* [[https://www.electronics-lab.com/project/low-frequency-spectrum-analyzer-for-automotive-suspension-analysis/|用于汽车悬架分析的低频频谱分析仪]]
  * [[https://www.electronics-lab.com/project/electronic-stethoscope/|电子听诊器]]
  * [[https://www.electronics-lab.com/project/plants-watering-watcher/|植物浇水观察程序]]