LCDWIKI ESP32-32E 2.8inch Nuni Module Manual

Samfurin ya ƙunshi albarkatu daban-daban kamar sampda shirye-shirye, dakunan karatu na software, ƙirar hardware, da ƙari. Koma zuwa kundin bayanin Fakitin bayanai don cikakkun bayanai.

Umarnin Software:

Don haɓaka software don ƙirar nuni:

Gina yanayin haɓaka software na dandamali na ESP32.
Shigo da ɗakunan karatu na software na ɓangare na uku idan an buƙata.

Buɗe ko ƙirƙirar aikin software don gyara kuskure.
Ƙaddamar da tsarin nuni, tara, zazzage shirin, kuma duba tasirin.

Idan tasirin bai kasance kamar yadda ake tsammani ba, gyara lambar kuma maimaita aikin.

Koma zuwa takaddun da ke cikin 1-Demo directory don cikakkun matakai.

Umarnin Hardware:
Umarnin hardware yana ba da ƙarewaview na albarkatun module, zane-zane, da matakan tsaro don amfani. Tabbatar da bin waɗannan jagororin don ingantaccen aiki na ƙirar nuni.

Tambayoyin da ake yawan yi

Tambaya: A ina zan sami umarnin saitin yanayin haɓaka software?
A: Ana iya samun umarnin saitin a cikin 1-_Demo directory tare da wasu takaddun da suka dace.

Tambaya: Menene ma'auni na ƙirar nuni?
A: Ana iya samun girman samfurin da zane na 3D a cikin sashin 3-_Structure_Diagram na albarkatun samfur.

Bayanin albarkatun ƙasa

Ana nuna kundin adireshi a cikin adadi mai zuwa:

Jagora	Bayanin Abun ciki
1-Demo	A sampLe program code, ɗakin karatu na software na ɓangare na uku wanda sampshirin ya dogara da, maye gurbin ɗakin karatu na software na ɓangare na uku file, daftarin aiki na saitin ci gaban software, da sample shirin umarni daftarin aiki.
2_Ƙayyadaddun bayanai	Nuni samfurin ƙayyadaddun samfur, ƙayyadaddun allo na LCD da lambar ƙaddamarwa direba IC LCD nuni.
3-Tsarin_Tsarin	Nuna girman samfurin samfurin da zanen 3D na samfur
4- Takardar bayanai	LCD nuni direban ILl9341 littafin bayanai, juriya tabawa direba XPT2046 data littafin, ESP32 master data littafin da hardware zane daftarin aiki, USB zuwa Serial IC(CH340C) bayanai littafin, audio littafin ampLififiar guntu FM8002E littafin bayanai, 5V zuwa 3.3V littafin bayanan mai sarrafa da cajin batirin Chip TP4054 bayanan bayanan.
5-Tsarin tsari	Tsarin kayan aikin samfur, ESP32-WROOM-32E module 10 tebur rabon albarkatu, tsari da fakitin ɓangaren PCB
6-Mai amfani_Manual	Takardun mai amfani da samfur
7I- Tool_software	WIFI da Bluetooth sun gwada APP da kayan aikin lalata, USB zuwa direban tashar tashar jiragen ruwa, ESP32 Flash download kayan aikin software, software mai ɗaukar hoto, software na ɗaukar hoto, software na sarrafa hoto na JPG da kayan aikin gyara tashar jiragen ruwa.
8-Saurin_Farawa	Bukatar ƙone bin file, kayan aikin zazzage walƙiya da amfani da umarni.

Umarnin Software

Matakan haɓaka software na nuni sune kamar haka:

Gina ESP32 yanayin haɓaka software;
idan ya cancanta, shigo da dakunan karatu na software na ɓangare na uku a matsayin tushen ci gaba;

bude aikin software don gyarawa, za ku iya ƙirƙirar sabon aikin software;
iko akan tsarin nuni, tarawa da zazzage shirin gyara kurakurai, sannan duba tasirin aikin software;

Tasirin software bai kai ga abin da ake tsammani ba, ci gaba da canza lambar shirin, sannan a tattara da zazzagewa, har sai tasirin ya kasance daidai da abin da ake tsammani;

Don cikakkun bayanai game da matakan da suka gabata, duba takaddun a cikin jagorar 1 1-Demo.

