Elecrow ESP32-32E 3.5 Inch Display Module Bukana ea Mosebelisi

ESP32-32E 3.5 inch Display Module

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Litlhaloso

• Lebitso la Sehlahisoa: 3.5inch ESP32-32E E32R35T&E32N35T
• Mohlala: CR2024-MI3275
• Pontšo ea Mojule: 3.5inch ESP32-32E

Tlhahisoleseding ya Sehlahiswa

Tlhaloso ea Mohloli

Lenaneo la lisebelisoa le na le likarolo tse fapaneng:

• 1-_Moemo: Sample khoutu ea lenaneo, lilaebrari tsa software ea motho oa boraro,
  ditaelo tsa ho seta tikoloho ya ntshetsopele ya software
• 2-_Tlhahiso: Litlhaloso tsa sehlahisoa, skrine ea LCD
  litlhaloso, LCD e bonts'a mokhanni oa IC khoutu ea ho qala
• 3-_Structure_Diagram: Litekanyo tsa sehlahisoa le litšoantšo tsa 3D
• 4-_DataSheet: Libuka tsa data bakeng sa likarolo tse fapaneng joalo ka LCD
  bonts'a mokhanni, mokhanni oa skrineng sa ho ama, jj.
• 5-_Schematic: Sebopeho sa thepa ea lihlahisoa, mohloli oa IO
  tafole ea kabo, sephutheloana sa karolo
• 6-_User_Manual: Litokomane tsa basebelisi ba sehlahisoa
• 7-_Tool_software: Lisebelisoa tsa liteko, lisebelisoa tsa ho lokisa liphoso, software bakeng sa
  flash download, joalo-joalo.
• 8-_Quick_Start: Litaelo tsa ho chesa moqomo file le ho sebelisa
  Flash download sesebelisoa

Litaelo tsa Software

Ho hlahisa software bakeng sa module ea pontšo:

1. Haha tikoloho ea ntlafatso ea software ea ESP32.
2. Kenya lilaebrari tsa software ea batho ba bang ha ho hlokahala.
3. Bula kapa theha projeke ea software bakeng sa ho lokisa liphoso.
4. Matla ho mojule oa ponts'o, bokella le ho jarolla lenaneo
   bakeng sa ho lokisa liphoso.
5. Lekola ts'ebetso ea software 'me u etse ho hlokahalang
   liphetoho ho fihlela phello e lebelletsoeng e fihleloa.

Litaelo tsa Hardware

Fetileview lisebelisoa tsa lisebelisoa tsa module:

Tlhaloso e qaqileng ea setšoantšo sa schematic sa pontšo
module e fumaneha bukeng ea litaelo. Litlhokomelo tsa ho sebelisa
Display module le tsona li fanoe ho netefatsa hore li nepahetse
tshebetso.

LBH

P: Ke lokela ho etsa eng haeba phello ea software e sa kopane
litebello?

A: Tsoela pele ho fetola khoutu ea lenaneo le recompile ho fihlela
phello e lakatsehang e fihletsoe. Sheba litokomane tse ho
1-Demo directory bakeng sa mehato e qaqileng.

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3.5inch ESP32-32E E32R35T&E32N35T Buka ea basebelisi

CR2024-MI3275

E32R35T&E32N35T
3.5inch ESP32-32E Display Module Bukana ea Mosebelisi

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LIEKETSENG

CR2024-MI3275

1. Tlhaloso ea Mohloli ……………………………………………………………………………………… 3 2. Software Instructions ………………………………………………………………………………. 4 3. Litaelo tsa Hardware …………………………………………………………………………………… 4
3.1 Ka holimoview 4.Tlhaloso e felletseng ea schematic diagram of display module …………………...3.2

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1. Tlhaloso ea Mohloli
Lenane la lisebelisoa le bontšitsoe setšoantšong se latelang:

CR2024-MI3275

Setšoantšo sa 1.1 Lethathamo la Pack Information Pack

Directory

Tlhaloso ea Litaba

1-_Demo 2-_Tlhahiso

Likarolo tsa sample khoutu ea lenaneo, laebrari ea software ea motho oa boraro eo sample lenaneo le itšetlehile ka, phetolo ea laeborari ea motho oa boraro file, tokomane ea litaelo tsa ho seta tikoloho ea software, le sample tokomane ea litaelo tsa lenaneo. Bontša tlhahiso ea sehlahisoa sa module, tlhahiso ea skrine ea LCD le khoutu ea ho qala ea IC ea mokhanni oa LCD.

