diff --git a/Sonoff-Pow-and-Pow-R2.md b/Sonoff-Pow-and-Pow-R2.md index 6522dcd2..7298e5c8 100644 --- a/Sonoff-Pow-and-Pow-R2.md +++ b/Sonoff-Pow-and-Pow-R2.md @@ -14,15 +14,19 @@ It can at least destroy your Pow! **The GPIOs on the Pow might be connected to AC power**, therefore it is not possible to add sensors to the Pow. -**The AC connection between Pow and Pow R2 is different so be careful when you perform an in-place replacement** +**The AC connection between Pow and Pow R2 is different**, so be careful when you perform an in-place replacement. +- Pow R2 AC connection: Lo-E-E-Li-N-N = LineOut-EarthOut-EarthIn-LineIn-NeutralOut-NeutralIn +- Pow AC connecrion: Lo-E-E-N-N-Lin = LineOut-EarthOut-EarthIn-NeutralOut-NeutralIn-LineIn ## Serial Connection -picture of the Sonoff Pow PCB, the needed pin header can be seen on the top end +picture of the Sonoff Pow PCB, the needed pin header can be seen on the top end Please see the [Hardware Preparation](https://github.com/arendst/Sonoff-Tasmota/wiki/Hardware-Preparation) page for general instructions. -As always, you need to access the serial interface. The **four serial pins** (3V3, Rx, Tx, GND) are available at the rear/short end of the PCB as can be seen in the upper part of the image to the right. +As always, you need to access the serial interface. +- Pow R2: The **four serial pins** (VDD, E-RX, E-TX, GND) are available at the rear/short end of the PCB as can be seen in the upper part of the image to the right. Do not use I04 and I05. +- Pow: The **four serial pins** (3V3, Rx, Tx, GND) are available at the rear/short end of the PCB as can be seen in the upper part of the image to the right. ## Calibration Sonoff Pow might need calibration as correct measurements are influenced by hardware and timing differences.