[{"data":1,"prerenderedAt":1701},["ShallowReactive",2],{"tutorial:\u002Flearn\u002Fmicrobit\u002Fmakecode\u002Fmicrofit":3,"tutorial-steps:\u002Flearn\u002Fmicrobit\u002Fmakecode\u002Fmicrofit":524,"kit-\u002Flearn\u002Fmicrobit\u002Fmakecode\u002Fmicrofit":857,"key-words-glossary":1190,"glossary":1532},{"id":4,"title":5,"body":6,"description":502,"draft":505,"duration":506,"extension":507,"image":508,"kit":509,"language":513,"level":514,"meta":515,"navigation":516,"path":517,"pdf":518,"platform":519,"seo":520,"stem":521,"youtube":522,"__hash__":523},"tutorials\u002Flearn\u002Fmicrobit\u002Fmakecode\u002Fmicrofit\u002Findex.md","MicroFit: Your very own Step Counter",{"type":7,"value":8,"toc":501},"minimark",[9],[10,11,12,65,71,78,147,187,227,273,301,363,388,409],"tutorial-steps",{},[13,14,16,26,38,41],"step",{"title":15},"Overview",[17,18,19,20,25],"p",{},"Ever wondered how a smartwatch or fitness band counts your steps? In this project, you're going to build your very own step counter using a ",[21,22,24],"g",{"slug":23},"micro-bit","micro:bit","!",[17,27,28,29,32,33,37],{},"Inside your micro:bit is a clever little sensor called an ",[21,30,31],{"slug":31},"accelerometer",". It can feel when the micro:bit moves. We'll use it to spot every step you take, add them up, and show the total on the ",[21,34,36],{"slug":35},"led-matrix","LED matrix"," (the grid of lights on the front).",[17,39,40],{},"The best bit? When you're done, you'll have a real working fitness tracker you can pop on and take outside. Don't worry if something doesn't work first time, that's all part of coding. Let's give it a go!",[42,43,46,52],"callout",{"color":44,"icon":45},"green","🎯",[17,47,48],{},[49,50,51],"strong",{},"What you'll learn",[53,54,55,59,62],"ul",{},[56,57,58],"li",{},"How a light sensor measures the light around it",[56,60,61],{},"How to use an if\u002Felse block to make a decision",[56,63,64],{},"How to switch an RGB LED on and off automatically",[13,66,68],{"title":67},"What you'll need",[69,70],"what-youll-need",{},[13,72,74],{"title":73},"Key words",[75,76],"key-words",{"terms":77},"variable,accelerometer,led-matrix,forever-loop,button",[13,79,81,86,113,120,124],{"title":80},"Navigating to the MakeCode Editor",[82,83,85],"h3",{"id":84},"on-a-computer","On a Computer",[87,88,89,92,103],"ol",{},[56,90,91],{},"Open your favourite web browser. We recommend either Google Chrome or Microsoft Edge.",[56,93,94,95,102],{},"In the Address bar type ",[96,97,101],"a",{"href":98,"rel":99},"https:\u002F\u002Fmakecode.microbit.org\u002F#",[100],"nofollow","makecode.microbit.org",".",[56,104,105,106,109,110,102],{},"Select ",[49,107,108],{},"New Project"," and give it the name ",[49,111,112],{},"MicroFit",[17,114,115],{},[116,117],"img",{"alt":118,"src":119},"The MakeCode code area","\u002Flearn\u002Fmicrobit\u002Fmakecode\u002Fmicrofit\u002FCodeArea.webp",[82,121,123],{"id":122},"on-a-tablet-or-phone","On a Tablet or Phone",[87,125,126,135,140],{},[56,127,128,129,132,133,102],{},"Open the ",[49,130,131],{},"micro:bit app",". If you don't have the app yet you can download it from your devices app store by searching for ",[49,134,24],{},[56,136,105,137,102],{},[49,138,139],{},"Create Code",[56,141,105,142,144,145,102],{},[49,143,108],{}," and name it ",[49,146,112],{},[13,148,150,181],{"title":149},"Set up the Code Area",[87,151,152,164,174],{},[56,153,154,155,159,160,163],{},"Select the ",[156,157,158],"code",{},"on start"," block and drop it on the ",[49,161,162],{},"bin"," icon to delete it.",[56,165,105,166,169,170,173],{},[49,167,168],{},"Input",". Select a ",[156,171,172],{},"on shake"," block and drop it within the code area.",[56,175,105,176,169,178,173],{},[49,177,168],{},[156,179,180],{},"on button