DFPlayer - unstable serial connection

Hi
I have now spend quite some time playing around with the DFPlayer Mini board. I really like the feature set, but it is extremely unreliable. Its almost complete random if it receives the serial command or not, and i have tried quite allot of hacks, including sending each command several times, and adding a delay in front of or after sending the command.
I am just trying to control the simple player features from the arduino, so Play/Pause, Next/Previous track and volume. It even sometimes just start playing at full volume when i have set a specific volume through the serial.
Does anybody have any experience with this kind of problem, and if so have an idea to a solution.
I am running the latest library from the github.
Kind regards
Globetec
I have now spend quite some time playing around with the DFPlayer Mini board. I really like the feature set, but it is extremely unreliable. Its almost complete random if it receives the serial command or not, and i have tried quite allot of hacks, including sending each command several times, and adding a delay in front of or after sending the command.
I am just trying to control the simple player features from the arduino, so Play/Pause, Next/Previous track and volume. It even sometimes just start playing at full volume when i have set a specific volume through the serial.
Does anybody have any experience with this kind of problem, and if so have an idea to a solution.
I am running the latest library from the github.
Kind regards
Globetec