DFPlayer controlled by Arduino - Noise Problem
tractionfan 2014-06-14 10:03:04 4216 Views2 Replies I have been able to compile and upload (from Arduino Uno) the sample DFPlayer software (new library) but have a loud buzzing noise which begins a few seconds into playing the first track and then continues through all other track playing. I have used the USB serial cable and/or a 9 volt battery but no difference in noise problem.
Incidentally, I don't get the noise problem when running the DFPlayer from the simple push button controls.
Any thoughts?
Fred Miller
Incidentally, I don't get the noise problem when running the DFPlayer from the simple push button controls.
Any thoughts?
Fred Miller
2014-06-16 18:30:57 Hello tractionfan,
Yeah? it is better to add a resister between RX and TX.
Thank you for your reminder. The connection diagram has been updated. Please check the [url=https://www.dfrobot.com/wiki/index.php/DFPlayer_Mini_SKU:DFR0299#Connection_Diagram]DFplayer wiki[/url] page. Grey.CC
Yeah? it is better to add a resister between RX and TX.
Thank you for your reminder. The connection diagram has been updated. Please check the [url=https://www.dfrobot.com/wiki/index.php/DFPlayer_Mini_SKU:DFR0299#Connection_Diagram]DFplayer wiki[/url] page.
Grey.CC 2014-06-15 07:48:20 Found a solution to my "noise" problem. Insert a 1K resistor between the Arduino-UNO transmit pin and the DFPlayer Receive pin. This should probably be shown in the "Connection Diagram" in the DFPlayer manual.
Fred Miller tractionfan
Fred Miller
tractionfan 