Umarnin Hardware

Ƙarsheview na module hardware albarkatun aka nuna
Ana nuna albarkatun kayan masarufi a cikin adadi biyu masu zuwa:

An bayyana albarkatun kayan aikin kamar haka:

LCD
Girman nunin LCD shine inci 2.8, direban IC shine ILI9341 , kuma ƙuduri shine 24 0x 32 0. An haɗa ESP32 ta amfani da hanyar sadarwar SPI mai waya 4.
- Gabatarwa zuwa mai sarrafa ILI9341
  Mai sarrafa ILI9341 yana goyan bayan matsakaicin ƙuduri na 240*320 da a172800-byte GRAM. Hakanan yana goyan bayan 8-bit, 9-bit, 16-bit, da 18-bit daidaitattun bayanan bayanan tashar jiragen ruwa. Hakanan yana goyan bayan 3-waya da 4-waya SPI serial ports. Tunda sarrafawar layi daya yana buƙatar adadi mai yawa na tashar jiragen ruwa na IO, wanda ya fi kowa shine sarrafa tashar tashar jiragen ruwa ta SPI. ILI9341 kuma yana goyan bayan nunin launi na 65K, 262K RGB, launin nuni yana da wadatar gaske, yayin da yake tallafawa nunin juyawa da gungurawa da sake kunna bidiyo, nuni ta hanyoyi daban-daban.
  Mai sarrafa ILI9341 yana amfani da 16bit (RGB565) don sarrafa nunin pixel, don haka zai iya nuna har zuwa launuka 65K akan kowane pixel. Ana yin saitin adireshin pixel a cikin jeri na layuka da ginshiƙai, kuma yanayin haɓakawa da ragewa yana ƙayyade ta yanayin dubawa. Ana yin hanyar nunin ILI9341 ta saita adireshin sannan saita ƙimar launi.
- Gabatarwa zuwa ka'idar sadarwa ta SPI
  Yanayin rubutu na bas ɗin SPI mai waya 4 4 ana nuna shi a cikin adadi mai zuwa:
  CSX zaɓin guntu na bawa ne, kuma guntu za a kunna shi ne kawai lokacin da CSX ya kasance a ƙaramin ƙarfi.
  D/CX shine fil ɗin sarrafa bayanai/ umarni na guntu. Lokacin da DCX ke rubuta umarni a ƙananan matakan, an rubuta bayanai a manyan matakan SCL shine agogon bas na SPI, tare da kowane gefen tashi yana watsa 1 bit na bayanai;
  SDA shine bayanan da SPI ke watsawa, wanda ke watsa bayanai guda 8 a lokaci guda. Ana nuna tsarin bayanan a cikin adadi mai zuwa:
  Babban bit farko, watsa farko.
  Don sadarwar SPI, bayanai suna da lokacin watsawa, tare da haɗin lokaci na lokaci-lokaci (CPHA) da polarity clock (CPOL):
  Matsayin CPOL yana ƙayyade matakin halin rashin aiki na agogon serial synchronous, tare da CPOL=0, yana nuna ƙaramin matakin. CPOL Biyu watsa yarjejeniya
  Tattaunawar ba ta da tasiri sosai;
  Tsayin CPHA yana ƙayyade ko agogon serial synchronous yana tattara bayanai a gefen tsalle na farko ko na biyu,
  Lokacin da CPHL = 0, yi tarin bayanai a farkon canjin canji;
  Haɗin waɗannan biyun ya zama hanyoyin sadarwa na SPI guda huɗu, kuma SPI0 ana amfani da ita a China, inda CPHL=0 da CPOL=0
Resistive Touch Screen
Allon taɓawa mai tsayayya yana da inci 2.8 a girman kuma an haɗa shi da XPT2046 iko IC ta hanyar fil huɗu: XL, XR, YU, YD.
