Hello,
I’ve built a matrix like described here - https://learn.adafruit.com/adafruit-neopixel-uberguide/basic-connections - using a Photon instead of a raspberry pi.
I’m using a 74AHCT125 - Quad Level-Shifter (3V to 5V) (https://www.adafruit.com/product/1787) to transform the 3.3v from the photon IO pin to the led matrix 5v data in.
My question is - can I power both of them using the same power supply ?
For example - connecting the + and - from the external DC 5v input (10amp) to the + - rows of a bread board (with the 1000 µF, 6.3V capacitor as described in the uber guide), and connecting the + to the vin pin of the photon while also connecting the + to the power of the matrix.