The disparity across the main keys of the keyboard is significant and users with exceptional tactile senses will actually discern the difference between certain keys. The results that we received from the testing of the Redragon Devarajas K556 are rather mediocre but consistent with those of keyboards using OUTEMU switches that we reviewed in the past. Still, very low figures on medium sized keys, such as the Shift and Enter keys reveal design issues and can easily be perceptible by the user. For this reason, we do display the force required to actuate every key but we only use the results of the typically sized keys for our consistency calculations. This is natural, as the size and weight of the keycap reduce the required actuation force. Note that large keys generally have a lower actuation force even if the actuation point is at the dead center of the key. Enter, Space Bar, etc.), the measurement is taking place at the center of the key, right above the switch. The machine we use for our testing is accurate enough to provide readings with a resolution of 0.1 cN. It is worth noting that there is typically variance among keyboards, although most keyboard companies will try and maintain consistency - as with other reviews, we're testing our sample only. Greater differences are likely to be perceptible by users. A high-quality keyboard should be as consistent as possible, with an average actuation force as near to the manufacturer's specs as possible and a disparity of less than ☑0%. The conversion formula is 1 cN = 1.02 gf (i.e. Some companies use another figure, gram-force (gf). The actuation force is measured in Centinewton (cN). It can also reveal design issues, such as the larger keys being far softer to press than the main keys of the keyboard. By measuring the actuation force of every key, the quality and consistency of the keyboard can be quantified. In order to test the quality and consistency of a keyboard, we are using a texture analyser that is programmed to measure and display the actuation force of the standard keyboard keys. We find it extremely unlikely that any advanced gamer or professional would be able to make practical use of the software - it is so basic that it may be useful to only a handful of users, under specific usage scenarios. The macro recorder only records keyboard keystrokes, with the sole advanced option being to include the actual delays or not. The only options are the remapping of a key to another key or multimedia command or the use of a programmed macro. The software offers per-key programmability but is very basic. Everything is packed into a single screen, from the left side of which the user can choose one of the 20 lighting effects, adjust its direction, brightness, and speed. Nevertheless, it does allow for the selection of the lighting effects and the per-key programming of the keyboard and it can store up to three layout profiles. The software is a mere 4 MB download from the manufacturer’s website and is so basic that does not even have a name – it is just “keyboard software”. The Redragon Devarajas K556 is a fully programmable mechanical keyboard, which is exciting for a keyboard at this price range – until one finally gets to trying out the software.
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