Module ESP32ESP32-WROOMWROOM-32E
Wannan ƙirar tana da guntu ESP32-DOWD-V3 da aka gina a ciki, Xtensa dual-core 32-bit LX6 microprocessor, kuma yana goyan bayan ƙimar agogo har zuwa 240MHz. Yana da 448KB ROM, 520KB SRAM, 16KB RTC SRAM, da 4MB QSPI Flash. 2.4GHz WIFI, Bluetooth V4.2 da Bluetooth Low Power modules ana tallafawa. GPIO 26 na waje, katin SD na goyan baya, UART, SPI, SDIO, I2C, LED PWM, motor PWM, I2S, IR, counter pulse counter, GPIO, firikwensin taɓawa, ADC, DAC, TWAI da sauran abubuwan haɗin gwiwa.
Slot na MicroSD
Amfani da yanayin sadarwa na SPI da haɗin ESP32, goyan bayan katunan MicroSD na iyakoki daban-daban.
RGB Haske mai launi uku
Za a iya amfani da fitulun LED na ja, koren kore da shuɗi don nuna yanayin tafiyar da shirin.
Serial Port
Ana amfani da tsarin tashar tashar jiragen ruwa na waje don sadarwar tashar tashar jiragen ruwa.
Kebul zuwa Serial Port kuma danna Zazzagewa ta dannawa ɗaya
Babban na'urar ita ce CH340C, ana haɗa ƙarshen ɗaya zuwa kwamfutar USB, ƙarshen ɗaya yana haɗa zuwa tashar tashar ESP32, don cimma tashar tashar USB zuwa TTL.
Bugu da kari, ana kuma manne da da’irar zazzagewa ta hanyar danna sau daya, wato lokacin zazzage manhajar, za ta iya shiga yanayin da ake saukewa kai tsaye, ba tare da bukatar taba ta waje ba.
Interface na baturi
Biyu-pin dubawa, daya don tabbatacce lantarki, daya don korau electrode, samun damar baturi da caji.
Cajin baturi e da Da'irar Gudanar da Fitar
Babban na'urar ita ce TP4054, wannan da'irar na iya sarrafa cajin baturi na yanzu, ana cajin baturin lafiya zuwa yanayin jikewa, amma kuma yana iya sarrafa fitar da baturi cikin aminci.
Maɓallin BOOT
Bayan an kunna samfurin nuni, dannawa zai rage IO0. Idan lokacin da aka kunna tsarin ko aka sake saitin ESP32, rage IO0 zai shiga yanayin zazzagewa. Wasu lokuta ana iya amfani da su azaman maɓalli na yau da kullun.
Interface Type-C
Babban tsarin samar da wutar lantarki da shirye-shiryen suna yin wnload interface na ƙirar nuni. Haɗa kebul na USB zuwa tashar tashar jiragen ruwa da da'irar zazzagewar dannawa ɗaya, ana iya amfani da ita don samar da wutar lantarki, zazzagewa da sadarwar serial.
5V zuwa 3.3V Voltage Regulator Circuit
Babban na'urar shine ME6217C33M5G LDO mai daidaitawa. Ta voltage regulator circuit yana goyan bayan 2V ~ 6.5V m voltage shigarwar, 3.3V barga voltage fitarwa, kuma matsakaicin fitarwa na halin yanzu shine 800mA, wanda zai iya cika juzu'itage da bukatun halin yanzu na ƙirar nuni.
Sake saitin Maɓalli
Bayan an kunna tsarin nunin, latsawa zai ja maɓallin sake saiti na ESP32 ƙasa (tsarin yanayin yana jan sama), don cimma aikin sake saiti.

