I’ve got OLED 1.12" and BME280 in a breakout garden on a Pi3a.
All good, with the BME280 temp reading on the OLED.
But, it’s such tiny text, how on earth do you get a larger size displayed?
I tried changing SINCLAIR_FONT to LCD_FONT, but no change. I can’t see where you change text size.
And how do you prevent it from scrolling?
Thanks!
On my Pi 400, I have two of the SPI Color LCD Breakouts.
In my PY file I have the following.
from PIL import ImageFont
from fonts.ttf import RobotoMedium as UserFont
# Fonts
font_sm = ImageFont.truetype(UserFont, 35)
font_md = ImageFont.truetype(UserFont, 50)
font_lg = ImageFont.truetype(UserFont, 55)
then I do a
draw.text((40, 120), ("CPU Usage"), font=font_sm, fill=colour)
Fonts installed OK
show_message(device, str(t), fill="white", font=font_lg)
Gives me an error: TypeError: ‘FreeTypeFont’ object is not subscriptable
(and also with font small and font medium)
It may help to know that the script is launched from terminal like this:
python3 all-values-3.py --display sh1106 --height 128 --rotate 2 --interface spi --gpio-data-command 9 --spi-device 1
This is above my skill level I’m afraid. The code I posted above isn’t my creation. Just something I new I had on hand, and had used. I don’t know what that error message means.
This is the full file that I’m using on my Pi 400, dual color SPI LCD’s.
#!/usr/bin/env python3
import os
import sys
import time
import datetime
import ST7789
import psutil
from trackball import TrackBall
trackball = TrackBall(interrupt_pin=4)
from os import popen
from PIL import Image
from PIL import ImageDraw
from PIL import ImageFont
from fonts.ttf import RobotoMedium as UserFont
# Fonts
font_sm = ImageFont.truetype(UserFont, 35)
font_md = ImageFont.truetype(UserFont, 50)
font_lg = ImageFont.truetype(UserFont, 55)
# Initialise the left LCD
disp_left = ST7789.ST7789(
port=0,
cs=0,
dc=9,
#backlight=19,
rotation=90,
spi_speed_hz=80 * 1000 * 1000,
)
disp_left.begin()
# Initialise the right LCD
disp_right = ST7789.ST7789(
port=0,
cs=1,
dc=9,
#backlight=19,
rotation=90,
spi_speed_hz=80 * 1000 * 1000,
)
disp_right.begin()
WIDTH = 240
HEIGHT = 240
img = Image.new('RGB', (WIDTH, HEIGHT), color=(255, 0, 0))
draw = ImageDraw.Draw(img)
def get_cpu_temp():
with open("/sys/class/thermal/thermal_zone0/temp", "r") as f:
temp = f.read()
temp = int(temp) / 1000.0
return temp
cpu_temps = [get_cpu_temp()] * 5
colour = (255, 255, 255)
while True:
img = Image.new('RGB', (WIDTH, HEIGHT), color=(255, 0, 0))
draw = ImageDraw.Draw(img)
now = datetime.datetime.now()
date_string = now.strftime("%b %-d")
draw.text((60, 15), date_string, font=font_sm, fill=colour)
time_string = now.strftime("%-I:%M%p")
draw.text((20, 60), time_string, font=font_md, fill=colour)
draw.text((40, 120), ("CPU Temp"), font=font_sm, fill=colour)
cpu_temp = get_cpu_temp()
temp_string = f"{cpu_temp:.0f}°C"
draw.text((60, 160), temp_string, font=font_lg, fill=colour)
disp_left.display(img)
img = Image.new('RGB', (WIDTH, HEIGHT), color=(255, 0, 0))
draw = ImageDraw.Draw(img)
draw.text((40, 15), ("CPU Speed"), font=font_sm, fill=colour)
str=popen("vcgencmd measure_clock arm").read()
str = str[str.find("=")+1:-7]
freq_string = f"{str}mhz"
draw.text((5, 55), freq_string, font=font_lg, fill=colour)
draw.text((40, 120), ("CPU Usage"), font=font_sm, fill=colour)
str = psutil.cpu_percent()
usage_string = f"{str}%"
draw.text((55, 160), usage_string, font=font_lg, fill=colour)
disp_right.display(img)
trackball.set_rgbw(255, 70, 0, 0)
time.sleep(1)
'''
sudp pip3 install st7789
sudo pip3 install fonts
sudo pip3 install font-roboto
run crontab -e
add
@reboot python3 /home/pi/pi-info.py
'''
Thanks, but sadly yours is just too different to mine.
Hopefully someone with the same (monochrome 1.12" OLED SPI) device will come along and be able to help. :-/
The only OLED I have in use, is an i2c variant, and using Micro Python (Pimoroni Pico Graphics).
This one is on a Pi 3a via breakout garden
My .py. All good except the output being too small and scrolling away!
#!/usr/bin/env python
### python3 all-values-3.py --display sh1106 --height 128 --rotate 2 --interface spi --gpio-data-command 9 --spi-device 1
import time
import datetime
try:
from smbus2 import SMBus
except ImportError:
from smbus import SMBus
from bme280 import BME280
import sys
import time
from demo_opts import get_device
from luma.core.legacy import show_message ### Where is luma.core.legacy ?
from luma.core.legacy.font import proportional, tolerant, LCD_FONT, ATARI_FONT
# Initialise the BME280
bus = SMBus(1)
bme280 = BME280(i2c_dev=bus)
temperature = bme280.get_temperature()
print("Initial junk reading, ignore: " + str(temperature))
print("Short pause to stabalise sensor....")
time.sleep(0.5)
print("OK! Here we go.")
print(" ")
while True:
now = datetime.datetime.now()
timestamp = str(now.strftime("%Y%m%d %H-%M-%S "))
temperature = bme280.get_temperature()
t = "{:0.2f} C".format(temperature)
#print (t)
pressure = bme280.get_pressure()
humidity = bme280.get_humidity()
device = get_device()
#print(device)
show_message(device, str(t), fill="white", font=proportional(LCD_FONT)) #### Bigger font! & Stop scrolling! ####
print((str(now.strftime("%d-%b %H-%M-%S ") +" Dungeon temperature: " + '{:05.2f}*C {:05.2f}hPa {:05.2f}%'.format(temperature, pressure, humidity))))
time.sleep(10) ### Slow this down when working properly!
# Launch from terminal with
# pi@pi-3a-tester:~/luma.examples/examples $ python3 all-values-3.py
# --display sh1106
# --height 128
# --rotate 2
# --interface spi
# --gpio-data-command 9
# --spi-device 1
I have a ton of Breakout Garden stuff on the go here, Pi and Pico. I only just recently tried an OLED. I went i2c because it made it easier to hook it up to my Inventor 2040W. If SPI had been an option I would have went SPI Color LCD.
I don’t have anything on hand to try your code on, or I would.