The o28 LED matrix has a square colorful display that you can control using code or other Bits. Set it to SERIAL mode to program your own graphics, or switch it to SIGNAL mode to play with the preset programs. The case around each o28 LED matrix feat

<div class="warning-callout">While the o28 LED matrix works in serial mode with both the Code Kit app and FUSE, the o29 round LED matrix only works with the codeBit in FUSE.</div><figure><img src="https://hsfiles.gorgias.help/gm/help-centers/19676/attachments/08a5ee87-98a6-4f84-8799-9d61452ecc3b.jpg"></figure>The o28 LED matrix has a square colorful display that you can control using code or other Bits. Set it to SERIAL mode to program your own graphics, or switch it to SIGNAL mode to play with the preset programs.The case around each o28 LED matrix features helpful dimples and magnets, which come in handy when using multiple matrices. The dimples help you position the displays correctly, and the magnets keep them from separating. Snap the cases together when they&apos;re in the correct position, and push apart when they&apos;re not - like the Bits themselves!<h5 id="how-it-works">How it works:</h5>In SIGNAL mode, the LED matrix has 3 bitSnaps: the input bitSnap, the input auxiliary bitSnap, and the output bitSnap. The first input bitSnap controls one aspect of each preset, like brightness or location; while the auxiliary input controls another, like color or location. The output bitSnap connects to other Bits in a circuit. Use different input Bits to control the amount of signal sent to the LED matrix. This will change the display depending on what preset you have selected. All presets require two inputs to fully control them.&#xA0;When you switch the mode of the LED matrix to SIGNAL, pressing the button labeled PRESETS will cycle the LED matrix through Color Wheel, X-Y, Draw, Spectrum, and Scoreboard. The default preset is Color Wheel. However, if you select any preset and power-off, then power-on the LED matrix, it will return to the last preset used.SERIAL mode gives you total control over the display on the LED matrix. While in SERIAL mode, the LED matrix will display any custom images and scrolling text you make. The LED matrix receives serial data, which it translates into images. SERIAL communication is a way to send complex information between computers and other devices. Serial communication is made up of a series of &apos;on&apos; and &apos;off&apos; signals.For a few more technical details checkout the <a href="https://classroom.littlebits.com/bit-o-pedia/led-matrix" target="_blank">Bit-o-pedia page.</a><figure><img src="https://hsfiles.gorgias.help/gm/help-centers/19676/attachments/c17d9323-6175-4992-bde3-881b40ecbe1d.png"></figure>The o29 round LED matrix has a round colorful display that you can control using code or other Bits. Snap any input in front of it to play with preset programs, or customize your own graphics through code when you add a codeBit.<div class="note-callout">Note: most users will need to update the firmware on their codeBits to use FUSE with the Round LED Matrix - the instructions for this will automatically display when you connect your codeBit to a FUSE canvas with Round LED Matrix commands. Detailed instructions on how to install the firmware on your codeBit on a Mac device can be found&#xA0;<a href="https://youtu.be/CBps1EAQO_4" target="_blank">here</a>. If you have a Windows or Chromebook device please&#xA0;<a href="https://jawv1gtqxwp.typeform.com/to/yNVvttgr?typeform-source=sphero.com" target="_blank">contact us</a>&#xA0;for more information.</div><h5 id="how-it-works-1">How it works:</h5>The o29 round LED matrix Bit has 4 modes selectable by the &apos;MODE&apos; button: ANIMATION, FILL, BRIGHTNESS, and COLOR. The 4 numbered LEDs on the circuit board turn on to signify what the current mode is.In ANIMATION mode, the input voltage controls the speed of the stock animation.&#xA0;In FILL mode, the input voltage controls the number of rows that are lit up.&#xA0;In BRIGHTNESS mode, the input voltage controls the brightness when all LEDs are white.&#xA0;In COLOR mode, the input voltage changes the color of all the LEDs at once.You can access more features by adding a SERIAL connection - the codeBit - to the input of the round LED matrix Bit. If there are valid serial messages, ie. programs written in the Code Kit app or FUSE, the Bit will switch to Serial mode and can display custom images. Unlike the square LED matrix, you do not need to press any buttons on the round LED matrix Bit for it to accept and run code.For a few more technical details checkout the <a href="https://classroom.littlebits.com/bit-o-pedia/round-led-matrix" target="_blank">Bit-o-pedia page.</a>

