Hello,
I am interested in using the Data Logger Shield and was wondering what is the maximum channel voltage it could handle as data input? I can't seem to find this information but may be obvious to some already. I need it to handle up to 15 volts ideally in a battery monitoring project.
Thanks in advance,
Jim
Data Logger Shield Maximum input voltage
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- adafruit_support_bill
- Posts: 88093
- Joined: Sat Feb 07, 2009 10:11 am
Re: Data Logger Shield Maximum input voltage
If you are using the analog input pins on your processor, then it will depend on the processor you are using.
In general, 5v processors like the Arduino UNO can tolerate up to 5v on the analog pins. 3.3v processors like the Arduino Zero can tolerate up to 3.3v.
If you want to measure a higher voltage than your processor will tolerate, you can divide it down using a voltage divider: https://en.wikipedia.org/wiki/Voltage_divider
In general, 5v processors like the Arduino UNO can tolerate up to 5v on the analog pins. 3.3v processors like the Arduino Zero can tolerate up to 3.3v.
If you want to measure a higher voltage than your processor will tolerate, you can divide it down using a voltage divider: https://en.wikipedia.org/wiki/Voltage_divider
- millercommamatt
- Posts: 832
- Joined: Tue Jul 31, 2018 4:57 pm
Re: Data Logger Shield Maximum input voltage
The shield just provides an SD card, a real time clock, a 3.3 voltage regulator, and a prototyping area. The input limits on the analog in pins are determined by the Arduino board. Those limits are 5 V max input.
Someone else might have a better solution for you but maybe this will meet your needs: https://www.adafruit.com/product/904
Someone else might have a better solution for you but maybe this will meet your needs: https://www.adafruit.com/product/904
- jshep1956
- Posts: 3
- Joined: Fri Jan 11, 2019 3:26 pm
Re: Data Logger Shield Maximum input voltage
Thank you for the information about the maximum voltage of the Arduino and Voltage Divider suggestion. That is just what I needed.adafruit_support_bill wrote:If you are using the analog input pins on your processor, then it will depend on the processor you are using.
In general, 5v processors like the Arduino UNO can tolerate up to 5v on the analog pins. 3.3v processors like the Arduino Zero can tolerate up to 3.3v.
If you want to measure a higher voltage than your processor will tolerate, you can divide it down using a voltage divider: https://en.wikipedia.org/wiki/Voltage_divider
- jshep1956
- Posts: 3
- Joined: Fri Jan 11, 2019 3:26 pm
Re: Data Logger Shield Maximum input voltage
millercommamatt wrote:The shield just provides an SD card, a real time clock, a 3.3 voltage regulator, and a prototyping area. The input limits on the analog in pins are determined by the Arduino board. Those limits are 5 V max input.
Someone else might have a better solution for you but maybe this will meet your needs: https://www.adafruit.com/product/904
Good to know. Thanks for the information.
Please be positive and constructive with your questions and comments.