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By gmc
#6564 Just received one of these modules from eBay and trying to get it working with the Arduino.

Before I connected to the Arduino I've wired it up to a USB-TTL cable and wires up the module.

When looking at the output on the COm port I get a boot loop,

All I can see is something about WDT, and then fatal exception (0).

I've read that for the Arduino I need to flash another firmware to get the baud rate to 9600. Currently its 115200

Its not a power supply issue as I have it hooked up to a 3.3V stable PSU.

Any ideas what's causing this or should I just ignore it and flash the latest firmware?
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By gmc
#6574 Sorry - double post.

Problem fixed - found a post in German where someone was having the same problem. Upped voltage to 3.4V and its working perfectly now! :D