o28 LED Matrix vs o29 Round LED Matrix

<div class="note-callout">Fuse is ready to use with your STEAM+ Kits and STEAM+ Class Packs, however it is still an initial release so we appreciate all feedback as we look to enhance it in the future</div> <h5 id="littlebits-fuse-is-a-web-app-that-functions-inside-the-chrome-browser"><a href="https://fuse.littlebits.com" rel="noopener noreferrer" target="_blank">littleBits Fuse</a> is a web app that functions inside the Chrome browser.</h5><h5 id="fuse-requires-">Fuse requires :</h5><ul><li>Chrome browser&#xA0;version 81 or later</li><li>A computer with Bluetooth capabilitiesand one of these OS&#x2019;s:<ul><li>Chromebook OS (81 or later)</li><li>Android 9 or later</li><li>Windows 10 (vers 1706) or later</li><li>Mac OS 10.13 (High Sierra) or later</li></ul></li></ul> <div class="note-callout">Fuse is not fully compatible with the mobile version of the Chrome browser. Though you may be able to build circuits on your tablet&apos;s browser, communication with codeBit not available.</div>

Code Kit Device Compatibility

Having trouble with your Code? Here are some things to check:. If you’re still having trouble, our Customer Success is happy to help! You can contact us here or at support@sphero.com.

Having trouble with your Code? Here are some things to check:&#xA0;<ul><li>Is all your code connected to the start block?&#xA0;Code that isn&#x2019;t connected to the [START] block and is just hanging out on the canvas will not run when you press upload, so be sure that your code blocks (other than function definitions) are attached to the [START] block</li></ul><figure><img src="https://hsfiles.gorgias.help/gm/help-centers/19676/attachments/7f86094d-135d-4a9d-9f00-70428cbbf5ab.png"></figure><ul><li>Are there any empty code blocks in your code?&#xA0;Empty blocks will keep your code from loading or running!</li></ul><figure><img src="https://hsfiles.gorgias.help/gm/help-centers/19676/attachments/b05e5517-527f-4b1a-9c2b-c2e1761146ee.png"></figure><ul><li>Do the inputs and outputs in your code match your circuit?&#xA0;Make sure that the inputs in your code match your circuit. For example, If you have one input in your circuit and its on IN 3, a [WAIT FOR IN1 TO BE ON] block is not going to work. You&#x2019;ll want to change the input to IN 3 so it reads [WAIT FOR IN3 TO BE ON].</li></ul><figure><img src="https://hsfiles.gorgias.help/gm/help-centers/19676/attachments/dc444372-c52c-4e2f-a520-66a7a3c00d95.png"></figure><ul><li>Do you have a [WAIT] block between frames of an animation?&#xA0;Code runs at a very fast speed, so if you don&#x2019;t give it time to wait, it will move faster than your eyes can see! Make sure that animations have wait blocks between the images.&#xA0; &#xA0;&#xA0;</li></ul><figure><img src="https://hsfiles.gorgias.help/gm/help-centers/19676/attachments/fd318783-b0be-4599-af0a-2f0e322877bd.png"></figure><ul><li>Do you have a [WAIT] block after [SCROLLING TEXT] blocks?&#xA0;The code will not stop and wait for text to scroll on the LED matrix screen, so you will need to add a [WAIT] block after a [SCROLLING TEXT] block. The amount of wait time you give the scrolling text will correspond to the length of your scrolling message. In the example below, we&#x2019;ve added 5 seconds so we can see all of the &#x201C;Hi There&#x201D; message.</li></ul><figure><img src="https://hsfiles.gorgias.help/gm/help-centers/19676/attachments/bdb12b1b-df1a-47c9-9c1f-f16c91bdd7be.png"></figure><ul><li>Are your [ROTATE] [MOVE] or [ADD] blocks followed by a [SEND IMAGE] block?&#xA0;Blocks like [ROTATE IMAGE BY 90], [MOVE IMAGE UP BY 1] and [ADD PIXEL AT X: Y: TO IMAGE] need a [SEND IMAGE] block after them for them to be shown on the LED matrix.</li></ul>&#xA0; &#xA0; &#xA0; &#xA0;&#xA0;<img src="https://support.littlebits.com/hc/article_attachments/115009062126/mceclip5.png" style="box-sizing:border-box;border:0px;vertical-align:middle;height:auto;max-width:100%"><figure><img src="https://hsfiles.gorgias.help/gm/help-centers/19676/attachments/dd90ab7b-232e-46f3-8d8d-2a3f96549a12.png"></figure><ul><li>Are your dark blue logic blocks inside of a dark gray loop block?&#xA0;If you want to check a logic block the whole time your program is running, make sure it is inside of a [DO FOREVER] loop. For example, if you have a button on IN 1 and you have a dark blue logic block to tell you when it&#x2019;s been pressed, you&#x2019;ll need to put it inside of a [DO FOREVER] block. This way, you&#x2019;re constantly checking over and over again whether it&#x2019;s being pressed. If you don&#x2019;t put it inside of a loop block, it will only check to see whether it&#x2019;s been pressed one time, and will then move onto the next code in the program.</li></ul><figure><img src="https://hsfiles.gorgias.help/gm/help-centers/19676/attachments/624beab3-97a4-489d-96f3-98ee0ea4ee73.png"></figure><ul><li>Are you both SETTING and USING the variables you&#x2019;ve created?&#xA0;This may seem like a silly one, but make sure that you both&#xA0;set&#xA0;your variable to a value AND&#xA0;use&#xA0;the variable in your code.</li></ul>&#xA0;<figure><img src="https://hsfiles.gorgias.help/gm/help-centers/19676/attachments/6f693095-8e85-4849-8aed-5c3debd11b8a.png"></figure>If you&#x2019;re still having trouble, our Customer Success is happy to help! You can&#xA0;<a href="https://www.sphero.com/about/contact-us/">contact us here</a> or at support@sphero.com.

