microbit_ K210 Handwritten Digit Recognition

1.K210 and microbit communication

1.1 Experimental premises

This tutorial uses microbit V2.0, and K210 requires running the program in * * K210-AI (microbit) * * to start the experiment Microbit * 1 Eyu clip * 3 Several DuPont Lines K210 perspective module * 1 (requires SD card (with AI model inside) and camera) USB to TTL module * 1 Import k210AI library：https://github.com/YahboomTechnology/K210-Module

1.2 Experimental wiring

1.3 Main code analysis

From the code, simply configure the serial port and call the relevant serial port and K210 building blocks for data acquisition

• Msg: is the result of handwritten digit recognition

1.4 experimental phenomena

1. After connecting the cable, the K210 perspective module runs offline. Please check 【6.2 K210 as coprocessor】--【ReadMe】
2. Set the serial port assistant to the interface shown in the figure
3. Download the hex program of this tutorial into microbit
4. After starting recognition, you can see that the serial assistant prints something and the microbit screen also scrolls to display the received information. The experimental results in the following figure show the phenomenon of handwritten digit recognition

This experiment displays the results of handwritten digit recognition, and this information is the recognized digits

1.5 Microbit calls the building blocks to parse the results of K210, and the roles of each block

Website of K210 library：https://github.com/YahboomTechnology/K210-Module