Hardware Itead Sonoff POW R2 - xoseperez/espurna GitHub Wiki

Itead Sonoff POW R2

Sonoff POW

Property	Value
Manufacturer	Itead Studio
Product page	https://www.itead.cc/sonoff-pow-r2.html
Wiki page	https://www.itead.cc/wiki/Sonoff
Build flag	`ITEAD_SONOFF_POW_R2`
Voltage	3v3

Sonoff POW

Introduction

Unlike the original POW, the new POW R2 uses a CSE7766 (sometimes a CSE7759b, or CSE77598-SO) power monitor chip. This chip is supported by ESPurna but uses the hardware UART, so there is no serial debug monitor when using the R2 (you can still use the web debug or telnet).

iTead Sonoff Pow R2 with Energy Monitoring

Flashing

The unpopulated header in the Sonoff has all the required pins. My board has a 4 pins header. They are (from the top down) 3V3, E-RX, E-TX and GND. The button is connected to GPIO0, so all you have to do is to power the power the board while pressing the button to get into flash mode.

ℹ️ If flashing fails, try a connecting a pull up resistor between RX and VDD. 470Ω are known to work.

Support

If you're looking for support:

Issues: this is the most dynamic channel at the moment, you might find an answer to your question by searching open or closed issues.
Wiki pages: might not be as up-to-date as we all would like (hey, you can also contribute in the documentation!).
Gitter channel: you have better chances to get fast answers from project contributors or other ESPurna users. (also available with any Matrix client!)
Issue a question: as a last resort, you can open new question issue on GitHub. Just remember: the more info you provide the more chances you'll have to get an accurate answer.