Stemedu 2PCS USB to ESP-01 Adapter, ESP8266 Wireless WiFi Module Wi-Fi CH340G, UART PORG, 4.5-5.5V, 115200 Baud Rate
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Features :
Video link https://youtu.be/p7-jerp1v9k
Easy to use: Unlike other ESP01 programmer, this one has a little rocker switch on the side which is very handy
ESP-01 serial wifi module can be directly plugged into the yellow pin header without any connection wires
Baud Rate: 115200, Selectable working mode: On-board toggle switch. UART side for serial TTL debugging by AT commands, PROG for firmware programming
USB to serial TTL chip: CH340G, please install driver before use it