A pressed",[17,182,183],{},[116,184],{"alt":185,"src":186},"Setting up the code area","\u002Flearn\u002Fmicrobit\u002Fmakecode\u002Fmicrofit\u002FS1_SettingUpCodeArea.webp",[13,188,190,215,221],{"title":189},"Change Steps by 1",[87,191,192,205],{},[56,193,105,194,197,198,201,202,102],{},[49,195,196],{},"Variables",", choose ",[49,199,200],{},"Make a Variable",", and name it ",[49,203,204],{},"steps",[56,206,207,208,211,212,214],{},"Snap a ",[156,209,210],{},"change steps by 1"," block inside the ",[156,213,172],{}," block.",[17,216,217,218,102],{},"Every time the micro:bit detects a shake, it adds one to your steps ",[21,219,220],{"slug":220},"variable",[17,222,223],{},[116,224],{"alt":225,"src":226},"Adding change steps by 1","\u002Flearn\u002Fmicrobit\u002Fmakecode\u002Fmicrofit\u002FS2_ChangeStepsBy.webp",[13,228,230,257,267],{"title":229},"Show the number of steps",[87,231,232,244],{},[56,233,105,234,237,238,211,241,214],{},[49,235,236],{},"Basic",", then snap a ",[156,239,240],{},"show number",[156,242,243],{},"forever",[56,245,105,246,237,248,250,251,253,254,102],{},[49,247,196],{},[156,249,204],{}," block onto the ",[156,252,240],{}," block, where it says ",[49,255,256],{},"0",[17,258,259,260,264,265],{},"This ",[21,261,263],{"slug":262},"forever-loop","forever loop"," keeps running and shows your step count on the ",[21,266,36],{"slug":35},[17,268,269],{},[116,270],{"alt":271,"src":272},"Showing the number of steps","\u002Flearn\u002Fmicrobit\u002Fmakecode\u002Fmicrofit\u002FS3_ShowNumberOfSteps.webp",[13,274,276,285,295],{"title":275},"Reset the steps to zero",[17,277,105,278,237,280,211,283,214],{},[49,279,196],{},[156,281,282],{},"set steps to 0",[156,284,180],{},[17,286,287,288,291,292,294],{},"Now, pressing ",[21,289,290],{"slug":290},"button"," A on the micro:bit resets your step ",[21,293,220],{"slug":220}," back to zero.",[17,296,297],{},[116,298],{"alt":299,"src":300},"Setting steps to zero","\u002Flearn\u002Fmicrobit\u002Fmakecode\u002Fmicrofit\u002FS4_SetStepsToZero.webp",[13,302,304,308,341,347,351,360],{"title":303},"Downloading Your Code",[82,305,307],{"id":306},"using-a-computer","Using a Computer",[87,309,310,319,324,327,337],{},[56,311,154,312,315,316,102],{},[49,313,314],{},"three dots"," next to ",[49,317,318],{},"Download",[56,320,105,321,102],{},[49,322,323],{},"Connect Device",[56,325,326],{},"A pop-up will show you how to connect the micro:bit to the computer. Keep following the on-screen instructions.",[56,328,105,329,332,333,336],{},[49,330,331],{},"BBC micro:bit XXX"," and select ",[49,334,335],{},"Connect",". The XXX is your own micro:bit's name, so don't worry if it looks a little different.",[56,338,105,339,102],{},[49,340,318],{},[17,342,343],{},[116,344],{"alt":345,"src":346},"Downloading your code","\u002Flearn\u002Fmicrobit\u002Fmakecode\u002Fmicrofit\u002FDownloadingCode.webp",[82,348,350],{"id":349},"using-a-tablet-or-phone","Using a tablet or phone",[87,352,353,357],{},[56,354,105,355,102],{},[49,356,318],{},[56,358,359],{},"Follow the on-screen instructions to pair the micro:bit with the micro:bit app.",[17,361,362],{},"Once you've finished the on-screen steps, your code downloads to your micro:bit.",[13,364,366,369,382],{"title":365},"Run it and Watch",[17,367,368],{},"Shake the micro:bit to watch your steps go up. Pop a battery pack on, attach the micro:bit to your wrist or ankle, and head outside to see how many steps you can rack up!",[17,370,371,374,375,315,378,381],{},[49,372,373],{},"Dont Have a microbit"," We can test it on the MakeCode editor by selecting the ",[49,376,377],{},"white dot",[49,379,380],{},"shake"," on the micro:bit simulator and watch our steps counter climb everytime we select the