Resistive Touch Screen Control Circuit
Babban na'urar ita ce XPT2046, wacce ke sadarwa tare da ESP32 ta hanyar SPI.
Wannan kewayawa ita ce gada tsakanin allon taɓawa mai tsayayya da maigidan ESP32, wanda ke da alhakin watsa bayanan akan allon taɓawa zuwa maigidan ESP32, ta yadda za a sami haɗin kai na wurin taɓawa.
Fadada fil
Ba a amfani da tashar shigar da tashar IO, GND, da 3.3V fil a kan tsarin ESP32 don amfani na gefe.
kewaye kula da hasken baya
Babban na'urar shine bututun tasirin filin BSS138. Ɗayan ƙarshen wannan da'irar an haɗa shi da fil ɗin sarrafa hasken baya akan maigidan ESP32, ɗayan kuma an haɗa shi da mummunan sandar hasken baya na allo na LCD LED l.amp. Fitin sarrafa hasken baya yana ja sama, hasken baya, in ba haka ba a kashe.

Mai magana da magana
Dole ne a haɗa tashoshin wayoyi a tsaye. Ana amfani da su don samun damar lasifika da lasifika.
Ƙarfin sauti amp kewaye kewaye
Babban na'urar ita ce sautin FM8002E ampFarashin IC. Ɗayan ƙarshen wannan da'irar yana haɗe zuwa ESP32 audio DAC fitarwa fil kuma ɗayan ƙarshen yana haɗe da ƙaho. Ayyukan wannan da'irar shine don fitar da ƙaramin ƙarfin ho rn ko lasifika zuwa sauti. Don samar da wutar lantarki 5V, matsakaicin ƙarfin tuƙi shine 1.5W (Load 8 ohms) ko 2W (Load 4 ohms).
SPI na gefe dubawa
4-waya kwance ke dubawa. Fitar da fil ɗin zaɓin guntu da ba a yi amfani da shi ba da fil ɗin dubawar SPI da katin MicroSD ke amfani da shi, wanda za a iya amfani da shi don na'urorin SPI na waje ko na yau da kullun na IO.

Cikakken bayani na zane-zane na ƙirar nuni

TypeType-C dubawa kewaye
A cikin wannan da'irar, D1 shine Schottky diode, wanda ake amfani dashi don hana halin yanzu daga juyawa. D2 zuwa D4 diodes ne na kariyar hawan lantarki don hana tsarin nunin lalacewa saboda wuce gona da iritage ko gajeriyar kewayawa. R1 shine juriyar ja da ƙasa. USB1 bas ne na Type-C. Tsarin nunin yana haɗawa da samar da wutar lantarki ta TypeType-C, shirye-shiryen zazzagewa, da sadarwar tashar tashar jiragen ruwa ta hanyar USB1. Inda +5V da GND ke tabbataccen ƙarfin voltage da sigina na ƙasa USB_D D- da USB_D+ sigina na USB daban ne, waɗanda ake watsa su zuwa kebul na USB-zuwa serial kewaye.
5V zuwa 3.3V voltage regulator circuit
A cikin wannan da'irar, C16 ~ C19 ita ce capacitor fil fil, wanda ake amfani dashi don kula da kwanciyar hankali na shigarwar vol.tage da fitarwa voltage. U1 shine 5V zuwa 3.3V LDO tare da lambar ƙirar ME6217C33M5G. Saboda yawancin da'irori akan tsarin nuni suna buƙatar samar da wutar lantarki na 3.3V, kuma shigar da wutar lantarki na nau'in nau'in nau'in C shine ainihin 5V, don haka vol.tage regulator hira da'irar ana r bukata.