3-_Structure_Diagram Bontša boholo ba sehlahisoa sa mojule le litšoantšo tsa 3D tsa sehlahisoa

4-_DataSheet 5-_Schematic

LCD display driver ST7796 data book, resistance driver XPT2046 data book, ESP32 master data book and hardware design guide document, USB to Serial IC(CH340C) buka ya data, audio ampbuka ea data ea lifier chip FM8002E, buka ea data ea 5V ho isa ho 3.3V le taolo ea tefiso ea betri Chip TP4054 lakane ea data.
Sebopeho sa thepa ea thepa, ESP32-WROOM-32E mojule oa IO tafole ea kabo ea lisebelisoa, sephutheloana sa schematic le PCB component

6-_Mosebelisi_Manual

Litokomane tsa basebelisi ba sehlahisoa

7-_Tool_software

WIFI le Bluetooth test APP le lisebelisoa tsa ho lokisa liphoso, USB to serial port driver, ESP32 Flash download tool software, software take up software, software take up software, JPG image processing software le serial port debugging tools.

8-_Qala_Kapele

Ho hlokahala ho chesa moqomo file, sesebelisoa sa ho jarolla flash le litaelo tsa tšebeliso.

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2. Litaelo tsa Software
Mehato ea nts'etsopele ea mojule oa ponts'o ke e latelang: A. Haha tikoloho ea nts'etsopele ea sethala sa ESP32; B. ha ho hlokahala, tlisa lilaebrari tsa software tsa mokha oa boraro e le motheo oa nts'etsopele; C. bula projeke ea software hore e tlosoe, u ka boela ua theha software e ncha
morero; D. matla mojuleng oa ponts'o, bokella le ho jarolla lenaneo la ho lokisa liphoso, le
ebe u hlahloba phello ea software e sebetsang; E. phello ea software ha e fihle ho se lebeletsoeng, tsoela pele ho fetola lenaneo
khoutu, ebe o bokella le ho jarolla, ho fihlela phello e fihla se lebelletsoeng; Bakeng sa lintlha tse mabapi le mehato e fetileng, bona litokomane bukeng ea 1-Demo.

3. Litaelo tsa Hardware
3.1. Ho fetaview ea lisebelisoa tsa hardware ea module e bontšoa
Lisebelisoa tsa li-hardware tsa module li bonts'oa litšoantšong tse peli tse latelang:

Setšoantšo sa 3.1 Mojule lisebelisoa tsa hardware 1
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Setšoantšo sa 3.2 Lisebelisoa tsa hardware tsa module 2 Lisebelisoa tsa hardware li hlalosoa ka tsela e latelang: 1) LCD
Boholo ba ponts'o ea LCD ke lisenthimithara tse 3.5, mokhanni oa IC ke ST7796, 'me qeto ke 320×480. ESP32 e hoketsoe ho sebelisoa segokanyimmediamentsi sa 4-wire SPI. A. Kenyelletso ho molaoli oa ST7796
Molaoli oa ST7796 o tšehetsa qeto e phahameng ea 320 × 480 mme o na le GRAM ea li-byte tse 345,600. E boetse e tšehetsa 8-bit, 9-bit, 16-bit, 18-bit le 24-bit parallel port libese tsa data, hape e ts'ehetsa likou tsa serial tsa terata tse 3 le tse 4 tsa SPI. Hobane taolo e ts'oanang e hloka palo e kholo ea likou tsa IO, tse sebelisoang haholo ke SPI serial port control. ST7796 e boetse e ts'ehetsa 65K, 262K, 16.7M RGB ponts'o ea mebala, 'mala oa ponts'o o ruile haholo, ha o ntse o ts'ehetsa ponts'o ea ho potoloha le ho phenya le ho bapala video, ho bonts'a ka mekhoa e fapaneng.
Molaoli oa ST7796 o sebelisa 16bit (RGB565) ho laola ponts'o ea pixel, kahoo e ka bonts'a mebala e fihlang ho 65K pixel ka 'ngoe. Aterese ea pixel e behiloe ka tatellano ea mela le likholomo, 'me tataiso ea increment le decrement e khethoa ke mokhoa oa ho hlahloba. Mokhoa oa ho bonts'a ST7796 ke ho beha aterese pele ebe o beha boleng ba 'mala. B. Kenyelletso ea protocol ea puisano ea SPI
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Nako ea ho ngola ea bese ea SPI ea terata e 4 e bonts'oa setšoantšong se latelang:

