nkhani

Nthawi zina zomwe zimafunika kuti mupange china chake chosangalatsa ndikuyika mbali zakale zomwezo m'njira zosiyanasiyana.[Sayantan Pal] adachita izi ku matrix odzichepetsa a RGB LED, kupanga mtundu wowonda kwambiri poyika WS2812b NeoPixel LED mu PCB.
WS2812B yotchuka ili ndi kutalika kwa 1.6 mm, yomwe imakhala yochuluka kwambiri ya PCB yogwiritsidwa ntchito kwambiri. Pogwiritsa ntchito EasyEDA, [Sayantan] adapanga matrix a 8 × 8 ndi phukusi losinthidwa la WS2812B. Chodulidwa chaching'ono pang'ono chinawonjezedwa kuti apange kutsutsana. kwa LED, ndipo mapepala adasunthidwa kumbuyo kwa gululo kunja kwa cutout ndipo ntchito zawo zinagwedezeka.PCB imasonkhanitsidwa pansi, ndipo mapepala onse amagulitsidwa ndi manja. imachulukitsa pang'ono makulidwe onse a gululo, ndipo sizingakhale zoyenera kupanga pogwiritsa ntchito kusankha ndi kusonkhana kwachikhalidwe.
Tawona kale njira zofananira ndi zigawo za PCB pogwiritsa ntchito ma PCB osanjikiza.Opanga ayambanso kuyika zigawo mu ma PCB ambiri.
Izi ziyenera kukhala muyezo watsopano wa kulongedza zinthu! Pogwiritsa ntchito bolodi yotsika mtengo yakusanjikiza zinayi, sitifunika mawaya ochulukirapo, ndipo zitha kukhazikika kapena kugulitsidwa pamanja kuti m'malo mwa DIP.Mutha kukwera pamwamba pa inductor. Chip mu PCB ya zigawo zake zonse zopanda pake.Friction ikhoza kupereka chithandizo cha makina.
Kudula kumatha kupendekera pang'ono kapena mawonekedwe a funnel ndikuchitidwa ndi chodulira cha laser, kotero kukwatitsa gawolo sikufuna kulondola kwambiri ndipo kumatha kukonzedwanso ndikuwotcha ndikukankhira kunja kwa mbali inayo.
Kwa bolodi ngati chithunzi chomwe chili m'nkhaniyi, sindikuganiza kuti chiyenera kupitirira 2L. Ngati mutha kupeza ma LED mu phukusi la "gull-wing", mukhoza kupeza mosavuta gawo lathyathyathya ndi lochepa thupi.
Ndikudabwa ngati n'zotheka kugwiritsa ntchito wosanjikiza wamkati kuti muteteze kutsekemera pazitsulo zakunja (popanga kadulidwe kakang'ono kuti mupeze zigawozi, kotero kuti solder ikhale yowonjezera.
Kapena gwiritsani ntchito solder phala ndi ng'anjo.Gwiritsani ntchito 2 mm FR4, pangani thumba lakuya 1.6 mm, ikani pad pansi mkati, perekani phala la solder ndikuliyika mu uvuni.
Ndisanawerenge nkhani yonse, ndikuganiza kuti kutentha kwabwino kudzakhala koyang'ana kwambiri kwa hacker. Dulani mkuwa wa bolodi la n-wosanjikiza, ingoikani mtundu uliwonse wa kutentha kumbuyo, ndi mapepala otentha (sindikudziwa mawu olondola).
Mutha kusefukiranso ma LED ku polyimide (Kapton) filimu yosindikizidwa yozungulira m'malo mogulitsa ndi manja maulumikizi onsewa kumbali yakumbuyo: 10 mils wokhuthala okha, omwe angakhale ochepa kuposa mabampu ogulitsidwa pamanja.
Kodi mawonekedwe a mapanelowa sagwiritsa ntchito ma substrates osinthika? za panopa.
Ndikufuna kuwona wina akupanga aluminiyumu pachimake PCB-ndi amide board zomatira wosanjikiza chomatira ku chidutswa cha aluminiyamu.
Mizere yozungulira (1-D) imapezeka kawirikawiri pazigawo zosinthika.
PCB yopyapyala ya aluminiyamu imakhala yothandiza ngati kutentha kwa kutentha, koma kumatenthabe: mukufunikirabe kutaya kutentha kwinakwake pamapeto pake. Sink yaikulu yotentha yotentha yokhala ndi epoxy yotentha.Sindigwiritsa ntchito mitundu yomatira yovutirapo.Ngakhale pali convection yokha, ndiyosavuta kutaya>1W/cm^2.Ndithamanga pa 4W/cm^2 kwa mphindi zingapo pakapita nthawi, koma ngakhale ndi 3cm yakuya zipsepse, zimakhala zokoma kwambiri.
Masiku ano, ma PCB opangidwa ndi mkuwa kapena aluminiyamu ndi ofala kwambiri.Pazinthu zomwe ndimagwiritsa ntchito ndekha, ndingalimbikitse mkuwa wosavuta kugwirizanitsa kuposa aluminiyamu.
Pokhapokha mutagulitsa chipangizocho ku mkuwa (mwa njira, ngati kuli koyenera), ndimapeza kuti kutentha kwa epoxy kumangiriza kwa aluminiyamu kuli bwino kwambiri kuposa mkuwa. Ndinayamba kuyika aluminium ndi 1N NaOH yankho kwa masekondi pafupifupi 30, kenako ndikutsuka ndi madzi osungunuka ndi zouma. thoroughly.Oksidiyo isanakulenso, imamangirizidwa mkati mwa mphindi zingapo.Damn pafupi ndi mgwirizano wosawonongeka.
Pogwiritsa ntchito tsamba lathu ndi ntchito zathu, mumavomereza mwatsatanetsatane kuyika kwa machitidwe athu, magwiridwe antchito ndi ma cookie otsatsa. Dziwani zambiri