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5x7 70% Split Ortholinear keyboard, more keys for more fun!
New! The now available Viterbi Rev. 2.0 PCBs now feature in-switch LED support!
Note the build for the Rev. 2.0 is a bit different than the previous revision. Both of the Pro Micros are oriented the same way with the flat side of the Pro Micro facing the bottom of the case, similar to how it's done with the Quefrency. Revised build guide currently in progress.
The PCB Kit includes the following:
2 Viterbi PCBs
2 Push buttons for reset
2 4.7kΩ resistors for I2C
2 TRRS jacks (no need to buy separately)
70 1N4148 diodes
LED support kit already included
2 1kΩ resistors
Each half of the board is a 5x7 matrix, but there is the option to have a 2u key in the lower left and right corners in place of 2 1u keys. The spot for the 2u has holes for Cherry PCB mounted stabilizers.
There's also a spot on the PCB for a pushbutton switch to reset the Pro Micro for flashing. No more taking a wire/tweezers/screwdriver to jump the Reset and GND pins!
As usual with these split ortho boards, we had to christen the board with a term from bakingpy's past. He used to implement the Viterbi Algorithm a number of times to take 2N received bits from a communications signal and figure out the original N bits it was encoded from. So here, signals from 2 board halves, decoded into one board, it's like this thing named itself.
The Viterbi uses QMK for its firmware, and the code for it has been merged into the main codebase. You can find it here: QMK - Viterbi directory.
Here's the case files for a sandwich-style case are still under development.
The kerf setting was set to 0.15mm for use with Lasergist and Ponoko.
Items needed for build
35 Diodes per PCB (through-hole and SMD diodes supported)
The build guide is identical to that of the Nyquist except for the additional column, so you can use this guide. For the new Rev. 2.0 PCB, note that both of the Pro Micros are oriented the same way with the flat side of the Pro Micro facing the bottom of the PCB.