https://www.michellehuddleston.com/work daily 1.0 2025-12-19 https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1631807936665-QC9CP7B8JVR5PA10F8S5/Light+Sensor+Gif+Mid+Res.gif Portfolio - light sensing For fun, I tested my circuit’s built-in light sensor to detect “distance”. The sensor was sandwiched between my belly and the belt. When I inhaled, the light sensor moved closer to the belt and reflected as “brighter”. This worked surprisingly well but was very awkward to wear. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1631767148748-PG94CADRYBVG7VJGM1WP/Vex+Twist+Gif+low+Res.gif Portfolio - More twists! I added more twists to increase power transmission. Initially I used an off-the-shelf lead screw but motion was slow due to numerous required motor turns to move up and down. I made a custom screw with 8 twists. This had more torque than the 180˚ twist but still stalled when “inflating” the balloon. I experimented with using a continuous servo and a 3D printer’s stepper motor. Both were loud. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1631769596732-KTQRX15MZPAULBCVDFWP/Slope+Compare+Expanded+GIF+Mid+Res.gif Portfolio - Compare Slopes Initially I compared slope every second to determine whether it was rising or falling. I later realized that voltage slope spiked at the moment of inhale/exhale. The code checks for spikes above threshold slopes and determines whether the user is inhaling or exhaling. When exhaling, LED color progresses towards red. When inhaling, LED color progresses towards purple. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1631808453855-DJGVBDTVL3ZK3VRT4QX9/Smaller+Pressure+Sensor+GIF.gif Portfolio - Alternate Pressure sensing The “final belt” described above had a narrow sensitivity range of ~1V. I made Plusea’s belt in hopes of increasing sensitivity to 3V. This design differs from the “final belt” in that it uses conductive thread, rather than fabric, with velostat sandwiched between 5 small “contacts”. The signal was noisier, however, and not useful for detecting small resistance changes. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1631807803842-YU8BROYV4LLBNOHVD8Y3/Pump+Tripod+GIF+Mid+Red.gif Portfolio - Pneumatics (Final design) The current design (inspired by Adafruit) uses a small DC motor to compress air so it fills a party balloon. It releases air through a valve. The setup is simple, but the motor is loud. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1631807866912-HCAW64NE3X55ALN3NFFT/Stretch+Sensor+Gif+Mid+Res.gif Portfolio - Tension sensing Inspired by Erin_gee, I used a conductive rubber that changes resistance when stretched. Unfortunately measurements were inaccurate due to the rubber “remembering” its shape, resulting in high hysteresis. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1631770211785-Z7NXZ1PMUW5ROBRT7LHD/Voltage+description.001.jpeg Portfolio - Raw Voltage Signal The raw voltage signal follows a general sinusoidal trend in which the slope of voltage changed from positive to negative on inhale and from negative to positive on exhale. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1631810736933-II7IVNTE65G8CCKQMC3H/Scissor+Jack+Gif.gif Portfolio - Scissor Jack My 3D printer was broken, so I CNC cut a scissor jack. In theory a 180˚ servo would propel the jack vertically, but my design was flimsy. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1631767425664-5OBFNDQ2YEYAYCFGIA6Q/Current+Belt+Gif+Mid+Res.gif Portfolio - pressure sensing (final belt) I followed push_reset’s intructable for making a flex sensor, which consists of Velostat, a material that changes resistance under pressure, sandwiched between 2 pieces of conductive fabric. Resistance (and voltage) drops when an inhaling belly presses against the sensor. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1631766236839-1CY9Z7IWS88GFOIHWUM7/180+Twist+Gif+Low+Res.gif Portfolio - 180˚ Twist I initially wanted to use a high-torque, high-accuracy servo, which is limited to 180˚ of motion, so I modeled a half-turn screw. This design lacked the torque to “inflate” the balloon and the servo was loud. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1631760156127-YZJ1VFP7MO03EWNB4YGX/floor+of+drawings.jpg Portfolio - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1632056838042-0H79D9WEL1R7BHHYJULL/Vislab+Rattler.jpg Portfolio - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1632054485210-B52E77PRPY0BUYVLA5MY/rattler+pro.jpg Portfolio - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1632056855590-PCXL95ZDULXMVBGQALVS/Ratter+Surround.jpg Portfolio - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1632066721624-NMKWBPJ6C3AA6QSMRPRI/Desks.jpg Portfolio - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1632066253302-JNPBG9S5I6SEB2505IUZ/Desk+1a.jpg Portfolio - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1632066279901-8184Z01GACEFB8WYAA6F/Desk+2.jpg Portfolio - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1632072525332-S7RH73YY4LWSIHLCJ987/Desk+in+use.jpg Portfolio - Make it stand out Desk in active use after 1.5 years. I sit on a yoga block. