Greetings everyone, today I intended to experiment with my newly purchased Arduino Uno R4, but I discovered that the servo library does not support the Uno R4 board, resulting in a compilation failure. Therefore, I asked my friend if they could use it, and my friend was able to. I checked the version of my servo library, which was 1.1.8 (or possibly lower, I cannot recall exactly), and it may not support the Uno R4. Upon visiting Servo - Arduino Reference, I found that the latest version is 1.2.1, so I downloaded it and followed the instructions to "Sketch-includelibrary-add zip". However, upon compiling again, the IDE prompted that there were two servo libraries.
In the end, I had to manually extract the downloaded 1.2.1 version and overwrite the C:\Users\Administrator\AppData\Local\Arduino15\libraries\Servo directory.
I am curious if the Arduino official library has an automatic update mechanism. Is it possible to update the corresponding library through the library manager? Another perplexing piece of information is that I was unable to find the servo library in the library manager before manually installing it.
Yes, just the same as any of the other thousands of libraries in Library Manager. The only thing unique about the Servo library is that it is one of the fundamental "built-in" libraries that are automatically installed the first time you start Arduino IDE after a fresh installation.
That is very unexpected.
Are you certain you were looking in "Library Manager" (opened via the icon that looks like books on a shelf), and not in "Boards Manager" (opened via the icon that looks like an Arduino UNO board). I ask because it is fairly common for users to mix up the two similar features.
Did you see any libraries listed in the Library Manager?
Thank you for your response!
I can confirm that prior to manually installing the servo library, my search for "SERVO" in the Library Manager only returned another library I had installed called "ESPSERVO" under the "installed" category. Once I installed the servo library through "Sketch-includelibrary-add zip", searching for "SERVO" in the Library Manager revealed the "servo" library, which was then marked as installed. Subsequently, I uninstalled the "servo" library from the Library Manager, and the compiler did not prompt me about having two servo libraries at the same time. it simply alerted me to a compilation failure due to board incompatibility.
Additionally, it's worth noting that after reinstalling the SERVO library via the Library Manager, something remarkable happened - the IDE did not prompt me about having two servo libraries at the same time and can work as expected.
This has left me feeling somewhat perplexed. Based on what you mentioned earlier, I gather that "SERVO" should always be searchable and correspond to a built-in Servo library, is that correct?
