TITLEBAR##$cfgWebTitle - Metal Detectors - Projects - PI-1 VAR1##$cfgBasePagesUrl/metdet/projects/pi1 VAR2##$cfgIndexScript?page=metdet/projects/hammerhead&file=index.dat TITLE##PI-1 CATEGORY##by Carl Moreland TEXT## Notice!!! This project has been renamed "Hammerhead", and the latest schematics and PC boards can be found on the Hammerhead project page. PCBs for PI-1 are no longer available. END SPACER##10 LINKS PI-1 Article##$var1/pi1_300.pdf##PI1_0.8pdf-300##_top##(PDF-1326K, 300dpi) - Rev 0.8 -- 25 May 2003 PI-1 Article##$var1/pi1_150.pdf##PI1_0.8pdf-150##_top##(PDF-474K, 150dpi) - Rev 0.8 -- 25 May 2003 END SPACER##10 TEXT##The article now has some shots of o-scope waveforms. The following documents are color PDFs, whereas the ones above are B&W. LINKS PI-1 Article##$var1/pi1_300c.pdf##PI1_0.8pdf-300c##_top##(PDF-2238K, 300dpi) - Rev 0.8 -- 25 May 2003 PI-1 Article##$var1/pi1_150c.pdf##PI1_0.8pdf-150c##_top##(PDF-725K, 150dpi) - Rev 0.8 -- 25 May 2003 END SPACER##10 TEXT##Here is the main schematic, PCB layout, & parts placement diagram. LINKS PI-1 Schematic Page 1##$var1/pi1-p1.pdf##PI1-1pdf##_top##(PDF-36K) - Rev B3 -- 12 Feb 2003 PI-1 Schematic Page 2##$var1/pi1-p2.pdf##PI1-2pdfgif##_top##(PDF-60K) - Rev B3 -- 12 Feb 2003 PI-1 Pcb Layout##$var1/pi1pcb.gif##PI1PCBgif##_top##(258K GIF, 600dpi) PI-1 Parts placement##$var1/pi1parts.pdf##PI1PartsPdf##_top##(PDF-424K) END SPACER##10 TEXT##"Option 1" is a simplified schematic that uses a NE5534 in inverting mode, and VCO audio. Look at this if the main schematic leaves you scratching your head! LINKS PI-1/Opt1 Schematic Page 1##$var1/pi1opt1-p1.pdf##PI1Opt1-1pdf##_top##(PDF-33K) - Rev B3 -- 12 Feb 2003 PI-1/Opt1 Schematic Page 2##$var1/pi1opt1-p2.pdf##PI1Opt1-2pdfgif##_top##(PDF-50K) - Rev B3 -- 12 Feb 2003 PI-1/Opt1 Parts placement##$var1/pi1opt1parts.pdf##PI1Opt1PartsPdf##_top##(PDF-432K) - Revised 18 Feb 2003 END SPACER##10 TEXT##"Option 2" is a simplified schematic that uses a NE5534 in inverting mode, and non-VCO audio. Even simpler than Option 1. LINKS PI-1/Opt2 Schematic Page 1##$var1/pi1opt2-p1.pdf##PI1Opt2-1pdf##_top##(PDF-36K) - Rev B3 -- 8 May 2003 PI-1/Opt2 Schematic Page 2##$var1/pi1opt2-p2.pdf##PI1Opt2-2pdfgif##_top##(PDF-46K) - Rev B3 -- 8 May 2003 PI-1/Opt2 Parts placement##$var1/pi1opt2parts.pdf##PI1Opt2PartsPdf##_top##(PDF-526K) - Revised 8 May 2003 END SPACER## HR##5###FFCC33 SPACER## #TEXT## #Comments/feedback/notes: #END