4-Digit 7-Segment LED Matrix Display FeatherWing
4-digit 7-segment LED display add-on in FeatherWing form factor, compatible with all Feather boards.
Pinout
- 3V
FeatherWing power and logic rail. Adafruit Learn states the LED matrix uses only the 3V and GND pins for power and logic.
Type · powerVoltage · 3.3V Feather rail; source notes current draw is about 40 mA for most uses. - GND
Ground return for the FeatherWing power and logic connection. Adafruit Learn states the LED matrix uses only the 3V and GND pins for power and logic.
Type · ground - SDA
I2C data connection to the HT16K33 LED driver. Adafruit Learn states all LED control is done over I2C and SDA must be connected.
Type · signalVoltage · 3.3V logic on Feather I2C bus. - SCL
I2C clock connection to the HT16K33 LED driver. Adafruit Learn states all LED control is done over I2C and SCL must be connected.
Type · signalVoltage · 3.3V logic on Feather I2C bus. - A0
Address solder jumper. Adafruit Learn states A0 sets the lowest I2C address bit with value 1 when shorted.
Start wiring
Shield
Confirm the data interface matches your host board.
Module pins: 3V, GND, SDA, SCL. Schematik maps them to your board in the app.
Add-ons
271 other optionsAbout 270 add-ons across Pi HATs, Arduino shields, and FeatherWings. The same function — motor control, PoE, display — usually ships once per host connector family. Get the host board right first.
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