ESP8266 Community Forum

- Fri Apr 10, 2015 4:46 am #14086 $2 modules --> no good )

- Fri Apr 10, 2015 5:38 am #14088 Michael,
Please post here a high resolution photo of the 2 modules. Top and bottom. Total of 4 photos. Of the good and the bad module and I will analyze the PCBs.
I presume it is about antenna impedance matching.
-Nissim

Kind regards,
Dr. Nissim Zur
Bluetooth Smart, Wi-Fi IoT expert
CTO Elinistech
Skype nissim.test
Follow Linkedin http://lnkd.in/TTnsGz
Email nissim@vitelix.com

- Fri Apr 10, 2015 3:46 pm #14142 Modules are left at work, i will post photos little later.

- Fri Apr 17, 2015 6:35 am #14799 Photos of modules side to side, seems to be different by crystal oscillator:

https://www.dropbox.com/s/7w76k9g1z4wdnxd/2015-04-17%2014.22.28.jpg?dl=0

Good board is bad looking one on the left