SPK
In audio circuits, SPK is the abbreviation for Speaker, referring directly to the "loudspeaker".
Preparation
- A Rhino Pi-A1
- Several jumper wires
- An amplifier speaker
Connection
| No. | Board Silkscreen | GPIO/System Mapping | Description |
|---|---|---|---|
| 7 | SPK_P | SPK_P | Speaker differential output positive |
| 9 | SPK_N | SPK_N | Speaker differential output negative |
Connect SPK_P to the positive terminal of the amplifier speaker and SPK_N to the negative terminal of the amplifier speaker.
Testing
Android Integrated System
After connecting the amplifier speaker, adjust the system volume and the speaker will output the system sound.