Resistive touch allon kula da kewaye
A cikin wannan da'irar, C25 da C27 su ne na'urorin tacewa ta hanyar wucewa, waɗanda ake amfani da su don kiyaye shigar da vol.tage kwanciyar hankali. R22 resistors ne masu ja da baya da ake amfani da su don kula da tsohowar fil mai girma. U4 shine XPT2046 iko IC, aikin wannan IC shine don samun haɗin haɗin gwiwa.tage darajar ma'anar taɓawa na allon taɓawa ta juriya ta hanyar X+, X X-, Y+, Y Y- fil huɗu, sannan ta hanyar juyawa ADC, ana watsa darajar ADC zuwa maigidan ESP32. Maigidan ESP32 sannan ya canza ƙimar ADC zuwa ƙimar daidaitawar pixel na nuni. Fitin PEN shine fil ɗin katsewar taɓawa, kuma matakin shigarwa yana da ƙasa lokacin da abin taɓawa ya faru.
Kebul zuwa tashar tashar jiragen ruwa da da'irar zazzagewar dannawa ɗaya
A cikin wannan kewaye, U3 shine CH340C USB USB-to -serial IC, wanda baya buƙatar oscillator crystal na waje don sauƙaƙe ƙirar kewaye. C6 shine madaidaicin tacewa ta hanyar wucewa da ake amfani dashi don kula da shigar voltage kwanciyar hankali. Q1 da Q2 sune nau'in NPN triodes, kuma R6 da R7 sune tushen triode masu iyakancewa na yanzu. Ayyukan wannan da'irar shine gane USB zuwa tashar tashar jiragen ruwa da aikin saukewa sau ɗaya danna sau ɗaya. Siginar USB shigarwa da fitarwa ne ta UD+ da UD UD- fil, kuma ana watsa shi zuwa maigidan ESP32 ta hanyar RXD da TXD fil bayan juyawa. Ka'idar zazzagewar dannawa ɗaya ɗaya:
- RST da DTR fil na CH340C babban matakin fitarwa ta tsohuwa. A wannan lokacin, Q1 da Q2 triode ba su kunne, kuma IO0 fil da sake saiti na babban iko na ESP32 ana ja su zuwa babban matakin.
- RST da DTR fil na CH340C fitarwa ƙananan matakan, a wannan lokacin, Q1 da Q2 triode har yanzu ba a kunne ba, kuma IO0 fil da sake saiti na babban iko na ESP32 har yanzu ana ja su zuwa manyan matakai.
- Fitin RST na CH340C ya kasance baya canzawa, kuma fil ɗin DTR yana fitar da babban matakin. A wannan lokacin, har yanzu an yanke Q1, Q2 yana kunne, IO0 fil na ESP32 master har yanzu yana jan sama, kuma fil ɗin sake saiti yana ja ƙasa, kuma ESP32 ya shiga yanayin sake saiti.
- CH340C's RST fil yana fitar da babban matakin, DTR fil yana fitar da ƙaramin matakin, a wannan lokacin Q1 yana kunne, Q2 yana kashe, sake saitin fil na ESP32 main control ba zai yi sauri ba ely ya zama babba saboda ana cajin capacitor da aka haɗa, ESP32 har yanzu yana cikin yanayin sake saiti, kuma IO0 fil ɗin nan take zazzage shi zai shiga, a wannan lokacin zazzagewa.

