# Can't Use DFPlayer Mini Player Sensor on Arduino Uno **URL:** \ **Category:** General Electronics\ **Created:** [December 8, 2021, 5:12pm UTC](https://forum.arduino.cc/t/cant-use-dfplayer-mini-player-sensor-on-arduino-uno/933667 "2021-12-08T17:12:31Z")\ **Posts on this page:** 11\ **Page:** 3
**Author:** ![kareemafifi](https://avatars.discourse-cdn.com/v4/letter/k/b3f665/32.png) [@kareemafifi](https://forum.arduino.cc/u/kareemafifi)\ **Post date:** [December 10, 2021, 5:07pm UTC](https://forum.arduino.cc/t/cant-use-dfplayer-mini-player-sensor-on-arduino-uno/933667/42 "2021-12-10T17:07:42Z")
Well , i have formatted the SD Card Yesterday but still this doesnt solve the issue . What do you mean by "in the root" ? . Also , in the Latest code i sent , I have used a method from the Library which is (isPlaying()) which returns 1 meaning that it is playing audio , isnt it ? . Also i have used the method(numSDTracks()) which returns 3 ,which is the exact number of tracks on the Sd Card .Meaning that it actually sees the SD card ? . Another Question , How can i test the speaker that i have ? ---
**Author:** ![halloweenrick](https://avatars.discourse-cdn.com/v4/letter/h/7ab992/32.png) [@halloweenrick](https://forum.arduino.cc/u/halloweenrick)\ **Post date:** [December 10, 2021, 7:14pm UTC](https://forum.arduino.cc/t/cant-use-dfplayer-mini-player-sensor-on-arduino-uno/933667/43 "2021-12-10T19:14:18Z")
In the Serial Monitor you posted, isPlaying isn't showing up. It's in the program, but not showing up on Serial Monitor. If it is returning 1, then yes it should be playing. And yes if it shows the number of tracks its communciating. I don't know of anyway to test the speaker other than this, you may want to Google the forum and see if any of the Tone() functions can be run through the speaker to test it through the Arduino - bypassing the DFMini. ---
**Author:** ![kareemafifi](https://avatars.discourse-cdn.com/v4/letter/k/b3f665/32.png) [@kareemafifi](https://forum.arduino.cc/u/kareemafifi)\ **Post date:** [December 10, 2021, 7:30pm UTC](https://forum.arduino.cc/t/cant-use-dfplayer-mini-player-sensor-on-arduino-uno/933667/44 "2021-12-10T19:30:59Z")
Yes , infact the isPlaying() is returning 1 . Okay , i will try to test the speaker using any method i find . Do you think if i measure it using a multimeter , will i be able to know whether it is working or not ? ---
**Author:** ![halloweenrick](https://avatars.discourse-cdn.com/v4/letter/h/7ab992/32.png) [@halloweenrick](https://forum.arduino.cc/u/halloweenrick)\ **Post date:** [December 10, 2021, 7:37pm UTC](https://forum.arduino.cc/t/cant-use-dfplayer-mini-player-sensor-on-arduino-uno/933667/45 "2021-12-10T19:37:41Z")
You can try a multimeter, but the speaker is so small I don't think you'll be able to tell much. I'd try to Google a differenty method. ---
**Author:** ![kareemafifi](https://avatars.discourse-cdn.com/v4/letter/k/b3f665/32.png) [@kareemafifi](https://forum.arduino.cc/u/kareemafifi)\ **Post date:** [December 10, 2021, 8:20pm UTC](https://forum.arduino.cc/t/cant-use-dfplayer-mini-player-sensor-on-arduino-uno/933667/46 "2021-12-10T20:20:39Z")
Okay , will try the multimeter tomorrow and will tell you the results .Most videos i see , i think it will fry the Arduino as they are connecting it to the Speaker directly . Can you recommend any video that uses the Tone() without transistors or any other stuff . This is due to your experience Appreciate your follow up with me Thanks ---
