The latest articles on DEV Community by Chris Owen (@r_chris_owen). https://dev.to/r_chris_owen https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3922113%2F65e896aa-01f4-473a-874c-12785257efd6.JPG https://dev.to/r_chris_owen en Chris Owen Thu, 14 May 2026 18:24:49 +0000 https://dev.to/r_chris_owen/unable-to-open-port-devtty4-for-programmer-arduino-3k09 https://dev.to/r_chris_owen/unable-to-open-port-devtty4-for-programmer-arduino-3k09 <p>I am running arduino IDE on Mint 20. Any device with any communication with the serial port will cause the error. I am a beginner with Linux but I have checked the port in the terminal and all looks good. The same sketch runs fine on my Windows 10, but I am trying to divorce it! Please give me some guidance.</p> beginners iot linux