HUZZAH board not working (no LEDs)

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UnbiasedZener
 
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Joined: Sun Oct 16, 2016 10:46 pm

HUZZAH board not working (no LEDs)

Post by UnbiasedZener »

I recently got the HUZZAH board off Amazon, and today, when I plugged it in two of the lights blinked quickly, and then I was able to connect to the Lua console. I put it on a breadboard with some LEDs and tried toggling them, and everything was working well at first, but at some point the serial session disconnected and now I can't connect.

It turns out now that when I turn on the board, none of the LEDs blink link before, both using the FTDI cable and using a 2A 5V power source. I've tried to re-flash nodeMCU, with no luck (using OS X). This is also after putting a 220 ohm resistor between pin #0 and GND; I verified that there was 5V between V+ and GND, so it's at least getting powered. I also can't flash anything via Arduino.

Here's the output from trying to flash the board using esptool:
➜ ~ ls /dev/tty.*
/dev/tty.Bluetooth-Incoming-Port /dev/tty.usbserial-AL00A3UC
➜ ~ /usr/local/bin/esptool.py -p /dev/tty.usbserial-AL00A3UC --baud 460800 write_flash --flash_size=8m 0 ~/Downloads/nodemcu-master-8-modules-2016-10-17-01-41-36-integer.bin
esptool.py v1.1
Connecting...

A fatal error occurred: Failed to connect to ESP8266
Any ideas what's going on? Is the board defective? Thanks.

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adafruit_support_rick
 
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Joined: Tue Mar 15, 2011 11:42 am

Re: HUZZAH board not working (no LEDs)

Post by adafruit_support_rick »

Please post clear, detailed pictures of both sides of the module, showing your soldering.

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