Setšoantšo sa 3.3 Nako ea ho ngola ea 4-wire SPI bese CSX ke khetho ea chip ea makhoba, 'me chip e tla lumelloa feela ha CSX e le boemong bo tlaase ba matla. D/CX ke phini ea taolo ea data/taelo ea chip. Ha DCX e ngola litaelo maemong a tlase, data e ngotsoe maemong a phahameng SCL ke oache ea libese ea SPI, e nang le moeli o mong le o mong o ntseng o phahama o fetisang 1 bit ea data; SDA ke data e fetisoang ke SPI, e fetisang likotoana tse 8 tsa data hang. Sebopeho sa data se bontšoa setšoantšong se latelang:
Setšoantšo sa 3.4 4 SPI transmission data format High bit first, fetisetsa pele. Bakeng sa puisano ea SPI, data e na le nako ea phetisetso, e nang le motsoako oa nako ea nako ea sebele (CPHA) le polarity ea nako (CPOL): Boemo ba CPOL bo khetholla boemo bo sa sebetseng ba nako ea serial synchronous, le CPOL=0, e bontšang boemo bo tlaase. CPOL pair transmission protocol Puisano e ne e se na tšusumetso e ngata;
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Bophahamo ba CPHA bo etsa qeto ea hore na oache ea serial synchronous e bokella data moeling oa pele kapa oa bobeli oa ho tlola,
Ha CPHL=0, etsa pokello ea lintlha karolong ea pele ea phetoho; Motsoako oa mekhoa e mene ea puisano ea SPI, 'me SPI0 e sebelisoa haholo Chaena, moo CPHL=0 le CPOL=0 2) Resistive touch screen.
Sesepa sa ho ama se hanyetsang se boholo ba lisenthimithara tse 3.5 'me se hokahane le IC ea taolo ea XPT2046 ka lithakhisa tse 'ne: XL, XR, YU, YD. 3) ESP32-WROOM-32E module
Mojule ona o na le chip ea ESP32-DOWD-V3 e hahelletsoeng kahare, Xtensa dual-core 32-bit LX6 microprocessor, 'me e ts'ehetsa litefiso tsa oache ho fihla ho 240MHz. E na le 448KB ROM, 520KB SRAM, 16KB RTC SRAM, le 4MB QSPI Flash. 2.4GHz WIFI, Bluetooth V4.2 le Bluetooth Low power modules lia tšehetsoa. Li-GPIO tse 26 tsa kantle, karete ea SD ea tšehetso, UART, SPI, SDIO, I2C, LED PWM, motor PWM, I2S, IR, pulse counter, GPIO, capacitive touch sensor, ADC, DAC, TWAI le lisebelisoa tse ling. 4) Sekotjana sa karete ea MicroSD
Ho sebelisa mokhoa oa puisano oa SPI le khokahano ea ESP32, tšehetso ea likarete tsa MicroSD tsa bokhoni bo fapaneng. 5) Leseli la RGB la mebala e meraro
Mabone a LED a khubelu, a matala le a maputsoa a ka sebelisoa ho bontša boemo ba ho sebetsa ha lenaneo. 6) Boema-kepe ba serial
Mojule oa kantle oa serial port o sebelisoa bakeng sa puisano ea serial port. 7) USB ho boema-kepe ba serial le seketsoana sa download se le seng
Sesebelisoa sa mantlha ke CH340C, pheletso e 'ngoe e hokahane le komporo ea USB, pheletso e' ngoe e hokahane le koung ea serial ea ESP32, e le ho fihlela USB ho TTL serial port. Ho phaella moo, potoloho e le 'ngoe ea ho kopitsa e boetse e khomaretsoe, ke hore, ha u khoasolla lenaneo, e ka kenya mokhoa oa ho jarolla ka bo eona, ntle le tlhokahalo ea ho ama ka ntle.

