Questions tagged [dfplayer]
The dfplayer tag has no summary.
13 questions
1
vote
1
answer
142
views
Understanding power and current limits in circuits
This question arises from a confusion about theory and seeing successful projects online.
I want to connect a DFPlayer Mini MP3 module and a speaker to a Raspberry Pico Pi 2 microcontroller and it's ...
- 147
0
votes
0
answers
22
views
Transistor biasing on switch state change - DFPlayer mini
Relative newbie here.
I'm looking for some guidance on a DFPlayer project. We are looking to update this musical tracer project:
https://www.zeroday.camp/musical-tracer/
Basically music plays when a ...
1
vote
2
answers
192
views
How can I down mix stereo to mono audio on a DFPlayer Pro?
I am trying to make an MP3 speaker using a DFPlayer Pro.
The processor generates a DAC left and DAC right which are then fed into a stereo amplifier which generates the L+/- and R+/- to go to the ...
- 147
0
votes
1
answer
161
views
Why won’t this circuit work when powered via a DC adapter?
This circuit uses an Arduino Nano and a DFRobot DFPlayer Mini to read from two load cells and then play some audio and turn on some LEDs when the weights match a specific criteria.
This works well ...
- 1,360
1
vote
0
answers
127
views
MOSFET Power Control Problem: DFPlayer Circuit Not Working on PCB
I built a circuit that plays MP3 files and is controlled by an Arduino. I assembled the circuit on a breadboard, and it worked, but when I fabricated a PCB, the circuit failed. The problem is that the ...
- 113
0
votes
1
answer
160
views
DF Player Mini Not Playing All Audio Files [closed]
I am currently using a DF Player Mini as a standalone MP3 player. However, I am facing an issue where the module goes into standby mode after playing one track and I am unable to make it play all the ...
user355961
1
vote
1
answer
76
views
How to simulate a short key press [closed]
I have a MP3player (DFPlayer Mini module). This module has a pin which allows to start next track with a short pull to GND. I want to make it work without a physical button. I believe there is way to ...
- 143
1
vote
2
answers
205
views
Only connect consumer to battery on button press
I want to build a toy for my daughter. It contains a couple of buttons and each of them play a different sound.
I have a 3.7v 500mAh battery, a tp4056 battery charger and a dfplayer audioplayer.
This ...
- 111
0
votes
1
answer
2k
views
DFPlayer DAC_R and DAC_L vs SPK
I have a DFPlayer and I want to connect the output of this device to an audio station (which has a jack stereo input - aka aux).
It is unclear for me what the difference is between DAC_R, DAC_L and ...
- 127
0
votes
1
answer
172
views
Wiring left and right channels together coming out of MP3 player module
I have a DFPlayer MP3 module and i'd like to use the dac_l and dac_r outputs to connect to an amplifier. However, the amplifier is mono and i'd like to hear both channels coming out of the speaker.
...
- 167
1
vote
2
answers
6k
views
DFPlayer + amplifier give weird noise
I connected a DFPlayer with a PAM8403 on pin DAC_R like this:
I also added capacitor on the supply line.
Here the sound i have from the speaker:
You can lisen here: https://www.dropbox.com/s/...
- 11
1
vote
1
answer
534
views
Audio Player and RF Receiver Interference (no transmission data when audio is playing)
I've been trying to control a MP3 player wirelessly through RF but it seems that once I start to play music the receiver stops carrying data to the MCU.
My setup is the following:
Receiver: Arduino ...
- 433
1
vote
0
answers
2k
views
DFPlayer Module Sleep mode working for anyone?
I'm trying to put a DFPlayer module into sleep mode.
The command seems to be: 7E FF 06 0A 00 00 00 FE F1 EF. The normal power consumption my supply is showing (when the module is idle) is about 15mA, ...
- 1,912