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Using DFPlayer Mini without Arduino & without PC | Explanation
Today I will practice how to use DF PLAYER MP3
a mini-sized module that can play audio on Micro SD
In fact, without using an external amplifier, we only need to set up, a 3 watt speaker a battery, and a few buttons.
DF PLAYER MINI datasheet:
files.amperka....
Pin 1 VCC Function: Input Voltage - DC3.2 ~ 5.0V; Type: DC4.2V
Pin 2 RX function: UART serial input
Pin 3 TX function: UART serial output
DAC_R Pin 4 function: Right channel audio output - Drive earphones and amplifiers
DAC_L Pin 5 function: Left channel audio output - Drive earphones and amplifiers
SPK2 Pin 6 Function: Speaker (-) - Drive speaker less than 3W
GND 7 Pin Function: Ground - Power GND
Function Pin 8 SPK 1: Speaker (+) -Drive speaker less than 3W
Pin 9 IO1 function: Trigger port 1 - Short press to play previous (long press
to decrease volume)
10 GND Pin Function: Ground - Power GND
Pin 11 IO2 function: Trigger port 2 - Short press to play next (long press to
increase volume)
Pin Function 12 ADKEY_1: AD Port 1 - Trigger play first segment
Pin Function 13 ADKEY_2: AD Port 2 - Trigger play the fifth segment
Pin 14 USB + function: USB + DP - USB Port
Pin 15 USB Function : USB DM - USB Port
Pin 16 BUSY Function: Playing Status - Low means playing \ High means no
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