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Quad-Band GSM/GPRS module, 24x24x3mm, http://simcom.ee/documents/SIM900/SIM900_Hardware%20Design_V2.05.pdf Telit xL865 familly footprint, http://www.telit.com/fileadmin/user_upload/products/Downloads/3G/Telit_UL865_Hardware_User_Guide_r8.pdf ublox Sara GSM/HSPA modem, https://www.u-blox.com/sites/default/files/SARA-G3-U2_SysIntegrManual_%28UBX-13000995%29.pdf, pag.162 ublox SARA-G3 SARA-U2 GSM HSPA Footprint for Mini-Circuits case YY161 (https://ww2.minicircuits.com/case_style/YY161.pdf) using land-pattern PL-052, including GND-vias (https://www.minicircuits.com/pcb/98-pl258.pdf Footprint for Mini-Circuits case GP1212 (https://ww2.minicircuits.com/case_style/GP731.pdf) following land pattern PL-035, including GND-vias (https://www.minicircuits.com/pcb/98-pl258.pdf Footprint for the arrow's head size. // Scale factor for the arrow's shaft size. Engraved_indicator_shaft_scale = 1.5; // How much horizontal space needed for left-hand and right-hand sub-panels left_panel_width = 16.5+16.5+10.5; //two knob, one jack, plus space between them right_panel_width = width_mm - thickness*2.5 - tolerance*6; out_row_1 = v_margin+12; out_row_2 = working_increment*1 + row_1; row_3 = working_increment*2 + row_1; row_4 = row_3 + vertical_space/7; row_7 = row_6 + vertical_space/7; cv_in_1a = [left_col, row_6, 0]; cv_1b_atten = [right_col, row_1, 0]; square_out = [third_col, fourth_row, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_2, 0]; triangle_out = [third_col, fourth_row, 0]; triangle_out = [third_col, fourth_row, 0]; pwm_in = [input_column - h_margin/2, row_1, 0]; fm_pot = [input_column - h_margin/2, bottom_row, 0]; fm_in = [h_margin+working_width/8, row_2, 0]; pwm_in = [width_mm - h_margin - working_width/8, row_4, 0]; left_rib_x = thickness * 1; right_rib_x = width_mm - h_margin; working_height = height - v_margin - title_font_size*2; working_width = width_mm - h_margin; cv_in = [h_margin, row_1, 0]; left_rib_x = thickness + 9.5/2 + tolerance*2; //three knobs plus space for everything, lining things up more Make slider and LED footprints match current OpenSCAD model Checkpoint after fixes but before shrinking boards Merge issues to be image of the sustain (inspired by but simplified from Benjamin AM's design). Looping mode, allowing attack-decay envelopes.

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