https://video.jeffmcbride.net/about/instancehttps://video.jeffmcbride.net/videos/localhttps://video.jeffmcbride.net/w/wrsMyasJeySPU69xMyjtJDhttps://video.jeffmcbride.net/lazy-static/thumbnails/ae96d628-7cbf-4ed6-9a64-0b33b08f679a.jpgGauss Speedway Rev 3 - White/Green TrainQuick video of the final version of [Gauss Speedway](https://jeffmcbride.net/gauss-speedway), in black. I've been making a bunch more cars too, so I had more than usual on hand. https://video.jeffmcbride.net/static/streaming-playlists/hls/f68042da-ee7b-411e-8f33-07a0de178125/428045dc-8643-465e-82e6-562637e455fa-master.m3u8https://video.jeffmcbride.net/videos/embed/wrsMyasJeySPU69xMyjtJD240382023-02-05T05:49:11.661ZmagnetsElectronicsGaussSpeedwayYESProjectsNOhttps://video.jeffmcbride.net/w/2f3YRrP6vsQqTnSywe7QVNhttps://video.jeffmcbride.net/lazy-static/thumbnails/7c18e969-3137-4367-a58d-57e19b98cafe.jpgMagnet Stepper Demo PCBWhen showing people the Gauss Speedway, sometimes they ask how it works. I made this tiny, manually controlled version with LEDs to demonstrate. The lit arrows show which traces are active, and which direction the current is flowing. Each button enables one of the four possible steps, so when you press them in sequence it moves the magnet, just like how a stepper motor works.https://video.jeffmcbride.net/static/streaming-playlists/hls/0a0f6358-19cf-4066-9748-43f1aba06a70/3d9457c7-0d3f-43be-91ba-34d86b08a991-master.m3u8https://video.jeffmcbride.net/videos/embed/2f3YRrP6vsQqTnSywe7QVN250492023-04-05T02:47:26.786ZYESProjectsNOhttps://video.jeffmcbride.net/w/a87mwzX8YvrCmZ1TDxsNcshttps://video.jeffmcbride.net/lazy-static/thumbnails/97a9362d-87b7-4c0a-84a1-5e82984f17aa.jpgPyrolyticCarbonSheetsTrying out some carbon sheets for their diagmagnetic properties. These are both of dubious provenance, and I suspect that at least in the case of the thick sheet, it is plain rather than pyrolytic graphite. I'm not able to see any sign of clear layers in the sheet. https://video.jeffmcbride.net/static/streaming-playlists/hls/49e05ebd-0910-4c54-986f-b408ddd083f0/557b6865-7fa9-4267-b9e6-d090c3980474-master.m3u8https://video.jeffmcbride.net/videos/embed/a87mwzX8YvrCmZ1TDxsNcs1170162023-11-13T00:14:44.722ZdiamagneticmagnetsYESProjectsNOhttps://video.jeffmcbride.net/w/fjGXbmPiiYbLuproxQYWRGhttps://video.jeffmcbride.net/lazy-static/thumbnails/69b39309-2a09-4812-a870-b1bded140114.jpgXY Magnet Array Actuation TestFirst testing of a 5x5 1/8" magnet array on the finer pitch PCB with X and Y linear actuators. I'm using the electronics on a Guass Speedway to drive it, which means I can only control a single axis at a time at the moment. It can (just barely in the case of the Y axis) carry half of a microscope slide -- with the whole slide it could barely move at all, in the current configuration anyway. https://video.jeffmcbride.net/static/streaming-playlists/hls/73fc90f7-0459-42cd-a3bc-569eb2bdd9fa/708744cd-983b-465d-93a0-e74a95a7119d-master.m3u8https://video.jeffmcbride.net/videos/embed/fjGXbmPiiYbLuproxQYWRG620382023-11-18T22:13:11.301ZYESProjectsNOhttps://video.jeffmcbride.net/w/ty3WTJjFK9wgdJzkTFdFMChttps://video.jeffmcbride.net/lazy-static/thumbnails/1ce6770d-96a5-43bb-bc24-b4068ba31d2f.jpgcourse_25magnets_2slidesMoving two slides with 25 3.175mm magnets. https://video.jeffmcbride.net/static/streaming-playlists/hls/df205c39-6185-4cfd-8ae3-7b158c4f3042/40eed85a-8198-4f75-8a85-f10fb4cab4a7-master.m3u8https://video.jeffmcbride.net/videos/embed/ty3WTJjFK9wgdJzkTFdFMC210572023-11-19T05:37:51.979ZYESProjectsNOhttps://video.jeffmcbride.net/w/qgJoEM2iXvaUTqEFmjDKNZhttps://video.jeffmcbride.net/lazy-static/thumbnails/9d6f0c4f-12c2-4215-8916-40f2c4256fdc.jpgPCB linear motor for back-illuminated microscope XY stage?Just need a hole in the