Hi there - I am making a radio with a Flotilla interface in Python. I have got the Touch module working to select 4 preset radio stations and the rotary knob working as a volume control. I want to add some visual feedback to show which station is selected - is it possible in the Python API either to latch the LEDs on the Touch switches or to send text / numbers to the Matrix display as you seem to be able to do in Rockpool? (I can address individual pixels on the Matrix using Python, but can I just send it numbers?) Thank you!
Hi,
if you remove all of my flim-flam bells and whistles from the following code you should be able to get scrolling messages going on the matrix!
(I hope the formatting is OK, can’t upload a file at the moment!)
Cheers,
Neil
#!/usr/bin/env python
import sys
import time
import flotilla
if len(sys.argv) == 1: sys.argv[1:] = ["0"]
print("""
Attempting to scroll a message on a matrix module...
Press CTRL+C to exit.
""")
# Looks for the dock, and all of the modules we need
# attached to the dock so we can talk to them.
dock = flotilla.Client()
print("Client connected...")
while not dock.ready: pass
print("Finding modules...") matrix = dock.first(flotilla.Matrix)
touch = dock.first(flotilla.Touch)
dial = dock.first(flotilla.Dial)
slider = dock.first(flotilla.Slider)
number = dock.first(flotilla.Number)
if matrix is None:
print("No Matrix module found...")
dock.stop()
sys.exit(1)
else:
print("Found. Running...")
state = True
matrix_font = [
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x18,0x00,0x18,0x18,0x3c,0x3c,0x18],
[0x00,0x00,0x00,0x00,0x00,0x00,0x6c,0x6c],
[0x00,0x6c,0x6c,0xfe,0x6c,0xfe,0x6c,0x6c],
[0x00,0x30,0xf8,0x0c,0x78,0xc0,0x7c,0x30],
[0x00,0xc6,0x66,0x30,0x18,0xcc,0xc6,0x00],
[0x00,0x76,0xcc,0xdc,0x76,0x38,0x6c,0x38],
[0x00,0x00,0x00,0x00,0x00,0xc0,0x60,0x60],
[0x00,0x18,0x30,0x60,0x60,0x60,0x30,0x18],
[0x00,0x60,0x30,0x18,0x18,0x18,0x30,0x60],
[0x00,0x00,0x66,0x3c,0xff,0x3c,0x66,0x00],
[0x00,0x00,0x30,0x30,0xfc,0x30,0x30,0x00],
[0x60,0x30,0x30,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0xfc,0x00,0x00,0x00],
[0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00],
[0x00,0x80,0xc0,0x60,0x30,0x18,0x0c,0x06],
[0x00,0x7c,0xe6,0xf6,0xde,0xce,0xc6,0x7c],
[0x00,0xfc,0x30,0x30,0x30,0x30,0x70,0x30],
[0x00,0xfc,0xcc,0x60,0x38,0x0c,0xcc,0x78],
[0x00,0x78,0xcc,0x0c,0x38,0x0c,0xcc,0x78],
[0x00,0x1e,0x0c,0xfe,0xcc,0x6c,0x3c,0x1c],
[0x00,0x78,0xcc,0x0c,0x0c,0xf8,0xc0,0xfc],
[0x00,0x78,0xcc,0xcc,0xf8,0xc0,0x60,0x38],
[0x00,0x30,0x30,0x30,0x18,0x0c,0xcc,0xfc],
[0x00,0x78,0xcc,0xcc,0x78,0xcc,0xcc,0x78],
