ESP8266 Community Forum

- Tue Feb 24, 2015 9:06 pm #10648 Hello!

Just got my ESP8266 boards in the mail (along with a 3.3v USB TTY module) and am trying to hook them all up. The issue I'm running into is that as soon as I pull up CH_PD to VCC, the USB module starts resetting over and over (or at least that's what I think is happening -- the "activity" lights start flashing like crazy, and my Linux machine loses any trace of the USB TTY being attached...as soon as I remove that jumper, the Linux box picks it back up, which is what makes me think it's the board resetting.)

If anyone has any comments or advice, I'd love to hear it!

Thanks so much (and thanks to this awesome community for all the tutorials and such -- they've kept me fully entertained and up to date while waiting for my modules in the mail!)

- Tue Feb 24, 2015 11:13 pm #10657 It keeps resetting, because the ESP is drawing more current than the USB bridge can handle. You need a separate power supply.

- Wed Feb 25, 2015 4:07 am #10674 I have been having exactly the same issue when powering my ESP module through an FTDI232RL via the USB port on my laptop. I am running Ubuntu 14.04. Thank you for the tip MK1888, I will try powering the device from 2 x AA batteries and see if it resolves the issue for me.

- Wed Feb 25, 2015 11:09 pm #10750 Yes, thanks a lot! That seems to have at least gotten me on to a new problem (which is at least a certain form of progress (; ). Now I just have to figure out why I can't flash new firmware on it or communicate over serial... (but that will be a separate post after I give it a few more hours of fiddling). Thanks for the help!