PocketPD Ngumbono omncinci omkhulu: a unikezelo lwamandla ebhentshini Ixhaswe yi-USB-C kwaye ingena ngokoqobo epokothweni yakho, yenzelwe ukuhamba nawe naphi na ngaphandle kokuncama ukulungiswa kombane kunye nokwangoku. Yaqala njengeprojekthi yomthombo ovulekileyo emva inkqubo ende yokuphindaphinda, ukucokisa zombini i-hardware kunye ne-firmware ngoncedo loluntu ukufumana okuninzi kwi-USB Power Delivery standard kwaye, ngakumbi, kwimowudi yePPS (Ubonelelo lwaMandla oluCwangcisiweyo).
Ngetshaja yanamhlanje okanye ibhanki yamandla ehambelanayo, la mandla "umceli" Ixoxisana ngeyona ndlela ifanelekileyo yeprofayili kwaye ikunika umphumo olungelelaniswa ngokupheleleyo, kunye nokukhusela okuhlangeneyo kunye nojongano olucacileyo olusekwe kwiscreen se-OLED kunye nolawulo lomzimba. Akukho frills ezinzima: amaqhosha, i-encoder kunye nokufunda idatha yexesha langempela ukwenza into oyifunayo ngaphandle kweziphazamiso.
Yintoni iPocketPD kwaye kutheni yahlukile?
Isitshixo kwiPocketPD kukuba ayinayo i-buck / boost converters ebhodini: ixhasa ngokuthe ngqo uthethathethwano lwePPS I-USB-C isetyenziselwa ukucela amandla ombane afunekayo kunye nangoku kwitshaja. Oku kuvumela ukuyila okukhaphukhaphu kunye nokudityaniswayo, kunye nokulahleka kwamandla amancinci kunye nobushushu obuncinci, obufanelekileyo njengombane ophathwayo okanye uvavanyo lwebhentshi xa ufuna ukuxilonga iingxaki kwintsimi. Ngaphezu koko, isebenza njenge PD 3.0 umvavanyi weprofayilieyenza ibe sisixhobo esiluncedo ngokuphindiweyo kwabo basebenza nge-USB-C.
Ifilosofi yokusetyenziswa kwayo ipragmatic: ukuba uqhagamshela itshaja yangoku okanye ibhetri kunye nePPS (ezininzi ezivela kwiimpawu ezidumileyo njenge Anker, Ugreen okanye Baseus (sele beyixhasa), isixhobo sikuvumela ukuba ucele umbane ochanekileyo kunye namaxabiso angoku. Kwaye ukuba iPPS ayifumaneki, I-firmware iyawa ngobubele ukuya kwiprofayile esemgangathweni ye-5V (PDO) kwaye ikuvumela ukuba uhlengahlengise inkangeleko ngocofa olude lweVolt/Amp iqhosha ukugcina usetyenziso phantse kuyo nayiphi na imeko.
Indima yePPS ngaphakathi koNikezo lwaMandla e-USB
Indlela Ukucwangciswa kombane Yaziswa nge-USB PD 3.0 ukulungisa kakuhle ukutshaja kwebhetri ngokunciphisa ilahleko yokuguqulwa. Ngokwesiqhelo, i-PPS ivumela isixhobo esidlayo ukuba sicele umbane ochanekileyo kunye nomda wangoku owufunayo kumthombo. ukulungisa amaxabiso ngamanyathelo amahle kakhuluKe, ngePocketPD unokuziphatha njengomthombo webhanki wangempela, ukulawula iiparamitha ngokulula kwaye ngaphandle kokongeza izigaba ezingeyomfuneko zokuguqulwa.
Inqaku elibalulekileyo: umthamo wangempela uxhomekeke kwikhonkco ngalinye kwikhonkco. Amandla okugqibela anqunyelwe lelona candelo libuthathaka.Umzekelo, ukuba itshaja yakho ihambisa i-5 A kodwa ikhebula liqinisekisiwe kuphela kwi-3 A, inkqubo ayiyi kudlula i-3 A. Ngokufanayo, uluhlu lwe-PPS yombane luyahluka ngokuxhomekeka kwitshaja: Amaxabiso aqhelekileyo yi-3,3–11 V okanye 3,3–21 VKwaye iPocketPD iqhelana nento ethethwa ngumthombo ngamnye.
