Need help connecting WIFI-ESP8266 to another company's board...

[hololeap]

Hello everyone. I'm new to the world of Arduino although I have experience with some electronics and programming stuff. I want to set up a Wi-Fi temperature monitoring station, and I decided to get a Seeeduino Lotus (v1.0) since they (Seeed Studio) have a couple good thermometer modules. I purchased it through Mouser Electronics and they don't seem to carry the Seeed Studio Wi-Fi modules, so I got the WIFI-ESP8266 instead.

I was hoping that it would be as simple as hooking up the 3.3V, TXD, RXD, and GND lines from the UEXT port on the WIFI-ESP8266 to the corresponding ports on the Lotus. However, I don't understand these technologies fully and after reading the WIFI-ESP8266 jumper PDF I don't know what "mode" it is in by default (but I think I want it in UART mode...)

If anyone can help, it would be much appreciated.


Here is the wiki page for the Lotus:
http://www.seeedstudio.com/wiki/Seeeduino_Lotus_v1.0

And the product page for the Seeed Studio ESP8266 module plus a wiki article for setting it up with the Lotus:
http://www.seeedstudio.com/depot/WiFi-Serial-Transceiver-Module-w-ESP8266-p-1994.html
http://www.seeedstudio.com/wiki/WiFi_Serial_Transceiver_Module

[hololeap]

Just a quick update: I have the UART port on the Lotus hooked up to the corresponding wires on the WIFI-ESP8266 (the Vcc on the Lotus UART port is 5V, so I redirected this wire to the Lotus's 3.3V port instead). I get a solid red LED and a brief flash of the green LED when I plug it in.

I still need to know if the WIFI-ESP8266 is in UART mode by default...

[LubOlimex]

No, both products that fit your description ("MOD-WIFI-ESP8266" and "MOD-WIFI-ESP8266-DEV") are not in UART mode by default. They are in FLASH mode by default.

You would need to change the position of the PTH jumpers as explained here:

https://www.olimex.com/Products/IoT/MOD-WIFI-ESP8266/resources/MOD-WIFI-ESP8266_jumper_reference.pdf

or here:

https://www.olimex.com/Products/IoT/MOD-WIFI-ESP8266-DEV/resources/MOD-WIFI-ESP8266-DEV_jumper_reference.pdf

Best regards,
Lub/OLIMEX