https://github.com/mcauser/micropython-esp8266-nokia-5110-quad-7-segment
MicroPython library for emulating quad 7-segment LED displays on a Nokia 5110 with PCD8544 driver
https://github.com/mcauser/micropython-esp8266-nokia-5110-quad-7-segment
7-segment esp8266 micropython nokia-5110 pcd8544 wemos-d1-mini
Last synced: 8 months ago
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MicroPython library for emulating quad 7-segment LED displays on a Nokia 5110 with PCD8544 driver
- Host: GitHub
- URL: https://github.com/mcauser/micropython-esp8266-nokia-5110-quad-7-segment
- Owner: mcauser
- License: mit
- Created: 2017-03-13T15:40:02.000Z (over 9 years ago)
- Default Branch: master
- Last Pushed: 2018-08-07T16:12:08.000Z (almost 8 years ago)
- Last Synced: 2025-05-01T08:46:28.281Z (about 1 year ago)
- Topics: 7-segment, esp8266, micropython, nokia-5110, pcd8544, wemos-d1-mini
- Language: Python
- Size: 813 KB
- Stars: 4
- Watchers: 2
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE.txt
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README
# MicroPython ESP8266 Nokia 5110 Quad 7-segment
A MicroPython library for emulating a quad 7-segment LED display modules using a Nokia 5110 display with PCD8544 driver.
The 84x48 PCD8544 buffer:
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 decimal point.
```
A
---
F | | B
-G-
E | | C
--- * H
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
## Parts
* [WeMos D1 Mini](http://www.aliexpress.com/store/product/D1-mini-Mini-NodeMcu-4M-bytes-Lua-WIFI-Internet-of-Things-development-board-based-ESP8266/1331105_32529101036.html) $4.00 USD
* [Nokia 5110 module](http://www.aliexpress.com/item/1pc-Lowest-Price-84-48-84x84-LCD-Module-White-backlight-adapter-PCB-for-Nokia-5110-Newest/32401396134.html) $2.10 USD
* [Breadboard 400 point](http://www.aliexpress.com/item/Quality-mini-bread-board-breadboard-8-5CM-x-5-5CM-400-holes/32347239015.html) $1.02 USD
* [Jumper wire](http://www.aliexpress.com/item/Free-Shipping-140pcs-in-one-package-convenient-New-Solderless-Flexible-Breadboard-Jumper-wires-Cables-HOT-Sale/2044172287.html) $1.72 USD
## Connections
WeMos D1 Mini | Nokia 5110 PCD8544 LCD
------------- | ---------------
D3 (GPIO0) | 0 RST
D4 (GPIO2) | 1 CE
D8 (GPIO15) | 2 DC
D7 (GPIO13) | 3 Din
D5 (GPIO14) | 4 Clk
3V3 | 5 Vcc
D6 (GPIO12) | 6 BL
G | 7 Gnd
## Links
* [MicroPython PCD8544 Driver](https://github.com/mcauser/micropython-pcd8544)
* [WeMos D1 Mini](https://wiki.wemos.cc/products:d1:d1_mini)
* [micropython.org](http://micropython.org)
* [TM1637 version](https://github.com/mcauser/micropython-tm1637)
## License
Licensed under the [MIT License](http://opensource.org/licenses/MIT).