电压笔DIY

电压逻辑笔

http://www.cirmall.com/circuit/2279/detail?3#/details

http://www.cirmall.com/circuit/7543/CD4511%E6%95%B0%E6%98%BE%E9%80%BB%E8%BE%91%E7%AC%94%E5%88%B6%E4%BD%9C%E8%AE%B2%E8%A7%A3%E5%8F%8APCB%E6%96%87%E4%BB%B6#/details

云朵气象站（ESPWIFF）

http://www.cirmall.com/circuit/7505/%E5%88%9B%E6%84%8F%E4%BA%91%E6%9C%B5%E6%B0%94%E8%B1%A1%E7%AB%99%EF%BC%8CArduino%2Bwifi%EF%BC%8C%E5%AE%9E%E7%94%A8%E5%8F%88%E6%BC%82%E4%BA%AE%EF%BC%81#/details