MicroPico
Using Thonny
- Go to View > Files to browse the file system
- View > Plotter to view
printed numbers on a graph
Using MicroPico for VSCode
manualComDevicesetting should look something like/dev/cu.usbmodem101, can get it from Thonny
Change screen brightness
from picographics import PicoGraphics, DISPLAY_TUFTY_2040
display = PicoGraphics(display=DISPLAY_TUFTY_2040)
display.set_backlight(0.5) # 0.35 - 1.0
Auto adjust brightness
- call this in a loop
from machine import ADC, Pin
lux_pwr = Pin(27, Pin.OUT)
lux_pwr.value(1)
lux = ADC(26)
def adjust_brightness():
reading = lux.read_u16()
brightness = max(0.5, min(1.0, reading / 1000))
display.set_backlight(brightness)
Get display size
WIDTH, HEIGHT = display.get_bounds()
Drawing
Fill or clear the screen
from picographics import PicoGraphics, DISPLAY_TUFTY_2040
display = PicoGraphics(display=DISPLAY_TUFTY_2040)
BLACK = display.create_pen(0, 0, 0) # or any other color
display.set_pen(BLACK)
display.clear()
Text
from picographics import PicoGraphics, DISPLAY_TUFTY_2040
display = PicoGraphics(display=DISPLAY_TUFTY_2040)
WHITE = display.create_pen(255, 255, 255) # RGB color
display.set_pen(WHITE)
display.set_font('bitmap8')
# first two numbers are X, Y of top left of text
# third number is when the text starts wrapping (320 is the screen width, so this will span the screen - use -1 to disable text wrapping)
# fourth number is text size
display.text("Hello Tufty", 0, 0, 320, 4)
display.update() # needs to be called to flush the screen buffer
Fonts
-
Bitmap fonts:
bitmap6: all capsbitmap8: mixed case with more symbolsbitmap14_outline: outlined
-
Vector fonts:
sansgothiccursiveserif_italicserif
-
Vector fonts are aligned vertically to their midline
- at scale 1 the top edge of uppercase letters is 10px above the midline, and the baseline is 10px below
-
Use
display.set_thickness(n)to adjust the thickness of vector fonts
Shapes
display.line(x1, y1, x2, y2, thickness)
display.circle(x, y, radius)
display.rectangle(x, y, w, h)
display.triangle(x1, y1, x2, y2, x3, y3)
display.polygon([
(0, 10),
(20, 10),
(20, 0),
(30, 20),
(20, 30),
(20, 20),
(0, 20),
])
display.pixel(x, y)
display.pixel_span(x, y, length) # horizontal span of pixels
Images
Tip
The Tufty's screen resolution is 320x240. JPGs must not be progressive (uncheck in Advanced Options in GIMP when exporting)
from picographics import PicoGraphics, DISPLAY_TUFTY_2040
from jpegdec import JPEG, JPEG_SCALE_FULL
display = PicoGraphics(display=DISPLAY_TUFTY_2040)
j = JPEG(display)
j.open_file("jorts.jpg")
# X, Y, scale, dither
j.decode(0, 0, JPEG_SCALE_FULL, dither=True)
# you can draw multiple images
j.open_file("maru.jpg")
# all arguments are optional
j.decode(0, 100)
# don't forget this!
display.update()
- available scales are
JPEG_SCALE_FULL,JPEG_SCALE_HALF,JPEG_SCALE_QUARTERorJPEG_SCALE_EIGHTH: changes the size of the image
QR codes
import qrcode
WIDTH, HEIGHT = display.get_bounds()
QR_TEXT = "https://linktr.ee/fennyflametail"
QR_BACKGROUND = display.create_pen(46, 46, 46)
QR_FILL = display.create_pen(255, 255, 255)
QR_SQUARES = display.create_pen(0, 0, 0)
def measure_qr_code(size, code):
w, h = code.get_size()
module_size = int(size / w)
return module_size * w, module_size
def draw_qr_code(ox, oy, size, code):
size, module_size = measure_qr_code(size, code)
display.set_pen(QR_FILL)
display.rectangle(ox, oy, size, size)
display.set_pen(QR_SQUARES)
for x in range(size):
for y in range(size):
if code.get_module(x, y):
display.rectangle(ox + x * module_size, oy + y * module_size, module_size, module_size)
def show_qr():
display.set_pen(QR_BACKGROUND)
display.clear()
code = qrcode.QRCode()
code.set_text(QR_TEXT)
size, module_size = measure_qr_code(HEIGHT, code)
left = int((WIDTH // 2) - (size // 2))
top = int((HEIGHT // 2) - (size // 2))
draw_qr_code(left, top, HEIGHT, code)
Detect button presses
- Buttons are updated every 100ms
from pimoroni import Button
button_a = Button(7, invert=False)
button_b = Button(8, invert=False)
button_c = Button(9, invert=False)
button_up = Button(22, invert=False)
button_down = Button(6, invert=False)
while True:
if button_a.is_pressed:
# do stuff