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1632591063297-WJN1O9UNJSVYA3K7HVIP/Watch+Assembly.jpg Portfolio - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1654890190416-G6J7W1GBOTK51VDONHA4/4sTrackerGIF1.gif Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1654890194552-AIJM7Q6G3DX3MMD3CRTI/4sTrackerGIF2.gif Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1654893714554-BTG79W7Y7DX755D5N471/camera+insides.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1654895108070-1M72T2SAF9FG3NIQHO2Q/KinectHiGIF.gif Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1654895119950-RUD1SL1DHGO8E2LTGZET/faceTrackGif.gif Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1654895093835-972CYISC5S2JJCHBPNFK/Marien+feedback+GIF.gif Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/13ab40d4-6a40-4145-a94a-01cd9a25fb65/IMG_0955.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1682812540064-5S5U14NN6MW0HRI2CRXS/IMG_0959.jpg Portfolio - Sends texts when no motion detected https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1682812499302-RPYBXK7UDSAS4IX9L2M0/death+detect+motion+gif.gif Portfolio - Motion detected I see you! LED shines green https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1682812851724-47EP6NL3QNSPWEWADGTJ/death+on+sat+gif.gif Portfolio - Powered on and connected to wifi https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1706595850111-SIFRE4XXH8Z01WF3PPBT/IMG_0447.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1706595708976-WPYGXYE25J77MFM90KC2/IMG_0398.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1706595706455-HKIAKUAD0N2O67F7V0IK/IMG_0428.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1706595719898-6ON4S429JIYF7DJEOCRC/IMG_0350.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1706595715481-NUK0EF8S3GK952RD3VI2/IMG_0366.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1706595709254-XWWGD102PNCZDMGXKLD4/IMG_0379.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1706595713383-V2UFHSKGE9UU3P3NY3KV/IMG_0372.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1706595706108-Z4OPB452QCAZ7IE8QEKY/IMG_0446.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1706595716997-JGQBIWACYSRSQOP7HBIC/IMG_0351.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1706595712786-J7H7B7BH9DW8L2LCTK3U/IMG_0368.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1609891292998-KI58605HCUSX7YVQ3SH4/Mountain%2BMan.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1609955691699-P9I4B54ZLOTJK9H7NH5V/double%2Brainbow.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1610160243668-2EV1N61852JX09F8SSQ6/Thriller+Thumbnail.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1631759671746-8E1VN3DLWFG1OL684KIA/IMG_6796.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1632057006020-VBD2TVLTA69XZPF8QLUB/rattler+pro.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1632062135087-40UU9NCE1PID0L4Y3RV8/Pamela+16x9+2+Thumbnail.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1632072623926-9MUVE3I3T149VWKQW65O/Desk+in+use.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1632593967976-O68KBTWFO9DN1XNEVGXX/Mantra+Watch+Thumbnail+2.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1632615958446-64CTB1W1WB0QFFYFEBWB/Papaya+Me.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1633018040992-FKIXAF3H6K5JCHEP0KXK/Depositphotos_4467710_m-2015.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1634049127126-1GSNTVQ7HT2K9BHFYXUN/Breath+Lamp+THUMBAIL+2.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1634049333599-DUBFOMM7N3LZOL2G3KFX/Mood+Ring+Thumnail.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1635108789332-C86FBBXS6EA5NVUI256X/PO+33+HOUSE+JAM+WEB.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1654884317401-VDONWIBKJP4KX1DKDLDX/Head+Thumbnail.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1654896408676-MPRTEIMOFCAPSXML866Q/Biology+Abstracted+4+Thumbnail.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1655041578076-DPD1500G8YVLE0EBFJPC/double+rainbow+crop.jpeg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1655041746873-DYGYEQLLN300P1DS4FY5/Your+Inner+World+is+Showing.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1682800302820-YVT823VVMGQ6X9KBRPFB/IMG_0955.jpg Portfolio https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/1706596029859-2GZOET0EGFJOE3JT2KGD/IMG_0398.jpeg Portfolio https://www.michellehuddleston.com/about daily 0.75 2025-02-10 https://www.michellehuddleston.com/contact daily 0.75 2021-01-09 https://www.michellehuddleston.com/resume daily 0.75 2025-12-19 https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/3cc42237-101f-4bd3-9521-bb0ec08067eb/mfh+resume+sp.jpg Résumé - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.michellehuddleston.com/store daily 0.75 2024-08-18 https://www.michellehuddleston.com/store/tz558bc4z6n7pp7yirjnd7b2f2t3uw monthly 0.5 2024-08-18 https://images.squarespace-cdn.com/content/v1/5ff1ecbffbf14e2399f76494/4f4e4702-f273-4462-808c-ce71dbf80ac9/IMG_5433.jpeg Store - wishing for signs of you