I am trying to connect an Althen AV0823B vibration sensor to the SARA N211. The output is an IEPE voltage. From what I’ve read online the output is the sum of the input voltage (5V), the sensor bias (12-14V) and the output voltage (0-6V). So the reading should be around 17-25 V, can I read this with the SARA or will it damage the board?
The I/O levels of the pins are 3.3V. Keep the voltage between 0 - 3.3V.
The 5V pin on the SODAQ SARA is only connected when the USB is connected. There is no 5V when the board is battery powered.
Thank you for letting me know, Jan. Do you have any suggestions on how to read an IEPE output with Arduino?
I am not familiar with IEPE output.
Maybe you can search for Arduino Zero / M0 / 3.3V together with IEPE.
Thanks for the suggestion. I have been busy researching it. So far I found that you need a signal conditioner to get the input current to the required specifications and that you need an interface (ie: TIDA-01471) or an converter (ie: LTC1859) in order to deal with the > 20V output. As I find out more, I’ll update the thread in case anyone else might be interested.