Search found 16 matches

by RogerFL
Fri Nov 13, 2015 5:48 am
Forum: AT+ Commands
Topic: 1.4.0 does not find my AP
Replies: 1
Views: 3510

1.4.0 does not find my AP

After upgrading Non-OS SDK from 1.3.0 to 1.4.0 (AT version 0.40 to 0.50), the AT+CWLAP command would no longer find my AP. It would still find some APs but not the one I wanted to use, which was physically closest to the ESP8266. When I revert ESP8266 firmware back to 1.3.0 (AT version 0.40) it find...
by RogerFL
Fri Nov 06, 2015 5:12 am
Forum: ESP8266 HDK
Topic: WROOM-02 CE documentation
Replies: 1
Views: 3977

WROOM-02 CE documentation

I'm trying to obtain EMC testing for our product which uses a WROOM-02. I have found the FCC radio test paperwork on the FCC website but I don't know how to find CE paperwork. Where can I find documentation to verify that the appropriate harmonized standards have been applied per the R&TTE Direc...
by RogerFL
Fri Nov 06, 2015 4:48 am
Forum: ESP8266 HDK
Topic: Host pcb pads for wroom-02
Replies: 6
Views: 7934

Re: Host pcb pads for wroom-02

Perfect! I will add the ground pad for wroom-02 to the next revision of my PCB. Meanwhile I will look for the software needed to read the footprints. I use a Eagle on a mac so it will take some work. A drawing with the dimensions of the outline and the other pads would still be helpful, but not nece...
by RogerFL
Fri Oct 16, 2015 10:39 pm
Forum: ESP8266 HDK
Topic: Host pcb pads for wroom-02
Replies: 6
Views: 7934

Re: Host pcb pads for wroom-02

Thank you Kelly. Please can Espressif publish a recommended PCB layout? I also see there is a large pad on the bottom which is not mentioned in 0C-ESP8266__WROOM_WiFi_Module_Datasheet__EN_v0.4.pdf What is the exact position and dimension of that? What signal is it, ground? Should the host PCB layout...
by RogerFL
Sat Aug 22, 2015 9:49 pm
Forum: Documentation Request
Topic: FOOTPRINT OF THE ESP-WROOM-02 WiFi MODULE
Replies: 1
Views: 4880

Re: FOOTPRINT OF THE ESP-WROOM-02 WiFi MODULE

I requested the same thing a while back but went ahead and designed one. Here it is at https://github.com/rogercollins/esp8266

Roger
by RogerFL
Thu Jul 30, 2015 9:05 am
Forum: ESP8266 HDK
Topic: Host pcb pads for wroom-02
Replies: 6
Views: 7934

Host pcb pads for wroom-02

The dimension drawing in the data sheet shows the size of pads on the part (but omitting the cutout half circles on edge pads) as 0.85x0.95mm. Should the host pads be larger on all sides or should host pads extend further outward to allow larger fillet only on outer edge? Or is some other design rec...

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