Ƙarfin sauti ampkewaye kewaye
A cikin wannan da'irar, R23, C7, C8 da C9 sun haɗa da da'irar tacewar RC, kuma R10 da R13 sune ribar daidaitawar masu aiki. amplififi. Lokacin da ƙimar juriya na R13 ba ta canzawa, ƙarami ƙimar juriya na R10, mafi girman ƙarfin juriya na lasifikar waje. C10 da C11 su ne masu shigar da haɗin kai. R11 shine resistor ja-up. JP1 ita ce tashar ƙaho/lasifika. U5 shine FM8002E ƙarfin sauti ampFarashin IC. Bayan shigar da AUDIO_IN, siginar DAC mai jiwuwa ita ce ampLified ta FM8002E samun d fitarwa zuwa mai magana/magana ta VO1 da VO2 fil. SHUTDOWN shine fil ɗin kunna FM8002E. An kunna ƙananan matakin. Ta hanyar tsoho, ana kunna babban matakin.
ESP32-WROOMWROOM-32E babban kula da kewaye
A cikin wannan da'irar, C4 da C5 sune masu iya tacewa ta hanyar wucewa, kuma U2 sune ESP32ESP32-WROOMWROOM-32E. Don cikakkun bayanai game da da'irar ciki na wannan ƙirar, da fatan za a koma zuwa takaddun hukuma.
Maɓallin sake saitin kewayawa
A cikin wannan da'irar, KEY1 shine maɓalli, R4 shine resistor mai ja, kuma C3 shine capacitor na jinkiri. Sake saitin ƙa'ida:
- Bayan kunna wutar lantarki, C3 yayi caji. A wannan lokacin, C3 yayi daidai da gajeriyar kewayawa, RESET fil yana ƙasa, ESP32 yana shiga yanayin sake saiti.
- Lokacin da aka caje C3, C3 yayi daidai da buɗe da'ira, RESET fil an ja sama, an gama saitin ESP32, kuma ESP32 ya shiga yanayin aiki na yau da kullun.
- Lokacin da aka latsa KEY1, fil ɗin RESET yana ƙasa, ESP32 yana shiga yanayin sake saiti, kuma ana fitar da C3 ta hanyar KEY1.
- Lokacin da aka fito da KEY1, ana caje C3. A wannan lokacin, C3 yayi daidai da gajeriyar kewayawa, RESET fil yana ƙasa, ESP32 har yanzu yana cikin yanayin SAKETA. Bayan cajin C3, fil ɗin sake saiti yana ja sama, an sake saitin ESP32 kuma ya shiga yanayin aiki na yau da kullun.
  Idan Sake saitin bai yi nasara ba, ƙimar haƙurin C3 za a iya ƙarawa yadda ya kamata don jinkirta ƙaramar matakin matakin sake saitin fil.
Interface kewaye na serial module
A cikin wannan da'irar, P2 shine wurin zama na 4P 1.25mm, R29 da R30 sune masu tsayayyar ma'auni na impedance, kuma Q5 shine bututun tasirin filin da ke sarrafa isar da wutar lantarki ta 5V.
R31 resistor ne mai ja da ƙasa. Haɗa RXD0 da TXD0 zuwa serial fil, kuma ba da wuta ga sauran fil biyun. Ana haɗa wannan tashar jiragen ruwa zuwa tashar tashar jiragen ruwa iri ɗaya da kebul na USB-to-serial port module.
Fadada IO da da'irori na kewaye
A cikin wannan da'irar, P3 da P4 sune kujerun farar 4P 1.25mm. SPI_CLK, SPI_MISO, SPI_MOSI fil suna raba tare da katin MicroSD SPI fil. Fil SPI_CS, IO35 ba sa amfani da na'urorin da ke kan jirgi, don haka ana fitar da su don haɗa SPI, kuma ana iya amfani da su don IO na yau da kullun. Abubuwan da ya kamata a lura da su:
- IO35 na iya zama shigarwar pi ns kawai;
Cajin baturi da kewaye sarrafa fitarwa
A cikin wannan da'irar, C20, C21, C22 da C23 sune capacitors filter filter. U6 shine sarrafa cajin baturi na TP4054 IC. R27 yana daidaita cajin baturi na yanzu. JP2 wurin zama na farar 2P 1.25mm, an haɗa shi da baturi. Q3 shine tashar P P-FET. R28 shine grid Q3 mai juye-saukar resistor. TP4054 yana cajin baturi ta hanyar fil ɗin BAT, ƙaramin juriya na R27, mafi girman cajin halin yanzu, matsakaicin shine 500mA. Q3 da R28 tare sun zama da'irar fitar da baturi, lokacin da babu wutar lantarki ta hanyar nau'in Type-C, + 5V vol.tage shine 0, sa'an nan kuma an ja ƙofar Q3 zuwa ƙananan matakin, magudanar ruwa da tushen suna kunne, kuma baturi yana ba da wutar lantarki ga dukan tsarin nuni. Lokacin da aka kunna ta hanyar nau'in Type-C, + 5V voltage shine 5V, sannan ƙofar Q3 tana da tsayi 5V, an yanke magudanar ruwa da tushen, kuma ana katse kayan batir y.
18P LCD panel waya waldi dubawa
A cikin wannan da'irar, C24 shine madaidaicin matattarar tacewa, kuma QD1 shine 48P 0.8mmpitch na'urar walda ruwan kristal. QD1 yana da siginar siginar allon taɓawa na juriya, allon LCD voltage fil, fil ɗin sadarwa na SPI, fil ɗin sarrafawa da fil ɗin kewayawa na baya. ESP32 yana amfani da waɗannan fil don sarrafa LCD da allon taɓawa.

