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Color Profiles

I bought a Spyder 5 Elite display calibrator. Then, it's inevitable that I will start benchmarking and calibrating all the devices I own. I think it would be nice to share the generated color profiles so owners of those (poorly factory-calibrated) devices can use them to hopefully get a better color reproduction.  As a rule of thumb, without any calibrator or color palettes on hand, you can compare your device with an Apple device (which usually has a good factory calibration and does not have the "vibrant enhancement" BS) to get a sense of its color accuracy. All calibrations are done with the default settings (50% brightness, Gamma 2.2, 6500K) I do not provide any guarantee on the quality of those profiles. Use it at your own risk. Device Name Serial Numbers Profile Coverage Device Panel sRGB aRGB DCI-P3 Wacom DTH-W1310  6CAH000337-715 EDID   ICC

A Modern Reincarination of Graphire: WACOM Bamboo Series Drawing Tablet Reverse Engineering

This is going to be a short follow-up of the previous article; please read that one before proceeding:

Same as before, all the high-resolution PCB scans have been uploaded to GDrive:

I'm personally attached to the Bamboo product line because that is where I got started 10 years ago. The Bamboo product line is initially made of cheap pen-tablet products designed for the entry-level market. WACOM intentionally limited the performance of those products to avoid direct competition with their professional Intuos product line. 

Interestingly, by the time I started using their products, WACOM had gradually shifted the focus of this product line to experimental and high-diversity products, including mobile phone styluses, ultrasonic pens (The first Bamboo Inkling product), mobile phone applications, and paper-based products (e.g. Bamboo Folio and Bamboo Slate). Meanwhile, the low-end pen tables have been relocated to the "Intuos" (not "Intuos Pro") line and, subsequently, the "One" product line.


This article is about the Bamboo CTH-470 pen tablet. Surprisingly, the design is almost identical to Graphire's, with no ASIC chips on board (except for the one in the pen). It's quite unusual, considering WACOM's tradition of making ASIC chips since the very beginning.

Backside of the PCB

Captured Waveform at the Integrator's Output

The output waveform is simplified compared to Graphire's. Notice that the pressure resolution has been upgraded to 10 bits instead of 8 bits.

This model also supports capacitive touch using an Atmel chipset.