Yuav ua li cas 2024, Kaum ib hlis

Chladni-plaat: 4 Kauj Ruam

Chladni-plaat: 4 Kauj Ruam

Chladni-plaat: Een Chladni plaat yog een apparaat waarmee geluidsgolven hauv een plaat gevisualiseerd kunnen worden. Dit wordt gedaan door een trillingsbron (in dit geval twee luidsprekers) te bevestigen aan een dunne metalen plaat. Deze plaat zal vervolgens meetrill

Yuav Kho Li Cas Txiav lossis Lub Hwj Huam Fais Fab Puas: 6 Kauj Ruam

Yuav Kho Li Cas Txiav lossis Lub Hwj Huam Fais Fab Puas: 6 Kauj Ruam

Yuav Kho Li Cas Txiav lossis Lub Hwj Chim Lub Cev Puas: Cov neeg cog lus ua cov haujlwm nyuaj ua kom muaj zog ntawm lawv lub cev thiab cov cuab yeej. Piv txwv li, kev puas tsuaj rau cov hlua fais fab yog ib txwm muaj. Qhov kev puas tsuaj no yog qhov tsis tsim nyog hauv qee kis thaum nws tuaj yeem txiav me me hauv lwm tus. Nws tuaj yeem mob hnyav hauv qee kis. Tsis yog

Moonbunny As Nightlight: 3 Kauj Ruam

Moonbunny As Nightlight: 3 Kauj Ruam

Moonbunny As Nightlight: Kuv tus tub (yuav luag 3) xav tau hmo ntuj ntawm nws lub txaj. Thiab raws li kuv muaj lub tshuab luam ntawv 3d thiab kuv pom tias lub hli hollow txias, kuv tau luam tawm ib qho rau nws. Ua raws kuv ntawm Instagram rau xov xwm tshiab kawg

Precise Peristaltic Pump: 13 Cov Kauj Ruam

Precise Peristaltic Pump: 13 Cov Kauj Ruam

Precision Peristaltic Pump: Peb yog pab pawg tub ntxhais kawm los ntawm kev qhuab qhia sib txawv ntawm RWTH Aachen University thiab tau tsim txoj haujlwm no hauv qhov xwm txheej ntawm 2017 kev sib tw iGEM. Tom qab txhua txoj haujlwm uas tau mus rau hauv peb lub twj tso kua mis, peb xav qhia peb cov txiaj ntsig nrog koj ! Peb tsim

Netcat hauv Python: 6 Kauj Ruam

Netcat hauv Python: 6 Kauj Ruam

Netcat hauv Python: netcat yog dab tsi? Phau ntawv nplooj ntawv rau netcat hais cov hauv qab no: " nc (lossis netcat) cov khoom siv tau siv rau tsuas yog ib yam dab tsi hauv qab lub hnub nrog TCP, UDP, lossis UNIX-sau nyob. Nws tuaj yeem qhib TCP kev sib txuas, xa UDP pob ntawv, mloog ntawm arb

ATmega8 Raws li Arduino (siv Sab Hauv 8Mhz Crystal): 7 Kauj Ruam (nrog Duab)

ATmega8 Raws li Arduino (siv Sab Hauv 8Mhz Crystal): 7 Kauj Ruam (nrog Duab)

ATmega8 Raws li Arduino (siv Sab Hauv 8Mhz Crystal): Tam sim no, cov cuab yeej zoo li Arduino tau pom muaj kev siv nrov heev. Lawv tuaj yeem siv los tsim ntau qhov haujlwm, txawm li cas los xij, lawv nyob hauv ntau qhov chaw thiab kim rau peb qee tus (suav nrog kuv). Txhawm rau daws qhov teeb meem no, kuv nthuav qhia rau koj qhov kev qhia no

Portable Bluetooth Speaker 2X3W: 5 Kauj Ruam (nrog Duab)

Portable Bluetooth Speaker 2X3W: 5 Kauj Ruam (nrog Duab)

Portable Bluetooth Speaker 2X3W: Txheeb xyuas cov vis dis aus saum toj no rau txhua qib thiab ntsuas suab. 2X3 Watt bluetooth hais lus los ntawm seem ntooList: Bluetooth module Ntawm no lossis Ntawm no Lub txhab nyiaj fais fab 2600 mAh Ntawm no lossis Ntawm no 3 watt hais lus Kuv siv Tus Txuas, nws haum lossis koj tuaj yeem xaiv zoo ib yam txuas nrog