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8) Khokahano ea betri ea li-pin tse peli, e 'ngoe bakeng sa electrode e ntle, e' ngoe bakeng sa eleketrode e mpe,
fihlella phepelo ya motlakase le ho tjhaja. 9) Tefiso ea betri le potoloho ea taolo ea ho tsoa
Sesebelisoa sa mantlha ke TP4054, potoloho ena e ka laola ho tjhaja ha betri hajoale, betri e qosoa ka mokhoa o sireletsehileng ho boemo ba saturation, empa hape e ka laola ho tsoa ha betri ka mokhoa o sireletsehileng. 10) BOOT Key
Kamora hore mochini oa ponts'o o buloe, ho tobetsa ho tla theola IO0. Haeba motsotso oo mojule o buloang kapa ESP32 e setiloe bocha, ho theola IO0 ho tla kenya mokhoa oa ho jarolla. Linyeoe tse ling li ka sebelisoa e le likonopo tse tloaelehileng. 11) Sehokelo sa mofuta oa C
Khokahano e kholo ea phepelo ea matla le segokanyimmediamentsi sa ho jarolla lenaneo la mojule oa ponts'o. Hokela USB boema-kepeng ba serial le seketsoana sa ho penya ha 'ngoe, e ka sebelisoa bakeng sa phepelo ea motlakase, khoaso le puisano ea serial. 12) 5V ho 3.3V voltage regulator potoloho
Sesebelisoa sa mantlha ke molaoli oa ME6217C33M5G LDO. Molumotage regulator potoloho e tšehetsa 2V ~ 6.5V bophara voltage input, 3.3V e tsitsitseng voltage, 'me boholo ba tlhahiso ea hona joale ke 800mA, e ka kopanang ka botlalo le voltage le litlhoko tsa hajoale tsa mojule oa ponts'o. 13) RESET Key
Kamora hore mojule oa ponts'o o buloe, ho tobetsa ho tla hula pinana ea ho seta ea ESP32 fatše (boemo ba kamehla bo hula), e le ho fihlela ts'ebetso ea ho seta bocha. 14) Resistive touch screen control circuit
Sesebelisoa sa mantlha ke XPT2046, se buisanang le ESP32 ka SPI. Potoloho ena ke borokho bo pakeng tsa "resissive touch screen" le master ESP32, ea ikarabellang bakeng sa ho fetisetsa lintlha tse skrineng sa ho ama ho mong'a ESP32, e le ho fumana lihokahanyo tsa ntlha ea ho ama.

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15) Eketsa phini ea ho kenya Likou tse peli tse sa sebelisoeng tsa IO mojuleng oa ESP32 li huleloa.
tshebediso ya peripheral. 16) Potoloho ea taolo ea backlight
Sesebelisoa sa mantlha ke BSS138 field effect tube. Qetello e 'ngoe ea potoloho ena e hokahane le pini ea taolo ea backlight ho master ea ESP32,' me pheletso e 'ngoe e hokahane le palo e mpe ea leseli la LCD la LED l.amp. Backlight control pin e hula holimo, khanya ea morao, ho seng joalo e tima. 17) Sebui sa sebui
Li-terminals tsa wiring li tlameha ho hokahanngoa ka holimo. E sebelisoa ho fihlella libuela-hōle tsa monokotsoai le libuela-hole. 18) Matla a molumo amppotoloho ea lifier
Sesebelisoa sa mantlha ke molumo oa FM8002E ampsetsiba sa IC. Qetello e 'ngoe ea potoloho ena e hokahane le pinana ea tlhahiso ea boleng ba ESP32 audio DAC 'me e 'ngoe e hokahane le sebopeho sa lenaka. Mosebetsi oa potoloho ena ke ho khanna lenaka le lenyenyane la matla kapa sebui ho utloahala. Bakeng sa phepelo ea matla a 5V, matla a phahameng a ho khanna ke 1.5W (moroalo 8 ohms) kapa 2W (mojaro 4 ohms). 19) SPI peripheral interface
4-terata tshekaletseng segokanyimmediamentsi sa sebolokigolo. Etella pele phini ea khetho ea chip e sa sebelisoeng le phini ea sebopeho sa SPI e sebelisoang ke karete ea MicroSD, e ka sebelisoang bakeng sa lisebelisoa tsa kantle tsa SPI kapa likou tse tloaelehileng tsa IO. 20) I2C peripheral interface
4-terata tshekaletseng segokanyimmediamentsi sa sebolokigolo. Etella pele lithakhisa tse peli tse sa sebelisoeng ho etsa sebopeho sa I2C, se ka sebelisoang bakeng sa lisebelisoa tsa IIC tsa kantle kapa likou tse tloaelehileng tsa IO.

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3.2. Tlhaloso e qaqileng ea setšoantšo sa schematic sa module ea pontšo
1) Potoloho ea sebopeho sa mofuta oa C

Setšoantšo sa 3.5 Type-C interface circuit Potolohong ena, D1 ke Schottky diode, e sebelisetsoang ho thibela hona joale ho khutlela morao. D2 ho D4 ke li-diode tsa ts'ireletso ea electrostatic surge ho thibela mojule oa ponts'o hore o senyehe ka lebaka la matla a mangata.tage kapa potoloho e khuts'oane. R1 ke khanyetso ea ho hula fatše. USB1 ke bese ea Mofuta oa C. Mojule oa ponts'o o hokahana le phepelo ea motlakase ea Mofuta oa C, mananeo a khoasolla, le puisano ea koung ea serial ka USB1. Moo +5V le GND e leng positive power voltage le matshwao a fatshe USB_D- le USB_D+ ke matshwao a fapaneng a USB, a fetisetswang potolohong ya USB-to-serial.
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2) 5V ho 3.3V voltage regulator potoloho

