A MicroPython library for the quad 7-segment LED display modules based on the TM1637 LED driver.
For example, the Grove - 4 Digit Display module
They are called 7-segment displays as there are 7 LEDs for each digit (segment). One byte (7 lower bits) for each segment. The 8th bit (MSB) is for the colon and only on the 2nd segment.
A
---
F | | B *
-G- H (on 2nd segment)
E | | C *
---
D
HGFEDCBA
0b01101101 = 0x6D = 109 = show "5"
| Display | Bin | Hex | Dec |
|---|---|---|---|
| 0 | 0b00111111 | 0x3F | 63 |
| 1 | 0b00000110 | 0x06 | 6 |
| 2 | 0b01011011 | 0x5B | 91 |
| 3 | 0b01001111 | 0x4F | 79 |
| 4 | 0b01100110 | 0x66 | 102 |
| 5 | 0b01101101 | 0x6D | 109 |
| 6 | 0b01111101 | 0x7D | 125 |
| 7 | 0b00000111 | 0x07 | 7 |
| 8 | 0b01111111 | 0x7F | 127 |
| 9 | 0b01101111 | 0x6F | 111 |
| A | 0b01110111 | 0x77 | 119 |
| b | 0b01111100 | 0x7C | 124 |
| C | 0b00111001 | 0x39 | 57 |
| d | 0b01011110 | 0x5E | 94 |
| E | 0b01111001 | 0x79 | 121 |
| F | 0b01110001 | 0x71 | 113 |
| blank | 0b00000000 | 0x00 | 0 |
-
| 0b01000000 | 0x40 | 64
- WeMos D1 Mini $4.00 USD
- Grove 4 Digit Display $5.90 USD
- Grove Male Jumper Cable $2.90 USD
| WeMos D1 Mini | 4 Digit Display |
|---|---|
| D1 (GPIO5) | CLK |
| D2 (GPIO4) | DIO |
| 3V3 (or 5V) | VCC |
| G | GND |