ESP01S 1M

Specs

  • ESP8266 in ESP01 format (8 pins, VCC/CH_DP internally bridged ) with 1MB flash memory, ceramic antenna

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Note

Because flash is only 1MB, OTA/Web Update are not possible

Pinout

1 2 3 4
GND IO02 IO0 RXD
TXD CH_PD RESET VCC