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I used thidthis wiring schematic for a couple of my ESP8266-12F projects for programming mode:

enter image description here

As I built enough confidence with the module, I decided to go ahead with a PCB design. When I try to upload a sketch, it wouldn't go into programming mode although I think my design is correct. I checked the connections between pads and headers and they all connected. Am I missing something here? Would you please check the connections and let me know of possible cause?

esptool.py v3.0
Serial port COM4'
Connecting........_____....._____....._____....._____....._____....._____...._____

esptool.FatalError: Failed to connect to ESP8266: Invalid head of packet (0xE0)

enter image description here

I used thid wiring schematic for a couple of my ESP8266-12F projects for programming mode:

enter image description here

As I built enough confidence with the module, I decided to go ahead with a PCB design. When I try to upload a sketch, it wouldn't go into programming mode although I think my design is correct. I checked the connections between pads and headers and they all connected. Am I missing something here? Would you please check the connections and let me know of possible cause?

esptool.py v3.0
Serial port COM4'
Connecting........_____....._____....._____....._____....._____....._____...._____

esptool.FatalError: Failed to connect to ESP8266: Invalid head of packet (0xE0)

enter image description here

I used this wiring schematic for a couple of my ESP8266-12F projects for programming mode:

enter image description here

As I built enough confidence with the module, I decided to go ahead with a PCB design. When I try to upload a sketch, it wouldn't go into programming mode although I think my design is correct. I checked the connections between pads and headers and they all connected. Am I missing something here? Would you please check the connections and let me know of possible cause?

esptool.py v3.0
Serial port COM4'
Connecting........_____....._____....._____....._____....._____....._____...._____

esptool.FatalError: Failed to connect to ESP8266: Invalid head of packet (0xE0)

enter image description here

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Issues Programming esp12fprogramming ESP12F

I used belowthid wiring schematic for a couple of my ESP8266-12F projects for programming mode.:

enter image description here

As I built enough confidence with the module, I decided to go ahead with a PCB design. However, whenWhen I try to upload anya sketch, it wouldn't getgo into programming mode although I think my design is correct. I checked connectionthe connections between pads and headers and they all connected. amAm I missing something here? wouldWould you please check the connectionconnections and let me know of possible cause?

esptool.py v3.0
Serial port COM4'
Connecting........_____....._____....._____....._____....._____....._____...._____

esptool.FatalError: Failed to connect to ESP8266: Invalid head of packet (0xE0)

enter image description here

Issues Programming esp12f

I used below wiring schematic for a couple of my ESP8266-12F projects for programming mode.

enter image description here

As I built enough confidence with the module, I decided to go ahead with PCB design. However, when I try to upload any sketch, it wouldn't get into programming mode although I think my design is correct. I checked connection between pads and headers and they all connected. am I missing something here? would you please check the connection and let me know of possible cause?

esptool.py v3.0
Serial port COM4'
Connecting........_____....._____....._____....._____....._____....._____...._____

esptool.FatalError: Failed to connect to ESP8266: Invalid head of packet (0xE0)

enter image description here

Issues programming ESP12F

I used thid wiring schematic for a couple of my ESP8266-12F projects for programming mode:

enter image description here

As I built enough confidence with the module, I decided to go ahead with a PCB design. When I try to upload a sketch, it wouldn't go into programming mode although I think my design is correct. I checked the connections between pads and headers and they all connected. Am I missing something here? Would you please check the connections and let me know of possible cause?

esptool.py v3.0
Serial port COM4'
Connecting........_____....._____....._____....._____....._____....._____...._____

esptool.FatalError: Failed to connect to ESP8266: Invalid head of packet (0xE0)

enter image description here

added 134 characters in body
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motion channel
motion channel
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I used below wiring schematic for a couple of my ESP8266-12F projects for programming mode.

enter image description here

As I built enough confidence with the module, I decided to go ahead with PCB design. However, when I try to upload any sketch, it wouldn't get into programming mode although I think my design is correct. I checked connection between pads and headers and they all connected. am I missing something here? would you please check the connection and let me know of possible cause?

esptool.py v3.0
Serial port COM4'
Connecting........_____....._____....._____....._____....._____....._____...._____

esptool.FatalError: Failed to connect to ESP8266: Invalid head of packet (0xE0)

enter image description here

I used below wiring schematic for a couple of my ESP8266-12F projects for programming mode.

enter image description here

As I built enough confidence with the module, I decided to go ahead with PCB design. However, when I try to upload any sketch, it wouldn't get into programming mode although I think my design is correct. I checked connection between pads and headers and they all connected. am I missing something here? would you please check the connection and let me know of possible cause?

esptool.FatalError: Failed to connect to ESP8266: Invalid head of packet (0xE0)

enter image description here

I used below wiring schematic for a couple of my ESP8266-12F projects for programming mode.

enter image description here

As I built enough confidence with the module, I decided to go ahead with PCB design. However, when I try to upload any sketch, it wouldn't get into programming mode although I think my design is correct. I checked connection between pads and headers and they all connected. am I missing something here? would you please check the connection and let me know of possible cause?

esptool.py v3.0
Serial port COM4'
Connecting........_____....._____....._____....._____....._____....._____...._____

esptool.FatalError: Failed to connect to ESP8266: Invalid head of packet (0xE0)

enter image description here

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