ESP8266 Community Forum

On both a raspberry pi 4 and MacBook, a set of 3 esp8266 wemos d1 fail both upload and esptool.py chip_id.

The voltage is 5.02 - 5.05 on the Mac and 4.97-5.01 on the pi 4.

I am unable to figure the reason for the 80% failure, and the 20% success

Tried several baud rates which had no noticable effect.

any suggestions for 100% success or 100% failure (easier) will be appreciated.



bradshawlupton@bradshaw-mac-book-pro ~ % esptool.py chip_id

esptool.py v2.6
Found 3 serial ports
Serial port /dev/cu.usbserial-A50285BI
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
MAC: 40:91:51:53:2b:77
Uploading stub...
Running stub...
Stub running...
Chip ID: 0x00532b77
Hard resetting via RTS pin...


bradshawlupton@bradshaw-mac-book-pro ~ % esptool.py chip_id

esptool.py v2.6
Found 3 serial ports
Serial port /dev/cu.usbserial-14310
Connecting........_____....._____.....__^C
Traceback (most recent call last):
KeyboardInterrupt



bradshawlupton@bradshaw-mac-book-pro ~ % esptool.py chip_id

esptool.py v2.6
Found 3 serial ports
Serial port /dev/cu.usbserial-A50285BI
Connecting........_____.....^C
Traceback (most recent call last):

There could be a number of reasons why this is happening. It could be related to the serial port, baud rate or even the power supply.
One suggestion is to try a different USB cable or USB port on your computer. Additionally, try to use a different power supply to see if that resolves the issue.
You can also try to connect the board to the Raspberry Pi 4 and see if the same issue persists.
It might also be helpful to check the firmware version of ESP8266 and make sure it is compatible with your esptool version.