BMP085 to nanodeRF

Submitted by saturno on Tue, 13/03/2012 - 17:15

Hello,

I bought the Pressure Plug from JeeLabs which is basically the BMP085 in a board.

I would like to get some help in order to connect it to a nanodeRF without burning everything at the first try...

Thanks for any help.

Regards,

Luis

Re: BMP085 to nanodeRF

Submitted by mharizanov on Tue, 13/03/2012 - 19:22.

it is a I2C sensor, but a 3.3V one. There is nothing really fancy about connecting it. Power the SDA and SCL lines like this, BUT from the 3.3 line, I googled up that pic and it is for a 5V system

Re: BMP085 to nanodeRF

Submitted by saturno on Wed, 14/03/2012 - 00:22.

Hi Mharizanov!

Thanks for your input.

Please correct me if my assumption's wrong:

Those SCL and SDA from the sensor are connected to two analog pins on the nanodeRF (Arduino); can they be exchanged without damaging anything? My question is mainly because nanodeRF have a little different pin assignment than Arduino and I am trying to avoid damaging it at the first try.

Before posting this question, I already reviewed some code examples from people that are using this sensor. One thing that confuses me is that I thought that in order to exchange information to/from this sensor with nanodeRF/arduino I was required to explicitly define or configure the pins I used to connect the sensor in the sketch. But none of the sketches I saw showed that kind of information. If this is correct, how does the arduino know how should it communicate with the sensor?

Thanks once more.

Regards,

Luis

Re: BMP085 to nanodeRF

Submitted by saturno on Wed, 14/03/2012 - 01:42.

Ok, I think I sorted it out.

The SCL and SDA pins are also identified on nanodeRF. Just got the nanoedRF pins list and confirmed this.

This means that soon I'll post some news on how I'm getting this to work.

Cheers,

Luis

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