Uluhlu lwemveliso, iindlela zeCV/CC, kunye nohlengahlengiso lwembudumbudu
Ngonikezelo lwamandla oluhambelanayo, unokulungelelanisa i-voltage ukusuka kwi-3,3V ukuya kumlinganiselo ophezulu ovunyelwe yishaja (ngokuqhelekileyo i-20-21V). 20 mV amanyatheloinqanaba lolawulo oluqhelekileyo lonikezelo lwamandla elabhoratri. Okwangoku, umda oqwalaselweyo uqala kwi-1 A kwaye unyuke ukuya kwi-PPS ephezulu ekhoyo. 50 mA amanyathelo, ilungele ukukhusela iiprototypes ezibuthathaka okanye ukugcina iimvavanyo ngaphakathi kwemida ekhuselekileyo.
Kuyafaneleka ukubalula into ethile yendlela yePPS kule projekthi: Unyino lwangoku olungaphantsi kwe-1 A aluxhaswanga e-DC xa usebenza kwi-PPS. Ukuba ufuna ukuvavanya imithwalo ephantsi kakhulu ngolawulo lwangoku olucikidekileyo, kuya kufuneka uqwalasele esi sithintelo kwindlela yakho yovavanyo ukunqanda izinto ezothusayo.
Iyahambelana neetshaja, iibhanki zamandla kunye nemoto
Ubuninzi bePocketPD bubonakala ekondleni kwayo: Ixhasa amagalelo e-USB-C phakathi kwe-3,3 kunye ne-21 V kunye nokuya kuthi ga kwi-5 AOku kuvula ucango lokusebenza ngeetshaja eludongeni, iibhanki zombane, kunye neetshaja zeemoto. Kwiimeko zentsimi, ukuthwala ibhanki yamandla ye-PPS kwi-backpack yakho kusombulula iingxaki ezininzi ngaphandle kokuxhomekeka kwigridi yombane, kwaye kwindawo yokusebenzela, itshaja yePD elungileyo iya kukunika i-headroom eyimfuneko yovavanyo olunzima ngakumbi.
Ukuba unawo nawaphi na amathandabuzo malunga nokuhambelana, kungcono ukujonga iinkcukacha zetshaja: ukuba ikhankanya PD 3.0 (okanye kamva) kunye PPSIitshaja ngaphandle kwePPS ziya kuqhubeka nokusebenza ngeprofayili ye-5V PDO, kodwa uya kulahlekelwa luhlengahlengiso oluqhubekayo lombane. Kwaye ungalibali: Sebenzisa iintambo eziqinisekisiweyo Ngobunzulu obudingayo; yimeko yeklasikhi yentambo yokuba ngumqobo wenkqubo kwaye ikuthintele ngaphandle kokuba uyiqonde.
Umboniso, ulawulo, kunye nememori yeprofayile
Ujongano lusonjululwe nge Umboniso we-O0,96 Inika amandla ombane acacileyo, angoku, kunye nokufundwa kwesimo, kwaye ineempawu zolawulo lomzimba (i-encoder kunye namaqhosha) kukhangelo oluthe ngqo lweparameter. Kulula ukuyisebenzisa, kunye nempendulo ekhawulezileyo kwaye akukho luhlu lunzima, oludityanisiweyo olukhulu xa ulinganisa kwaye ungafuni ukuchitha ixesha.
Iinkcukacha ezisebenzayo: iprofayile ekhethiweyo (i-voltage kunye nomda wangoku) Igcinwe kwimemori ye-flash ye-microcontroller kwaye ibuyiselwe ekuqaliseni kwakhona. Oku kuthetha ukuba ungacima, uvule umva, kwaye uthathe kanye apho ubuyeke khona-into ethi, kusetyenziso lwemihla ngemihla, ixabiseke ngakumbi kunokuba unokucinga.