Universal Mini OMTP ↔ CTIA Adapter - Convertendo: 7 Kauj Ruam (nrog Duab)

Universal Mini OMTP ↔ CTIA Adapter - Convertendo: 7 Kauj Ruam (nrog Duab)

Universal Mini OMTP ↔ CTIA Adapter - Convertendo: Yog tias koj muaj qee lub pob ntseg qub lossis xov tooj ntawm tes dag ib puag ncig, koj yuav tau pom tias lub pob ntseg qub tsis sib haum nrog cov xov tooj tam sim no thiab cov xov tooj qub tsis txhawb nqa lub tshiab pob ntseg Tias yog vim li cas cov laus nkag mus

IR Lub Koob Yees Duab Kub: 16 Kauj Ruam

IR Lub Koob Yees Duab Kub: 16 Kauj Ruam

IR Thermal Lub Koob Yees Duab: Koj puas tau saib cov yeeb yaj kiab sci-fi lossis ua yeeb yaj kiab, qhov twg cov cim txav mus rau hauv chav dub thiab hloov ntawm lawv “ thermal vision ”? Lossis koj puas tau ua si Metroid Prime thiab nco lub qhov cua sov uas lub cim tseem ceeb tau txais? Zoo

ATtiny85 IR USB Txais: 11 Kauj Ruam (nrog Duab)

ATtiny85 IR USB Txais: 11 Kauj Ruam (nrog Duab)

ATtiny85 IR USB Tus Txais: Ceeb Toom, Cov Lus Qhia No YUAV TSUM TAU LOS NTAWM OBSOLETET Lub tsev qiv ntawv v-usb tau tsim los ua haujlwm nrog USB 1.1 raws tu qauv uas tsis muaj nyob niaj hnub no. Nrog tuaj txog ntawm USB3 koj yuav muaj ntau dua li mob taub hau sim ua v-usb cov cuab yeej ua haujlwm. Tom qab hloov kuv

5V Mini Portable Power Supply: 5 Kauj Ruam (nrog Duab)

5V Mini Portable Power Supply: 5 Kauj Ruam (nrog Duab)

5V Cov Khoom Siv Hluav Taws Xob Portable: Peb txhua tus uas tau muaj keeb kwm nrog tinkering thiab hluav taws xob, tau ntsib teeb meem ntau zaus. Qhov teeb meem ntawm kev txhawb nqa 5V cov phiaj xwm! Txij li tsis muaj ib yam xws li 5V roj teeb hauv kev ua lag luam ib txwm muaj thiab txhawb nqa cov haujlwm no siv

Hloov Bluetooth Lub Pob Ntseg/Hais Lus/Adapter Lub Npe lossis Lwm Qhov Chaw Los Ntawm UART: 8 Cov Kauj Ruam (nrog Duab)

Hloov Bluetooth Lub Pob Ntseg/Hais Lus/Adapter Lub Npe lossis Lwm Qhov Chaw Los Ntawm UART: 8 Cov Kauj Ruam (nrog Duab)

Hloov Bluetooth Lub Pob Ntseg/Hais Lus/Adapter Lub Npe lossis Lwm Qhov Chaw Los Ntawm UART: Koj puas muaj cov khub ntawm lub mloog pob ntseg Bluetooth lossis lwm yam khoom siv Bluetooth suab uas muaj lub npe qias neeg tiag tiag thiab txhua lub sijhawm koj ua khub lawv koj muaj lub siab xav hloov lawv npe? Txawm hais tias yog vim li cas tsis zoo ib yam, muaj

AtmoScan: 7 Kauj Ruam (nrog Duab)

AtmoScan: 7 Kauj Ruam (nrog Duab)

AtmoScan: ************************************************** **************************************************** NEWS Mus rau kuv GitHub rau: - Qee qhov kev hloov kho vajtse me me txhim kho kev tsim qauv, suav nrog lub peev xwm los tua nws tus kheej los ntawm software, kho ib qho ntawm b

