This is my ultimate drawing macropad.

• Seeed Studio XIAO RP2040
• EC11 rotary encoder with push switch
• 128×32 OLED
• 5× mechanical switches

• Zoom in/out using the encoder
• Reset zoom with encoder button
• Undo / Redo / Brush / Eraser / Color Picker keys
• OLED shows current action (Zoom +, Undo, Brush, etc.)

The macropad runs on CircuitPython.

• Encoder Clockwise: Zoom In (CTRL +)
• Encoder Counter‑Clockwise: Zoom Out (CTRL -)
• Encoder Button: Reset Zoom (CTRL 0)
• Key 1: Undo (CTRL Z)
• Key 2: Redo(CTRL Y)
• Key 3: Brush
• Key 4: Eraser
• Key 5: Color Picker

The OLED displays the current action.

• 1× Seeed Studio XIAO RP2040
• 1× EC11 encoder
• 1× OLED displey
• 5× switches
• 5× keycaps
• 4× M3 screws
• 1× own PCB