dot.",[17,383,384],{},[116,385],{"alt":386,"src":387},"Shake button on the micro:bit Simulator","\u002Flearn\u002Fmicrobit\u002Fmakecode\u002Fmicrofit\u002FSimDemo.webp",[13,389,391],{"title":390},"Try it yourself",[392,393,394],"try-it",{},[17,395,396,399,400,211,403,405,406,408],{},[49,397,398],{},"Challenge:"," Set yourself a step goal! Add an ",[156,401,402],{},"if",[156,404,243],{}," loop to check when ",[156,407,204],{}," reaches a target, like 20. When you hit it, make the micro:bit show a happy face or play a sound to celebrate, then press button A to reset and go again.",[13,410,412],{"title":411},"Stuck? Quick fixes",[413,414,415,428],"table",{},[416,417,418],"thead",{},[419,420,421,425],"tr",{},[422,423,424],"th",{},"Problem",[422,426,427],{},"Try this",[429,430,431,446,454,473,481,493],"tbody",{},[419,432,433,437],{},[434,435,436],"td",{},"The number doesn't go up when I shake it",[434,438,439,440,442,443,445],{},"Check your ",[156,441,210],{}," block is inside the ",[156,444,172],{}," block. Give the micro:bit one firm, clear shake.",[419,447,448,451],{},[434,449,450],{},"The count jumps up by lots at once",[434,452,453],{},"A big wobble can look like several shakes. Try one single, definite shake each time.",[419,455,456,459],{},[434,457,458],{},"Nothing shows on the LED matrix",[434,460,461,462,464,465,467,468,470,471,214],{},"Make sure the ",[156,463,204],{}," variable is snapped inside the ",[156,466,240],{}," block, and that ",[156,469,240],{}," is inside the ",[156,472,243],{},[419,474,475,478],{},[434,476,477],{},"The number doesn't change straight away when I shake fast",[434,479,480],{},"That's okay, it's still counting! The micro:bit can't show the new number while the last one is still scrolling. Stop shaking for a moment and your latest total will pop up.",[419,482,483,486],{},[434,484,485],{},"Button A won't reset the steps",[434,487,488,489,442,491,214],{},"Check the ",[156,490,282],{},[156,492,180],{},[419,494,495,498],{},[434,496,497],{},"My code won't download to the micro:bit",[434,499,500],{},"Use a data USB cable (not a charge-only one), make sure the micro:bit is paired, and try a different USB port.",{"title":502,"searchDepth":503,"depth":503,"links":504},"",2,[],false,"10 mins","md","\u002Flearn\u002Fmicrobit\u002Fmakecode\u002Fmicrofit\u002Fmicrofit-cover.png",[510,24,511,512],"The micro:bit MakeCode editor","micro USB cable","battery pack for the micro:bit 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accelerometer is a tiny part inside the micro:bit that senses movement, like tilting, shaking or being turned over. It turns that movement into numbers your code can react to.","A bit like the sensor in a games controller that knows when you tilt it to steer, the accelerometer notices when the micro:bit moves.",{"body":1197},{"type":7,"value":1198,"toc":1199},[],{"title":502,"searchDepth":503,"depth":503,"links":1200},[],"glossary\u002Faccelerometer","Accelerometer","ksJj58OEPP72c3cASeHPlPiw73FfxxUbtIkoEIYW2Rc",{"id":1205,"category":1193,"definition":1206,"example":1207,"extension":507,"meta":1208,"stem":1213,"term":1214,"__hash__":1215},"glossary\u002Fglossary\u002Fbutton.md","A button is a switch you press to tell your project to do something. The code can check whether it's being pressed or not.","Pressing a doorbell is just like pressing a button, one press sends a signal that makes something happen.",{"body":1209},{"type":7,"value":1210,"toc":1211},[],{"title":502,"searchDepth":503,"depth":503,"links":1212},[],"glossary\u002Fbutton","Button","PgfcNSpG1mpSW_fVJZZMkF4D6eYiQLiyKWeq6_CXsMA",{"id":1217,"category":1193,"definition":1218,"example":1219,"extension":507,"meta":1220,"stem":1225,"term":1226,"__hash__":1227},"glossary\u002Fglossary\u002Fbuzzer.md","A