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rotating impeller
7 Segment common cathode display
the higher voltage is returned
Holding a magnet near the sensor will cause the output pin to toggle
Higher quality
ESP8266 WiFi 4 Relay Module (5V) Dual DC Motor Driver rotating impellerIntroduction : ESP8266 WIFI 4 Channel Relay Module is 4 channel WIFI relay module carried a ESP8266 WIFI module and mature 8 bit MCU, with Professional switching power supply circuit. It could control the relay by Android phone APP within the local area network Transmission distance 1) the open environment, the mobile phone when carrying on the WIFI module maximum transmission distance of 100 m; (2), when the WiFI module and cell phone carrying on the
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