Here’s Why PS5 Joysticks Drift (and Why They’ll Only Get Worse) | iFixit News
Why are the PS5’s joysticks drifting? They use the same fallible hardware as most game controllers. Here’s what’s happening inside, and how we could fix it.
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A tech breakdown on what's causing some DualSense controllers to drift so quickly. More details in the article and video breakdown, but tl;dr one of the reasons is using cheaper off-the-shelf joystick modules can scratch the surface of the stick's potentiometers to alter how it reads. Spring Fatigue, contamination, and material stretching are also touched on.
"The real fix is better choices by console makers"
Mere months have passed since the PS5's hotly anticipated launch, and already there's a class-action lawsuit brewing over joystick drift on Sony's high-tech DualSense controllers. Who could have seen this coming? Well, as it turns out, everyone. Everyone should have seen this coming. Because for all its exciting new tech, the DualSense uses off-the-shelf joystick hardware with a long history of predictable, preventable issues. And now we've investigated those issues in excruciating detail.
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Sony isn't the only company to use off-the-shelf joystick modules, but, like Microsoft, they've made it difficult to repair this consumable component. Joysticks have a known life expectancy—it's listed right in a product sheet from the manufacturer. It's predictable they would fail, which makes you wonder if it's a willful cost-saving calculation on the console makers' part to not offer more reliable, or replaceable, sticks.
The joystick modules themselves are manufactured by Alps—a name familiar to anyone who has fallen down a deep keyboard hole, or struggled with a trackpad driver. The Japanese company (formerly Alps Electric, now Alps Alpine) specializes in input and sensing devices.
Tempting as it may be to blame Alps for the PS5's drifting issues, they probably aren't the villain of this story—because, brand name notwithstanding, this joystick module looks extremely familiar. You may already recognize it from the prior-gen PlayStation's controller, the DualShock 4. Or from the Xbox One controllers. Maybe the Nintendo Switch Pro controller. Or, somewhat confusingly, the $180 Xbox One Elite controller. Underneath that plastic cap, the dirty secret is that they all use the same joystick hardware.
The first potential cause of drift is the hardest to avoid: wear to the potentiometers. Over time, the wiper scrubbing back and forth against the resistive pad creates imperfections, altering the voltage readings across the terminals—think of a skipping record or scratched CD. It's worth noting that, while the Switch's infamously drifty Joy-Con sticks look quite different internally, with wipers moving across flat pads instead of circular tracks, they can fail in exactly the same way: wear to the pads, resulting in incorrect readings.
If you're experiencing drift on your controller, you have three real options: Fix it (either yourself or through an experienced tech), send the controller back to the manufacturer and wait for a fix (if it's warrantied/covered), or buy a new one. It's bizarre to us that the console makers, who spend countless thousands of hours obsessing over their controller designs, don't just concede that joysticks are consumable parts, and design them as such to be more easily replaced.
No device, rated for 2,000,000 cycles, especially a vessel of frustration or obsession, can maintain perfect performance forever. They should be designed with that reality in mind. Nintendo, for all its extended silence on Joy-Con drift failures, at least chose an easily replaceable joystick secured by Phillips screws and a flexible cable, not 16 solder joints. And even if a joystick needs the stability of solder beneath it, it's possible to design a "breakout board," such as we often see on phones and other portable devices. A smaller circuit board would hold the joystick and its necessary wires and chips, then connect to the main board with a detachable cable.
In the end, then, the real culprits of drift are humans, and profits. These controllers are cheaper to produce up-front, but more expensive to fix when they fail. Perhaps gaming companies can't reconcile the obvious truth that joysticks fail with the image of their technology as immaculate, bleeding-edge, a completely seamless entertainment experience. But we think most people would prefer to be a bit more realistic about something as unglamorous as a thumbstick. It beats mailing out a controller, or buying another $70 controller to replace an 88-cent part.