{"id":31547,"date":"2020-04-20T19:26:50","date_gmt":"2020-04-20T11:26:50","guid":{"rendered":"\/blog\/?p=31547"},"modified":"2020-04-20T19:48:19","modified_gmt":"2020-04-20T11:48:19","slug":"ai-with-grove-zero-and-codecraft-scratch-3-0","status":"publish","type":"post","link":"https:\/\/www.seeedstudio.com\/blog\/2020\/04\/20\/ai-with-grove-zero-and-codecraft-scratch-3-0\/","title":{"rendered":"AI With Grove Zero and Codecraft (Scratch 3.0)"},"content":{"rendered":"\n
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Originally posted on instructables: https:\/\/www.instructables.com\/id\/Coronavirus-Stop-the-Spread-With-Microbit\/<\/a><\/em><\/p>\n\n\n\n

In this article we\u2019re going to build three projects utilizing AI functions of Codecraft<\/a>, a graphical programming environment based on Scratch 3.0. Codecraft<\/a> is developed and maintained by TinkerGen<\/a> education and is free to use.<\/p>\n\n\n\n

AI and it is subset, machine learning, has become an integral part of our lives in the last 10 years. School curriculums in many countries include AI and machine learning knowledge, but it can be difficult for an average teacher to create lesson materials for teaching this topic without right tools. Using machine learning libraries, even the most user-friendly ones, such as Keras, to build an application the students can interact with, can be a time-consuming and daunting task. This is where Codecraft might help \u2013 it has a rich set of machine learning powered applications the teacher can use to explain and demonstrate concepts related to artificial intelligence. Let\u2019s have a look at them!<\/p>\n\n\n\n

AI Extensions Overview<\/h2>\n\n\n\n
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Open Codecraft online editor at https:\/\/ide.tinkergen.com\/<\/a> .<\/p>\n\n\n\n

Click on Stage mode and then to Add Extension Button at the bottom of blocks navigation tab.<\/p>\n\n\n\n

You\u2019ll see there are three AI Extensions available:<\/p>\n\n\n\n

\u2013 Cognitive Services \u2014 machine learning models for processing live video feed and sound<\/p>\n\n\n\n

\u2013 Teachable Machine \u2014 can be used for training a classification model with pictures taken with your camera<\/p>\n\n\n\n

\u2013 Translate \u2014 utilizes machine learning for translation<\/p>\n\n\n\n

In this article we will focus on Cognitive Services and using these functions to control Grove Zero hardware. Wireless communication between computer and Grove Zero is still work in progress and I will update the article as soon as it becomes available. For now we will use wired connection to pass the messages between Grove Zero module and computer.<\/p>\n\n\n\n

Play Space Invaders With Your Nose<\/h2>\n\n\n\n

For the first task we will use only stage mode without any hardware. Codecraft has wealth of examples to get started with programming \u2013 one of these examples is programming classic game of Space Invaders in Codecraft Stage mode. We\u2019re going to expand on this example and add the ability to control the in-game fighter with your nose using Cognitive services.<\/p>\n\n\n\n

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Click on Examples button. Open SpaceInvaders example. We only need to change the part relevant to movement. For that we will get x-position of the nose on the face detected in live video feed, save it in variable pos. Then if value of pos is larger than 50, we move our space fighter to the right, if it is less than -50, then we move fighter to the left. This is it. Try it out! If you feel the fighter movement speed is too fast, you can change change x by \u2026 <\/strong>block to a smaller number.<\/p>\n\n\n\n

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Next we will expand on this functionality to control Grove Zero car and make it move forward\/backward\/left\/right.<\/p>\n\n\n\n

Control Grove Zero Car With Codecraft AI<\/h2>\n\n\n\n
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