
4-digit 7-segment common-cathode LED display, white, 0.56" digit height, 30 mcd. Includes decimal points per digit and a center colon wire for time display. Drive with a 74HC595 or NPN transistors; max 20 mA per segment, ~120 mA per digit at full brightness.
Shared seven-segment LED segment A anode; Adafruit describes the raw display as multiplexed common-cathode and the linked Luckylight datasheet maps segment A to pin 13.
Shared seven-segment LED segment B anode; datasheet maps segment B to pin 9.
Shared seven-segment LED segment C anode; datasheet maps segment C to pin 4.
Shared seven-segment LED segment D anode; datasheet maps segment D to pin 2.
Shared seven-segment LED segment E anode; datasheet maps segment E to pin 1.
I2C · SPI · Single data line · 5 V · 3.3 – 5 V · Bare
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Shared seven-segment LED segment F anode; datasheet maps segment F to pin 12.
Shared seven-segment LED segment G anode; datasheet maps segment G to pin 5.
Shared decimal-point LED segment anode; datasheet maps DP to pin 3.
Centre colon LED inputs D5/D6; datasheet maps D5/D6 to pin 8.
Common cathode for digit 1; datasheet marks pin 14 as DIG.1 COM.
Common cathode for digit 2; datasheet marks pin 11 as DIG.2 COM.
Common cathode for digit 3; datasheet marks pin 10 as DIG.3 COM.
Common cathode for digit 4; datasheet marks pin 6 as DIG.4 COM.
Common cathode for centre colon LEDs; datasheet marks pin 7 as COM between DIG.2 and DIG.3.
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| A | 13 | segment | Shared seven-segment LED segment A anode; Adafruit describes the raw display as multiplexed common-cathode and the linked Luckylight datasheet maps segment A to pin 13. | |
| B | 9 | segment | Shared seven-segment LED segment B anode; datasheet maps segment B to pin 9. | |
| C | 4 | segment | Shared seven-segment LED segment C anode; datasheet maps segment C to pin 4. | |
| D | 2 | segment | Shared seven-segment LED segment D anode; datasheet maps segment D to pin 2. | |
| E | 1 | segment | Shared seven-segment LED segment E anode; datasheet maps segment E to pin 1. | |
| F | 12 | segment | Shared seven-segment LED segment F anode; datasheet maps segment F to pin 12. | |
| G | 5 | segment | Shared seven-segment LED segment G anode; datasheet maps segment G to pin 5. | |
| DP | 3 | segment | Shared decimal-point LED segment anode; datasheet maps DP to pin 3. | |
| D5 / D6 colon LEDs | 8 | segment | Centre colon LED inputs D5/D6; datasheet maps D5/D6 to pin 8. | |
| DIG.1 COM | 14 | common cathode | Common cathode for digit 1; datasheet marks pin 14 as DIG.1 COM. | |
| DIG.2 COM | 11 | common cathode | Common cathode for digit 2; datasheet marks pin 11 as DIG.2 COM. | |
| DIG.3 COM | 10 | common cathode | Common cathode for digit 3; datasheet marks pin 10 as DIG.3 COM. | |
| DIG.4 COM | 6 | common cathode | Common cathode for digit 4; datasheet marks pin 6 as DIG.4 COM. | |
| Colon COM | 7 | common cathode | Common cathode for centre colon LEDs; datasheet marks pin 7 as COM between DIG.2 and DIG.3. |
"Shake" 8x8 LED Matrix