PCB...https://video.jeffmcbride.net/static/streaming-playlists/hls/c48d9bd1-e2df-46fd-adbe-1a699776f3d9/481edbcb-4f4c-4c65-a860-f8bea77e7596-master.m3u8https://video.jeffmcbride.net/videos/embed/qgJoEM2iXvaUTqEFmjDKNZ140652024-05-10T21:31:49.160ZYESProjectsNOhttps://video.jeffmcbride.net/w/gjQMLEivS2jXmxZZgNmTrNhttps://video.jeffmcbride.net/lazy-static/thumbnails/5dc3aafe-d6c7-4a74-8b1f-ae457f1e280d.jpgAcoustic LevitatorUsing a pair of ultrasonic transducers to levitate tiny pieces of foamhttps://video.jeffmcbride.net/static/streaming-playlists/hls/7c1a88fe-928f-4238-b6e7-da3b96580a24/63db77c6-dc32-471c-add0-e24f654eff47-master.m3u8https://video.jeffmcbride.net/videos/embed/gjQMLEivS2jXmxZZgNmTrN126042025-03-21T22:43:05.953ZYESProjectsNOhttps://video.jeffmcbride.net/w/fQiqsxaNsDFj38h99BFZfThttps://video.jeffmcbride.net/lazy-static/thumbnails/ddd18699-d72f-40e2-99b8-7217b39db69d.jpgInstalling tiny magnets into 3D printed carsInstructions for building gauss speedway carshttps://video.jeffmcbride.net/static/streaming-playlists/hls/781e60f2-0114-4648-913d-38977f64c7ab/43cca60c-2a60-405b-9d90-2dd933f6b0f0-master.m3u8https://video.jeffmcbride.net/videos/embed/fQiqsxaNsDFj38h99BFZfT412052025-03-21T23:15:55.428ZYESProjectsNOhttps://video.jeffmcbride.net/w/eSKN5EvMWQXXVo3Z6HT9kzhttps://video.jeffmcbride.net/lazy-static/thumbnails/3819a6bb-0c7a-488f-b349-633d1c1d637b.jpgGauss Speedway IntroThe original Gauss Speedway project video, with the earlier revision of the board. https://video.jeffmcbride.net/static/streaming-playlists/hls/705cfafb-0c7d-49af-bee4-cff7d3e34c77/dc9f85b5-0437-4e6f-8b73-1248142f625e-master.m3u8https://video.jeffmcbride.net/videos/embed/eSKN5EvMWQXXVo3Z6HT9kz81072025-03-21T23:27:39.769ZYESProjectsNOhttps://video.jeffmcbride.net/w/sydb6Vf5TYwfhEQPLXcrVshttps://video.jeffmcbride.net/lazy-static/thumbnails/4f682ec1-aa18-47f2-b577-67532b2510e6.jpgAcoustic Array Direction FinderUsing a microphone array and beamforming on an STM32H7 to locate the direction of a noise source Code: https://github.com/mcbridejc/acoustic-array-toolshttps://video.jeffmcbride.net/static/streaming-playlists/hls/d70ce88c-edb4-4f0d-ae53-d491c4940608/6c5868ce-ff24-41ef-a17c-1d8761aa99c5-master.m3u8https://video.jeffmcbride.net/videos/embed/sydb6Vf5TYwfhEQPLXcrVs164092025-03-21T23:33:31.806ZYESProjectsNOhttps://video.jeffmcbride.net/w/4gbFyrZSE9ZaDYqivw3mpBhttps://video.jeffmcbride.net/lazy-static/thumbnails/2ec16255-be19-4418-9f93-3e02ef70be8d.jpgZencan Demo/WalkthroughLive demo for using Zencan to link an IO board with a joystick and a stepper controller board via CAN bus using CANOpen protocol See also: https://jeffmcbride.net/blog/2025/06/05/introducing-zencan/https://video.jeffmcbride.net/static/streaming-playlists/hls/1a6a27d4-4a61-408b-af37-4cd3877ca7b9/daf95337-df50-4866-8da7-45fe942045bc-master.m3u8https://video.jeffmcbride.net/videos/embed/4gbFyrZSE9ZaDYqivw3mpB4690912025-06-18T23:00:22.289ZYESProjectsNOhttps://video.jeffmcbride.net/w/jAEcGvzc9RhuYXVkN6jQx6https://video.jeffmcbride.net/lazy-static/thumbnails/8b78bbe0-763f-49db-9a7e-23b2ab3bd452.jpgLinear Magnet XY Demo Gets a Nice BoxI was cleaning out the lab and came across this little demo -- as a pile of parts in a cardboard box. I decided it deserved a proper home, so I ordered a project box and had a nice time assembling everything into it. https://video.jeffmcbride.net/static/streaming-playlists/hls/969b53a2-1ad6-4fe2-88f4-33f662ca42eb/2471f89d-d124-4bf5-b090-0b18c2c4af87-master.m3u8https://video.jeffmcbride.net/videos/embed/jAEcGvzc9RhuYXVkN6jQx637032026-02-12T16:54:17.609ZYESProjectsNOhttps://video.jeffmcbride.net/c/root_channel/videoshttps://video.jeffmcbride.net/c/jeff_channel/videoshttps://video.jeffmcbride.net/a/root/video-channelshttps://video.jeffmcbride.net/a/jeff/video-channels