c3253d.png)
Connect to a device over Serial COM Port on Windows 10 with WSL1 TTY devices with Windows Terminal and minicom - Scott Hanselman's Blog
CCS/MSP432E401Y: Cannot open serial Port XDS110 Class Application/User UART - MSP low-power microcontroller forum - MSP low-power microcontrollers - TI E2E support forums
![AWR1642BOOST: AWR1642BOOST Serial Port Cannot Open - Sensors forum - Sensors - TI E2E support forums AWR1642BOOST: AWR1642BOOST Serial Port Cannot Open - Sensors forum - Sensors - TI E2E support forums](https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/1023/1460.Untitled.png)
AWR1642BOOST: AWR1642BOOST Serial Port Cannot Open - Sensors forum - Sensors - TI E2E support forums
![Cannot select serial port, open serial port (VSCode, Arduino, Apple M1) · Issue #1232 · microsoft/vscode-arduino · GitHub Cannot select serial port, open serial port (VSCode, Arduino, Apple M1) · Issue #1232 · microsoft/vscode-arduino · GitHub](https://user-images.githubusercontent.com/8652224/114761886-c197a580-9d69-11eb-9155-b254a6ce26ba.png)
Cannot select serial port, open serial port (VSCode, Arduino, Apple M1) · Issue #1232 · microsoft/vscode-arduino · GitHub
![GNU/Linux: Error message 'error opening serial port', 'avrdude: ser_open(): can`t open device <port>', 'permission denied' - GNU/Linux: Error message 'error opening serial port', 'avrdude: ser_open(): can`t open device <port>', 'permission denied' -](https://duinocoin.de/img/tipps_tricks/Error_Serial_Port-full.png)
GNU/Linux: Error message 'error opening serial port', 'avrdude: ser_open(): can`t open device <port>', 'permission denied' -
![Can't open device "\\.\COM4": Access is denied error when uploading a sketch from Arduino IDE | I learned it. I share it. Can't open device "\\.\COM4": Access is denied error when uploading a sketch from Arduino IDE | I learned it. I share it.](https://gyorgybalassy.files.wordpress.com/2020/10/arduino-port-selection.png)
Can't open device "\\.\COM4": Access is denied error when uploading a sketch from Arduino IDE | I learned it. I share it.
![Cannot select serial port, open serial port (VSCode, Arduino, Apple M1) · Issue #1232 · microsoft/vscode-arduino · GitHub Cannot select serial port, open serial port (VSCode, Arduino, Apple M1) · Issue #1232 · microsoft/vscode-arduino · GitHub](https://user-images.githubusercontent.com/8652224/114764476-a5e1ce80-9d6c-11eb-8a3e-cb943a63beda.gif)
Cannot select serial port, open serial port (VSCode, Arduino, Apple M1) · Issue #1232 · microsoft/vscode-arduino · GitHub
![Can't open device "\\.\COM4": Access is denied error when uploading a sketch from Arduino IDE | I learned it. I share it. Can't open device "\\.\COM4": Access is denied error when uploading a sketch from Arduino IDE | I learned it. I share it.](https://gyorgybalassy.files.wordpress.com/2020/10/arduino-serial-port-in-device-manager.png)
Can't open device "\\.\COM4": Access is denied error when uploading a sketch from Arduino IDE | I learned it. I share it.
![avrdude: ser_open(): can't open device "\\.\COM7": Access denied. - Installation & Troubleshooting - Arduino Forum avrdude: ser_open(): can't open device "\\.\COM7": Access denied. - Installation & Troubleshooting - Arduino Forum](https://europe1.discourse-cdn.com/arduino/optimized/4X/e/8/0/e807ffa7e6105054c5150025a15a01ee1bee10bd_2_690x387.png)
avrdude: ser_open(): can't open device "\\.\COM7": Access denied. - Installation & Troubleshooting - Arduino Forum
![Mac Error: Cannot open serial port, please make sure you have your radio connected - APM Planner 2.0 - ArduPilot Discourse Mac Error: Cannot open serial port, please make sure you have your radio connected - APM Planner 2.0 - ArduPilot Discourse](https://discuss.ardupilot.org/uploads/default/original/2X/b/beb2c90b44ee6f07e1c83e4d67a0dd20a8827459.png)