**Author:** ![kareemafifi](https://avatars.discourse-cdn.com/v4/letter/k/b3f665/32.png) [@kareemafifi](https://forum.arduino.cc/u/kareemafifi)\ **Post date:** [December 11, 2021, 2:03pm UTC](https://forum.arduino.cc/t/cant-use-dfplayer-mini-player-sensor-on-arduino-uno/933667/47 "2021-12-11T14:03:27Z")
Well , i have tried the speaker with the Tone() . and it actually produces a sound( a very low one) , but it is actually working . What do you think ? .Should i try connecting the Negative Pin of the Speaker to the GND on the Left Hand Side of the Schematic ? (by this the df player will not be connected to any ground ) ? .Can i connect the SPK1 to the Arduino to see if there is any Frequencies coming from it ? Or Do you have any suggesting i am just brainstorming ---
**Author:** ![kareemafifi](https://avatars.discourse-cdn.com/v4/letter/k/b3f665/32.png) [@kareemafifi](https://forum.arduino.cc/u/kareemafifi)\ **Post date:** [December 12, 2021, 11:56am UTC](https://forum.arduino.cc/t/cant-use-dfplayer-mini-player-sensor-on-arduino-uno/933667/48 "2021-12-12T11:56:45Z")
Also , i have tried to assign the Negative pin of the Speaker to the GND on the Left Side of the schematic , but still this doesn't solve the issue . I wonder if there is a way to see if the SPK1 outputs anything at all or not ? ---
**Author:** ![halloweenrick](https://avatars.discourse-cdn.com/v4/letter/h/7ab992/32.png) [@halloweenrick](https://forum.arduino.cc/u/halloweenrick)\ **Post date:** [December 12, 2021, 7:39pm UTC](https://forum.arduino.cc/t/cant-use-dfplayer-mini-player-sensor-on-arduino-uno/933667/49 "2021-12-12T19:39:14Z")
So we have a working Arduino, a working DF Mini player, and now a working speaker. So we know all the hardware is good- its got to be in the file system of that SD Card. Read through the link carefully for how to put the files on the SD Card. I'd still use the DF Mini Fast example and use that program. Nothing on the right side of the DF Mini is going to help the situation. > **[DFPlayerMini cheat sheet](https://reprage.com/posts/2018-05-08-dfplayer-mini-cheat-sheet/)** > > A cheat sheet on how to get the most out of your DFPlayerMini and Arduino ---
**Author:** ![kareemafifi](https://avatars.discourse-cdn.com/v4/letter/k/b3f665/32.png) [@kareemafifi](https://forum.arduino.cc/u/kareemafifi)\ **Post date:** [December 13, 2021, 7:58pm UTC](https://forum.arduino.cc/t/cant-use-dfplayer-mini-player-sensor-on-arduino-uno/933667/50 "2021-12-13T19:58:19Z")
Well , i have formatted the SD Card as per the previous attachment , i have made the schematic same as the Link . But still there is no sound , When i put the speaker near my ears i can hear as if current is passing , it is not completely silent . Which means that there is something happening . What i am thinking is how can i see what SPK1 and SPK2 is spitting out from the Module , and if you have other suggests please tell me Really appreciate your patience with me . ---
**Author:** ![kareemafifi](https://avatars.discourse-cdn.com/v4/letter/k/b3f665/32.png) [@kareemafifi](https://forum.arduino.cc/u/kareemafifi)\ **Post date:** [December 13, 2021, 8:01pm UTC](https://forum.arduino.cc/t/cant-use-dfplayer-mini-player-sensor-on-arduino-uno/933667/51 "2021-12-13T20:01:40Z")
Do you think that the Class of the SD Card would matter ? , i have even tried a different sd card but nothing .I personally dont think that the problem is in the SD card ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [June 11, 2022, 8:01pm UTC](https://forum.arduino.cc/t/cant-use-dfplayer-mini-player-sensor-on-arduino-uno/933667/52 "2022-06-11T20:01:42Z")
Closed on June 11, 2022, 8:01pm UTC This topic was automatically closed 180 days after the last reply. New replies are no longer allowed. [Previous page](https://forum.arduino.cc/t/cant-use-dfplayer-mini-player-sensor-on-arduino-uno/933667.md?page=2)