[jabss]

Hi,

I have the latest RX board V3.01 (batch from May 2015), but different form the photo from the other thread - seems an improved version.

I've soldered everything, getting cumulus info on my serial console, and everything is looking great.

However, I have some doubts about the board itself:

a) What are the VP and SWT pins for?

b) Both LEDs turn on on different times, but I'm not sure what do they mean. It seems one indicates the information is being received (RF) and the other means that is being processed by the arduino, but I couldn't get any confirmation on that.

c) I also thought the BMP pressure sensors could generally be fed by both 5V or 3.3V, without any limitation, however there is the possibility to chose which voltage, through some pins. What is the rationalle behind that?

Thanks,
Jabss

[werk_ag]

I have the latest RX board V3.01 (batch from May 2015), but different form the photo from the other thread - seems an improved version.

Yes, it is!

a) What are the VP and SWT pins for?

With current software version, they don't have any use.
(you could use those pins for a button or something alike)

b) Both LEDs turn on on different times, but I'm not sure what do they mean. It seems one indicates the information is being received (RF) and the other means that is being processed by the arduino, but I couldn't get any confirmation on that.

That's it. One will blink everytime the RX receives a packet of data from the outside unit, the other will blink everytime the system outputs a line of data to the serial port (easyweather.dat mode)

c) I also thought the BMP pressure sensors could generally be fed by both 5V or 3.3V, without any limitation, however there is the possibility to chose which voltage, through some pins. What is the rationalle behind that?

You are right, but I had found some BMP modules (I think the first ones to appear with the BMP180 sensor) that only works with 3.3V. The design of the pins makes them suitable to install almost all of the most common BPM modules available.