I am trying to follow this tutorial but when I get to the step...
"Once the ESP board is in bootload mode, upload the sketch via the IDE"
..I get the following error in Arduino IDE:
File "[path]/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/2.5.2/tools/esptool\esptool.py", line 468, in connect raise FatalError('Failed to connect to %s: %s' % (self.CHIP_NAME, last_error)) esptool.FatalError: Failed to connect to ESP8266: Timed out waiting for packet header
Any ideas about how to fix this?