xov xwm

Qee lub sij hawm txhua yam nws yuav siv los tsim ib yam dab tsi nthuav yog muab cov qub qub ua ke hauv ntau txoj hauv kev.
Qhov nrov WS2812B muaj qhov siab ntawm 1.6 hli, uas tshwm sim yog qhov feem ntau siv PCB thickness.Sing EasyEDA, [Sayantan] tsim ib qho 8 × 8 matrix nrog hloov kho WS2812B pob.A me me txiav tawm ntxiv los tsim kev sib txhuam haum. rau lub LED, thiab cov ntaub qhwv tau txav mus rau sab nraum lub vaj huam sib luag sab nraum qhov kev txiav tawm thiab lawv txoj haujlwm tau flipped.Lub PCB tau sib sau ua ke ntawm lub ntsej muag, thiab tag nrho cov ntaub qhwv tau raug soldered los ntawm txhais tes. Hmoov tsis zoo, qhov no tsim ib tus choj loj loj, uas. me ntsis nce lub zuag qhia tag nrho thickness ntawm lub vaj huam sib luag, thiab tej zaum yuav tsis haum rau ntau lawm siv tsoos de thiab qhov chaw los ua ke.
Peb twb tau pom qee qhov zoo sib xws rau cov khoom siv PCB siv cov txheej txheem PCBs.Cov neeg tsim khoom tau pib ua cov khoom siv hauv ntau txheej PCBs.
Qhov no yuav tsum yog tus qauv tshiab rau kev ntim khoom! Siv lub rooj tsavxwm plaub-txheej pheej yig, peb tsis xav tau ntau qhov chaw thaiv, thiab tuaj yeem yooj yim tau socketed lossis manually soldered los hloov DIP.Koj tuaj yeem nto mount lub inductor ncaj qha rau saum. cov nti nyob rau hauv PCB ntawm tag nrho nws cov passive Cheebtsam.Friction yuav muab ib co neeg kho tshuab kev pab txhawb nqa.
Kev txiav tuaj yeem yog me ntsis inclined los yog funnel-puab thiab ua los ntawm laser cutter, yog li wedging qhov tsis xav tau ntau qhov tseeb thiab tuaj yeem rov ua haujlwm los ntawm cua sov thiab thawb tawm ntawm sab nraud.
Rau ib lub rooj tsavxwm zoo li daim duab hauv tsab xov xwm, kuv tsis xav tias nws yuav tsum tau tshaj 2L.Yog tias koj tuaj yeem tau txais LEDs hauv pob "gull-tis", koj tuaj yeem tau yooj yim tau ib lub tiaj thiab nyias.
Kuv xav tias nws muaj peev xwm siv cov txheej sab hauv los tiv thaiv cov txheej txheem ntawm txheej txheej (los ntawm kev txiav me me kom nkag mus rau cov txheej txheem no, yog li cov solder yuav ntau dua.
Los yog siv cov tshuaj txhuam hniav thiab qhov cub.Siv 2 hli FR4, ua lub hnab ntim 1.6 hli sib sib zog nqus, tso lub ncoo rau hauv qab hauv qab, siv cov tshuaj txhuam thiab lo rau hauv qhov cub.Bob yog koj txiv tus kwv, thiab cov LEDs yog dej ntws.
Ua ntej nyeem tag nrho tsab xov xwm, kuv xav tias kev hloov pauv cua sov zoo dua yuav yog qhov tseem ceeb ntawm tus neeg nyiag khoom no. Hla lub tooj liab ntawm n-txheej board, cia li muab txhua hom cua sov dab dej rau sab nraub qaum, nrog qee qhov thermal pads (tsis paub qhov yog terminology).
Koj tuaj yeem rov qab cov LED mus rau polyimide (Kapton) zaj duab xis hom luam tawm Circuit Court es tsis txhob siv tes-solding tag nrho cov kev sib txuas ntawm sab nraub qaum: tsuas yog 10 mils tuab, uas tej zaum yuav nyias dua li tes-soldered pob.
Puas yog cov qauv ntawm cov vaj huam sib luag no siv tau yooj yim substrates?Kuv zoo li qhov no.Ob txheej, yog li muaj qee qhov cua sov dissipation-uas xav tau ntau heev rau cov arrays loj.Kuv muaj 16 × 16, nws tuaj yeem nqus tau ntau heev. ntawm tam sim no.
Kuv xav pom ib tug neeg tsim ib qho txhuas core PCB-ib qho amide board adhesive txheej glued rau ib daim ntawm txhuas.
Linear (1-D) strips feem ntau pom nyob rau ntawm qhov hloov pauv tau yooj yim.Kuv tsis tau pom ib lub vaj huam sib luag ob sab nrog cov qauv no.Puas muaj qhov txuas rau qhov koj tau hais?
Ib tug nyias aluminium core PCB muaj txiaj ntsig zoo li lub dab dej kub, tab sis nws tseem kub: koj tseem yuav tsum tau dissipate lub tshav kub nyob rau hauv qhov kawg.Rau kuv lub zog ntau dua, kuv laminated ib tug saj zawg zog polyimide (tsis amide!) substrate ncaj qha mus rau ib tug loj finned cua sov dab dej nrog thermal epoxy.Kuv tsis siv siab rhiab nplaum hom.Txawm hais tias tsuas muaj convection, nws yog ib qho yooj yim mus pov tseg> 1W / cm^2.Kuv yuav khiav ntawm 4W / cm^2 rau ob peb feeb ntawm ib lub sij hawm, tab sis txawm nrog 3 cm tob fins, nws yuav ua heev qab.
Niaj hnub no, PCBs laminated ntawm tooj liab lossis txhuas boards muaj ntau heev.Rau tej yam uas kuv siv kuv tus kheej, kuv xav kom tooj liab-yooj yim rau daim ntawv cog lus tshaj txhuas.
Tshwj tsis yog tias koj solder lub cuab yeej rau tooj liab (los ntawm txoj kev, yog tias tsim nyog), kuv pom tias kub epoxy bonding rau txhuas yog zoo dua li tooj liab.Kuv thawj etched txhuas nrog 1N NaOH tov rau li 30 vib nas this, ces yaug nrog dej deionized thiab qhuav. kom huv si.Ua ntej cov oxide rov loj hlob, nws yog bonded nyob rau hauv ob peb feeb.Damn ze indestructible daim ntawv cog lus.
Los ntawm kev siv peb lub vev xaib thiab cov kev pabcuam, koj pom zoo meej rau qhov kev tso kawm ntawm peb qhov kev ua tau zoo, kev ua haujlwm thiab kev tshaj tawm cov ncuav qab zib. Kawm ntxiv