Uyilo lwangaphakathi kunye ne-elektroniki
Embindini wenkqubo kukho a I-Raspberry Pi RP2040 (Cortex-M0+) nge 16 MB of QSPI flash memory, uxanduva logic, UI, kunye nolawulo thethwano. Iprosesa yeprotocol ye-USB PD isetyenziswa njengengqondo yeprotocol ye-USB PD. AP33772 isilawuli sump, ephethe incoko yababini kunye nomlayishi ukulungisa kakuhle iiparamitha zePPS ngokuchanekileyo kunye nokuthembeka.
Ukwenziwa kombane kunye nemilinganiselo, uyilo ludibanisa inzwa yangoku kunye ne-voltage kwibhodi kunye ne-5 A (23 V max.) "I-diode efanelekileyo" yokutshintsha uhlobo lomthwalo, okunciphisa ukuhla kwamandla ombane kunye nokuphucula ukusebenza kakuhle. Le ndlela, idibene nokungabikho kwabaguquli beDC-DC ebhodini, kunciphisa ubushushu kwaye yenza lula umendo phakathi komthombo kunye nesekethe yakho phantsi kovavanyo.
Ukhuseleko kunye nokhuseleko
Kuba ilunikezelo lwamandla olusebenzisekayo kwiiprototypes kunye ne-elektroniki ebuthathaka, ukhuseleko lwalubalulekile. Kwigalelo, kukho TVS/ESD kwi DC, USB 2.0 kunye VBUS ukugubungela iincopho kunye nokukhutshwa; kunye nemveliso, TVS/ESD kwi VOUT kunye ukhuseleko diode flyback Kwimithwalo yokufundisa, ukongeza kukhuseleko kwiisekethe ezimfutshane, umva wangoku, kwaye, kwiinguqulelo ezibhaliweyo, nazo. umva wombane kuloliwe.
Ngokubanzi, inkqubo yokhuseleko yenzelwe ukuba iimpazamo ezincinci zingonakalisi iseshoni yakho okanye zonakalise ihardware yakho. Nangona kunjalo, iingcebiso zomenzi zicacile: Yihloniphe imida yetshaja yakho, intambo, kunye nePocketPD ngokwayo.kwaye soloko uqinisekisa ubumbeko phambi kokudibanisa imithwalo ebuthathaka.
Uyilo lomzimba, ukudibanisa kunye nokuchithwa
I-chassis kunye ne-encoder knob zi I-3D ishicilelwe Yenziwe ngezinto ezinobushushu obuphezulu (i-PETG kwiinguqulelo ezibhaliweyo), yenza kakuhle kwimozulu eshushu yasehlotyeni okanye phantsi kweebhentshi zovavanyo ezifunwayo. Uyilo lubeka phambili ukulula kunye nokulungiswa okuqhelekileyo kwelizwe lomenzi.
Enye into enomdla yimagnethi edityaniswe ngasemva: Isetyenziselwa ukuyinamathisela kwiindawo zetsimbi. (njengebhari yebhanki) kwaye, ngengozi, yenza njenge isinki yobushushuukunceda ukukhupha ubushushu ngexesha lokusetyenziswa ixesha elide. Olu phawu lulula luluncedo kakhulu kwiindibano zocweyo nakwiilabhoratri apho kufuneka ube nomthombo wamandla ofumaneka lula kwaye ubonakale ngokucacileyo.
Uqhagamshelo lwemveliso kunye nokwahluka
Njengomgangatho, iPocketPD iza nayo iitheminali ibhanana pre-solderedilungele ukusetyenziswa kunye nezixhobo eziqhelekileyo. Iintlobo ezimbini ezahlukeneyo zikwanikezelwa: enye enebhloko isikrufu esiqhawukayo eyongeziweyo, kunye nenye ebandakanya iziqhagamshelo ezibini ezongezelelweyo ezingafakwanga ukuze ukhethe lowo ukhetha: Anderson Powerpole PP15/45 o XT60Yindlela ebhetyebhetye yokuyiqhelanisa ne-ecosystem yakho ngaphandle kokukunyanzela ukuba ube kumgangatho omnye.
