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https://github.com/mcauser/micropython-tm1637
MicroPython driver for TM1637 quad 7-segment LED modules
https://github.com/mcauser/micropython-tm1637
7-segment esp8266 grove micropython tm1637 wemos-d1-mini
Last synced: 26 days ago
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MicroPython driver for TM1637 quad 7-segment LED modules
- Host: GitHub
- URL: https://github.com/mcauser/micropython-tm1637
- Owner: mcauser
- License: mit
- Created: 2016-12-16T11:50:54.000Z (almost 8 years ago)
- Default Branch: master
- Last Pushed: 2023-07-04T20:38:00.000Z (over 1 year ago)
- Last Synced: 2024-10-01T05:09:53.192Z (about 1 month ago)
- Topics: 7-segment, esp8266, grove, micropython, tm1637, wemos-d1-mini
- Language: Python
- Homepage:
- Size: 2 MB
- Stars: 188
- Watchers: 10
- Forks: 82
- Open Issues: 4
-
Metadata Files:
- Readme: README.md
- License: LICENSE.txt
Awesome Lists containing this project
- awesome-mpython - micropython-tm1637 - Driver for TM1637 quad 7-segment LED modules. (精选驱动库 / 显示类)
- awesome-micropython - micropython-tm1637 - Driver for TM1637 quad 7-segment LED modules. (Libraries / Display)
README
# MicroPython TM1637
A MicroPython library for quad 7-segment LED display modules using the TM1637 LED driver.
### Installation
Using mip via mpremote:
```bash
$ mpremote mip install github:mcauser/micropython-tm1637
```
Using mip directly on a WiFi capable board:
```python
>>> import mip
>>> mip.install("github:mcauser/micropython-tm1637")
```
Manual installation:
Copy `tm1637.py` to the root directory of your device.
## Examples
**Basic usage**
```python
import tm1637
from machine import Pin
tm = tm1637.TM1637(clk=Pin(5), dio=Pin(4))
# all LEDS on "88:88"
tm.write([127, 255, 127, 127])
# all LEDS off
tm.write([0, 0, 0, 0])
# show "0123"
tm.write([63, 6, 91, 79])
# show "COOL"
tm.write([0b00111001, 0b00111111, 0b00111111, 0b00111000])
# show "HELP"
tm.show('help')
# display "dEAd", "bEEF"
tm.hex(0xdead)
tm.hex(0xbeef)
# show "12:59"
tm.numbers(12, 59)
# show "-123"
tm.number(-123)
# show temperature '24*C'
tm.temperature(24)
```
For more detailed examples, see [tm1637_test.py](tm1637_test.py)
# Seven Segment Font
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
G | 0b00111101 | 0x3D | 61
H | 0b01110110 | 0x76 | 118
I | 0b00000110 | 0x06 | 6
J | 0b00011110 | 0x1E | 30
K | 0b01110110 | 0x76 | 118
L | 0b00111000 | 0x38 | 56
M | 0b01010101 | 0x55 | 85
n | 0b01010100 | 0x54 | 84
O | 0b00111111 | 0x3F | 63
P | 0b01110011 | 0x73 | 115
q | 0b01100111 | 0x67 | 103
r | 0b01010000 | 0x50 | 80
S | 0b01101101 | 0x6D | 109
t | 0b01111000 | 0x78 | 120
U | 0b00111110 | 0x3E | 62
v | 0b00011100 | 0x1C | 28
W | 0b00101010 | 0x2A | 42
X | 0b01110110 | 0x76 | 118
y | 0b01101110 | 0x6E | 110
Z | 0b01011011 | 0x5B | 91
blank | 0b00000000 | 0x00 | 0
\- | 0b01000000 | 0x40 | 64
\* | 0b01100011 | 0x63 | 99
# Methods
Get or set brightness.
```python
brightness(val=None)
```
Write one or more segments at a given offset.
```python
write(segments, pos=0)
```
Convert a single hex digit (0x00-0x0f) to a segment.
```python
encode_digit(digit)
```
Convert a string to a list of segments.
```python
encode_string(string)
```
Convert a single character to a segment.
```python
encode_char(char)
```
Display a number in hexadecimal format 0000 through FFFF.
```python
hex(val)
```
Display a number -999 through 9999, right aligned.
```python
number(num)
```
Display 2 independent numbers on either side of the (optional) colon, with leading zeros.
```python
numbers(num1, num2, colon=True)
```
Display a temperature -9 through 99 followed by degrees C.
```python
temperature(num)
```
Show a string on the display.
Shorthand for write(encode_string()).
Limited to first 4 characters.
```python
show(string, colon=False)
```
Display a string on the display, scrolling from the right to left, speed adjustable.
String starts off-screen and scrolls until off-screen at 4 FPS by default.
```python
scroll(string, delay=250)
```
## Modules
* [Grove 4 Digit Display](https://www.seeedstudio.com/Grove-4-Digit-Display.html)
* [RobotDyn 4-digit LED Display Tube](https://www.aliexpress.com/item/32795908218.html)
* [RobotDyn 6-digit LED Display Tube](https://www.aliexpress.com/item/32800127265.html)
* [Generic TM1637 LED Display Module](https://www.aliexpress.com/item/32657932650.html)
For example, the [Grove - 4 Digit Display module](http://wiki.seeed.cc/Grove-4-Digit_Display/)
## Connections
`CLK` and `DIO` are bit-banged. You can use any GPIO.
4 Digit Display | TinyPICO | Pi Pico | WeMos D1 Mini
--------------- | ---------| ------- | -------------
CLK | IO18 | IO27 | D1 (GPIO5)
DIO | IO23 | IO26 | D2 (GPIO4)
VCC | 3V3 | 3V3 | 3V3/5V
GND | GND | GND | G
## Links
* [micropython.org](http://micropython.org)
* [TM1637 datasheet](http://www.titanmec.com/index.php/en/project/download/id/302.html)
* [Titan Micro TM1637 product page](http://www.titanmec.com/index.php/en/project/view/id/302.html)
* [Nokia 5110 version](https://github.com/mcauser/MicroPython-ESP8266-Nokia-5110-Quad-7-segment)
* [BBC micro:bit version](https://github.com/mcauser/microbit-tm1637)
## License
Licensed under the [MIT License](http://opensource.org/licenses/MIT).