Debugging littleBits Code

<figure><img src="https://hsfiles.gorgias.help/gm/help-centers/19676/attachments/ae129833-13d2-45d7-bf61-98ff3e8f9ff1.png"></figure><div class="note-callout">Note that you do not need the codeBit dongle to connect to littleBits Fuse.</div><figure><img src="https://hsfiles.gorgias.help/gm/help-centers/19676/attachments/9c00c30c-aa2e-43ec-b8a7-3961940a6199.png"></figure>

Code Kit Debugging Checklist

1) Please perform the steps below:. - Restart your computer. - Clear your Chrome browser's cache. - Open the FUSE web app on Chrome and navigate to a blank code canvas. - Connect the USB Power Bit to INPUT 1 of the codeBit. - Plug in the USB Cable to

<div class="warning-callout">codeBit Dongle Update - January 2022 - The codeBit dongle has been removed from the littleBits STEAM+ Coding Kit and littleBits Code Kit. Please note that your device must have bluetooth capability to download code from the <a href="https://fuse.littlebits.com" rel="noopener noreferrer" target="_blank">Fuse app</a> to the codeBit.</div> 1) Please perform the steps below:- Restart your computer- Clear your <a href="https://support.google.com/accounts/answer/32050?hl=en&amp;co=GENIE.Platform%3DDesktop" target="_blank">Chrome browser&apos;s cache</a>- Open the <a href="https://fuse.littlebits.com/builder" id="link-159" target="_blank">FUSE web app</a> on Chrome and navigate to a blank code canvas- Connect the USB Power Bit to INPUT 1 of the codeBit- Plug in the USB Cable to a power adapter, rechargeable battery, or powered USB port and the USB Power Bit (you&apos;ll know your Power Bit is powered when the red LED on the Power Bit shines)<figure><img src="https://uploads.gorgias.io/QBGoD2eOVjxdjqlX/Screen_Shot_2021-12-06_at_1.12.02_PM-b3d0ab44-9073-4a58-ae5d-5ef757ec3f26.png" class="fr-fic fr-dii"></figure>- Mouse over the &apos;Connect codeBit&apos; button on the lower right corner of FUSE, then click the word &apos;Connect&apos; in the green bar that appears- You should see a popup from Chrome prompting you to choose your Bluetooth device: <figure><img alt="Chrome Fuse Connection Prompt" data-hd-align="center" data-hd-height="200%" src="https://hsfiles.gorgias.help/gm/help-centers/19676/attachments/c9c5964a-76a0-46bb-9888-4967e08eea32.png" style="max-height: 200%;" class="fr-fic fr-dib"></figure>- Click the &apos;w26 codeBit&apos; from the list and then click &apos;Pair&apos; in the bottom right of the popup- You should see a green LED light up on the printed circuit board of the codeBit under the word &apos;connected&apos;- Try uploading and running a simple program like <a href="https://classroom.littlebits.com/lessons/introduction-hello-world" target="_blank">Hello World</a>. Be sure to adjust your code to reflect the type of LED Matrix you have (Square or Round).<div class="note-callout">***When Testing multiple codeBits, do not change computers or browsers - just disconnect the first codeBit (by mousing over &apos;Connected codeBit&apos; and clicking &apos;connected&apos;), separate the codeBit from the Power Bit and then use that same Power Bit to test the next one***</div>If you&#x2019;re still having trouble, our Customer Success team is happy to help!You can&#xA0;<a href="https://www.sphero.com/about/contact-us/" target="_self">contact us here</a> or at support@sphero.comIn your message, please specify:(1) your operating system version(2) Chrome browser version(3) whether you have successfully connected before(4) whether you are encountering this problem with one or multiple codeBits(5) whether you saw any error message(s) during the above process (and if you did, please provide a screenshot)(6) whether you noticed any other unexpected behavior during this process.

Difficulty Connecting codeBit to Computer

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