Nceda uqaphele ukuba, njengoko kuchaziwe, Zonke iindlela zokuphuma zabelana ngesiporo esifanayo yangaphakathi oko kukuthi, ayingomajelo azimeleyo. Oku kubalulekile xa uzama ukuphepha ukudibanisa kwangaxeshanye okunokuthi kungenise ingxelo engafunekiyo okanye iilophu zomhlaba ezingacocekanga.
Amagqabantshintshi aphambili
Kwabo bafuna ukuya ngqo kwinqanaba, nantsi isishwankathelo sobugcisa sawona manqaku afanelekileyo. Khumbula ukuba uxinzelelo oluphezulu olunokuxoxwa Kuxhomekeke kwitshaja yakho yePPS kwaye yangoku ilinganiselwe ngeyona nto ibuthathaka kwitsheyini (itshaja/intambo):
- Ukungena: Uhlobo lweC-USB3,3–21 V ukuya ku-5 A
- Ukuhamba: 3,3–20/21 V ukuya kuthi ga kwi-5 A (kuxhomekeke kwi-PPS ekhoyo)
- iindlela: CV (20 mV/step) kunye CC (50 mA/inyathelo, ubuncinane yi-1 A kwiPPS)
- Isikrini: 0,96 ″ OLED
- IMCU: RP2040 + 16 MB QSPI
- Iprothokholi ye-IC: AP33772 (Isinki yePD)
- Ukhuseleko: isiphaluka esifutshane, i-reverse current, i-TVS/ESDi-flyback; ezahlukeneyo ziquka umva wombane
- Ubungakanani: 86 × 55 × 21 mm; ubunzima: 63 g
Ngokubhekiselele kwiqondo lokushisa lokusebenza, kukho iireferensi kuluhlu olubini kumanqaku obugcisa ahlukeneyo: 0–80 ºC y 0–45 ºCUkuba uza kuyicinezela kufutshane nomda ongaphezulu, yiyame kwimagnethi/isinki yobushushu kwaye ubeke iliso kwindawo engqongileyo ukuze ugcine imida efanelekileyo.
Umthombo ovulekileyo ngokwenene: i-firmware, i-hardware, kunye ne-casing
Inxalenye yesoftware ipapashwa phantsi MIT ilayisensiukudibanisa amathala eencwadi aqhelekileyo kunye nezixhobo zoluntu zangaphandle. Isikimu kunye nePCB zaphuhliswa kwi I-KiCad 9.x kwaye iya kukhutshwa phantsi CC BY-SA 4.0Ngelixa i-3D-printed case ikwakhona ukuze uzenzele ngokuthanda kwakho. Koko kukuthi, Unokufunda, ukuguqula, kwaye ube negalelo kokubini kwikhowudi nakwizinto zombane nezobuchwephesha.
Ukuba ungathanda ukufunda ngakumbi malunga nePPS, kukho iireferensi kuluntu kumxholo osuka GreatScott! kunye ne-ElectricArc240Ezi ziluncedo kakhulu ekuqondeni iziseko kwaye uzisebenzise kwiiprojekthi zakho. Indawo yokugcina ibandakanya... Iifayile zeGerber kunye ne-firmware Ukulungele ukwakha iyunithi ngokwakho ukuba ukwi-DIY.
Ukusetyenziswa kwebala kunye neprofayili yobungcali
Iqela elisemva kwePocketPD livela kwihlabathi leenzwa ezikude kunye nesixhobo somdlalo. Loo mvelaphi ichaza izigqibo zoyilo ezifana iinketho kulawulo lwenyamaukufundeka okucacileyo, umazibuthe ongasemva, kunye nomzimba ohlangeneyo, ngaphandle kokuqhayisa, Isebenza xa uyifuna.Nokuba uyingcaphephe, ungumfundi wobunjineli, okanye umenzi, esi sisixhobo esiguquguqukayo esingayi kuthatha indawo eninzi kubhaka wakho.
