You won't be able to look away from the mesmerizing patterns created by this Adafruit CharliePlex LED Matrix Display Bonnet. This 16x8 LED display can be placed atop any Raspberry Pi computer with a 2x20 connector, for a beautiful, bright grid of 128 charlieplexed LEDs.
Raspberry Pi 5V supply used to power the LED matrix on the Bonnet.
Raspberry Pi ground connection for the Bonnet.
Raspberry Pi I2C data line used by the IS31FL3731 LED-matrix driver.
Raspberry Pi I2C clock line used by the IS31FL3731 LED-matrix driver.
I2C address-select jumper for the IS31FL3731 driver; public connector/control content, not a Raspberry Pi header pin.
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| 5V | power | Raspberry Pi 5V supply used to power the LED matrix on the Bonnet. | 5V supply, per Adafruit Learn: LEDs are powered from the 5V supply. | |
| GND | ground | Raspberry Pi ground connection for the Bonnet. | 0V ground reference. | |
| SDA | i2c | Raspberry Pi I2C data line used by the IS31FL3731 LED-matrix driver. | 3.3V logic, per Adafruit Learn: SDA/SCL logic level is still only 3.3V. | |
| SCL | i2c | Raspberry Pi I2C clock line used by the IS31FL3731 LED-matrix driver. | 3.3V logic, per Adafruit Learn: SDA/SCL logic level is still only 3.3V. |
I2C · SPI · 5V supply, per Adafruit Learn: LEDs are powered from the 5V supply. · 0V ground reference.
Confirm the data interface matches your host board.
Module pins: 5V, GND, SDA, SCL. Schematik maps them to your board in the app.
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| Address jumper | configuration | I2C address-select jumper for the IS31FL3731 driver; public connector/control content, not a Raspberry Pi header pin. |