This function lets you clear the NXT LCD to a blank screen. Examples: ex_ClearScreen.nxc, ex_diaccl.nxc, ex_digyro.nxc, ex_dispftout.nxc, ex_dispgout.nxc, ex_getmemoryinfo.nxc, ex_joystickexmsg.nxc, ex_PolyOut.nxc, ex_ReadSensorHTAccel.nxc, ex_ReadSensorHTAngle.nxc, ex_ReadSensorMSPlayStation.nxc, ex_SetAbortFlag.nxc, ex_SetLongAbort.nxc, ex_string.nxc, ex_sysdrawpolygon.nxc, ex_sysmemorymanager.nxc, and ex_xg1300.nxc.This example shows you how to use Simulink Support Package for LEGO MINDSTORMS EV3 Hardware to run a Simulink® model on LEGO MINDSTORMS EV3 hardware. Simulink Support Package for LEGO MINDSTORMS EV3 Hardware enables you to create and run Simulink models on LEGO MINDSTORMS EV3 hardware. The support package includes a library of Simulink blocks for configuring and accessing LEGO MINDSTORMS EV3 sensors and actuators. Additionally, the support package enables you to monitor and tune algorithms running on LEGO MINDSTORMS EV3 hardware from the same Simulink models from which you developed the algorithms.
In this example you will learn how to create and run a simple Simulink model on LEGO MINDSTORMS EV3 hardware. See other examples for LEGO MINDSTORMS EV3 hardware to learn how to use External mode and to learn how to implement more complex algorithms.If you are new to Simulink, we recommend completing the Interactive Simulink Tutorial, reading the Getting Started section of the Simulink documentation and running the Simulink Getting Started example.You will need the following hardware:LEGO MINDSTORMS EV3 BrickEV3 Wi-Fi Dongle or USB Ethernet Adaptor (Recommendation: Apple USB Ethernet Adapter)Verify the EV3 firmware version, and, if needed, perform a firmware update:1. Turn on EV3 brick2. Navigate EV3 screen to Settings > Brick Info.3. Verify that Brick FW is V1.03E or later3. If the firmware version is earlier than V1.03E, use the LEGO EV3 Software to update the firmware.There are four options to set up a connection between LEGO MINDSTORMS EV3 and your Host machine.1. Use the USB cable to connect the Mini-USB port on the EV3, labelled 'PC', and USB port on your host computer.1.
Enable Bluetooth on your host computer. If it does not have built-in Bluetooth, use a Bluetooth dongle.2. In the EV3 Brick Interface, select Settings > Bluetooth and enable Bluetooth.3. Pair the host computer and EV3 brick.4. Navigate EV3 screen to Settings > Brick Info. Find the device ID of the brick under ID.Option 3: Wired network access1. Plug USB Ethernet Adaptor into EV3 Host USB Port2. Connect USB Ethernet Adaptor to a network socket via an Ethernet cable4. Find the device ID of the brick under ID.5. Find the IP address under IP Address.Option 4: Wireless network access1. Plug EV3 Wi-Fi Dongle into EV3 Host USB Port2. Navigate EV3 screen to Settings > WiFi. Enable WiFi, search and connect to a WiFi network. See detailed instructions in EV3 USER GUIDE.3. Find the device ID of the brick under ID.4. Find the IP address under IP Address.For Wired and Wireless network access, perform the following test.In the MATLAB Command Window, enter h = legoev3(''). For example, h = legoev3('192.168.1.7'), to confirm the network connection between host machine and EV3 brick.