DIY Xov Tooj Tswj LEGO® Bat Buggy: 5 Kauj Ruam

DIY Xov Tooj Tswj LEGO® Bat Buggy: 5 Kauj Ruam

DIY Xov Tooj Tswj LEGO® Bat Buggy: Nrog qee qhov luam tawm 3D thiab ob peb yam khoom pheej yig, koj tuaj yeem tsim lub tsheb me me, tswj cov tsheb LEGO. Txog qhov haujlwm no kuv yuav siv: ESP32 microcontroller (Adafruit Feather ESP32 lossis TTGO sib npaug ntawm qhov no) 2 x N20 lub cav loj 1

HackerBox 0032: Locksport: 16 Cov Kauj Ruam

HackerBox 0032: Locksport: 16 Cov Kauj Ruam

HackerBox 0032: Locksport: Lub hlis no, HackerBox Hackers tab tom tshawb xyuas lub cev xauv thiab cov ntsiab lus ntawm lub tswb ruaj ntseg. Cov Lus Qhia no muaj cov ntaub ntawv rau ua haujlwm nrog HackerBox #0032, uas koj tuaj yeem khaws tau ntawm no thaum cov khoom siv kawg. Tsis tas li, yog tias koj xav rov

Laser Kos Npe: 6 Cov Kauj Ruam

Laser Kos Npe: 6 Cov Kauj Ruam

Laser Kos Npe: Siv qee lub lasers sau rau ntawm phab ntsa! Koj xav tau: 8 lub teeb ci laser (koj tuaj yeem yuav lawv rau 4 euros ntawm no) .two-coil stepper motorsmall mirrorarduino nano4 zog NPN transistors, 4 lub zog PNP transistors, 8 1k resistors. Txhawb nqa

Qub Teeb / Teeb Roj Teeb Txhuas: 5 Kauj Ruam (nrog Duab)

Qub Teeb / Teeb Roj Teeb Txhuas: 5 Kauj Ruam (nrog Duab)

Qub Teeb / Teeb Roj Teeb Qub qub:-= Lub Tswv Yim = -Tus qub Uniross teeb siv ib leeg Lead-acid 4V roj teeb.Vim li cas thiaj tsis hloov nws nrog Li-Ion roj teeb, nws muaj qhov zoo sib xws. muaj lub peev xwm loj dua.Kev teeb muaj 3 hom: - hloov pauv ntawm - 20 LEDs

Servo Steering Robot Tsheb rau Arduino: 6 Cov Kauj Ruam (nrog Duab)

Servo Steering Robot Tsheb rau Arduino: 6 Cov Kauj Ruam (nrog Duab)

Servo Steering Robot Tsheb rau Arduino: Lub tsheb no yog tsim los ntawm arduino platform tsim, lub hauv paus yog Atmega - 328 p, uas tuaj yeem paub txog lub log pem hauv ntej, lub log tsheb tsav thiab lwm yam haujlwm.Yog koj tsuas yog ua si ib leeg, tsuas yog xav tau siv lub wireless module; Yog tias koj xav siv

IPad Ua Si Timer: 5 Kauj Ruam (nrog Duab)

IPad Ua Si Timer: 5 Kauj Ruam (nrog Duab)

IPad Ua Si Timer: Kuv xav tias qhov no yog lub ncauj lus txhua tus niam txiv tau tawm tsam nrog. Muaj pes tsawg tus menyuam tuaj yeem ua si nrog lawv lub iPads (lossis lwm lub ntsiav tshuaj) .Peb tau sim ntau txoj hauv kev, zoo li lub sijhawm ruaj khov, tab sis qhov ntawd tsis ua haujlwm tiag tiag li peb cov menyuam ib txwm xav rov qab mus tsev

DragonBoard 410c - Yuav Ua Li Cas Ua Haujlwm Tsawg Tsawg Kev nthuav dav: 8 Kauj Ruam

DragonBoard 410c - Yuav Ua Li Cas Ua Haujlwm Tsawg Tsawg Kev nthuav dav: 8 Kauj Ruam

DragonBoard 410c - Yuav Ua Li Cas Ua Kom Tsawg Tsawg Kev nthuav dav: Cov ntawv qhia no yog hais txog Kev Tsawg Tsawg Kev nthuav dav ntawm DragonBoard 410c. Cov tswv yim thiab cov txiaj ntsig (I/O) ntawm Tsawg Tsawg Kev nthuav dav ntawm DragonBoard 410c yog: GPIO (Lub Hom Phiaj Dav Dav Nkag/Tawm Tawm); MPP (Multi Purpose Pin); SPI (Serial Peripheral Interface); I2C (Hauv

