The GPIO interface requires root privilege for access so the Wolfram Language or Mathematica needs to be started as root for this experiment. Complete the circuit by connecting the resistor from the blue - column to the GND pin.Ĭonnect the ribbon cable to the T-Cobbler and the Raspberry Pi correctly, and turn on your Raspberry Pi. The blue - column, with the flattened cathode side on the blue - column.

Connect 8 blue LEDs from each jumper wire row to To connect pins 4, 17, 27, 22, 18, 23, 24 and 25 to evenly spaced free rows lower on the breadboard. Set up the breadboard as shown: Plug the T-Cobbler into the breadboard with 13 pins in the E column and 13 pin in the G column.

A 400 ohm resistor (to prevent the LEDs from burning out).

To recreate this experiment you will need the following hardware (in addition to the Raspberry Pi itself): This post shows how to use the GPIO with the Wolfram Language on a Raspberry Pi.

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Wolfram raspberry pi