Reply To: Clarivue10 data logging problems

When the sensor is powered, you should be able to put the two probes of a voltmeter on the little screws on top of the screw terminal board where you’ve connected the ClariVue’s cable to the Mayfly.  Put the black probe on the Gndscrew and the red probe on the V+ screw.   You’ll know the sensor is being powered when the red LED on the bottom left corner of the Mayfly board is lit  (the one labeled Switched Power Out).  You can put the Mayfly into test mode by pressing (for one second) the D21 pushbutton next to the microSD card socket.  That’ll wake the Mayfly (and keep it awake) for a few minutes, constantly keeping the output power on and will also output sensor data to the serial monitor every 10 seconds or so.  Putting it in this mode will give you time to check the output voltage with a meter.