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Setšoantšo sa 3.6 MoqtagPotoloho ea e regulator Potolohong ena, C16 ~ C19 ke "bypass filter capacitor", e sebelisetsoang ho boloka botsitso ba matla a ho kenya letsoho.tage le tlhahiso voltage. U1 ke 5V ho 3.3V LDO e nang le nomoro ea mohlala ME6217C33M5G. Hobane boholo ba lipotoloho tse mojuleng oa ponts'o li hloka phepelo ea motlakase ea 3.3V, 'me matla a ho kenya sebopeho sa mofuta oa C ha e le hantle ke 5V, kahoo vol.tagE regulator e fetola potoloho ea hlokahala. 3) Resistive touch screen control circuit

Setšoantšo sa 3.7 Resistive touch screen control circuit Potolohong ena, C25 le C27 ke li-bypass filter capacitor, tse sebelisetsoang ho boloka matla a ho kenya letsoho.tage botsitso. R22 le R32 ke lihanyetsi tse hulang holimo tse sebelisetsoang ho boloka boemo ba phini bo le holimo. U4 ke XPT2046 control IC, mosebetsi oa IC ena ke ho fumana coordinate vol.tage bohlokoa ba ntlha ea ho ama ea "touch touch screen" ka X+, X-, Y+, Y- pins tse 'nè, ebe ka phetoho ea ADC, boleng ba ADC bo fetisetsoa ho mong'a ESP32. Ka mor'a moo, ESP32 master e fetolela file ea
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Boleng ba ADC ho boleng ba khokahano ea pixel ea ponts'o. XPT2046 e buisana le mong'a ESP32 ka bese ea SPI, 'me kaha e arolelana bese ea SPI le pontšo, boemo ba ho nolofalletsa bo laoloa ka phini ea CS. Pin ea PEN ke pina e sitisang, 'me boemo ba ho kenya bo tlase ha ketsahalo ea ho ama e etsahala. 4) USB ho boema-kepe ba serial le potoloho e le 'ngoe ea ho jarolla

Setšoantšo sa 3.8 USB ho ea ho serial port le ho tobetsa ha 'ngoe ho jarolla potoloho Potolohong ena, U3 ke CH340C USB-to-serial IC, e sa hlokeng oscillator ea kristale e ka ntle ho tsamaisa moralo oa potoloho. C6 ke "bypass filter capacitor" e sebelisoang ho boloka matla a ho kenya letsohotage botsitso. Q1 le Q2 ke li-triode tsa mofuta oa NPN, 'me R6 le R7 ke li-resistant tsa hona joale tse fokotsang moeli oa li-triode. Mosebetsi oa potoloho ena ke ho hlokomela USB ho serial port le ts'ebetso ea ho jarolla hanngoe feela. Letšoao la USB le kenya letsoho le ho tsoa ka UD+ le UD- phini, 'me le fetisetsoa ho mong'a ESP32 ka li-pin tsa RXD le TXD ka mor'a ho sokoloha. Tobetsa e le 'ngoe ho jarolla molao-motheo oa potoloho: A. Lithakhisa tsa RST le DTR tsa CH340C tse hlahisang boemo bo phahameng ka ho sa feleng. Ka nako ena,
Q1 le Q2 triode ha e so bone, 'me lithakhisa tsa IO0 le lithapo tsa reset tsa taolo e kholo ea ESP32 li huleloa holimo. B. Lipini tsa RST le DTR tsa CH340C tse hlahisang maemo a tlaase, ka nako ena, Q1 le Q2 triode li ntse li sa sebetse, 'me lithapo tsa IO0 le li-reset tsa taolo e kholo ea ESP32 li ntse li huleloa ho ea holimo. C. Pini ea RST ea CH340C e lula e sa fetohe, 'me phini ea DTR e hlahisa
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boemo bo phahameng. Ka nako ena, Q1 e ntse e khaotsoe, Q2 e ntse e tsoela pele, pinana ea IO0 ea mong'a ESP32 e ntse e huloa, 'me pinana ea reset e huloa fatše,' me ESP32 e kena sebakeng sa ho tsosolosa. D. CH340C's RST pin e hlahisa boemo bo phahameng, pini ea DTR e hlahisa boemo bo tlaase, ka nako ena Q1 e ntse e sebetsa, Q2 e tima, pinana ea reset ea ESP32 e laolang e ke ke ea phahama hang-hang hobane capacitor e hokahaneng e lefisoa, ESP32 e ntse e le boemong ba ho tsosolosa, 'me pin ea IO0 e tla theoha hang-hang ka nako eo e tla huloa ka mokhoa ona. 5) Matla a molumo amppotoloho ea lifier

