本项目将在Arduino IDE环境下，利用ESP32产生的PWM信号控制多个LED。项目所需物料如下： ESP32带一个包含16通道LED PWM控制器，可配置以产生不同特性的PWM信号。项目开始之前需要先安装Arduino IDE，连接妥当后就可以把ESP32 DOIT DEVKIT V1板用作LED PWM控制器了。 使用Arduino ...

It all started when [Damien Walsh] got his hands on some surplus LED boards. Each panel contained 100 mini-PCBs hosting a single bright LED that were meant to be to be snapped apart as needed. [Damien ...

[Stefan Schüller] was a fan of the LED signs that display arrival information for the trams and buses in their city of Zürich. [Stefan] was having trouble finding a source to purchase the signs so, ...

打开oneNET MQTT物联网套件，找到应用管理，点击立即前往，如下图所示。 在可视化项目中新建项目。 新建空白模板，填写项目信息。 新建后如下图所示。 选择编辑选项，进入项目编辑界面，如下图所示。 常规图表中选择一个仪表盘，如下图所示。 选中仪表盘 ...

Open-hardware platforms enable rapid prototyping and faster time-to-market of new IoT applications. The objective of this post is to give a brief introduction to another open-hardware IoT playground — ...