Enye into edibanisayo kukuba iPocketPD iphinda isebenze njenge Umvavanyi weprofayile yePDOku kuluncedo ekuqinisekiseni iitshaja kunye neentambo kunye nokuqinisekisa ukuba uthethathethana ngantoni kwimeko nganye. Oku kubonelelwa ngombane kubini/umsebenzi womvavanyi uyasebenza ngakumbi kwiilebhu zokufundisa kunye neekhithi zolondolozo, apho ixesha lingundoqo kwaye awufuni kuthwala isiqingatha seshelufa yezixhobo.
Imveliso, ulawulo lomgangatho kunye nemathiriyeli
Imveliso kunye nokudibanisa ziphathwa IngweleIingcali kwii-agile print runs ziye zakhawulezisa uphuhliso ngokuphindaphinda kaninzi. Iyunithi nganye idlula uvavanyo lokusebenza ngaphambi kokushiya ukuqinisekisa ukuba ifika kwimeko egqibeleleyo ukusuka kumzi-mveliso, into ethi, xa sithetha malunga nokunikezelwa kwamandla, ibonakala ekusetyenzisweni kokuqala.
Ukupakishwa kufune ukunciphisa inkunkuma ngaphandle kokuncama ukhuseleko. ukuphepha amagwebu amaninziI-casing kunye ne-knob yi-3D eprintiweyo kunye ne-high-temperature filament ukumelana neendawo ezifudumeleyo kunye neeseshoni ezide, isigqibo esisebenzayo kunye nesizinzileyo ngokuhambelana nomoya ovulekileyo.
Ulungiselelo kunye nokufumaneka
Emva kwebhetshi nganye yokwenziwa kwempahla, uthutho luhanjiswa ngeqabane lofezekiso lweCrowd Supply, IiMouser zeMbaneukusasazwa kwihlabathi jikelele. Ukuba unomdla wokulandela iindaba zamva nje, iqela libhengeze inguqulelo ephuculweyo kwaye wabelane ngenkqubela kunye nohlaziyo ngokusebenzisa amajelo eprojekthi ukuze ungaphoswa nantoni na.
Ukuvuthwa kweprojekthi, imingcipheko kunye nendaleko
Uyilo ludlule kwimijikelo emininzi ukuya qinisekisa ukomelela nokuthembekaUmsebenzi ongundoqo uzinzile ixesha elithile, kwaye uhlaziyo lwe-firmware lugxile uphuculo lolawulo kunye namava omsebenzisi. Ngokuphathelele ukubonelela, kukho ibhilikhi eguquguqukayo yezinto ezinciphisa impembelelo yokunqongophala kwesitokhwe kumacandelo abalulekileyo.
Njengayo nayiphi na imveliso yombane, Kuhlala kukho umngcipheko othile.Nangona kunjalo, amanyathelo okuthintela athathiweyo apha, kwaye aqinisekisiwe ngokuqhutywa okuyimpumelelo kwangaphambili kwemveliso. Kwinqanaba lomsebenzisi, eyona "ingozi" enkulu yokwenene idibanisa neshaja / ikhebula engahambelaniyo; yiyo loo nto sigxininisa: Khetha unikezelo lwamandla olufanelekileyo kunye nentambo ukonwabela amandla alo apheleleyo.
I-PPS, i-PD kunye nentlawulo eKhawulezayo: ukucacisa iikhonsepthi
Ngaphakathi kwe-zoo yemigangatho yomthwalo, iPD kunye ne-QC zezona zaziwa kakhulu. Ukuhanjiswa kwamandla kwe-USB Sisambulela esivumela iziphumo zamandla aphezulu kwi-USB-C (ukuya kuthi ga kwi-100W kuhlaziyo lwakudala), kunye neeprofayili ezichazwe kwangaphambili kwaye, ukusukela kwiPD 3.0, imowudi. PPS yokulungisa kakuhle. Kunoko, Ukukhawuleza ngokukhawuleza (i-Qualcomm) bubuxhakaxhaka bobuchwephesha bokutshaja ngokukhawuleza kwiiselfowuni; iinguqulelo zamva nje ziye zaphucula ukuhambelana kwePD, kodwa ugxininiso lwabo alukho ekusebenzeni njengebhanki yamandla.