Setšoantšo sa 3.9 Matla a molumo ampLifier circuit Potolohong ena, R23, C7, C8 le C9 li etsa potoloho ea RC filthara, 'me R10 le R13 ke mehanyetsi ea ho lokisa phaello ea ts'ebetso. ampmoqhobi. Ha boleng ba ho hanyetsa ba R13 bo sa fetohe, boleng bo fokolang ba ho hanyetsa ba R10, bo boholo ba molumo oa sebui sa ka ntle. C10 le C11 ke li-input coupling capacitors. R11 ke sehanyetsi sa ho hula. JP1 ke lenaka / boema-kepe ba sebui. U5 ke matla a molumo oa FM8002E ampsetsiba sa IC. Kamora ho kenngoa ke AUDIO_IN, lets'oao la audio la DAC le ampe hlahiswa ke phaello le tlhahiso ya FM8002E ho sebui/sebui ka diphini tsa VO1 le VO2. SHUTDOWN ke phini ea ho nolofalletsa FM8002E. Boemo bo tlase bo lumelletsoe. Ka ho sa feleng, boemo bo phahameng bo nolofalitsoe.
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6) ESP32-WROOM-32E potoloho e ka sehloohong ea taolo

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Setšoantšo sa 3.10 ESP32-WROOM-32E potoloho e kholo ea taolo Potolohong ena, C4 le C5 ke bypass filter capacitor, 'me U2 ke ESP32-WROOM-32E modules. Bakeng sa lintlha tse mabapi le potoloho ea kahare ea mojule ona, ka kopo sheba litokomane tsa semmuso. 7) Key reset potoloho
Setšoantšo sa 3.11 Setereke sa reset ea senotlolo
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Potolohong ena, KEY1 ke senotlolo, R4 ke mohanyetsi oa ho hula, 'me C3 ke capacitor ea ho lieha. Reset molao-motheo: A. Ka mor'a ho bulela, litefiso tsa C3. Ka nako ena, C3 e lekana le potoloho e khuts'oane,
RESET pin e thehiloe, ESP32 e kena boemong ba ho tsosolosa. B. Ha C3 e lefisoa, C3 e lekana le potoloho e bulehileng, phini ea RESET e huloa,
Ho seta bocha ESP32 ho felile, 'me ESP32 e kena boemong bo tloaelehileng ba ho sebetsa. C. Ha KEY1 e totoba, phini ea RESET e theiloe, ESP32 e kena ho reset.
state, 'me C3 e lokolloa ka KEY1. D. Ha KEY1 e lokolloa, C3 e tla lefisoa. Ka nako ena, C3 e lekana le e khutšoanyane
potoloho, phini ea RESET e thehiloe, ESP32 e ntse e le boemong ba RESET. Ka mor'a hore C3 e lefelloe, pinana ea ho tsosolosa e huloa, ESP32 e tsosolosoa 'me e kena boemong bo tloaelehileng ba ho sebetsa. Haeba RESET e sa atlehe, boleng ba mamello ea C3 bo ka eketsoa ka nepo ho liehisa pini ea reset ka nako e tlase. 8) Potoloho ea li-interface tsa module ea serial

Setšoantšo sa 3.12 Interface circuit ea serial module Potolohong ena, P2 ke 4P 1.25mm setulo sa pitch, R29 le R30 ke li-resistors tsa ho leka-lekana ha impedance, 'me Q5 ke ts'ebetso ea tšimo e laolang matla a ho kenya letsoho a 5V. R31 ke sehanyetsi sa ho hulela fatše. Hokela RXD0 le TXD0 ho li-serial pin, 'me u fe matla ho lithakhisa tse ling tse peli. Kou ena e hokahane le boema-kepe bo tšoanang le ba
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3.5inch ESP32-32E E32R35T&E32N35T Buka ea basebelisi
onboard USB-to-serial port module. 9) xpand IO le li-circuits tsa peripheral interface