Lwm Pi ntawm Phab Ntsa: 16 Cov Kauj Ruam (nrog Duab)

Lwm Pi ntawm Phab Ntsa: 16 Cov Kauj Ruam (nrog Duab)

Lwm Tus Pi ntawm Phab Ntsa: Phau ntawv qhia tsis tau qhia no qhia koj li cas los tsim NAS (Network-Attached Storage) siv Raspberry Pi (RasPi) thiab ob lub HDDs. Phau ntawv qhia no yuav tsum qhia koj cov lus qhia ntxaws ntxaws txog yuav ua li cas txhawm rau nruab RasPi, ob lub HDDs, thiab tag nrho cov khoom siv hluav taws xob

Multi Channel Analyzer MCA Nrog Gamma Spectroscopy NaI (Tl) Ntes: 5 Kauj Ruam

Multi Channel Analyzer MCA Nrog Gamma Spectroscopy NaI (Tl) Ntes: 5 Kauj Ruam

Multi Channel Analyzer MCA Nrog Gamma Spectroscopy NaI (Tl) Ntes: Nyob Zoo, Zoo siab txais tos txhua tus neeg uas nyiam ua haujlwm yam Gamma Spectroscopy. Hauv kab lus luv luv no kuv tsuas yog xav qhia kuv cov txheej txheem ua haujlwm ntawm kev tsim tsev DIY Gamma Spectroscopy ntes nrog MCA. Nws tsis yog phau ntawv qhia, kuv tsuas yog qhia cov duab ntawm tus txheej txheem. Thaum twg

Trackable Electric Longboard: 16 Cov Kauj Ruam (nrog Duab)

Trackable Electric Longboard: 16 Cov Kauj Ruam (nrog Duab)

Trackable Electric Longboard: Txoj haujlwm no suav nrog hluav taws xob ntev uas khaws txoj hauv kev nrog kev pab ntawm raspberry pi. Cov kev sib tham no tau khaws cia hauv mySQL database thiab tau nthuav tawm ntawm kuv lub vev xaib uas tau ua nrog lub microframework 'Flask'. (Nov yog lub tsev kawm ua haujlwm

CrowPi- Coj Koj Mus Los Ntawm Xoom rau Hero Nrog Raspberry Pi: 9 Kauj Ruam

CrowPi- Coj Koj Mus Los Ntawm Xoom rau Hero Nrog Raspberry Pi: 9 Kauj Ruam

CrowPi- Coj Koj Mus Los Ntawm Xoom rau Hero Nrog Raspberry Pi: CrowPi Yog Dab Tsi? CrowPi yog lub rooj tsav xwm txhim kho nruab nrog 7 nti zaub uas tuaj yeem pab koj kawm Raspberry Pi hauv txoj hauv kev yooj yim dua. Nrog CrowPi, tsis tsuas yog koj tuaj yeem kawm paub computer yooj yim tab sis kuj xyaum ua haujlwm thiab ua tiav ntau lub tshuab hluav taws xob

Lub MAC Dub lossis Nqa Lub Neej Tshiab rau Qhov Laus Li Cas: 9 Kauj Ruam (nrog Duab)

Lub MAC Dub lossis Nqa Lub Neej Tshiab rau Qhov Laus Li Cas: 9 Kauj Ruam (nrog Duab)

Lub MAC Dub lossis Nqa Lub Neej Tshiab Mus Rau Cov Ntaub Ntawv Qub.: Ob peb lub hlis dhau los Kuv tau txais cov ntaub ntawv MAC qub. Tsis muaj dab tsi, tsuas yog lub chassis xeb nyob sab hauv. Kuv muab nws tso rau hauv kuv lub rooj cob qhia thiab lub lim tiam dhau los nws rov qab los xav txog. Cov ntaub ntawv tsis zoo, npog nrog nicotine thiab av nrog ntau khawb. Thawj qhov kev pom zoo

DIY ACRYLIC INDIGO BUTTERFLY LAMP: 13 Kauj Ruam (nrog Duab)

DIY ACRYLIC INDIGO BUTTERFLY LAMP: 13 Kauj Ruam (nrog Duab)