buzzer is a tiny speaker that makes beeps and tones when you send it electricity. By telling it different numbers, you can make it play notes and tunes.","The beep a microwave makes when your food is ready comes from a buzzer.",{"body":1221},{"type":7,"value":1222,"toc":1223},[],{"title":502,"searchDepth":503,"depth":503,"links":1224},[],"glossary\u002Fbuzzer","Buzzer","L0-h_InzgZ_gB0Iy3IE-ojdFF0cXjdB2AxJY0QU0VpU",{"id":1229,"category":1230,"definition":1231,"example":1232,"extension":507,"meta":1233,"stem":1238,"term":1239,"__hash__":1240},"glossary\u002Fglossary\u002Fforever-loop.md","Programming","A forever loop repeats its instructions again and again without ever stopping (until you switch off or reset). It's perfect for anything you want to keep happening over and over.","Like a clock's second hand that keeps ticking round and round, a forever loop keeps running the same steps over and over.",{"body":1234},{"type":7,"value":1235,"toc":1236},[],{"title":502,"searchDepth":503,"depth":503,"links":1237},[],"glossary\u002Fforever-loop","Forever loop","1j2cYaiR3yKeoh54w9Vg2aWr_cEXEtj7F0WCR3_jdc0",{"id":1242,"category":1243,"definition":1244,"example":1245,"extension":507,"meta":1246,"stem":1251,"term":1252,"__hash__":1253},"glossary\u002Fglossary\u002Ffrequency.md","Electronics","A frequency is just a number that tells a buzzer which note to play. A small number makes a low sound, and a big number makes a high sound.","Setting a buzzer to a low number gives a deep, rumbly note, while a high number makes a squeaky, high-pitched one, a bit like the left and right ends of a piano.",{"body":1247},{"type":7,"value":1248,"toc":1249},[],{"title":502,"searchDepth":503,"depth":503,"links":1250},[],"glossary\u002Ffrequency","Frequency","XY4AeY0bsJaqF0XBjkEAvTSzqxdpPPLt09Z_LbZSjPg",{"id":1255,"category":1230,"definition":1256,"example":1257,"extension":507,"meta":1258,"stem":1263,"term":1264,"__hash__":1265},"glossary\u002Fglossary\u002Ffunction.md","A function is a chunk of code you give a name to, so you can use it again and again without building it from scratch each time. Think of it like a favourite recipe, you write down the steps once, then follow it whenever you need it.","Like writing out a pancake recipe once. Whenever you fancy pancakes, you just follow the recipe again rather than working it all out from scratch.",{"body":1259},{"type":7,"value":1260,"toc":1261},[],{"title":502,"searchDepth":503,"depth":503,"links":1262},[],"glossary\u002Ffunction","Function","0aEVvGRMWsAC1qXngj6QCHxCoIn1mWfHYBBi95ayuLE",{"id":1267,"category":1268,"definition":1269,"example":1270,"extension":507,"meta":1271,"stem":1276,"term":1277,"__hash__":1278},"glossary\u002Fglossary\u002Fide-code-editor.md","General","An IDE is the program where you write and run your code. A code editor lots of children and parents will already know is Scratch, where you drag blocks together to build a program. IDE stands for \"integrated development environment\".","It's like a kitchen for code: one place with all the tools you need to put your project together and test it.",{"body":1272},{"type":7,"value":1273,"toc":1274},[],{"title":502,"searchDepth":503,"depth":503,"links":1275},[],"glossary\u002Fide-code-editor","IDE (code editor)","yc7Eds8WdmrIM56FGlCmMtjhoodKwT1IUvQCC9bsvKs",{"id":1280,"category":1281,"definition":1282,"example":1283,"extension":507,"meta":1284,"stem":1289,"term":1290,"__hash__":1291},"glossary\u002Fglossary\u002Fif-statement.md","Logic","An if statement checks whether something is true, and only runs its instructions when it is. It's how code makes decisions.","\"If it's cold, put on a coat.