I'm trying to control a few NeoPixels using a 3.3V Particle Photon.
I've got a 5V power source that I'm using to power the NeoPixels (as they require that voltage. That works fine.
Them I'm using a 74AHCT125 level shifter to increase the data signal from the Photon from 3.3 to 5.
But I'm seeing sporadic response from the NeoPixels and my hunch is there's something wrong with the power output from the 74AHCT125.
Is there a way I can measure the voltage from the data output of the 74AHCT125? I tried connecting the wire from the 74AHCT125 to my multimeter but I'm not getting any measurement from it.