Change data logger shield address
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- RCAVelez
- Posts: 4
- Joined: Wed Nov 10, 2021 3:56 am
Change data logger shield address
I have a new data logger shield from adafruit and it’s address is set to 0x68. I’d like to change this default address. Is there a jumper I can solder to do this on the shield?
- adafruit_support_bill
- Posts: 88154
- Joined: Sat Feb 07, 2009 10:11 am
Re: Change data logger shield address
The PCF8523 RTC chip on the shield has a fixed address of 0x68. There is no option to change it.
https://www.nxp.com/products/peripheral ... up:PCF8523
https://www.nxp.com/products/peripheral ... up:PCF8523
- RCAVelez
- Posts: 4
- Joined: Wed Nov 10, 2021 3:56 am
Re: Change data logger shield address
Would you happen to know of an sd shield or logger that has a default address that is not 0x68,0x69,0x70?
- adafruit_support_bill
- Posts: 88154
- Joined: Sat Feb 07, 2009 10:11 am
Re: Change data logger shield address
I don't know of one. The i2c address is for the RTC chip and almost all of them use address 0x68. The SD card uses SPI, so there is no conflict there.
If you don't need the RTC (some processors like the M0 already have a built-in RTC) you could either cut the SDA/SCL traces to the RTC chip, or use just an SD breakout like this: https://www.adafruit.com/product/4682
If you don't need the RTC (some processors like the M0 already have a built-in RTC) you could either cut the SDA/SCL traces to the RTC chip, or use just an SD breakout like this: https://www.adafruit.com/product/4682
Please be positive and constructive with your questions and comments.