Entering the world of custom mechanical keyboards is something I've only done for about a year now, but during that time, I've encountered some truly unique keyboards. For instance, there's the Starfish (Staryu), which is incredibly compact with just five buttons, and the Cherry 1800 layout keyboard, which is as expansive as a full 108-key setup. Starting as someone who only used electric irons and later graduated to more advanced setups, I began modifying parts and occasionally assisting beginners in the community with troubleshooting. Over time, this evolved into a hobby that brought me closer to many experienced enthusiasts, making my solitary tinkering much more enjoyable.
For a long time, I had my own perspective on what "customization" truly means. Initially, I believed that anything involving a keyboard could be labeled as custom-made, such as assembling PCBs, switches, and cases. However, I came to realize that true customization involves designing your own PCB circuits, creating unique layouts, and developing accompanying software. Those who can achieve this level of personalization are the ones I consider real customizers. Even designing custom keycaps or dyeing switches can be considered a form of customization. Consequently, I’ve always hesitated to call myself a keyboard enthusiast because my projects rarely reached this level of sophistication.
This time, however, I wanted to showcase something particularly intriguing: the XD75Re, a fully hot-swappable 60%-layout keyboard with a full-keyboard design. Some might wonder why it’s called such a peculiar name, but perhaps it holds significance beyond my comprehension.
Reasons for Purchase:
The first custom keyboard I ever encountered was the original GH60 with directional keys, commonly known as the XD60. Familiarizing myself with the 60% layout led me to explore other models like the YDP60 from the Class Plan series. These keyboards emphasize minimalism, featuring inline key placement and compatibility with various space sizes, along with acrylic shells that reflect a super-simplified aesthetic.
After spending time in the community, I noticed three primary demands among those who sought personalization without excessive tinkering: RGB switch lighting, wireless functionality (Bluetooth or premium), and hot-swappable switches. RGB switches require precise switch body positioning, which often conflicts with multi-layout compatibility. Additionally, wiring complexity and PCB costs significantly increase. Wireless solutions, such as Bluetooth, involve specialized knowledge, and while some modules claim to convert standard keyboards into wireless ones, I haven’t delved deeply into how they operate. Another approach involves designing custom PCBs with Logitech premium controllers or emulating wireless capabilities, which isn't cheap. Hot-swappable switches, however, offer the most significant convenience by eliminating the need for soldering, making it easier for players without welding skills.
The XD75 stands out not only for its innovative layout but also for its full-key hot-swappable switch design. Let’s delve into the PCB layout and the final assembly results!
Appearance:
As our group leader and creator of the XD series PCBs, Xiudi naturally provided early access to this new product before it hit the shelves (it’s now officially available). Due to the unique layout, the 2x keycap compatibility is problematic, and the screw holes aren’t entirely compatible with standard GH60 shells. Thus, I received two double-chrysanthemum DSA-height keycaps and some screws and nuts to address these issues.
The PCB comes in an anti-static bag, adorned with a soap-and-cat logo and the group’s QR code. Inside, there’s also a metal sticker.
Comparing it with previous purchases, the red-colored XD60 (discontinued now) contrasts with the newer black versions. Between them lies the XD75 and COSpad, a 4x6 numerical keypad area PCB still supporting multi-column and RGB underglow. To the right is the XD84 package, though it’s currently sold out.
The most striking aspect of the XD75 is its 5x15 button layout, explaining its name. The key buttons resemble movable-type printing, efficiently utilizing all PCB space.
Three light holes are positioned on the front, enabling customizable displays such as layers or lock indicators. Although space is limited, there’s no physical reset button, only reserved solder points for shorting during initialization.
The backside of the PCB features neatly organized alignment points and components. Each switch base is hot-swappable, with seven 5050-size RGB LEDs provided for underglow. An RGB LED strip interface is also present, supporting up to 16 LEDs. Lighting effects can be edited using TMK and controlled directly via keyboard shortcuts, eliminating the need for remote controls.
