Nta gushidikanya ku buryo bwo gukora imigozi idafite solder ikora neza, ariko ugomba kwemera ko idatunganye. Birumvikana ko idakwiye ubwoko bumwe na bumwe bw'imiyoboro, ariko ntabwo itera ibibazo byinshi nk'abafite imiyoboro. Abantu batita ku bintu bazagera aho bagwa mu mutego w'imiyoboro irimo ibice byayo, kandi abantu bahitamo bazamara igihe kinini batunganya imiyoboro aho gukora igishushanyo mbonera cy'imiyoboro ubwayo. Nkore iki?
Uburyo bumwe bwo gukemura iki kibazo ni ugukora akabati k'imigati kadafite solder kadafite jumpers. Iki ni igitekerezo kiri inyuma y'"ibicuruzwa by'imigati" bya [Kevin Santo Cappuccio] bikomeje. Igitekerezo ni uguhindura akabati k'imigati gasanzwe kugira ngo isano iri hagati y'udupira duto twose duhuza n'amashanyarazi ishobore gushyirwa muri porogaramu. Amayeri ari inyuma y'ibi ni ukwigana matrix ya chip ya CMOS switch, cyane cyane MT8816AP. Switches 128 kuri buri chip zishobora gutwara voltages kugeza kuri ± 12 volts, bityo hari circuits nyinshi zishobora gukoresha izi jumpers za silikoni zishobora gutegurwa.
[Kevin] Verisiyo iriho ubu ni 0.2, ingano yayo irakwira munsi y'urubaho rw'imigati rudafite solder, kandi ipaki ni nto. Yasangije ibisobanuro birambuye ku buryo bwo guhuza imiyoboro y'urubaho rw'imigati, byasaga nkaho ari igikorwa kibabaza: gukuramo imiyoboro, gukata agapapuro gato ku mpera y'umuyoboro w'amazi, hanyuma ukayipfunyika kugira ngo ukore imashini icapa icyuma cy'urubaho rw'amashanyarazi. Bisa nkaho ari akazi kenshi, hagomba kuba hari uburyo bwiza; [Kevin] arashaka gutanga ibitekerezo.
Nubwo twabonye uburyo bwo guhinduranya ibyuma bikoresha ikoranabuhanga mu kunoza imigozi idafite solder mbere, twasanze uburyo bworoshye bw'uyu mushinga ari bwiza. Igitekerezo cyo kujugunya ibyo byose birashishikaje cyane.
Uyu ni umushinga mwiza cyane. Ikindi kintu cy’ingenzi ni uko hari ecran nto kuri buri mpande zigaragaza aho ikoreshwa ubu.
Keretse niba udashobora gushyira mu bikorwa ecran ya LED ifite ibice 7 cyangwa moteri ikoresha vibration cyangwa accelerometer cyangwa switch ya DIP cyangwa ikindi kintu cyose "gishimishije kandi gishimishije".
15mA (ImaxIO) irahagije mu guhangana n'ikimenyetso gito icyo ari cyo cyose, iyo ukeneye umuriro mwinshi, ushobora gukoresha bipolar cyangwa FET, kuko iracyari igikoresho cyo gutekesha.
Ubwo nakoraga prototyping, nakoze PCB ifite uruhande rumwe yari irimo uduce twose twa digitale nari nkeneye maze nsuka uduce twa CPLD twatwaraga ibimenyetso "byose" hagati ya uduce. Hanyuma shyira porogaramu kuri VHDL. Rero iyo nkoze ikosa cyangwa ngomba guhindura umurongo, ni uguhindura kode gusa.
Kuri imwe muri synthesizers za analog aho ucomeka insinga zose, iki gitekerezo gisa neza cyane.
Iyo mbonye icyuma nizeye, nzareka gushidikanya. Ku bikoresho byo gushushanya, *buri gihe* bisaba gukeka niba ari ikosa mu gishushanyo cyawe cyangwa ikosa mu gishushanyo.
Kugira ngo ibintu birusheho kuba bibi, ugomba gushushanya by’umwihariko ubushobozi bwo gukoresha imigati, kandi ibintu bigomba gutegurwa nk’imashini zihinduranya imikorere, ntibikora neza.
Imashini zikoresha uburyo bwa analog n'izikoresha umuvuduko mwinshi ntizikunda imiti itera parasites, ikoresha ikoranabuhanga n'izikoresha umuvuduko muto ntibisaba icyiciro cy'imashini zikora neza, niba witonze.
Nta kintu na kimwe nzi kuri ibi bintu byose, ariko nahoraga niteze ko habaho impinduka nk'izo, kandi igihe cyose mbirebye, nsanga atari byo. Ndetse no ku miyoboro yoroheje, ugomba guhuza neza switch n'ibyo ukeneye. Hanyuma ugomba kwemera urwego runaka rw'imyitwarire idahwitse. Buri gihe ni unity gain op amps cyangwa ubwoko bumwe bwa transistors zifite voltage bias cyangwa resistance.
