Testing a G29
The G29 is Logitech’s PlayStation and PC wheel. Its rotation is 900° lock to lock (Logitech), which the tester is already set to, and it measures steering with a Hall-effect sensor, so spikes in the steering sweep are unusual and worth a second run.
On a computer, set the mode switch on the wheel to PS3, plug in the power supply and USB, and let the wheel calibrate. Then follow the set-up: turn a quarter turn right, press the throttle, the brake and the clutch. Browsers often report a released pedal at one end of its range and a pressed one at the other, sometimes the other way round than you’d expect; the set-up works out each pedal’s direction by itself.
The pedals are the usual weak point
The G29 pedals measure travel with potentiometers. After a few years, dust and wear make the reading jump for an instant, which feels like the car braking or accelerating by itself. Run the pedal test on each pedal: a ringed spike on the plot, or a glitch count that keeps rising while you drive, confirms it. Cleaning the potentiometer with electrical contact cleaner often cures it; iFixit has a guide for opening the G29 pedal base.
If only one pedal seems to work in games, check that Combined Pedals is off in G HUB: it puts throttle and brake on one axis. The tester recognises that layout and labels the pedals as the two halves of one axis.
Buttons and shifter
The wheel reports its face buttons, paddles, the plus and minus buttons, the red dial and Enter as numbered buttons, and the D-pad as a hat switch. Press each one in the button grid below the live view. Logitech lists the G29’s shifter positions as buttons 12 to 18, 1st gear to reverse (Logitech support). Browsers number buttons from 0 and this page from 1, so the tester presets them as buttons 13 to 19 and the H-pattern lights up as you engage a gear. That preset and the paddles’ (usually buttons 5 and 6) come from Logitech’s numbering, not a test on every set-up: if the wrong gear or paddle lights up, choose Learn shifter or Learn paddles.
What the tester is set up for
| Rotation | 900° lock to lock, preset in the tester |
|---|---|
| Pedals in the box | throttle, brake, clutch |
| Shifter gears | 1st to 6th and reverse usually on buttons 13 to 19 |
| Paddles | usually left on button 6, right on button 5 |
| USB ids | 046d:c24f Logitech G29 Driving Force046d:c260 Logitech G29 Driving Force (PS4 mode) |
Button numbers count from 1, as in Windows' game controller settings; if yours differ, use the Learn buttons. USB ids come from the Linux kernel's device list and SDL; the tester shows the id your browser reports under the device's name.