\" If it's warm, you skip the coat, the action only happens when the check is true.",{"body":1285},{"type":7,"value":1286,"toc":1287},[],{"title":502,"searchDepth":503,"depth":503,"links":1288},[],"glossary\u002Fif-statement","If statement","3uYmpX5sGUnkc327qCP_EkL6IGkFiginfOP39Kstry8",{"id":1293,"category":1294,"definition":1295,"example":1296,"extension":507,"meta":1297,"stem":1302,"term":1303,"__hash__":1304},"glossary\u002Fglossary\u002Finteger.md","Data & Variables","An integer is just a whole number, like 1, 2 or 3. It has no bits after a dot, so 4 is an integer, but 4.5 isn't.","Counting down 3… 2… 1… uses integers, but a price like £4.99 isn't an integer because it has numbers after the dot.",{"body":1298},{"type":7,"value":1299,"toc":1300},[],{"title":502,"searchDepth":503,"depth":503,"links":1301},[],"glossary\u002Finteger","Integer","lktbVeg3VEBLF2Jg3R_EKdjEowVZeabE1gPnGpI2OXY",{"id":1306,"category":1193,"definition":1307,"example":1308,"extension":507,"meta":1309,"stem":1314,"term":1315,"__hash__":1316},"glossary\u002Fglossary\u002Fled.md","An LED is a tiny light you can switch on and off (and sometimes change colour) with your code. LED is short for \"light-emitting diode\".","The little standby light on a TV is an LED, your code can flash one on and off the same way.",{"body":1310},{"type":7,"value":1311,"toc":1312},[],{"title":502,"searchDepth":503,"depth":503,"links":1313},[],"glossary\u002Fled","LED","M41j-xq46HhMvOjtpYSjfy0ypnoMYVzgeqVGSuyVciY",{"id":1318,"category":1193,"definition":1319,"example":1320,"extension":507,"meta":1321,"stem":1326,"term":1327,"__hash__":1328},"glossary\u002Fglossary\u002Fled-matrix.md","The LED matrix is the grid of little red lights on the front of the micro:bit. By switching them on and off in patterns, your code can show numbers, letters and tiny pictures.","Like a mini scoreboard made of dots, the LED matrix lights up to spell out your step count.",{"body":1322},{"type":7,"value":1323,"toc":1324},[],{"title":502,"searchDepth":503,"depth":503,"links":1325},[],"glossary\u002Fled-matrix","LED Matrix","KfPJAm7v5EXlm2ejZZLldfB4w7zOMZQhbrmsqxpqJi8",{"id":1330,"category":1193,"definition":1331,"example":1332,"extension":507,"meta":1333,"stem":1338,"term":1339,"__hash__":1340},"glossary\u002Fglossary\u002Flight-sensor.md","A light sensor is a little part that measures how bright or dark it is around it, then turns that into a number your code can read. As the light changes, so does the number.","Like the automatic headlights on a car that switch on when it gets dark, a light sensor notices the light dropping and lets your code react.",{"body":1334},{"type":7,"value":1335,"toc":1336},[],{"title":502,"searchDepth":503,"depth":503,"links":1337},[],"glossary\u002Flight-sensor","Light Sensor","tEERMTJO24JmYYlQoIO7DxY9yXg0GNehs78E_LQL28U",{"id":1342,"category":1193,"definition":1343,"example":1344,"extension":507,"meta":1345,"stem":1350,"term":24,"__hash__":1351},"glossary\u002Fglossary\u002Fmicro-bit.md","The micro:bit is a tiny programmable computer, about the size of a matchbox, made for learning to code. It has two buttons, a grid of little red LED lights and built-in sensors that can detect movement, light and temperature.","A bit like a pocket-sized computer you can program yourself, a micro:bit can become a step counter, a thermometer or even a simple game.",{"body":1346},{"type":7,"value":1347,"toc":1348},[],{"title":502,"searchDepth":503,"depth":503,"links":1349},[],"glossary\u002Fmicro-bit","GZPIPrw-9_LkW4seKGxZt6hAdg8MO_A_wOS-mN4qDTg",{"id":1353,"category":1268,"definition":1354,"example":1355,"extension":507,"meta":1356,"stem":1361,"term":1362,"__hash__":1363},"glossary\u002Fglossary\u002Fmillisecond.md","A millisecond is a tiny slice of time. There are 1,000 of them in just one second! 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