I-advanteji yePPS ngaphezu kweeprofayili ezisisigxina ilele ukunciphisa ilahleko kunye nobushushu ngokucela kanye oko kufunekayo nangawuphi na umzuzu. Kwiibhetri, oku kuthetha uxinzelelo oluncinci lwe-thermal kunye nexesha elide lokuphila; kwisixhobo esinje ngePocketPD, kuthetha ulawulo olululo lwesandi ngaphandle kokufaka iziguquli ezongezelelweyo ezidibanisa iseti.
Iingcebiso zokuhambelana kunye nezixhobo ezixhasa iPPS
Ziyanda iitshaja kunye neebhanki zamandla ezinePPS kwimarike. Ukongeza kwezo sele zikhankanyiwe kwi-Anker, i-Ugreen, okanye i-Baseus, ii-smartphones ezininzi ezikumgangatho ophezulu (ezifana neemodeli zamva nje ze-Samsung Galaxy) kunye neelaptops zanamhlanje ziyayixhasa, enceda abavelisi betshaja babandakanye imo kwizixhobo zabo. Nangona kunjalo, Ngalo lonke ixesha khangela iinkcukacha zobugcisa. ukuqinisekisa ukuba unoluhlu lwe-3,3–11 V okanye 3,3–21 V onomdla kulo kunye nemfuneko yangoku.
Ukuba uqhagamshela umthombo ongeyo-PPS, iPocketPD iya kutshintshela kuyo 5V PDOUya kuba nakho ukusebenza ngemithwalo ye-5V kwaye uhlengahlengise iiprofayili ezikhoyo, kodwa uya kuphulukana nomlingo wohlengahlengiso lombane oguqukayo. Isebenziseka ngokugqibeleleyo kwi-5V yombane, kodwa ukuba injongo yakho rhoqo phakathi kwe-3,3 kunye ne-20/21 V Ngamanyathelo angama-20 mV, ngokuqinisekileyo uya kufuna i-PPS.
Ukunqanda nje ukudideka: Ipokotho yeGPD ayiyoPocketPD
Kwiwebhu uya kubona iireferensi kuzo IPocket ye-GPDYi-7-intshi mini-laptop ene-Windows 10, i-Atom x7 iprosesa, i-8 GB ye-RAM, ukugcinwa kwe-eMMC, i-WiFi-AC, kunye ne-USB-A/C kunye nezibuko ze-microHDMI. Sisixhobo esinomdla malunga nobukhulu kunye noyilo, kodwa Ayinxulumananga nePocketPD Ngaphaya komdlalo wegama, ukuba ujonge unikezelo lwamandla lwe-USB-C olucwangcisekileyo kunye nePPS, gxila kwiPocketPD; ukuba ufuna i-mini-computer, ngoko ewe, i-GPD Pocket libali elahlukileyo.
Laa laptop, ngendlela, igqamile kwi-chassis yayo yealloy, i-1920 × 1200 IPS isikrini sokuchukumisa, i-7000 mAh ibhetri, kunye nekhibhodi edibeneyo ene-trackpoint, kodwa Akunanto yakwenza nayo kunye nemisebenzi yonikezelo lwamandla, ukhuseleko okanye uthethathethwano lwePD olusikhathazayo apha.
I-PocketPD idibanisa i-voltage efanelekileyo kunye nolawulo lwangoku nge-PPS, ukukhuselwa okubanzi, i-interface ecacileyo, ukudibanisa okuguquguqukayo, kunye nendlela yomthombo ovulekileyo okhuthaza ukufunda, ukuguqulwa kunye nokuphucula. Nge-USB-C PD 3.0+ tshaja/intambo ehambelanayo, Uphethe umthombo webhanki epokothweni yakho Ukulungele ibhubhoratri, iiklasi okanye umsebenzi wentsimi, kunye noxolo lwengqondo lokuvelisa ngokucophelela kunye noluntu oluqhubela phambili iprojekthi.