Simulink Support Package for LEGO MINDSTORMS EV3 Hardware provides blocks that you can use to work with LEGO MINDSTORMS EV3 sensors and actuators.1. Enter simulink at the MATLAB® prompt. This opens the Simulink Library Browser.2. In the Simulink Library Browser, navigate to Simulink Support Package for LEGO MINDSTORMS EV3 Hardware.3. Double-click the Button and Display block. Review each block mask, which contain a description of the block and parameters.In this task, you will create a simple Simulink model that detects the state of the left button on the EV3 brick and displays it on the EV3 brick LCD.1. In MATLAB, select HOME > New > Simulink Model.2. Drag the Button and Display blocks to the model. Use the default settings for both blocks.3. Connect the Button block to the Display block.In this task, you will configure and run your model on the LEGO MINDSTORMS EV3 hardware.1. In your Simulink model, click Tools > Run on Target Hardware > Prepare to Run... .2. In Configuration Parameters, set the Target hardware parameter to LEGO MINDSTORMS EV3.3.
Update the Host to Target Connection parameters with the ones found in Task 2.5. In your Simulink model, click the Deploy to Hardware button on the toolbar. The model will now be deployed to the LEGO MINDSTORMS EV3 hardware.6. Look at the EV3 brick LCD while you press the left button. The LCD displays the state of the left button, 0 for not pressed, 1 for pressed.A pre-configured model is included for your convenience. To change the IP address setting of the preconfigured model, click Tools > Run on Target Hardware > Options....There are two ways to stop the application running on EV3 brick.Option 1: Press the Back button on EV3 brick.Option 2: Enter a command in the MATLAB Command Window.Reuse variable h created in Task 2. For example, if your model name is ev3_gettingstarted, enter h.stopModel('ev3_gettingstarted').Run an existing model application on EV3 brick from MATLAB command line. nModel('ev3_gettingstarted')Delete a model application on EV3 brick from MATLAB command line. For example, run command h.deleteModel('ev3_gettingstarted')This example introduced the workflow for creating an algorithm in a Simulink model, and then running it on LEGO MINDSTORMS EV3 hardware.
In this example you learned that:Simulink Support Package for LEGO MINDSTORMS EV3 Hardware provides blocks for configuring, reading and writing to LEGO MINDSTORMS EV3 sensors and actuators.You can use the Deploy to Hardware button to run the model on LEGO MINDSTORMS EV3 hardware. 404 (Page Not Found) Error If you're the site owner, one of two things happened: 1) You entered an incorrect URL into your browser's address bar, or 2) You haven't uploaded content. If you're a visitor and not sure what happened: 1) You entered or copied the URL incorrectly or 2) The link you used to get here is faulty. (It's an excellent idea to let the link owner know.)Step 1: Download the latest ev3dev image file Step 2: Flash the SD card Step 3A (Raspberry Pi only): Update options in config.txt Step 3B (BeagleBone only): Select cape in uEnv.txt Step 4: Boot ev3dev Step 5: Set up a network connection Step 6: Connect to the EV3 via SSH Step 7: Choose a programming language and write some code
So you’re ready to try out ev3dev. Here are step-by-step instructions to help you get ev3dev up and running on your EV3 or Raspberry Pi. First, here are the things you need before starting: A LEGO MINDSTORMS EV3 Intelligent Brick or Raspberry Pi (any model). A microSD or microSDHC card (2GB or larger). microSDXC is not supportedAll cards larger than 32GB will not work with the EV3! A computer with an adapter for the SD card. You will need administrator user permissions on this computer. A way to communicate. For the EV3, this can be one of the following: USB cable (the one that comes with the EV3) USB Ethernet (wired) dongle For Raspberry Pi you can use a wired Ethernet connection first. With PiStorms the EV3 options will work too since you have a built-in screen to configure them on. With BrickPi you can also set up other connections from the console using an external screen and keyboard. The instructions on this page only apply to releases dated December
Older releases are no longer supported. There are many major changes in the December release, so if something seems broken or the documentation seems incorrect, please open an issue on GitHub. Step 1: Download the latest ev3dev image file Download for LEGO MINDSTORMS EV3 To get started, you will need to download the release corresponding to the platformFor additional downloads and advanced information, check out ourVisit the GitHub releases page and find the image that corresponds to your platform: Releases for the LEGO MINDSTORMS EV3 start with ev3- Releases for the Raspberry Pi 1 start with rpi- Releases for the Raspberry Pi 2 and 3 start with rpi2- Releases for the BeagleBone start with evb- This will erase everything on your SD card! Back up your files if you do not want to lose them! Now it’s time to write the image to the card. Download and install Etcher from their website. Launch Etcher after it has finished installing.
