LCD Zaub Hloov Chaw Tswj Mechanism

 

LCD (ua kua siv lead ua cov zaub) Hauv cov khoom siv hluav taws xob niaj hnub, lcd zaub rau / tawm tswj tau cuam tshuam ntau dua li yooj yim lub hwj chim ntawm / tawm; Nws tseem cuam tshuam nrog cov series ntawm sij hawm tswj hwm thiab lub xeev kev tswj hwm.

 

Cov ntsiab cai tswj hwm kev tswj hwm
LCD Zaub Hloov Kev Tswj Xyuas yog feem ntau tau siv siv cov cim tseem ceeb hauv qab no:

Lub zog tswj cov cim (VCC / VDD): Muab cov chaw ua haujlwm ua haujlwm rau cov zaub

Backlight tswj lub teeb liab (bl_en): tswj lub backlight ntawm thiab tawm

Rov qab pib teeb liab (rov pib dua): Pib cov zaub maub los

Cov ntaub ntawv / hais kom paub cov cim (DC / RS): Contactises seb cov ntaub ntawv lossis cov lus txib tau kis tau

Nti xaiv teeb liab (CS): Xaiv cov qauv qhia tshwj xeeb

 

Raug Tswj Tsiv

Hwj chim -} Nyob rau ntu

Lub Hwj Chim Tswj IC muab cov kev ua haujlwm ruaj khov (feem ntau yog 3.3V lossis 5V)

Tus maub los xa cov chaw pib dua tshiab (nquag qis, feem ntau 10-100ms)

Tos rau cov zaub kom tiav sab hauv kev pib (kwv yees li ntawm 120-200ms)

Xa cov lus pib ua ntu zus rau kev teeb tsa cov zaub

Thaum kawg, pab kom lub Backlight Fais Fab Khoom

 

Hwj chim - tawm ntawm cov ua ntu zus

Ua ntej, tig tawm lub backlight fais fab mov

Xa cov zaub kaw lus hais kom ua

Disconnect lub zog tseem ceeb

Ceev cov teeb liab pib dua (yeem)

 

Hardware Siv

Niaj hnub siv LCD tswj feem ntau siv ib ntawm ob txoj kev:

Dedicated zaub tswj hwm tswj hwm: cov chips ib yam xws li RA8875 thiab SSD1306 muab kev tswj tiav kev tswj hwm.

MCU tswj ncaj qha: Lub microcontroller emulates sijhawm ntawm GPIO, haum rau cov zaub ua ke yooj yim.

 

Software Tswj Lub Tswv Yim

Software {- kev txiav txim siab muaj xws li:

Kev tswj hwm ncua: nruj me ntsis rau lub sijhawm tsawg tshaj plaws ntawm txhua kauj ruam.

Xeev khaws cia: Txuag cov kev qhia tam sim no ua ntej kaw kom sai sai.

Yuam kev tuav: Ntes thiab lis kev pib ua tsis tiav thiab lwm yam xwm txheej.

Zog -} kev txuag hom: siv qis - power xeev xws li sawv ntsug thiab pw tsaug zog.

Cov kev xav thov tswv yim: Tsis txhob muaj lub zog loj me me (pom zoo cov sijhawm tsawg kawg ntawm 5 vib nas this).

Siv lub sijhawm pib lub sijhawm nyob rau hauv ib puag ncig kub.

Xav txog kev tsim qauv ESD tiv thaiv Circuit Court.

Backlight tswj siv PWM Simming es tsis yooj yim ntawm / tawm yog qhov pom zoo.

 

Tiam sis kev loj hlob

Tom ntej no -}}} partlation lcd tswj tshuab yog txav ntawm cov hauv qab no:

Kev sib xyaw ua haujlwm lub zog

Txhawb nqa lub sijhawm sai sai

Kev Ntsej Muag Zoo

Txo - Lub Zog Pom Kev Loj

Ua kom zoo rau LCD zaub Power Felfet kev tswj hwm cov cuab yeej tuaj yeem txhim kho lub neej kev ntseeg tau thiab txuas ntxiv rau cov neeg siv khoom zoo dua rau cov neeg siv.