BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/Chicago BEGIN:DAYLIGHT DTSTART:20250309T030000 TZOFFSETFROM:-0600 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:CDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20251102T010000 TZOFFSETFROM:-0500 TZOFFSETTO:-0600 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:CST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20250427T153131Z UID:2CC96E48-4158-4182-82EE-B86E32A12835 DTSTART;TZID=America/Chicago:20250424T113000 DTEND;TZID=America/Chicago:20250424T130000 DESCRIPTION:High resolution absolute rotary encoders are essential to preci sion applications like tracking telescopes\, semiconductor manufacturing\, low-tolerance machining\, and robotic mechanisms. However\, high-end enco ders are extremely expensive ranging from hundreds to thousands of dollars for those with 20 to 22+ bit resolution\, respectively. The cost and prop rietary information barriers of these encoders prevent independent researc hers\, small institutions\, and others with limited budgets from researchi ng\, developing\, and using precision equipment.\n\nTo address this issue\ , a novel\, low-cost\, customizable\, open source\, high resolution\, abso lute magnetic rotary encoder was invented with a similar performance and e nvironmental robustness to the high-cost counterparts. The final engineeri ng goal was to create a base prototype\, easily modifiable to further incr ease resolution\, for less than $40\, with a calibrated 20-bit resolution\ , sub 150 arcsecond accuracy\, sub 3-in diameter\, and ability to compensa te for fluctuating temperatures and external magnetic fields.\n\nAfter muc h iteration and tuning\, the final design successfully had a 20-bit resolu tion with detectable +-10 microtesla changes per tick. The average accurac y was successfully under 150 arcseconds at 0.0384 degrees with a standard deviation of 0.0308 degrees in comparison to the calibration encoder. Temp erature\, external magnetic field\, and encoder mounting compensations wer e all successfully integrated. The unit cost was $24.84\, and the diameter was 2.17 inches. Finally\, high-precision robotics is now accessible\, an d robotics and manufacturing companies can save millions and reduce prices with the successful encoder design made open source for any person or ent ity to replicate\, modify\, and use.\n\nSpeaker(s): Frank Lucci\, \n\nAgen da: \nCome hear from the winner of LSS RAS Special Science Fair award for "Outstanding Robotics & Automation Project - Senior Division"!\n\nCabos’ Pizza from TechPort will be provided. Students are free.\n\nRoom: Confere nce Room\, Bldg: SAMSAT Education Center\, 5035 SW 36th St\, San Antonio\, TX\, San Antonio\, Texas\, United States\, 78226\, Virtual: https://event s.vtools.ieee.org/m/480258 LOCATION:Room: Conference Room\, Bldg: SAMSAT Education Center\, 5035 SW 36 th St\, San Antonio\, TX\, San Antonio\, Texas\, United States\, 78226\, V irtual: https://events.vtools.ieee.org/m/480258 ORGANIZER:k.nickels@ieee.org SEQUENCE:21 SUMMARY:SubArc: An Inexpensive\, High Resolution\, Open Source\, Absolute M agnetic Rotary Encoder URL;VALUE=URI:https://events.vtools.ieee.org/m/480258 X-ALT-DESC:Description: <br /><div>\n<div dir="auto">High resolution absolu te rotary encoders are essential to precision applications like tracking t elescopes\, semiconductor manufacturing\, low-tolerance machining\, and ro botic mechanisms. However\, high-end encoders are extremely expensive rang ing from hundreds to thousands of dollars for those with 20 to 22+ bit res olution\, respectively. The cost and proprietary information barriers of t hese encoders prevent independent researchers\, small institutions\, and o thers with limited budgets from researching\, developing\, and using preci sion equipment.&nbsp\;</div>\n<div dir="auto">&nbsp\;</div>\n<div dir="aut o">To address this issue\, a novel\, low-cost\, customizable\, open source \, high resolution\, absolute magnetic rotary encoder was invented with a similar performance and environmental robustness to the high-cost counterp arts. The final engineering goal was to create a base prototype\, easily m odifiable to further increase resolution\, for less than $40\, with a cali brated 20-bit resolution\, sub 150 arcsecond accuracy\, sub 3-in diameter\ , and ability to compensate for fluctuating temperatures and external magn etic fields.&nbsp\;</div>\n<div dir="auto">&nbsp\;</div>\n<div dir="auto"> After much iteration and tuning\, the final design successfully had a 20-b it resolution with detectable +-10 microtesla changes per tick. The averag e accuracy was successfully under 150 arcseconds at 0.0384 degrees with a standard deviation of 0.0308 degrees in comparison to the calibration enco der. Temperature\, external magnetic field\, and encoder mounting compensa tions were all successfully integrated. The unit cost was $24.84\, and the diameter was 2.17 inches. Finally\, high-precision robotics is now access ible\, and robotics and manufacturing companies can save millions and redu ce prices with the successful encoder design made open source for any pers on or entity to replicate\, modify\, and use.</div>\n</div><br /><br />Age nda: <br /><p>Come hear from the winner of LSS RAS Special Science Fair aw ard for "Outstanding Robotics &amp\; Automation Project - Senior Division" !</p>\n<p><br>Cabos&rsquo\; Pizza from TechPort will be provided. &nbsp\;S tudents are free.</p> END:VEVENT END:VCALENDAR