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Logitech G900 Chaos Spectrum Gaming Mouse Review

By: Chad Sebring | Mice in Peripherals | Posted: Sep 15, 2016 4:19 pm
TweakTown Rating: 98%Manufacturer: Logitech

Inside the G900 Chaos Spectrum

 

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All but two of the feet need to be removed to get to this point, that and the removal of a few screws. Once that was done, the halves split apart easily, but there were the battery and thin ribbon cabling that we had to release. As you can see, there isn't all that much going on in the lower half, as most of the functionality is contained in the top section.

 

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The most obvious component in the top half is this 750mAh 3.7V Li-Po battery. Do not go poking at it with sharp objects, and this battery should last you for quite a long time, delivering many hours of usage between charges.

 

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We did try to disassemble the top but got to a point where too much force was required, so we stopped. However, near the front, we can see the Omron twenty million click switch under the left click button. From what we could see, the side buttons use pad style switches, but it is unknown as to what backs the DPI buttons on top.

 

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Logitech is the only company we know of that builds a scroll wheel assembly this beefy and well thought out. This is a 4-way module which uses springs at the front to keep the wheel centered. The white plunger near the back of it selects between segmented and free scrolling, and pad switches are used to back the side tilt movements.

 

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We had to remove the scroll wheel assembly to get this image, but after a couple of screws and a pin being pulled, it gets right out of our way. Under it, we found the Pixart PMW3366DM sensor in place and is the first time we have seen this exact sensor being used. It is said to be a more accurate version of the PMW3360 we saw in the Dream Machines mouse.

 

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The ARM Cortex processor is in control of all of the conversing that goes on between the mouse and the PC and is also where onboard profiles are stored, as well as the firmware. The 32-bit STM32L100 is made by ST Microelectronics and will have no issues delivering the performance this design requires of it.

 

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We would usually, at this point, show you the top of the Omron switch used on the right side of the mouse. However, it had to be inserted in the same manner as the left side did. This leaves us with no view of the painted text on the side, and because these switches are directly under the buttons, we cannot see the top either.

 

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After plugging in the mini-dongle into a spare USB 2.0 port, turning the switch under the mouse on, and no need to pair it, the Logitech G900 comes to life. By default, the color of both the DPI indicators and the G logo will revolve through a rainbow of colors, and can be set solid, or in a breathing mode. The DPI lights do not stay on long after adjusting them, and will be green and turn to one red bar when denoting the battery life.

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