197 Super Mario Tune on A Piezo Speaker
197 : Super Mario Tune on A Piezo Speaker
- Author: Milosch Meriac
- Description: Plays Super Mario Tune over a Piezo Speaker connected across uio_out[1:0]
- GitHub repository
- Clock: 100000 Hz
- Feedback: ✅ 3
How it works
Converts an RTTL ringtone into verilog using Python - and plays it back using differential PWM modulation
How to test
Provide 100kHz clock on "clk" pin, briefly hit reset low ("rst_n") and uio_out[1:0] will play a differential sound wave over a connected piezo speaker (Super Mario)
External hardware
Piezo speaker connected across io_out[1:0]
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | ui_in[0] | ui_in[0] | piezo_speaker_p (uio_out[0]) |
| 1 | ui_in[1] | ui_in[1] | piezo_speaker_n (uio_out[1]) |
| 2 | ui_in[2] | ui_in[2] | GND |
| 3 | ui_in[3] | ui_in[3] | GND |
| 4 | ui_in[4] | ui_in[4] | GND |
| 5 | ui_in[5] | ui_in[5] | GND |
| 6 | ui_in[6] | ui_in[6] | GND |
| 7 | ui_in[7] | ui_in[7] | GND |
User feedback
- mattvenn: Plays the mario theme tune. Milosch showed on the TT05 bringup party
- chaseadam: played with piezo on simon board, just needed to jump pin 0 from bidi pmod on board to output connector IO5 on simon board
- MichaelBell: Works well with the Piezo on the new audio Pmod!