Datasheet

Pinouts

This HAT uses a lot of pins to drive the RGB Matrix. You'll still have a couple left over but just be aware a majority are

in use by the matrix.

Unused GPIO pins include: RX, TX, 25, MOSI, MISO, SCLK, CE0, CE1, 19.

Pin 24 is free if you are not using a 1/32 scan (i.e. 64x64) matrix.

Pin 18 is free if using the “convenience” (vs “quality”) setting during installation.

The 1-Wire interface as enabled by raspi-config will interfere with the operation of the matrix! By default it uses pin 4. If

you are connecting any 1-Wire devices, specify a different pin (any of the above) in /boot/config.txt, for example:

I2C / RTC pins

The DS1307 Real Time Clock soldered onboard is connected to the I2C pins SDA and SCL - these can still be used for

other I2C sensors and devices as long as they are not on address 0x68

To use the Real Time Clock, a CR1220 3V lithium battery is required.

5V protection circuitry and backpower diode

LED matrix panels require 5V power and a lot of it! 5V 2A at a minimum and you can easily need a 5V 4A or 5V 10A

supply for big stretches of panels!

Each matrix has 64 pixels (16x32 or 32x32 panels) or 128 pixels (for the 32x64 panels) lit at one time. Each pixel can

draw up to 0.06 Amps each if on full white. The total max per panel is thus 64 * 0.06 = 3.95 Amps or 128 * 0.06 = 7.68

dtoverlay=w1-gpio gpiopin=19