Zazzage maɓallin kewayawa
A cikin wannan da'irar, KEY2 shine maɓalli kuma R5 shine resistor mai ja. IO0 yana da girma ta tsoho kuma yana da ƙasa lokacin da aka danna KEY2. Latsa ka riƙe KEY2, kunnawa ko sake saiti, kuma ESP32 zai shigar da yanayin saukewa. A wasu lokuta, ana iya amfani da KEY2 azaman maɓalli na yau da kullun.
Da'irar wutar lantarki
A cikin wannan da'irar, R2 da R3 suna partal voltage resistors, da C1 da C2 sune masu iya tacewa. Baturin voltage BAT+ shigar da siginar yana wucewa ta cikin resistor resistor. BAT_ADC shine voltage darajar a duka ƙarshen R3, wanda ake aikawa zuwa ESP32 master ta hanyar shigar da fil, sa'an nan kuma canza ta ADC zuwa karshe samun baturi vol.tage daraja. VoltagAna amfani da mai rarrabawa saboda ESP32 ADC yana canza matsakaicin 3.3V, yayin da jikewar baturi vol.tage shine 4.2V, wanda ba shi da iyaka. The samu voltage ninka ta 2 shine ainihin baturin voltage.
LCD kula da hasken baya
A cikin wannan da'irar, R24 shine juriya na gyara kurakurai kuma ana kiyaye shi na ɗan lokaci. Q4 shine bututun tasirin filin N N-tashar, R25 shine grid Q4 mai juye juye-juye, kuma R26 shine mai iyakance hasken baya na yanzu. Hasken baya na LCD LED lamp yana cikin layi ɗaya, madaidaicin sandar yana da alaƙa da 3.3V, kuma an haɗa sandar mara kyau zuwa magudanar Q4. Lokacin da fil ɗin sarrafawa LCD_BL yana fitar da babban voltage, an kunna magudanar ruwa da sandar tushe na Q4. A wannan lokacin, ƙananan igiya mara kyau na hasken baya na LCD yana ƙasa, kuma hasken baya LED lamp yana kunna kuma yana fitar da haske.
Lokacin da fil ɗin sarrafawa LCD_BL yana fitar da ƙaramin voltage, an yanke magudanar ruwa da tushen Q4, kuma an dakatar da hasken baya mara kyau na allon LCD, kuma hasken baya LED l.amp ba a kunna. Ta tsohuwa, hasken baya na LCD yana kashe.
Rage juriya na R26 na iya ƙara matsakaicin haske na hasken baya.
Bugu da kari, LCD_BL fil na iya shigar da siginar PWM don daidaita hasken baya na LCD.

RGB mai kula da haske mai launi uku
A cikin wannan kewaye, LED2 RGB ne mai launi uku lamp, kuma R14 ~ R16 l mai launi uku neamp na yanzu iyakance resistor. LED2 yana ƙunshe da fitilun LED ja, kore da shuɗi, waɗanda haɗin haɗin anode na gama gari, IO16, IO17 da IO22 fil ɗin sarrafawa ne guda uku, waɗanda ke haskaka fitilun LED a ƙananan matakin kuma suna kashe hasken LED a babban matakin.
MicroSD katin Ramin dubawa kewaye
A cikin wannan da'irar, SD_CARD1 shine ramin katin MicroSD. R17 zuwa R21 sune masu juye-juye don kowane fil. C26 shine capacitor tacewa. Wannan kewayon keɓancewa yana ɗaukar yanayin sadarwa na SPI. Yana goyan bayan babban ajiya mai sauri na katunan MicroSD.
Lura cewa wannan interf ace yana raba bas ɗin SPI tare da keɓantawar SPI.

Kariya don amfani da module nuni

Ana cajin tsarin nunin tare da baturi, mai magana da waje yana kunna sauti, kuma allon nuni shima yana aiki, a wannan lokacin jimlar halin yanzu na iya wuce 500mA. A wannan yanayin, kuna buƙatar kula da matsakaicin halin yanzu da ke goyan bayan nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau’in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau’in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in) yana da tallafin kebul na Nau'in Type-C da kuma matsakaicin matsakaicin da ke goyan bayan injin samar da wutar lantarki don guje wa ƙarancin wutar lantarki.
Lokacin amfani, kar a taɓa LDO voltage regulato r da sarrafa cajin baturi IC tare da hannuwanku don gujewa konewa ta babban zafin jiki.
Lokacin haɗa tashar tashar IO, kula da yadda ake amfani da IO don guje wa rashin haɗin kai kuma ma'anar lambar shirin ba ta dace ba.

Yi amfani da samfurin a amince da hankali da hankali.

www.lcdwiki.com

Takardu / Albarkatu

LCDWIKI ESP32-32E 2.8inch Nuni Module [pdf] Manual mai amfani
ESP32-32E 2.8inch Nuni Module, ESP32-32E, 2.8inch Nuni Module, Nuni Module, Module

Magana

Manual mai amfani

LCDWIKI ESP32-32E 2.8inch Nuni Module

Bayanin samfur

Umarnin Amfani da samfur