Pinouts

5V Power

RGB matricies are powered from 5V. We recommend using a 5V 2A or 5V 4A power pack to provide power to your Feather+Matrix

5V 2A (2000mA) switching power supply - UL Listed

PRODUCT ID: 276
This is a FCC/CE certified and UL listed power supply. Need a lot of 5V power? This switching supply gives a clean regulated 5V output at up to 2000mA. 110 or 240 input, so it works in...
$7.95
IN STOCK

5V 4A (4000mA) switching power supply - UL Listed

PRODUCT ID: 1466
Need a lot of 5V power? This switching supply gives a clean regulated 5V output at up to 4 Amps (4000mA). 110 or 240 input, so it works in any country. The plugs are "US...
$14.95
IN STOCK

You can plug in the 5V adapter directly into the 2.1mm plug shown on the left, and the output to the matrix is available on the right. In between it goes through a P-FET 'ideal diode' which will protect the circuitry if you plug in the power backwards.

Feather Power

The 5V power input is also regulated to 3.3V and provided to the Feather 3.3V and Ground pads. This means that the Feather will 'self power' naturally from the 5V adapter even if USB or battery is not plugged in.

Data Pins

RGB Matricies require many data pins to push data out. We've picked what we think are a good range of pins that let you use I2C, SPI and two analog pins. There's not a lot of pins left over, but you can still add other wings and sensors if you need!

Here are the following 'default' pinouts:

  • CLK on  #13
  • LAT  on #0 (a.k.a RX)
  • OE  on #1 (a.k.a TX)
  • Address A on A5
  • Address B on A4
  • Address C on A3
  • Address D on A2
  • R1, G1, B1, R2, G2, B2 on 6, 5, 9, 11, 10, 12 in that order

That leaves A0, A1, SCK, MOSI, MISO, SDA, SCL available. M0 and M4 Feathers with built in SPI devices like SD cards, Bluetooth or WiFi will still work since the CS pins are not exposed.

This guide was first published on Aug 22, 2018. It was last updated on Aug 22, 2018. This page (Pinouts) was last updated on Jun 17, 2019.