2026-10-31T22:55:43Z https://nostr.now Doppelmembran-Würgenippel https://nostr.now/npub1gnknlqgvpm39qvheqq2jp2kzm2jd6xzy0486pqvty5jz7ruq3utsasyr83 https://files.techhub.social/accounts/avatars/111/693/096/744/546/725/original/9a8397c65f6a01dd.jpg https://files.techhub.social/accounts/avatars/111/693/096/744/546/725/original/9a8397c65f6a01dd.jpg https://nostr.now/nevent1qqsxzuzr4rlclnfervfmfj2azpnzwk6mrpp5mc0j9ccf7l7rdu6mkvszypzw60upps8wy5pjlyqp2g92ctd2fhgcg375lgyp3vjjgtc0sz83w48rj7r In reply to <a href='/nevent1qqs9r4v5x5k388wxsjzcv34jedwsmu8yk84nh2kpwm2vn58nu8fxn4s9qyuy9'>nevent1q…yuy9</a><br/>_________________________<br/><br/>Direct messaging in meshcore is a mess.<br/><br/>In big meshes the real text messages drowning between all the DM broadcast path/request messages.<br/><br/>I switched off path updates (auto route finding) because it do more harm than good, often routes go to long unstable routes, while the short reliabld one is ignored.<br/><br/>At least with latest mc firmwares region settings can be enforced to all the DM message broadcast too.<br/><br/>Its such low overall bandwith, it nearly chokes itself 2026-07-02T13:36:17Z https://nostr.now/nevent1qqsw9tnew22derjp4hmv2v8cfmhu0pucwtjc7cgslth3d249m5gu3ugzypzw60upps8wy5pjlyqp2g92ctd2fhgcg375lgyp3vjjgtc0sz83wvs5y9s In reply to <a href='/nevent1qqsv9k25vcx5kzvc9c55l80zwgjjra20umzqj9pzg5ksspclwkxdd7chpqlzq'>nevent1q…qlzq</a><br/>_________________________<br/><br/>Great idea to tunnel abrouting protocol over a network without routing, flooding the mesh with traffic and get real meshcore messaging more unreliable<br/><br/>This is why now and then blacklisting feature is wanted 2026-07-01T20:33:09Z https://nostr.now/nevent1qqszhzjw4tazd3jx09psrh3zumpanzvd685f593hrwjhv8h2z07zymszypzw60upps8wy5pjlyqp2g92ctd2fhgcg375lgyp3vjjgtc0sz83wj83vt5 In reply to <a href='/nevent1qqsv9du97h0v3hvfmypuguxecjqq28jvudglu8udcm096rdwy4ez3rqwve0wp'>nevent1q…e0wp</a><br/>_________________________<br/><br/>Can you get a repeater node in the air with 15cm solar cell and a little battery through the cold and dark winter days on a hill, 2 weeks without sunshine? 2026-02-08T15:50:14Z https://nostr.now/nevent1qqsfagerj9eqactyyptveruelcert88ea32m6fy2lmn2ahypmjkfmqszypzw60upps8wy5pjlyqp2g92ctd2fhgcg375lgyp3vjjgtc0sz83wlzg0dw In reply to <a href='/nevent1qqs9fjg8vyxx8684ks4yree0q6edrsznq6hrcglhpkg2gvk827809vc7klehg'>nevent1q…lehg</a><br/>_________________________<br/><br/>Faster melting rates with 1.75 and less power needed at the feeder.<br/><br/>But going away from 2.85 filament is a 2018 thing, when did you order last time 😁<br/><br/>The 3 mm stuff come from plastic welding rods used in first experiments to build reprap printers years ago 2025-08-08T17:26:53Z https://nostr.now/nevent1qqs92ugmel6cdvhqkmn5frr0xt8z5xqaw7k77jf40ptpmwj2qkdk52czypzw60upps8wy5pjlyqp2g92ctd2fhgcg375lgyp3vjjgtc0sz83wx3lmj5 In reply to <a href='/nevent1qqsypqw4cy7p6j8g0fxftm00wlzgv5cykrhqx4eyxqvve67g7a2lfcca2z6tu'>nevent1q…z6tu</a><br/>_________________________<br/><br/>You breathe the smoke in, while the material degrades.<br/>I would get decicated printer for abrasive materials only and do equip only this one with the hardened nozzle.<br/>Doing the normal stuff with normal brass nozzle on another printer.<br/><br/>Or modify the printer to swappable hotends<br/><br/>+1 for nozzle defect influenced underextrusion. 2025-07-22T14:06:12Z https://nostr.now/nevent1qqszcrg22kfr04tmtfmrx2kn4shahte9r82ufjw5sghzthvq6qdvrzqzypzw60upps8wy5pjlyqp2g92ctd2fhgcg375lgyp3vjjgtc0sz83w0fvzua In reply to <a href='/nevent1qqs8kdhe0lqc4lhgf0wvafl8lqyuxpqu6a36r9v9a24al5hhtne54zszes52h'>nevent1q…s52h</a><br/>_________________________<br/><br/>The E axis Stepper? If this would be hotter than 60°C you could not print PLA because the extruder gear would melt the plastic in the feeder.