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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 TT1224 (https://ww2.minicircuits.com/case_style/TT1224.pdf) following land-pattern PL-258, including GND-vias (https://www.minicircuits.com/pcb/98-pl247.pdf Footprint for Mini-Circuits cas HZ1198 (https://ww2.minicircuits.com/case_style/HZ1198.pdf) following land pattern PL-176, including GND vias (https://ww2.minicircuits.com/pcb/98-pl079.pdf Footprint for the sake of code complexity. Odd values are -=1 } module knurled_cyl(chg, cod, cwd, csh, cdp, fsh, smt) { cord=(cod+cdp+cdp*smt/100)/2; cird=cord-cdp; cfn=round(2*cird*PI/cwd); clf=360/cfn; crn=ceil(chg/csh); echo("knurled cylinder max diameter: ", 2*cird); if( fsh < 0 shape(fsh, cird+cdp*smt/100, cord, cfn*4, chg); module shape(hsh, ird, ord, fn4, hg) { x0= 0; x1 = hsh > 0 ? Ord : ird; y0=-0.1; y1=0; y2=abs(hsh); y3=hg-abs(hsh); y4=hg; y5=hg+0.1; if ( hsh >= 0 module knurled_finish(ord, ird, lf, sh, fn, rn [ ord*cos(lf2), ord*sin(lf2), h0], [ ird*cos(lf0), ird*sin(lf0), h1], [ ord*cos(lf1), ord*sin(lf1), h1], [ ird*cos(lf2), ird*sin(lf2), h1], [ 0,0,h2], [ ord*cos(lf0), ord*sin(lf0), h0], [ ird*cos(lf0), ird*sin(lf0), h1], [ ord*cos(lf1), ord*sin(lf1), h1], [ ird*cos(lf2), ird*sin(lf2), h1.

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