Adafruit Data logger Shield
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Adafruit Data logger Shield

by Biomech on Tue Oct 29, 2013 8:16 am

Hi support team

I got a datalogger Shield and a little problem with it.
I need for my project the RTC and two MPU6050.
Now the problem is: bouth of them got the adress 0x68.
I solved it with one chip. I only had to change the adress and pin I used before. But now if i want an 2and Chip I need the RTC adress.

So my question: how can i change the RTC adress to something else?
Biomech
 
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Re: Adafruit Data logger Shield

by adafruit_support_bill on Tue Oct 29, 2013 8:32 am

You can use software i2c to talk to the DS1307. You will have to cut & jumper some pins to make it work: viewtopic.php?f=25&t=13722#p66953
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Re: Adafruit Data logger Shield

by Biomech on Wed Oct 30, 2013 9:55 am

Wich pins I have to cut and Jump?
The problem is: nowhere in the internet is a description what to do. Its always just written that this should be possible.
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Re: Adafruit Data logger Shield

by adafruit_support_bill on Wed Oct 30, 2013 10:10 am

You have to cut the existing i2c pins and run jumpers to two other unused pins. We would need more information from you in order to give more specific advice:
What kind (and what version) of Arduino are you using?
Which version of the Data Logger shield are you using?
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Re: Adafruit Data logger Shield

by Biomech on Wed Oct 30, 2013 10:29 am

I bought exactly this shield: http://www.adafruit.com/products/1141
I'm using the arduino Uno R3.
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Re: Adafruit Data logger Shield

by adafruit_support_bill on Wed Oct 30, 2013 11:27 am

OK. So you will need to cut traces to both the 'classic' and r3 sets of i2c pins.

There are rows of breakout holes running parallel to the headers. If you look closely, you should see traces connecting the breakout holes to the header pins. You can cut these with a sharp knife or a Dremel type rotary tool. The 4 traces you need to cut are SCL and SDA - located near the reset button. And A4 and A5 located on the opposite corner of the board.

Then you cun run jumpers from the SCL and SDA breakout holes to any the breakout holes for any two unused pins. (you don't need to run jumpers from A4 and A5.
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