These images are made by attaching a graphics tablet pen to a 3D printer.
The pen position is captured by using a USB capture software and Windows raw input on Windows 10 64bit
- Test pattern size is 70 mm x 40 mm
- Slow speed tests were run at 33 mm/s and high speed tests at 200 mm/s
- Printer's acceleration was set to 6000 mm/s2
- Pen was hovering about 1 mm above the tablet's surface
- Blue dots in the result are USB packets received from the tablet.
- Green dots are Windows raw input positions.
- Tablet driver version is shown in the title when the Windows raw input data is used in the test.
- Click an image to see the larger version.
- Click play button () to see an animation of the test result.
The animation speed should match with the real movement speed.
- Click the dimmed out area to close the animation.
- Wacom CTL-470, CTH-480 and CTL-472 doesn't have any hardware smoothing.
- Wacom CTL-490 does have huge amount of hardware smoothing while hovering, but the hardware smoothing is disabled when the pen pressure is detected.
- Every Wacom driver I have tested does filter the position data.
- It seems that the Wacom driver 6.3.9w5 tries to predict the pen position and overshoots the target on fast direction changes.
- Slow motion animations of Wacom CTH-480 with different drivers:
- Wacom CTL-472 driver 0.0.6 is a custom made driver that just converts the pen position data to a cursor position without any smoothing. That test shows that the testing method doesn't alter the latency in the results.
- XP Pen G640 does have the least amount of hardware smoothing after Wacom tablets and the driver doesn't add any smoothing or latency.
- Gaomon S56K is good at higher speeds, but is acting weirdly on slower speeds.
- My wacom CTL-470 might be broken. The circles are skewed.