CR2024-MI3275

Setšoantšo sa 3.13 Li-circuits tse atolositsoeng tsa IO le peripheral interface Potolohong ena, P3 le P4 ke litulo tsa 4P 1.25mm, 'me JP3 ke litulo tsa 2P 1.25mm. R33 le R34 ke I2C pin pull-up resistors. SPI_CLK, SPI_MISO, SPI_MOSI lithakhisa li arolelanoa le liphini tsa SPI tsa karete ea MicroSD. Lithako tsa SPI_CS, IIC_SCL, IIC_SDA, IO35, IO39 ha li sebelisoe ke lisebelisoa tse ka har'a board, kahoo li tsamaisoa ho hokahanya lisebelisoa tsa SPI le IIC, hape li ka sebelisoa bakeng sa IO e tloaelehileng. Lintho tseo u lokelang ho li ela hloko: A. IO35 le IO39 e ka ba li-input pins feela; B. Ha phini ea IIC e sebelisoa bakeng sa IO e tloaelehileng, ho molemo ho tlosa khanyetso ea R33 le R34 ea ho hula; 10) Tefiso ea betri le potoloho ea taolo ea ho tsoa

Setšoantšo sa 3.13 Tefo ea betri le potoloho ea taolo ea ho tsoa
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3.5inch ESP32-32E E32R35T&E32N35T Buka ea basebelisi

CR2024-MI3275

Potolohong ena, C20, C21, C22 le C23 ke bypass filter capacitor. U6 ke IC ea taolo ea tefo ea betri ea TP4054. R27 e laola nako ea ho tjhaja betri. JP2 ke setulo sa 2P 1.25mm, se hoketsoeng le beteri. Q3 ke P-channel FET. R28 ke sehanyetsi sa marang-rang sa Q3 sa ho hula fatše. TP4054 e tjhaja betri ka phini ea BAT, e nyane ea R27 e hanyetsa, e kholoanyane ha e ntse e tjhaja, boholo ke 500mA. Q3 le R28 hammoho li theha potoloho ea betri, ha ho se na motlakase ka sebopeho sa mofuta oa C, + 5V vol.tage ke 0, ebe heke ea Q3 e huleloa ho ea boemong bo tlaase, draina le mohloli li ntse li le teng, 'me betri e fana ka matla ho module eohle ea pontšo. Ha e tsamaisoa ka sebopeho sa Type-C, +5V voltage ke 5V, ebe heke ea Q3 e phahame ka 5V, drainage le mohloli li khaotsoe, 'me phepelo ea betri e sitisoa. 11) 48P LCD phanele wire tjheseletsa segokanyimmediamentsi sa sebolokigolo

Setšoantšo sa 3.14 48P LCD panel wiring welding interface
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3.5inch ESP32-32E E32R35T&E32N35T Buka ea basebelisi

CR2024-MI3275

Potolohong ena, C24 ke "bypass filter capacitor", 'me QD1 ke 48P 0.8mm pitch liquid crystal screen welding interface. QD1 e na le pini ea lets'oao la "touch touch screen", LCD screen voltage pin, phini ea puisano ea SPI, phini ea taolo le phini ea potoloho ea backlight. ESP32 e sebelisa lithakhisa tsena ho laola LCD le sekirini sa ho ama. 12) Khoasolla potoloho ea senotlolo

Setšoantšo sa 3.15 Khoasolla konopo ea potoloho Potolohong ena, KEY2 ke senotlolo 'me R5 ke mohanyetsi oa ho hula. IO0 e phahame ka ho sa feleng ebile e tlase ha KEY2 e tobetsoa. Tobetsa o hatelle KEY2, bulela kapa seta bocha, 'me ESP32 e tla kenya mokhoa oa ho jarolla. Maemong a mang, KEY2 e ka sebelisoa e le senotlolo se tloaelehileng. 13) Potoloho ea ho lemoha matla a betri

Setšoantšo sa 3.15 Potoloho ea boemo ba betri
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3.5inch ESP32-32E E32R35T&E32N35T Buka ea basebelisi

CR2024-MI3275

Potolohong ena, R2 le R3 ke karolo e itseng ea voltage resistors, le C1 le C2 ke bypass filter capacitor. Matla a betri voltagKenyelletso ea lets'oao la e BAT + e feta ka har'a mohanyetsi oa karohano. BAT_ADC ke moqolotagE boleng lintlheng tse peli tsa R3, e fetisetsoang ho master ESP32 ka pini ea ho kenya, ebe e fetoloa ke ADC hore qetellong e fumane matla a betri.tage bohlokoa. Molumotage divider e sebelisoa hobane ESP32 ADC e fetolela boholo ba 3.3V, athe betri saturation vol.tage ke 4.2V, e tsoileng tseleng. Moqtage atisang ka 2 ke matla a sebele a betritage. 14) LCD backlight control circuit

