FreeJoy is a widely configurable game device controller based on the cheap STM32F103C8 microcontroller board. It allows you to create your own HOTAS, pedals, steering wheel device, etc, or customize a purchased one.
See our wiki for instructions on how to flash firmware to your board and how to configure the device for your application.
FreeJoy supports the following external periphery:
- 8 analog inputs (12 bit output resolution)
- axis to buttons function (up to 12 buttons per axis)
- buttons/encoders to axis functions
- 128 digital inputs (buttons, toggle switches, hat povs, encoders)
- 5 shift modifiers
- 4 hat povs
- 16 incremental encoders
- shift registers 74HC165 and CD4021
- digital sensors TLE5010/5011, TLE5012B, AS5048A, AS5600, MLX90393 (SPI interface only)
- external ADCs ADS1115 and MCP3201/02/04/08
- 4 PWM channels for lighting
- 24 LEDs (single or matrix) bindable to buttons' states
- device name and other USB settings
FreeJoy supports up to 8 analog inputs at pins A0-A7 and digital sensors as axis sources. Every axis has its own settings, including:
- Source/destination (X, Y, Z, Rx, Ry, Rz, Slider1, Slider2)
- Output enabling/disabling
- Resolution
- Calibration (manual or auto)
- Smoothing (7 levels of filtering)
- Inversion
- Deadband (dynamic or center)
- Axis offset option (magnet offset)
- Curve shaping
- Functions for combined axes
- Buttons from axes
- Axes from buttons/encoders
FreeJoy allows you to connect up to 128 digital inputs as single inputs (tied to VCC or GND), button matrices, shift register inputs and axis-to-buttons inputs. Inputs can be configured as:
- Regular push button
- Inverted push button
- Toggle switch ON/OFF
- Toggle switch ON
- Toggle switch OFF
- POV hat button
- Incremental encoder input
- Radio buttons
- Sequential buttons
- 5 shifts
FreeJoy configuration is possible using an external utility.
