I have a problem when saving as or saving the Arduino program code. When I open the Arduino Idea, a basic code template will appear. However, if I save as by saving it in the document folder and I change the name of the program code, a notification appears as shown. Conversely, if I save and change the name, the result is the same. However, if I use the original name, namely sketch_jun3g, it can be saved directly in the document folder. How do I solve this? This makes me dizzy looking for the Arduino code file when using a random name. If I change the name in the document folder, the program code error occurs.
Hi @arnadee. As is explained in that dialog, spaces are not allowed in the sketch name. So you must choose a name that doesn't contain any spaces. I suggest using the name ESP8266ToBlynk.
The folder name and the file name must be exactly the same, case included. Launching a file without being inside a same-name folder will create a dialog box to create that same-name folder. Also, follow the directions of post #2.