Setšoantšo sa 3.16 LCD backlight control circuit Potolohong ena, R24 ke khanyetso ea debugging 'me e bolokiloe ka nakoana. Q4 ke N-channel field effect tube, R25 ke Q4 grid drop-down resistor, 'me R26 ke sehanyetsi sa morao-rao se thibelang khanya. Lebone la LCD le khanyang la LED lamp e boemong bo ts'oanang, palo e ntle e kopantsoe le 3.3V, 'me palo e mpe e hokahane le drain ea Q4. Ha phini ea taolo LCD_BL e hlahisa molumo o phahamengtage, drain le palo ea mohloli oa Q4 li buletsoe. Ka nako ena, palo e mpe ea lebone la LCD e thehiloe fatše, 'me leseli le ka morao la LED lamp e buletswe mme e ntsha kganya. Ha phini ea taolo LCD_BL e hlahisa molumo o tlasetage, mokelikeli le mohloli oa Q4 li khaotsoe, 'me leseli le ka morao la skrine la LCD le emisitsoe, le lebone le ka morao la LED l.amp ha e butsoe. Ka kamehla, lebone la LCD le tima. Ho fokotsa khanyetso ea R26 ho ka eketsa khanya e phahameng ea lebone la morao. Ntle le moo, pinana ea LCD_BL e ka kenya lets'oao la PWM ho lokisa leseli la LCD.
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3.5inch ESP32-32E E32R35T&E32N35T Buka ea basebelisi
15) RGB ea mebala e meraro ea taolo ea potoloho ea leseli

CR2024-MI3275

Setšoantšo sa 3.17 LCD backlight control circuit Potolohong ena, LED2 ke RGB e mebala e meraro l.amp, le R14~R16 ke l e mebala e meraroamp mohanyetsi oa hona joale oa moeli. LED2 e na le mabone a LED a khubelu, a botala le a boputsoa, ​​​​e leng khokahano e tloaelehileng ea anode, IO16, IO17 le IO22 ke lithapo tse tharo tsa taolo, tse khantšang mabone a LED maemong a tlase le ho tima mabone a LED maemong a holimo. 16) Potoloho ea sekotjana sa karete ea MicroSD

Setšoantšo sa 3.18 MicroSD card slot interface circuit Potolohong ena, SD_CARD1 ke slot ea karete ea MicroSD. R17 ho isa ho R21 ke lihanyetsi tse hulelang holimo bakeng sa phini ka 'ngoe. C26 ke "bypass filter capacitor". Potoloho ena ea sehokelo e sebelisa mokhoa oa puisano oa SPI. E ts'ehetsa polokelo e potlakileng ea likarete tsa MicroSD. Hlokomela hore sebopeho sena se arolelana bese ea SPI le SPI peripheral interface.
3.3. Litlhokomelo bakeng sa tšebeliso ea mojule oa ponts'o
1) Mojule oa ponts'o o qosoa ka betri, sebui sa kantle se bapala molumo, 'me skrine ea ponts'o le eona e ea sebetsa, ka nako ena kakaretso ea hona joale e kanna ea sebetsa.
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3.5inch ESP32-32E E32R35T&E32N35T Buka ea basebelisi

CR2024-MI3275

ho feta 500mA. Tabeng ena, o hloka ho ela hloko boholo ba hona joale bo tšehetsoeng ke thapo ea Type-C le boholo ba hajoale bo tšehetsoeng ke sebopeho sa phepelo ea motlakase ho qoba phepelo e sa lekaneng ea matla. 2) Nakong ea tšebeliso, u se ke ua ama LDO voltage regulator le taolo ea tefiso ea betri IC ka matsoho a hau ho qoba ho chesoa ke mocheso o phahameng. 3) Ha o kopanya sekepe sa IO, ela hloko tšebeliso ea IO ho qoba ho senya 'me tlhaloso ea khoutu ea lenaneo ha e lumellane. 4) Sebelisa sehlahisoa ka mokhoa o sireletsehileng le ka mokhoa o utloahalang.

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Litokomane / Lisebelisoa

Elecrow ESP32-32E 3.5 Inch Display Module [pdf] Bukana ea Mosebelisi E32R35T, E32N35T, ESP32-32E 3.5 Inch Display Module, ESP32-32E, 3.5 inch Display Module, Display Module, Mojule

Litšupiso

• Bukana ea Mosebelisi