Lo Poly Racer
June 18, 2026•219 words
I’m embarking on a new slow burn project developing audio to compliment an interactive and real time visual representation of the route and terrain generated by a cycle trainer.
The project is called Lo Poly Racer
It is an open-world cycling simulator using software running on a Raspberry Pi.
See:
https://www.dhp11.com/docs/p005/
The software Raylib is a simple and easy-to-use library primarily employed to create and enjoy videogames programming.
See:
https://www.raylib.com/
The challenge will be to develop several audio files that can be triggered and / or modified by the parameters passed over Bluetooth from the cycling simulator to the Raylib software.
For example we are considering the following parameters that can define the users activity on the cycle trainer.
Gradient -25 to +25% - in reality -5 to + 5
Direction -0-360 degrees
Speed - 0-80 kmh
Heart rate - 40-200 bpm - age related eg %age of max heart rate eg 30-100%
Cadence - pedal speed - 0-120 revs per minute
Altitude 0-2500m - may need to alter scale dependent on route
Lattitude -90 + 90
Longitude 0-360
Wind speed 0-50kmh
Wind direction - 8 compass points
Apparent wind speed - either positive or negative
There is still some learning required to figure out how these changes in parameters may affect the audio being heard by the user.