Click the “Select image” button and browse to the folder where you downloaded an ev3dev release. Select the file that you downloaded. The release can be a .img.zip or .img.xz; you have will work with Etcher. Image chosen in Etcher Plug the SD card into your PC (if your PC doesn’t have a micro SD slot, you can use an adapter or external reader). detect the new device and display its information under the “SelectConfirm that the selected drive is correct. Drive selected in Etcher If you have multiple removable drives available, you may need to use the “Change” button to select the proper device. When you are confident that you have selected the correct drive, click “Flash!” and wait for the operation to complete. Etcher flashing the SD card If you arrive at this screen, you have successfully flashed your SD card and are ready to move on to the next step. For more detailed information and flashing utility alternatives, check out
You can also check out this page for RaspberryPi. Much of the information there is applicable to ev3dev. This is for Raspberry Pi only! Users of other platforms can skip this step. You must make some changes to config.txt to enable support for BrickPi or PiStorms before you put your SD card in your Raspberry Pi. You may have to remove the SD card from your host computer and plug it back in after flashing it in order for it to be detected. In your file browser, openThis contains a file named config.txt. in your favorite text editor and follow the instructions in the file to enable either BrickPi or PiStorms. This is for Beaglebone only! You must make some changes to uEnv.txt to enable support for FatcatLab EVB or QuestCape before you put your SD card in your BeagleBone.This contains a file named uEnv.txt. in your favorite text editor and follow the instructions in the file to select the cape your are using. Put the SD Card in your EV3 and power it on.
At first, you will see the MINDSTORMS boot splash and the red LEDs will be on. followed by the ev3dev boot splash and the LEDs changing to orange. LEDs indicate disk (SD card) activity. After about one minute, the screen will go blank. This happens on the first bootThe first boot takes longer than subsequent boots because the EV3 has to create a unique SSH host ids and take care of a few other housekeepingAfter another minute or two, you will see the brickman loading… screen. If nothing has happened after five minutes, something is not right - check the You will notice the number in the battery in the upper right corner. displays the remaining voltage of the power supply. It is not possible to calculate an accurate percent value of the remaining energy, so this value isIf the voltage drops below 5V the brick will turn off. data will be lost. Keep in mind, that it may take a much longer time from 8V to 6.5V than from 6.5V down to 5V!
Note: If you are using Raspberry Pi hardware without a screen, just wait for the Activity LED to stop flashing, then go to the next step. you have connected the pi to a screen monitor via HDMI press Ctrl+Alt+F6 at the end of the boot sequence. This should take you to a login prompt. Login as ‘robot’ with password ‘maker’. When the boot is complete, the LEDs will turn green and you will see something like this on the screen Make sure nothing is plugged into the EV3 (USB/sensors/motors/etc.) Try writing the image to the SD card again. You may have a bad/incompatible SD card - try a different SD card. Check the condition of the EV3 batteries. You’ll often want to turn off your EV3 while it isn’t in use. When you are ready to wish your EV3 good night, turn if off by pressing the back button from the main menu in brickman or pressing and holding the back button from any screenThis will open a dialog where you can select Power Off to turn
If you’re using the command line, running sudo poweroff in a The 'Shutdown...' dialog in Brickman Click on the button below to visit our networking page. There are lots ofchoose the connection option that best suits you and your Check out the available networking options Now that you have a network connection, you should connect to your EV3 with SSH. Connecting allows you to verify that the networking option that you configured in the previous step is working. Once you have an SSH connection, you will be able to securely run terminal commands on the EV3 from your PC. run programs, change settings, and install new programs. Click the button below to learn how to connect. Learn how to connect with SSH To test this out, let’s try running a command (make sure that you have completed the earlier part of this step first). Type the command fortune into the SSH shell opened above and pressIt will use a nifty program called fortune to print out a