Kov Screen Daim Npav Ua Lag Luam: 8 Kauj Ruam (nrog Duab)

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:26

Kuv yog Tus Kws Tsim Kho Hluav Taws Xob los ntawm kev kawm tiav, tab sis kuv kuj tau tsim cov txuj ci hauv Hluav Taws Xob Engineering thiab cov phiaj xwm los ntawm ntau xyoo ntawm cov phiaj xwm cuam tshuam nrog kev siv hluav taws xob thiab microcontrollers. Txij li cov tswv ntiav haujlwm yuav cia siab tias kuv muaj txuj ci hauv Mechanical Engineering vim kuv kawm tiav, Kuv txiav txim siab ua daim npav lag luam uas yuav nthuav tawm kuv li EE thiab kev txawj ua haujlwm. Kuv txiav txim siab ntau qhov kev xaiv, los ntawm kev tsim-tsim PCB nrog kuv lub npe thiab cov ntaub ntawv tiv toj ntawm nws thiab ob peb cov lus siv muaj txiaj ntsig, mus rau PCB nrog qhov ntawd thiab me ntsis LED teeb nyem Circuit Court rau nws, tab sis thaum kawg kuv mus nrog qhov ua tau zoo tshaj plaws kev xaiv kuv tau txiav txim siab, uas yog daim npav ua lag luam nrog Arduino thiab kov lub vijtsam ntawm nws uas yuav cia ib tus neeg nqes los ntawm ntau yam ntaub ntawv hais txog kuv. Nws yog qhov lees paub zoo heev thiab raug nqi rau daim npav lag luam, tab sis ntawm qhov tsim tau kuv xav tias yog yooj yim tshaj plaws thiab tseem yog qhov lom zem tshaj plaws los tsim thiab ua.

Kauj Ruam 1: Cov Khoom thiab Cov Khoom Siv Yuav Tsum Tau

Cheebtsam:

MicroSD daim npav (xaiv tau, kuv thauj kuv daim ntawv rov pib dua thiab cov ntaub ntawv sau rau hauv daim npav MicroSD tso rau hauv lub vijtsam LCD)

Cov neeg nqa khoom tshwj xeeb

Header tus pin

Adafruit Touch Screen (P/N 2478)

Adafruit Pro Trinket 3.3V (P/N 2010)

Adafruit Push Button Power Control Board (P/N 1400)

Adafruit Li-Ion/Li-Poly Backpack Board (P/N 2124)

Adafruit 150 mAh LiPo roj teeb (P/N 1317)

Adafruit Momentary Push Button (P/N 3105)

2X Resistor 1.2K Ohm SMT 0805

1X Resistor 220 Ohm SMT 0805

Cov Ntaub Ntawv/Cov Cuab Yeej:

Kab pheeb ces kaum flush cutters

Cov hlua hlau

MicroUSB cable

99% isopropyl cawv

Silicone conformal txheej

Muab tshuaj txhuam

Txhuam

Chaw ua haujlwm cua kub rov ua haujlwm

Soldering hlau

Kauj Ruam 2: Tus Thawj Coj PCB Tsim thiab Tsim

Lub rooj tsav nkoj tau tsim hauv AutoDesk EAGLE thiab tsim los ntawm OSHPark. Hmoov tsis zoo kuv ua tsis tau daim phiaj xwm txheej nrog rau PCB tsim, yog li kuv tau txuas cov ntaub ntawv.brd los ntawm EAGLE yog li pawg thawj coj tuaj yeem yooj yim nkag mus rau hauv EAGLE thiab kho thiab/lossis tsim khoom.

Kauj Ruam 3: Kev Txiav Txim Siab

Vim tias qee yam khoom txwv tsis pub nkag mus rau lwm thaj chaw ntawm daim npav ib zaug teeb tsa, Kuv ua raws qhov kev txiav txim tshwj xeeb ntawm kev tsim kho:

1. Solder nto mount resistors.

2. Solder Adafruit PCBs.

3. Lub zog khawm khawm.

4. Solder LCD screen header pins to carrier board (tsis txhob solder screen rau header pins tsis tau).

5. Soak PCB hauv 99% isopropyl cawv thiab txhuam tawm ntawm cov dej ntws. Tso cai rau PCB kom qhuav tag ua ntej txuas ntxiv mus.

6. Kua nplaum thiab txuas roj teeb Li-Ion.

7. Xim silicone ua raws txheej txheej ob sab ntawm PCB.

8. Solder LCD screen mus rau tus pin header. Tshem cov dej ntws tawm ntawm cov pob qij txha tshiab no siv cov paj rwb so hauv 99% isopropyl cawv.

9. Xim silicone ua raws txheej txheej ntawm lub vijtsam LCD cov khoom sib txuas thiab ua raws cov npoo ntawm LCD npo PCB.