DIY ACRYLIC INDIGO BUTTERFLY LAMP.: Indigo Butterflies zoo li txaus ntshai, Tsis yog lawv? Xim, Xim, Txhua qhov txhia chaw. Qee qhov nyob ntawm no, thiab qee qhov nyob ntawd. Lub Teeb Pom Kev Zoo Siab kom Zoo Siab, So, lossis Ua Kom Pom Zoo Hauv Cov Lus Qhia no Kuv yuav qhia koj li cas kuv tsim Acrylic LED Teeb nrog WS2812B chaw nyob

Zaj sawv Blaster: 8 Kauj Ruam (nrog Duab)

Zaj sawv Blaster: 8 Kauj Ruam (nrog Duab)

Zaj sawv Blaster: Zaj sawv BlasterKuv muaj lub tswv yim los ua lub tshuab tuav tes kom 'ntswj' Holi hmoov. Tom qab kev sim me ntsis zaj sawv Blaster tau yug los! Cov cuab yeej muaj 5 lub raj yas nyem lub raj mis uas muaj siphon leeg (raj) ntxiv rau hauv lawv

Kuv Daim iav Ntse: 15 Kauj Ruam (nrog Duab)

Kuv Daim iav Ntse: 15 Kauj Ruam (nrog Duab)

Kuv Daim iav Ntse: Lub sijhawm thaum sawv ntxov tuaj yeem txwv. Koj yuav tsum npaj kom tiav rau kev ua haujlwm, tsev kawm ntawv, … Saib huab cua yuav siv qee lub sijhawm ntawd. Daim iav ntse tshem tawm lub sijhawm koj xav tau qhib koj lub xov tooj lossis khoos phis tawj thiab saib huab cua. Hauv qhov no

Serial Debugging Nrog CloudX: 3 Cov Kauj Ruam

Serial Debugging Nrog CloudX: 3 Cov Kauj Ruam

Serial Debugging Nrog CloudX: Hauv qhov haujlwm no, kuv xav kom piav qhia lub tswv yim ntawm kev debugging ntawm lub davhlau ya nyob twg. Tab sis ua ntej pib, cia piav qhia nws lub tswv yim los ntawm nws lub ntsiab lus. 1. kev sib txuas lus txuas xov tooj cua yog rau kev sib txuas lus ntawm CloudX bo

Ultrasonic Range Finder Tutorial Nrog Arduino & LCD: 5 Kauj Ruam

Ultrasonic Range Finder Tutorial Nrog Arduino & LCD: 5 Kauj Ruam

Ultrasonic Range Finder Tutorial Nrog Arduino & LCD: Coob leej neeg tau tsim Cov Lus Qhia yuav siv Arduino Uno nrog Ultrasonic Sensor thiab, qee zaum, nrog rau lub vijtsam LCD. Kuv ib txwm pom, txawm li cas los xij, cov ntawv qhia no feem ntau hla hla cov kauj ruam uas tsis pom tseeb pib

DIY Telematics Box: 12 Cov Kauj Ruam (nrog Duab)

DIY Telematics Box: 12 Cov Kauj Ruam (nrog Duab)

DIY Telematics Box: Lub thawv Telematics (aka Black Boxes) tau siv los sau thiab sau ntau yam cwj pwm ntawm lub tsheb txav mus los. Lawv tau siv feem ntau hauv dav hlau txhawm rau teev ntau yam cwj pwm ntawm lub dav hlau, piv txwv li, huab cua nrawm, nqe lus, qib roj, tham xov tooj cua thiab

ULTIMATE Gumball Tshuab: 7 Kauj Ruam (nrog Duab)

ULTIMATE Gumball Tshuab: 7 Kauj Ruam (nrog Duab)

ULTIMATE Gumball Machine: Qhov kawg yog dab tsi? Infinite RGB? Yuav ua li cas txog qhov txias LCD touchscreen? Tej zaum txawm tias qee qhov tsis muaj peev xwm ua tiav wifi? Yuav ua li cas txog txhua tus ntawm lawv- hauv lub tshuab gumball. DFRobot ncav tes rau kuv los tsim ib qhov haujlwm uas siv lawv 2.8 " TFT npo

