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EpicGear DeFiant Mechanical Gaming Keyboard Review

By: Chad Sebring | Keyboards in Peripherals | Posted: Apr 23, 2016 5:50 pm
TweakTown Rating: 98%Manufacturer: EpicGear

Inside the DeFiant




The first thing we did was remove some of the black painted key caps, which are molded in white plastic first. Under them, we expose the purple EpicGear switches and LED lenses. We can also see that with this exposed design, the torsion bars are above the plate, and need extra care when removing the large key caps because of this.





Removing screws from the bottom of the keyboard allows us to remove the top panel. What we find under that top panel is that we have all of the switches clipped into the top plate, with just contacts below them, no wiring made directly to the switches.




Below the top panel is the main PCB. Here we find a bunch of surface-mounted LEDs and a pair of contact pads for each switch to function by.




Moving in a bit closer, it is much easier to see how this removable switch idea works. While everything is soldered on the back side, it is just as clean looking as this side of it is, and there are bunches of the square gold contacts, which allows for the swapping of switches with simplicity.




This Holtek HT1632C is not the MCU in play with this design. It is the memory mapping LED display controller, which allows for the per-key programmability of the switch LEDs.




It is the above Holtek HT32F1755 that is used to control everything. This is a 32-bit ARM Cortex M3 MCU that will take all of the key presses and send them to the PC with a 72MHz clock and 128-bit of memory.




Once we had the DeFiant all back together, we powered it up via the USB 2.0 connection and are delivered a fully backlit keyboard ready to do whatever we desire. Also, no matter what you try, the LEDs will always be white in this design.

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