Sinzi byinshi ku ikoranabuhanga ririmo. Urupapuro rw'amakuru rwa MT8816 nabonye nta gishushanyo mbonera cy'umuyoboro nyawo. Ariko ako kanya (ntekereje ko nabisobanuye neza), nabonye ko umuvuduko ntarengwa ari 15mA kandi ko ubushobozi bwo kugarura umuvuduko busanzwe ari 45ohm kuri Vdd = 12. Birumvikana ko ari igice gishimishije gishobora gukoreshwa mu bintu byinshi, ariko umuburo ni munini. Ndetse no kuganza. Sinshobora gutekereza ku muyoboro n'umwe nakoze n'umuyoboro w'imigati ushobora guhinduka. Cyane cyane ko nakoresheje umuyoboro w'imigati nk'intambwe mbere yo guhuza umuyoboro w'imigati ... Ugereranije n'iyi switch, imyitwarire itandukanye cyane y'insinga yatumye bidashoboka gutangira na gato.
Niba nsobanukiwe uburyo uru ruziga rukora neza bihagije kugira ngo nsobanure ingaruka z'uru ruhurirane kuri rwo, ntabwo nkeneye icyuma gitera imbaraga mbere na mbere.
Ku bimenyetso bito bigumana umuvuduko muke, ibi bigomba kuba nk'aho ari switch ikwiye. Birumvikana ko ubushobozi bwo kugarura umuvuduko buzatandukana bitewe n'aho uherereye mu rugero rw'amashanyarazi, ariko uzakenera guhangana na kiloohms uko byagenda kose, kandi ntacyo bitwaye niba wongeyeho + -75 ohm kuri iri kosa mu gishushanyo cyawe. Bitabaye ibyo, urimo ushushanya uruziga rudashobora kubakwa bitewe n'uburyo ibice bito bito bito bito.
Yego, iyo umaze kugira iki gikoresho, ushobora kujya guhanga umushinga, uyu mushinga ni ikimenyetso gito cyane kidafite aho gihuriye na +/-75ohm. Ariko sinigeze nkora umushinga nk'uwo. Sinshobora no gutekereza ku mushinga ungana gutya. Imibare nyayo ni yo yonyine yujuje ibisabwa, kuri ibi uba ufite imiyoboro myinshi ku buryo aho umugati uhagarara ari nk'agace gato, cyangwa hari imiyoboro mike cyane ku buryo wahitamo gukoresha agakoresho k'ikoranabuhanga kugira ngo ushyiremo insinga.
Mu by’ukuri, kimwe cya kabiri cy’ikode yuzuye aho ngaho gishobora gushyira umurongo runaka (cyangwa ikimenyetso icyo ari cyo cyose) kuri probe kugira ngo ubashe kuyishyira mu mirongo itandukanye hanyuma ukabwira ikibaho aho ushaka guhuza nta mudasobwa.
Intambwe ikurikiraho nyuma yo gukora ibintu by'ibanze neza ni ugukora bimwe mu byo wavuze. Hari uburyo bwinshi bwo gukemura iki kibazo. Ndatekereza ko uburyo bwiza cyane ari ugushyira ecran hejuru y'aho ushyiramo umugati, ariko gukora ecran ifite ecran ifite imyenge nk'iyo bishobora gusaba iterambere rya Samsung. Ubundi buryo ni ugushyiramo projector ntoya na kamera, ariko ibintu byose nakoresheje bigerageza gukora ibintu nk'ibyo biratinda cyane kandi ni ikibazo ku buryo bitakoreshwa, kandi hari imashini itemba imyanda gusa.
Ntabwo ari uko hari na kimwe muri ibi kidashobora gukorwa, ahubwo ngomba gushaka uburyo bwo kubikora ntabanje kwirengagiza ubunararibonye.
Nkunda igitekerezo cya probes. Nk'ikimenyetso, buri nkingi ifite rgb, kandi buri "net" ifite kode yayo y'amabara. Nta gushidikanya ko atari umuhanga nk'amaporojekiteri yo hejuru, ariko biroroshye gutwara imirongo ya ws281*.
Nubwo mu bunararibonye bwanjye, ayo masahani ya pulasitiki abonerana atari ay’igihe gito, ariko bisa nkaho byoroshye guhuza agasanduku gabonerana n’agapira ka bb830 kuruta ecran ifite umwobo. Fungura amahitamo menshi yo gushyiramo LED. Ariko no gushyira LED hejuru no munsi y’akabaho k’amashanyarazi si igitekerezo kibi (usibye ko umuyoboro w’amashanyarazi ubangamira gato)
Nkunda iki gitekerezo, kandi ngomba kwiga neza iyi chip. Nashatse ikintu gisa nacyo - ariko mu mibare gusa. Buri pin igomba kugira ubushobozi bwo guhangana na programmable hamwe n'ubushobozi bwo guhangana na ground-set nk'ibyinjira-seti nk'isohoka-seti kugira ngo byose bibe tri-state nk'agasanduku k'igenzura kuri buri pin, bityo porogaramu ishobora gukorwa. Ariko kugeza ubu nta FPGA / CPLD ikwiye yarabonetse. Ku rubuga rw'umugati, sisitemu igomba gutwikira nibura 60 pin 30 + 30. Kubera ko byose bishingiye ku mashini zigenzura, bishobora kwagurwa byoroshye. Kandi byose bigenzurwa na software.
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Igihe cyo kohereza: Ugushyingo-19-2021