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Updated Sonoff 4CH and 4CH Pro (markdown)

TQ Hirsch 2018-12-21 20:56:51 +01:00
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Sonoff-4CH-and-4CH-Pro.md

@ -26,7 +26,7 @@ Compared to the 4CH the main differences/improvements of the 4CH Pro are:
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) can be seen in the first picture.
*Attention:* The printed labels on the PCB for Rx and Tx are incorrectly swapped as can be seen on the image.
*Attention:* The printed labels on the PCB for Rx and Tx may be incorrectly swapped as can be seen on the image. A newer board revision has the Rx and Tx labels in the correct place; regardless of the labels, the pin next to 3V3 is Rx.
<img title="Sonoff 4CH serial connection pins" src="https://github.com/arendst/arendst.github.io/blob/master/media/sonoff4ch_pins.jpg" width="48%" />
<img title="Sonoff 4CH GPIO0" src="https://github.com/arendst/arendst.github.io/blob/master/media/sonoff4ch_gpio0.jpg" width="42%" align="right" />