# Keymap The keymap is a very simple set of instruction for your keyboard. An example keymap for a 4x3 macro pad ```python keymap = [ [ [KC.GESC, KC.A, KC.B], [KC.C, KC.D, KC.E], [KC.F, KC.G, KC.H], [KC.MO(1), KC.I, KC.J], ], [ [KC.TRNS, KC.K, KC.RESET], [KC.L, KC.M, KC.N], [KC.O, KC.P, KC.Q], [KC.TRNS, KC.R, KC.S], ], ] ``` # Handwire When hand wiring custom keyboards, you will have to set the board up so KMK knows where things are. This is the basic SETUP. ```python from kmk.consts import DiodeOrientation from kmk.keycodes import KC from kmk.pins import Pin as P from kmk.entrypoints.circuitpython_samd51 import main from kmk.firmware import Firmware cols = (P.D11, P.D10, P.D9) rows = (P.A2, P.A3, P.A4, P.A5) diode_orientation = DiodeOrientation.COLUMNS ``` The main things that need set up are: 1. Your microcontroller will need to be set here. ```python from kmk.entrypoints.circuitpython_samd51 import main ``` 2. Set your row and column pins up ```python cols = (P.D11, P.D10, P.D9) rows = (P.A2, P.A3, P.A4, P.A5) ``` 3. Set your diode orientation ```python diode_orientation = DiodeOrientation.COLUMNS ```