Reference
Last revision 2025/12/19
Principle
This ADKey board with 10 keys can be used to drive your DFPlayer Pro, DFPlayer Mini, or Voice Recorder Module
NOTE: When using this board to drive modules like DFPlayer Pro, DFPlayer Mini or Voice Recorder module, please do not connect VCC to the board since these modules have been pulled up 22K internally.
Connection with DFPlayer Pro
| Key | Series Resistance | Tap | Long-press |
|---|---|---|---|
| K0 | 0R | Pause & Play | |
| K1 | 3K | Last | Volume+ |
| K2 | 6.2K | Next | Volume- |
| K3 | 9.1K | Playback mode switch | |
| K4 | 15K | Fast Forward 10s | |
| K5 | 24K | Pause & Play | Next |
| K6 | 33K | Volume- | Volume- |
| K7 | 51K | Volume+ | Volume+ |
| K8 | 100K | Fast Backward 10s | |
| K9 | 220K | Play the first song, set volume to 10 |
Connection with DFPlayer Mini
Left:
| Key | Series Resistance | Tap | Long-press |
|---|---|---|---|
| K0 | 0R | First song | |
| K1 | 3K | Second song | |
| K2 | 6.2K | Third song | |
| K3 | 9.1K | Fourth song | |
| K4 | 15K | Last | Volume+ |
| K5 | 24K | Next | Volume- |
| K6 | 33K | Pause & Play | Volume- |
| K7 | 51K | Repeat all | |
| K8 | 100K | U/SD/SPI | |
| K9 | 220K | Playback mode |
Right:
| Key | Series Resistance | Tap | Long-press |
|---|---|---|---|
| K0 | 0R | Fifth song | |
| K1 | 3K | Sixth song | |
| K2 | 6.2K | Seventh song | |
| K3 | 9.1K | Eighth song | |
| K4 | 15K | Ninth | |
| K5 | 24K | Tenth | |
| K6 | 33K | Eleventh | |
| K7 | 51K | Twelveth | |
| K8 | 100K | Thirteenth | |
| K9 | 220K | Fourteenth |
Connection with Voice Recorder Module
| Key | Series Resistance | Tap | Long-press |
|---|---|---|---|
| K0 | 0R | Pause & Play | |
| K1 | 3K | Last | Volume+ |
| K2 | 6.2K | Next | Volume- |
| K3 | 9.1K | Playback mode switch | |
| K4 | 15K | REC | |
| K5 | 24K | PLAY | |
| K6 | 33K | Volume- | Volume- |
| K7 | 51K | Volume+ | Volume+ |
| K8 | 100K | Working mode switch | |
| K9 | 220K | Delete currently playing file |
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