8266prog ESP8266 programmer SPI_FLASH \ I2C_EEPROM \ ATTINY \ 1W TEST HW v1.1 ( SPI_FLASH \ I2C \ 1W \ AVR) connections: ESP SOIC 8 Signal GPIO4 1 GPIO12 2 GPIO5 3 +PullUP 3k 4 GND GPIO13 5 +PullUP 3k GPIO14 6 +PullUP 3k GPIO5 7 8 +3V3 GPIO2 - LED