ESP8266 Community Forum

Take a look to this post by Pete Scargill
http://tech.scargill.net/esp201/
It talk about in esp201 the pcb antenna is connected depending the position of a resistor, in his module was not connected.

I believe that ESP-07 is like ESP-12 but the antenna is a ceramic antena instead of a PCB antenna

Great comparison!

Hi,

Noob chiming in, this was exactly what I was looking, thank you

I am looking to get a couple of ESP8266 for different purposes, one to hook up to my Arduino and one for a standalone application.

• I saw in a video that ESP-03 has been very popular, is this an old version now, and would I be better of with another version e.g. ESP-12 or ESP-201?
• Or perhaps go for ESP-01 since you mention it can be used for both Arduino and standalone? I saw in another video though, that that one might need some physical modifications before standalone usage?

/cheers

The ESP-01 modules can be used standalone, just like the other modules. The problem with the ESP-01 is the lack of GPIO pins. With other models, like ESP-03/07/12 you have all the GPIOs available.

The differences between ESP-07/12 and ESP-03 is the shielding and the CE certificate (which I'm not shure is real or not, but let's believe that's all true).

Ok thanks for the information.

I ended up buying several different modules so I have something to test.

• 2x -03
• 2x -07
• 2x -12
• 1x -201

I received the -07 and -12 today.