10. Them thiab ua daim npav.

Kauj Ruam 4: Soldering Surface Mount Resistors

Daim npav siv 2X 1.2KOhm 0805 SMT resistors (RB1 thiab RB2) txuas raws li qhov sib faib hluav taws xob kom Arduino tuaj yeem ntsuas lub roj teeb qhov hluav taws xob thiab 1X 220 Ohm tam sim no txwv kev tiv thaiv (RLED) rau xiav LED hauv lub zog khawm. Kuv tau siv lawv siv cov tshuaj txhuam txhuam uas siv rau cov ntaub qhwv thiab lub tshuab cua sov ua haujlwm rov ua dua, tab sis nws kuj tseem tuaj yeem ua rau lawv siv cov hlau txuas thiab cov txheej txheem txheem.

Kauj Ruam 5: Soldering Adafruit PCBs rau Carrier Board

Kuv xav kom daim npav kom tiav raws li qhov saib thiab hnov zoo li ua tau, yog li kuv tau sim tshem tawm cov ntsiab lus ntse lossis cov npoo hauv qhov tsim kawg. Txhawm rau koom nrog Adafruit PCBs rau pawg thawj coj saib xyuas kuv tau siv cov txheej txheem uas kuv hu "solder riveting" ntau dua li ib txwm siv lub taub hau. Txhawm rau koom nrog PCBs ua ke, Kuv tso rau sab ntawm Adafruit PCB yam tsis muaj cov khoom ntws tawm tsam lub rooj tsav nkoj thiab tuav nws ua ke siv lub taub hau ntsaws ib ntus los ntawm qee qhov dhau los. Qee qhov vias tau raug tshem tawm ntawm cov header pins kom lawv tuaj yeem muag tau ua ke. Los ntawm kev ua kom sov dhau ntawm ib qho ntawm PCBs nrog cov hlau txuas thiab thov siv tshuaj txhuam kom txog thaum nws ntws los ntawm ob qho PCBs, cov laug cam tau koom nrog ob lub cev thiab hluav taws xob, tsis muaj tus pin ntse tawm ntawm ob sab.

Kauj Ruam 6: Cov Khoom Siv Los Ntawm Qhov Hau

Kuv siv kab txaij lauj kaub hlais kom txiav ib qho los ntawm qhov sib txuas pins yaug ua ntej cov laug kom cov laug sib koom ua ke kom ua tau ib lub pob zeb du dua li cov tsoos spiky "volcano."

Kauj Ruam 7: Tshem Tawm Flux thiab Siv Cov Tshuaj Txhim Kho Silicone

Txhawm rau tshem tawm cov dej ntws tawm, kuv tau ntub lub rooj tsavxwm hauv 99% isopropyl cawv tom qab txhua qhov khoom siv tsis yog ntawm lub vijtsam thiab Li-Ion roj teeb tau raug muab muag, tom qab ntawd siv txhuam los ntxuav tawm cov dej ntws tawm. Tom qab ntawd kuv tau pleev xim ib txheej silicone ua raws txheej txheem ntawm lub rooj tsavxwm. Qhov no tsis tsim nyog nruj me ntsis, tab sis kuv xav tias nws muab daim npav txhim kho kom zoo thiab ua tiav thiab muab nws nrog qee qhov kev tiv thaiv los ntawm dej thiab hluav taws xob luv. Lub rooj tsav xwm thauj khoom yuav tsum tau txheej ua ntej lub vijtsam raug muab tso rau vim tias tsis muaj txoj hauv kev nkag mus rau lub rooj tsavxwm thaum lub vijtsam tau raug muab muag.

Kauj Ruam 8: Kev Tsim Qauv / UI

Lub interface yog hais txog qhov yooj yim ntawm lub vijtsam kov interface raws li nws muaj peev xwm ua tau, tab sis nws qhia tau tias kuv muaj tsawg kawg ntawm kev paub me ntsis. Lub vijtsam qhia pom tshwm thaum lub kaw lus ua tiav kev thauj khoom, thiab ua rau lub vijtsam nrog 5 qhov kev xaiv xaiv. Lawv coj mus rau cov ntxaij vab tshaus nrog ntau yam khoom ntawm cov ntaub ntawv cuam tshuam txog kuv, nrog rau lub vijtsam nrog cov ntaub ntawv txheej txheem uas tham txog qhov twg kuv tau txais ntau yam khoom siv, muaj cov duab qhia pom tias lub zog tseem tshuav ntau npaum li cas, thiab taw tes tawm lub chaw nres nkoj them nyiaj thiab MicroSD daim npav qhov. Txij li thaum kuv tsis tas yuav siv ib qho ntawm lub vijtsam LCD lub luag haujlwm uas xav tau daim npav teeb tsa hauv nws daim npav MicroSD daim npav, kuv tso kuv daim ntawv rov pib dua thiab cov ntaub ntawv sau cia ntawm daim npav MicroSD hauv qhov yog li kuv cov ntaub ntawv muaj nyob hauv daim npav lag luam.