A trill, generally three very fast notes on repique/caixa, two or three for surdos Add schematic, start on PCB with exploratory 8hp layout Add schematic, start on PCB 7f9b624c8e tweaks layout with input from sam format (units 2) (units_format 1) (precision 4 (style (thickness 0.1) (arrow_length 1.27) (text_position_mode 0) (extension_height 0.58642) (extension_offset 0) keep_text_aligned (text "Kassu used 1 µF \npolyester film looks much \nbetter. Low-Power, Quad-Operational Amplifiers, DIP-14/SOIC-14/SSOP-14 Operational amplifier, DIP-8100V 0.15A standard switching diode, DO-35"/>