Use Feel:
Installation:
Given the unconventional layout, the screw holes don’t align perfectly with standard GH60 cases. Nevertheless, I managed to fit one using a transparent plastic shell, despite slight misalignment.
I purchased two sets of transparent plastic shells for $50 each, but only one remains unused. Upon installation, I noticed a block of reinforced ribs near the switch seats on the back. Fortunately, the accompanying spacers and nuts proved useful.
After testing power connectivity, I confirmed everything worked correctly before proceeding further. The RGB lights on the bottom of the data cable lit up instantly, though the transparent shell caused uneven illumination. A milky-white material would yield better results.
Brush Distribution:
Using KLE for key editing, I decided to incorporate a numeric keypad into the layout. Green switches were chosen for the numeric area, leading to the final switchless layout shown below.
Thanks to TMK, programming became straightforward. Tools required include a connected keyboard, Chrome browser, TKG plugin, and firmware. The TKG used supports the XD75, allowing direct configuration adjustments.
After configuring, I set up multi-layer switches and adjusted LED settings. Since it’s a new keyboard, I’m using an interim firmware provided by Xiudi until the official version is released.
Switch Selection:
I opted for the Jadalong five-legged transparent switch cover, commonly referred to as the G-axis. Known for affordability, it costs half the price of the C-axis. I avoided common switches like green and black, preferring red switches for daily typing. Previously, I used full-stock G-axis switches with lights, but they’re now discontinued. Rarely seen, the Jadalong Purple Switch is rumored to be custom-made. Though I own only one, its beauty is undeniable.
Hot-swappable switches require careful lamp placement. Initially designed for simultaneous switch and lamp swapping, the PCB incorporates hollow copper rivets. Commercially available rivets inspired this design, but copper rivets are costly. Hence, alternatives were explored.
Among cheap solutions, corn eyes—low-cost copper rivets—can achieve the desired effect, though aesthetics may suffer. Another option is pin-style lamp holders found on Taobao, resembling common group keyboard lamp holders but without caps. After matching specifications, I tested and purchased several, finding them affordable for the two keyboards.
Additional lights were sourced from Taobao, including 234 square lamps, regular white lamps, and patch lights. Given the added acrylic layers, standard screws weren’t long enough, prompting a purchase of varying lengths.
The lamp holder’s size fits perfectly into the lamp hole, with a central circle ensuring proper alignment. Soldering after completion ensures optimal holder depth.
Final Assembly:
With all components in place, the keyboard functions flawlessly. Bottom lighting enhances the experience, especially with an aluminum sandwich shell for subtler illumination.
Keycaps:
I chose Wenruo’s original high-gray color-matched Russian sublimated character keycaps, totaling 153 keys. Their affordability, opacity, and vibrant colors suit most keyboards. For a triple-space key, I used a single double-space keycap.
After installing all keycaps, some exotic keycaps were swapped for special characters, and personalized keycaps were added where applicable. The ESC keycap was customized, and for triple-space keys, double-chrysanthemum DSA keycaps were utilized.
Conclusion:
The XD75’s greatest strength lies in its customizable 75-key layout, encouraging creative designs. Hot-swappable switches cater to those avoiding soldering or seeking this functionality. Despite its limitations—such as the unconventional layout requiring adaptation—it remains a flexible and innovative design.
However, challenges remain. Vertical and horizontal key placements may confuse beginners, necessitating relearning key positions. Keycaps also pose a challenge, requiring double-chrysanthemum keycaps for double-length keys. Creative solutions exist, such as using 2.25x and 2.75x keycaps to occupy five switch positions, proving adaptable with enough imagination. Ultimately, even without extensive tinkering, anyone can enjoy a custom keyboard.
Tantalum Alloys,Tantalum Turned Parts,Tantalum Alloy Target,Tantalum Alloy Wire
Shaanxi Xinlong Metal Electro-mechanical Co., Ltd. , https://www.cnxlalloys.com