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The is a legendary open-source Morse code keyer project based on Arduino, designed by Anthony Good (K3NG). It is known for its massive feature set, including Winkeyer emulation , LCD support, and CW decoding. Core Hardware Components A basic K3NG build typically requires the following: HL2 and OpenCWKeyer K3NG Winkeyer - Google Groups
: Often includes a "Command" button to enter programming mode via the paddles. Advanced Hardware Options k3ng keyer schematic