I realize that I'm a bit slow in replying to your question; please forgive my tardiness. The sketch that I included from my original post was co...

One last update.I have fixed the problem. The ground pin of the factory-installed header pins was not soldered. 🤬 🤬 🤬 ᾒ...

I realize it has been almost a year since I started this thread, but I have not forgotten about it. I moved on to some other projects that were a gre...

I tried it and in a word it was frustrating. It appears that the library DFRobotDFPlayerMini cannot handle two players. If it can I could not make i...