Software I2C micropython implementation driver for 4 digit 8 segment LED display for Micropython devices such as ESP32 or Raspberry Pi.
source file: tm1650.py
from tm1650 import TM1650
disp = TM1650(sda_pin, scl_pin)
parameters:
sda_pin - esp32 pin number where display SDA pin is connected.
scl_pin - esp32 pin number where display SDA pin is connected.
function display_on()
function display_off()
function display_clear()
Display integer number with right align on display (without trailing zeroes). If number is out of range display shows Err.
function display_integer(num)
parameters:
num - integer number to display from range [-999,9999].
Display float number. If number is out of range display shows Err. Displayed number is always aligned to left side of display.
function display_float(num)
parameters:
num - float number to display from range [-999.0,9999.0]
First is displayed sign (if exists), integer part of number, decimal point (always displayed) and the fractional part. So if integer part of number has 4 digit including sign then fractional part won't be displayed
Example:
| parameter | output |
|---|---|
| -1 | -1.00 |
| 1.0 | 1.000 |
| -2.202 | -2.20 |
| 23.45 | 23.45 |
| -23.45 | -23.4 |
| -999.123 | -999. |
function display_string(s)
Display the first four characters of s.
Only certain characters can be displayed. If a character is not recognised it will display as "-". Add your own in SEGMENT_MAP.
from tm1650 import TM1650
SDA_PIN = 0
SCL_PIN = 1
disp = TM1650(SDA_PIN, SCL_PIN)
disp.display_on()
def scroll_string(s):
s = s.upper()
doublemsg = s + s
for i in range(len(s) - 3):
disp.display_string(doublemsg[i:4+i])
sleep(0.5)
scroll_string("Hello Python")
for i in range(10000):
disp.display_integer(i)
disp.display_clear()
disp.display_off()