让宝宝旋转旋钮即可观察到数值的增减,数位的进位。
- 使用esp32,用arduino ide烧录;
- esp32通过spi连接2.9英寸电子墨水屏,可局部刷新;显示3位数,从零开始增减;
- 使用光电编码器,通过读取a、b两通道的脉冲信号(相位差90°),即可知道变化方向,即正反转,控制屏幕显示数值的增减;
- 同时该光电编码器可按下,即多一个按钮,程序功能是清零数值。
儿童十进制教具
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google ❤️ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.