11/19/2023 0 Comments Custom osu keypad replaceable switched![]() In the event that you would like to use an atmega16u2 instead of atmega32u2, you can just do that, no PCB edits is required. Rearranging the equation, we can find the external load capacitor value:įor example, if the crystal load capacitance is 15pF, and assuming Cstray=2pF, then: Calculate the new values for the caps of the new crystal accordingly using this formula:ĬL = ((CX1 x CX2) / (CX1 + CX2)) + CstrayĬstray: The stray capacitance in the oscillator circuit, which will normally be in the 2pF to 5pF range.Īssuming that CX1=CX2 then the equation becomes: For any parts that are unavailable, especially the crystal and/or the capacitors for the crystal, choose something else that's also 16Mhz with another capacitive load value that's available. The BOM and POS files in PCB files/Gerber and JLCPCB files are generated for easy ordering from JLCPCB. To change RGB modes, hold down the first button (first button on the far left) while plugging in the keypad. Upon plugging in, you will be booted into Layer 0 where it outputs Z, X and C (play mode). You will have to do this each time you want to use VIA. To use VIA with the keypad, go to settings tab in the VIA software > enable 'Show Design Tab > go to Design tab > Load Draft Definition > Upload the 'load_in_VIA.json' file from qmk-unnamed3kv2-source folder. QMK source files are found in the firmware folder. ![]() ![]() This is not pushed into QMK or VIA's repo. I'll update this page and/or fix any issues raised. However if you've tried producing this and everything checks out (it should, changes were very minor) please send me an email at or contact me somehow. This means that what is put up here is untested.
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