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Add serial pin info and AC pin info

Theo Arends 2018-04-20 17:10:58 +02:00
parent b7f9573842
commit 688a917746
1 changed files with 7 additions and 3 deletions
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10
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 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 ## Serial Connection
<img alt="picture of the Sonoff Pow PCB, the needed pin header can be seen on the top end" src="https://www.itead.cc/wiki/images/e/e3/Sonoff-Pow-00.JPG" width="40%" align="right" /> <img alt="picture of the Sonoff Pow PCB, the needed pin header can be seen on the top end" src="https://www.itead.cc/wiki/images/e/e3/Sonoff-Pow-00.JPG" width="50%" align="right" />
Please see the [Hardware Preparation](https://github.com/arendst/Sonoff-Tasmota/wiki/Hardware-Preparation) page for general instructions. 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 ## Calibration
Sonoff Pow might need calibration as correct measurements are influenced by hardware and timing differences. Sonoff Pow might need calibration as correct measurements are influenced by hardware and timing differences.