Dzimwe nguva zvinongodiwa kuvaka chimwe chinhu chinonakidza kuisa zvikamu zvekare zvakafanana nenzira dzakasiyana. [Sayantan Pal] akaita izvi kune yakazvininipisa RGB LED matrix, kugadzira iyo yakanyanya kutetepa vhezheni nekuisa iyo WS2812b NeoPixel LED muPCB.
Iyo yakakurumbira WS2812B ine hurefu hwe 1.6 mm, inova ndiyo inonyanya kushandiswa PCB ukobvu.Achishandisa EasyEDA, [Sayantan] akagadzira 8 × 8 matrix ine yakagadziridzwa WS2812B package.Kucheka kudiki diki kwakawedzerwa kugadzira friction fit. nokuda kwe LED, uye mapedhi akaendeswa kuseri kwepaneti kunze kwekucheka uye mabasa avo akaputika.PCB inoungana yakatarisa pasi, uye mapedhi ose anotengeswa nemaoko.Zvinosuruvarisa, izvi zvinogadzira bhiriji rakakura rakanyanya solder, iro inowedzera kukora kwese kwese kwepaneru zvishoma, uye inogona kunge isingakodzeri kugadzirwa uchishandisa yechinyakare pick uye gungano renzvimbo.
Takatoona dzimwe nzira dzakafanana dzePCB components dzichishandisa layered PCBs.Vagadziri vakatotanga kupinza zvikamu mu multilayer PCBs.
Izvi zvinofanira kuva chiyero chitsva chekurongedza zvinhu! Uchishandisa bhodhi rakachipa ina-layer, hatidi nzvimbo yakawanda ye wiring, uye inogona kuiswa nyore nyore kana kutengeswa nemaoko kutsiva DIP.Unogona pamusoro pekuisa inductor zvakananga pamusoro pe iyo chip muPCB yezvinhu zvayo zvese zvisingaite.Friction inogona kupa imwe mechanical support.
Kucheka kunogona kuve kwakarerekera zvishoma kana kuumbwa-kuumbwa uye kunoitwa ne laser cutter, saka kuroora chikamu hakudi kurongeka uye kunogona kugadzirwazve nekudziya uye kusundira kunze kubva kune rimwe divi.
Kune bhodhi semufananidzo uri munyaya yacho, handifungi kuti inoda kudarika 2L. Kana iwe ukakwanisa kuwana ma LED mu "gull-wing" package, unogona kuwana nyore nyore chikamu chakatsetseka uye chakaonda.
Ndinoshamisika kana zvichibvira kushandisa jira remukati kudzivirira kusungirirwa pamucheka wekunze (nekuita chidimbu chiduku kuti uwane zvidimbu izvi, kuitira kuti solder iwedzere kuwedzera.
Kana kuti shandisa solder paste ne oven.Shandisa 2 mm FR4, ita homwe yakadzika 1.6 mm, isa pad nechemukati nechemukati, isa solder paste wonamira muchoto.Bob ihama yababa vako, uye maLED ari flush.
Ndisati ndaverenga chinyorwa chose, ndinofunga zviri nani kupisa kupisa kuchava kutarisisa kweiyo hacker.Skip mhangura yen-layer board, ingoisa chero mhando yekupisa sink kumashure, ine mamwe mapedhi anopisa (hauzive izwi rechokwadi).
Iwe unogona kufambisa zvakare iyo LED kune polyimide (Kapton) firimu mhando yakadhindwa redunhu pachinzvimbo chekutengesa nemaoko zvese izvi zvinongedzo kudivi rekuseri: chete 10 mils gobvu, iyo inogona kunge yakatetepa kupfuura inotengeswa nemaoko.
Ko iyo yakajairika maumbirwo emapanera aya haashandisi flexible substrates?Mine yakaita seizvi.Matunhu maviri, saka pane kumwe kudzima kupisa-izvo zvinonyanya kudiwa kune aya makuru arrays.Ini ndine 16×16, inogona kutora zvakawanda. zvezvino.
Ini ndoda kuona mumwe munhu achigadzira aluminium musimboti PCB-an amide board adhesive layer yakanamirwa kune chidimbu chealuminium.
Linear (1-D) strips anowanzo kuwanikwa pane flexible substrates.
A mutete aruminiyamu musimboti PCB inobatsira sechidzitiro chekupisa, asi ichiri kupisa: iwe uchiri kuda kubvisa kupisa kune imwe nzvimbo pakupedzisira.Pamusoro pesimba rangu repamusoro, ndakaisa flexible polyimide (kwete amide!) substrate yakananga pane a hombe finned heat sink ine thermal epoxy.Ini handishandise pressure sensitive adhesive types.Kunyangwe paine convection chete, zviri nyore kurasa >1W/cm^2.I will run at 4W/cm^2 for some minutes at imwe nguva, asi kunyangwe iine 3 cm yakadzika zvimbi, inova inonaka kwazvo.
Mazuva ano, maPCB akacheneswa pamhangura kana aluminium mabhodhi akajairika.Kune zvinhu zvandinoshandisa pachangu, ndingakurudzira mhangura-nyore kusungirira pane aluminium.
Kunze kwekunge iwe uchitengesa chigadzirwa kumhangura (nenzira, kana zvakakodzera), ndinoona kuti inopisa epoxy bonding kune aluminium iri nani zvikuru kupfuura mhangura.Ndakatanga kuisa aluminium ne 1N NaOH mhinduro kwemaawa anenge 30, ndokusuka nemvura yakasvibiswa uye yakaomeswa. thoroughly.Oxide isati yakura zvakare, inosungirirwa mukati memaminitsi mashoma.Damn pedyo isinga peri chisungo.
Nekushandisa webhusaiti yedu uye masevhisi, unobvuma pachena kuiswa kwekuita kwedu, kushanda uye kushambadza makuki.Dzidza zvimwe
Nguva yekutumira: Zvita-30-2021
