715 Datasheet by Adafruit Industries LLC

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I2C Controlled + Keypad Shield Kit for
16x2 LCD
PRODUCTID:715
Description
ThisnewAdafruitshieldmakesiteasytousea16x2CharacterLCD.The16x2CharacterLCDis
NOT,repeat,NOT,included
WereallyliketherangeofLCDswestockintheshop,suchasourclassicblue&whiteaswellas
thefancyRGBnegativeandRGBpositive.Unfortunately,theseLCDsdorequirequiteafew
digitalpins,6tocontroltheLCDandthenperhapsanother3tocontroltheRGBbacklightfora
totalof9pins.That'shalfofthepinsavailableonaclassicArduino!
Withthisinmind,wewantedtomakeiteasierforpeopletogettheseLCDintotheirprojects
sowedevisedashieldthatletsyoucontrola16x2CharacterLCD,upto3backlightpinsAND5
keypadpinsusingonlythetwoI2CpinsontheArduino!Thebestpartisyoudon'treallylose
thosetwopinseither,sinceyoucansticki2cbasedsensors,RTCs,etcandhavethemsharethe
I2Cbus.Thisisasuperslickwaytoaddadisplaywithoutallthewiringhassle.
Thisshieldisperfectforwhenyouwanttobuildastandaloneprojectwithitsownuser
interface.The4directionalbuttonsplusselectbuttonallowsbasiccontrolwithouthavingto
attachabulkycomputer.
Theshieldisdesignedfor'classic'ArduinossuchastheUno,Duemilanove,Diecimilla,etc.It
willalsoworkperfectlywithArduinoMegaR3's.EarlierMega'shavetheI2Cpinsinadifferent
locationandwillrequireyoutosoldertwowiresfromtheI2Cpinsontheshieldandplugthem
intothedifferentI2ClocationsatDigital20&21.Thisshieldwillnotfiteasilyontopofan
ArduinoEthernetbecauseoftheEthernetjackheight.Youcanuseasetofstackingheadersto
givetheshieldmore'lift'abovethejack.
Thisshieldcomesasakit!Includedisahighquality,USAmadePCBandallthecomponents
(buttons,headeretc).AnLCDisnotincluded,youwillneedtoorderoneofourfine16x2
CharacterLCDs‐justpickupwhicheverstyleyoulikethemost(blue&white,RGBnegativeor
RGBpositive).
ThiskithasonlybeentestedwiththeLCDswesellandsupport,ifyouuseanotherwewillnot
beabletoguaranteeitworksandwewillnotbeabletotroubleshotorsupportit!
Assemblyiseasy,evenifyou'veneversolderedbeforeandthekitcanbecompletedin30
minutes.Checktheproducttutorialpageforassemblyinstructionsbeforepurchasing
Ifyoudon'talreadyhaveanLCDwesuggestpickingupa'pack'whichincludestheLCDandwill
saveyouabundle:RGBPositivePack,RGBNegativePackandBasicBlue&WhitePack.
Ofcourse,weevenwroteaneasytouseArduinolibrarythatyoucaneasilyaddtoyour
project.ItactsjustlikethebuiltinLiquidCrystallibrary,butautomaticallyusestheshieldpins.
Youcanalsoeasilyquerythe5keypadbuttonstogetinputthroughthelibrary,soyouget
extrabuttonswithoutusinganymorepins.
Atthistime,thelibraryandshieldcancontroltheRGBbacklightofourcharacterLCDsby
turningeachLEDonoroff.Thismeansyoucandisplaythefollowingcolors:Red,Yellow,Green,
Teal,Blue,Violet,Whiteandalloff.ThereisnosupportforPWMcontrolofthebacklightatthis
time,soifyouneedtohavemoregranularcontroloftheRGBbacklighttodisplayalarger
rangeofcolors,thisshieldcan'tdothat(theI2CexpanderdoesnothavePWMoutput).
Productpagewithtutorials,documentationandassemblyinformation
https://cdnlearn.adafruit.com/downloads/pdf/rgblcdshield.pdf
Technical Details
o EagleCADPCBfilesandFritzingavailableintheproducttutorial
https://cdnlearn.adafruit.com/downloads/pdf/rgblcdshield.pdf
o Dimensions:2.1"x3.2"
o Forusewith16x2Characterdisplays
o PlugandplaywithanyArduino'classic'‐UNO,duemilanove,diecimilla,etcaswellas
ArduinoMegaR3.
o UsesonlytheI2Cpins‐Analog4&5onclassicArduinos,Digital20and21onArduino
MegaR3
o Thisboard/chipusesI2C7bitaddress0x20
https://www.adafruit.com/product/71572517

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