ESP8266 Community Forum

It is my getting started project with the ESP8285 chip, and my main goal is to learn how this chip works.

My not final schematic:


The things I want to achive:

• LiPo battery operation (JST-PH2)
• UART Programmibility
• A few sensor on the I2C bus
• Optional deep sleep
• 8 exposed pins for testing

The topics that are bit unclear and I would be grateful to get some insight are:

• How exactly the deep sleep and the wakeup works?
• Is this board sufficient to be programmed with an USB->UART programmer?
• Are there any hidden differences between the ESP8566 and the ESP8585 (besides the larger memory)?

Updated schematic:



Board:

you don't want to connect rst directly to xpd as it will give you headache when reprogramming ...

schufti wrote:you don't want to connect rst directly to xpd as it will give you headache when reprogramming ...

The only risk I see, is the possibility of a reset loop, if I set the port low in code. Is there anything else? Now I have a diode after the port, to protect it, and also have the possibility to disconnect it.