Inside the Hermes P3
Removing the keycaps on the Hermes P3 should be done carefully. This is not due to the low-profile nature, but the way in which the switches and attachment points are designed. While molding the caps in white plastic, we see they include the pair of switch clips in the center, which locks into the top of the switch. The larger keys also have a pair of plastic bump stops which hit the brushed metal plate, as well as clips for torsion bars, out near the edges.
The switches found on our Hermes P3 are blue, clicky, and require a bit of force to actuate. It is easy to see where the caps lock into the switch plungers, while the body of them are clear to allow more LED light to pass through. We can also see the exposed torsion bar, and this is found on nay switch more than two caps in size.
After unscrewing about a dozen screws from the top plate, we were able to open up the Hermes P3. To add rigidity, the bottom frame section has raised sections to support the plate, while the top component of the frame is just a trim piece, to bridge the gap from the plate to the flat lower section.
Gamdias chose a blue PCB to mount all of the switches and LEDs too. There are resistors between all and a pair of clean solder points below each of the switches. The LEDs are mounted above each switch in four points, and we see no signs of flux, just a slight bit of dust.
At the beginning of this review, we made mention of the use of an ARM Cortex TM-M3 with its 72KB of onboard storage. On the PCB, we find the HT32F52352 from Holtek, and from what we know of Gamdias keyboards and what HERA brings, this is enough to do what is asked of it.
To show the capability, we put the Hermes P3 in wave mode. All of the colors will appear as the wave moves left to right, slowing running through the RGB scale. All of the lock indicators are backed with white LEDs, and stand out easily in your peripheral vision to know they are activated.
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