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Mionix Castor Optical Gaming Mouse Review

By: Chad Sebring | Mice in Peripherals | Posted: Oct 23, 2015 3:50 am
TweakTown Rating: 95%Manufacturer: Mionix

Inside the Castor




Starting the tear down of the Castor, we find a PCB in the top half for the DPI and side button functionality, and all the rest of the business is handled on the one layer of PCB in the lower half of the mouse.





For the side buttons, we found red TTC switches that are pretty easy to push and offer a faint click. The DPI switch uses a white TTC switch, and it too is softer to use but offers a much more audible click when used.




Under the left click buttons, we find an Omron D2FC-F-7N, but not the usual five million click versions, Mionix stepped up the game and offers twenty million click versions in the Castor.




The brains of the Castor are this ST Microelectronics STM32L100 ARM 32-bit processor. This is considered the value line of 32-bit ARM MCUs, but it is way more than enough to control this mouse and cover the features offered in this design.




Mionix has chosen the Pixart PWM3310DH-AWQT optical sensor to track the movements here. This is a 30G optical sensor that offers the Castor all of the earlier tracking abilities as well as that astounding 10,000 DPI.




We find that the right click button is also backed with a twenty million click Omron switch. Behind it we see that the scroll wheel switch is enclosed but is also made by TTC, and there is a second tiny PCB in this design, but only to deliver LED light into the middle of the wheel.




With the castor back and ready for action, we can now see just how well that PCB drops light into the center of the scroll wheel when it is powered. Also, remember that this light can be changed to any other color, and is separated in control with the next one you see.




Where the scroll wheel LED is more of an amber color, the Mionix logo on the heel boots up in this light green color. This too can be changed, and as you can see, both LEDs do not have to match each other.

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