<br/><br/>Print with ABS/ASA will be fine 2025-04-19T23:20:30Z https://nostr.now/nevent1qqszg4m20qsk0nf3awsjgjzkmprxkf04q7csltrzwvcewrg6tyshvygzypzw60upps8wy5pjlyqp2g92ctd2fhgcg375lgyp3vjjgtc0sz83wnax02q In reply to <a href='/nevent1qqsxanyd2k8znjw5lleqvt9u27dcfqzpwc0xhkzade87ddwpdkfrhuqkplky6'>nevent1q…lky6</a><br/>_________________________<br/><br/>1276 vs 1278 different chips for 433 vs 866-915<br/><br/>Sx1262: same chip, but different rf filter circuit, because with 400-1000 open filter you cant get rid of 433 first harmonics.<br/><br/>You need to buy 433 OR 886-915. Its not the same thing. 2025-03-11T22:44:54Z https://nostr.now/nevent1qqs0qwm55zrljf8trz6qe7ylq50d73tfzwqvxaupv43kq2nmxpun2zszypzw60upps8wy5pjlyqp2g92ctd2fhgcg375lgyp3vjjgtc0sz83w8ul7n3 In reply to <a href='/nevent1qqsyvk83hkgsys9e7p427qnzw9mus2rmjzvd9zm8v4qpqgdgwjqav4ss9gmqt'>nevent1q…gmqt</a><br/>_________________________<br/><br/>I dont plan to buy one.<br/><br/>Maybe the filter have inbetween screws to reduce coupling for deeper filter reponse.<br/> There is a sweet spot between more insertion loss and less deep rejection of unwanted frequency.<br/><br/>On mine i probed this with open enclosure, was not very complicated. Then measured and integrated a little wall on the bottom part in the right height.<br/><br/>I want to get my experiments more sophisticated now and build one with 3 resonators and then four. 2025-03-04T11:35:12Z https://nostr.now/nevent1qqs0pqmzje0ghclfnvcl9cnu34j4u0sswzrgvcp4eytwc7uhmmagmvqzypzw60upps8wy5pjlyqp2g92ctd2fhgcg375lgyp3vjjgtc0sz83w7jr3ag In reply to <a href='/nevent1qqsgny6f950v7k3z5twznqpm43enpmvhx09zm9d6m36jntj72zala3q22h3h3'>nevent1q…h3h3</a><br/>_________________________<br/><br/>I have seen this one before, still sold out.<br/>There is a Datasheet linked in the shop.<br/><br/>Nice trace.<br/><br/>The screws are very close to each others.<br/>Maybe not every screw with nut have a resonator element. <br/>Would like to see the inside 🧐 2025-03-03T22:55:38Z https://nostr.now/nevent1qqsz5sw57dcr8yp5u23lqjwskfclms8f5wzpxq5n9dxysqgdvvf8t2czypzw60upps8wy5pjlyqp2g92ctd2fhgcg375lgyp3vjjgtc0sz83w9utg76 I have build another one of the experimental #lora #meshtastic cavity filter for 868mhz<br/><br/>This time i tried to add two notchfilters out of coaxial cable stubs.<br/><br/>In the picture you can see little improved frequency response at the cost of additional 1dB insertion loss.<br/><br/>Set the notch filters closer to the center frequency add more insertion loss, so i dont want to do this.<br/><br/>50dB attenuation for broadcast,<br/>32dB @800MHz<br/>20dB @910Mhz<br/><br/>For LTE/GSM cellular service frequency it could have deeper response.<br/><br/>At places with powerful Broadcast transmitters 50dB attenuation may need to get better too.<br/><br/>So i decided to do the next step and build a new one with 3 resonator elements.<br/>Ill report my results here.<br/> <img src="https://files.techhub.social/media_attachments/files/114/100/828/555/535/190/original/7fd0531b9481a437.jpg"> <br/> 2025-03-03T22:33:39Z https://nostr.now/nevent1qqs9yfydjn0ss9nggskuc5a5gdrr5jf5w733ard0cul3qka55nfj8uszypzw60upps8wy5pjlyqp2g92ctd2fhgcg375lgyp3vjjgtc0sz83wjrsv44 In reply to <a href='/nevent1qqsdg0wunk65233udfwea75jwmxtdsktmnrtnhkf89lprfpepzm966gzu7azl'>nevent1q…7azl</a><br/>_________________________<br/><br/>To me it looks like none of the boards have proper battery low voltage menagement.<br/><br/>The software integrated should at least have calibrated adc scale factor to get good measurements (wait after every change 1-2 minutes because the displayed values are results of some measurements summared)<br/><br/>I see two options: build a proper one yourself as separate hardware (need hysteresis and very low power consumption)<br/><br/>Or<br/>Get it overpowered to never drain the battery by bigger battery capacity and solar panel size. 2025-01-09T00:02:07Z https://nostr.now/nevent1qqsg68dqcqg3du5zgq5ydlax3ptmwns75l9h2vkm83arydf53fy0y6qzypzw60upps8wy5pjlyqp2g92ctd2fhgcg375lgyp3vjjgtc0sz83w03wsl8 Trying to make cabletv infrastructure beautiful, when installing the distribution boxes<br/> <img src="https://files.techhub.social/media_attachments/files/111/776/237/758/994/357/original/6184f1ebce2d4c05.jpg"> <br/> 2024-01-18T09:31:08Z