Ua Koj Tus Kheej Lub Pob Ntseg Lub Pob Ntseg Nrog Dawb: 6 Cov Kauj Ruam

Ua Koj Tus Kheej Lub Pob Ntseg Lub Pob Ntseg Nrog Dawb: 6 Cov Kauj Ruam

Ua Koj Tus Kheej Lub Pob Ntseg Lub Pob Ntseg Nrog Dawb: Kuv vam tias koj nyiam lub tswv yim

Tonka Bulldozer Conversion: 5 Kauj Ruam

Tonka Bulldozer Conversion: 5 Kauj Ruam

Tonka Bulldozer Conversion: Nov yog kuv thawj qhov kev sim nrog lub tsheb nrau av Txhua txhua txij thaum kuv tseem yog menyuam yaus kuv nyiam rc cov tsheb thauj khoom thiab cov tsheb thauj khoom tonka. Tam sim no kuv laus dua qhov kev hlub yeej tsis tuag. Teeb meem yog kuv muaj ob tus menyuam thiab ntau yam nuj nqis, Kuv xav coj ob peb tus poj niam thiab yuav qhov zoo nkauj txhua yam tau ntsib

Lom Zem Heev Thiab Me Me Neeg Hlau (meshmesh): 7 Kauj Ruam

Lom Zem Heev Thiab Me Me Neeg Hlau (meshmesh): 7 Kauj Ruam

Lom zem heev thiab Neeg Hlau Me Me (meshmesh): qhov no yog qhov project lom zem

Yuav Ua Li Cas Thiaj Li Nrhiav Cov Tshuaj Ammonia: 8 Kauj Ruam

Yuav Ua Li Cas Thiaj Li Nrhiav Cov Tshuaj Ammonia: 8 Kauj Ruam

Yuav Ua Li Cas Ua Cov Khoom Siv Tshuaj Ammonia: Hauv qhov kev qhia no peb yuav qhia koj li cas siv cov tshuaj ammonia, arduino thiab raspberry txhawm rau ntsuas cov tshuaj ammonia thiab muab kev ceeb toom yog tias muaj qhov xau lossis siab dhau hauv huab cua! peb lub tsev kawm ntawv txoj haujlwm, qhov tseeb t

AT Me Me Microcontroller Nrog LEDS thiab RGB: 4 Cov Kauj Ruam

AT Me Me Microcontroller Nrog LEDS thiab RGB: 4 Cov Kauj Ruam

AT Tiny Microcontroller Nrog LEDS thiab RGB: Lub Circuit Court siv AT TINY microcontroller. Arduino muab 5 qhov hluav taws xob qhov hluav taws xob.Lub resistors txwv qhov cur

Txoj Kev Yooj Yim Tshaj Plaws Tshaj Plaws rau Microcontroller!: 9 Kauj Ruam

Txoj Kev Yooj Yim Tshaj Plaws Tshaj Plaws rau Microcontroller!: 9 Kauj Ruam

Txoj Kev Yooj Yim Tshaj Plaws rau Txoj Haujlwm Microcontroller!: Koj puas txaus siab hauv kev muaj lub microcontroller uas siv lub zog tsawg dua? Hnub no, Kuv yuav qhia koj paub txog STM32 Ultra Low Power - L476RG, uas siv 4 lub zog tsawg dua li Arduino Mega thiab muaj lub zog ua haujlwm Cortex. Kuv tseem yuav

Lub Xov Tooj Ntsej Muag Lub Ntsej Muag Nrog Tus Nqi: 4 Kauj Ruam

Lub Xov Tooj Ntsej Muag Lub Ntsej Muag Nrog Tus Nqi: 4 Kauj Ruam

Smart Phone Wrist Mount With Charger: Ib lub dab teg yooj yim, uas tuaj yeem txuag tau lub xov tooj ntse thiab them nws nrog lub txhab nyiaj hluav taws xob.Lub caij no, muaj cov ntse ntse txias heev, tab sis lawv tseem muaj qhov txwv kev ua haujlwm thiab sau cov ntawv txuas los ntawm cov yeeb yaj kiab qub ntsia zoo li qhov no

Keypad Nrog LCD Siv CloudX Microcontroller: 4 Kauj Ruam

Keypad Nrog LCD Siv CloudX Microcontroller: 4 Kauj Ruam

Keypad Nrog LCD Siv CloudX Microcontroller: Rau txoj haujlwm no, peb yuav lees txais cov ntaub ntawv los ntawm Matrix Keypad thiab tom qab ntawd tso tawm ntawm LCDModule