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5Pcs ESP-01/01S Adapter Board 3.3V ESP8266 WiFi Wireless Module 4 PIN ESP01S Serial Breadboard UART Adapter Module - AliExpress
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Which ESP8266EX microcontroller pins found on the ESP01 module are not used or not connected to anything? - MicroPython Forum (Archive)
ESP-12 pin configuration In this paper we are using the ESP-01 model.... | Download Scientific Diagram
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