[0x00,0x70,0x18,0x0c,0x7c,0xcc,0xcc,0x78],
[0x00,0x30,0x30,0x00,0x00,0x30,0x30,0x00],
[0x60,0x30,0x30,0x00,0x00,0x30,0x30,0x00],
[0x00,0x18,0x30,0x60,0xc0,0x60,0x30,0x18],
[0x00,0x00,0xfc,0x00,0x00,0xfc,0x00,0x00],
[0x00,0x60,0x30,0x18,0x0c,0x18,0x30,0x60],
[0x00,0x30,0x00,0x30,0x18,0x0c,0xcc,0x78],
[0x00,0x78,0xc0,0xde,0xde,0xde,0xc6,0x7c],
[0x00,0xcc,0xcc,0xfc,0xcc,0xcc,0x78,0x30],
[0x00,0xfc,0x66,0x66,0x7c,0x66,0x66,0xfc],
[0x00,0x3c,0x66,0xc0,0xc0,0xc0,0x66,0x3c],
[0x00,0xf8,0x6c,0x66,0x66,0x66,0x6c,0xf8],
[0x00,0xfe,0x62,0x68,0x78,0x68,0x62,0xfe],
[0x00,0xf0,0x60,0x68,0x78,0x68,0x62,0xfe],
[0x00,0x3e,0x66,0xce,0xc0,0xc0,0x66,0x3c],
[0x00,0xcc,0xcc,0xcc,0xfc,0xcc,0xcc,0xcc],
[0x00,0x78,0x30,0x30,0x30,0x30,0x30,0x78],
[0x00,0x78,0xcc,0xcc,0x0c,0x0c,0x0c,0x1e],
[0x00,0xe6,0x66,0x6c,0x78,0x6c,0x66,0xe6],
[0x00,0xfe,0x66,0x62,0x60,0x60,0x60,0xf0],
[0x00,0xc6,0xc6,0xd6,0xfe,0xfe,0xee,0xc6],
[0x00,0xc6,0xc6,0xce,0xde,0xf6,0xe6,0xc6],
[0x00,0x38,0x6c,0xc6,0xc6,0xc6,0x6c,0x38],
[0x00,0xf0,0x60,0x60,0x7c,0x66,0x66,0xfc],
[0x00,0x1c,0x78,0xdc,0xcc,0xcc,0xcc,0x78],
[0x00,0xe6,0x66,0x6c,0x7c,0x66,0x66,0xfc],
[0x00,0x78,0xcc,0x1c,0x70,0xe0,0xcc,0x78],
[0x00,0x78,0x30,0x30,0x30,0x30,0xb4,0xfc],
[0x00,0xfc,0xcc,0xcc,0xcc,0xcc,0xcc,0xcc],
[0x00,0x30,0x78,0xcc,0xcc,0xcc,0xcc,0xcc],
[0x00,0xc6,0xee,0xfe,0xd6,0xc6,0xc6,0xc6],
[0x00,0xc6,0x6c,0x38,0x38,0x6c,0xc6,0xc6],
[0x00,0x78,0x30,0x30,0x78,0xcc,0xcc,0xcc],
[0x00,0xfe,0x66,0x32,0x18,0x8c,0xc6,0xfe],
[0x00,0x78,0x60,0x60,0x60,0x60,0x60,0x78],
[0x00,0x02,0x06,0x0c,0x18,0x30,0x60,0xc0],
[0x00,0x78,0x18,0x18,0x18,0x18,0x18,0x78],
[0x00,0x00,0x00,0x00,0xc6,0x6c,0x38,0x10],
[0xff,0x00,0x00,0x00,0x00,0x00,0x00,0x00],
[0x00,0x00,0x00,0x00,0x00,0x18,0x30,0x30],
[0x00,0x76,0xcc,0x7c,0x0c,0x78,0x00,0x00],
[0x00,0xdc,0x66,0x66,0x7c,0x60,0x60,0xe0],
[0x00,0x78,0xcc,0xc0,0xcc,0x78,0x00,0x00],
[0x00,0x76,0xcc,0xcc,0x7c,0x0c,0x0c,0x1c],
[0x00,0x78,0xc0,0xfc,0xcc,0x78,0x00,0x00],
[0x00,0xf0,0x60,0x60,0xf0,0x60,0x6c,0x38],
[0xf8,0x0c,0x7c,0xcc,0xcc,0x76,0x00,0x00],
[0x00,0xe6,0x66,0x66,0x76,0x6c,0x60,0xe0],
[0x00,0x78,0x30,0x30,0x30,0x70,0x00,0x30],
[0x78,0xcc,0xcc,0x0c,0x0c,0x0c,0x00,0x0c],
[0x00,0xe6,0x6c,0x78,0x6c,0x66,0x60,0xe0],
[0x00,0x78,0x30,0x30,0x30,0x30,0x30,0x70],
[0x00,0xc6,0xd6,0xfe,0xfe,0xcc,0x00,0x00],
[0x00,0xcc,0xcc,0xcc,0xcc,0xf8,0x00,0x00],
[0x00,0x78,0xcc,0xcc,0xcc,0x78,0x00,0x00],
[0xf0,0x60,0x7c,0x66,0x66,0xdc,0x00,0x00],
[0x1e,0x0c,0x7c,0xcc,0xcc,0x76,0x00,0x00],
[0x00,0xf0,0x60,0x66,0x76,0xdc,0x00,0x00],
[0x00,0xf8,0x0c,0x78,0xc0,0x7c,0x00,0x00],
[0x00,0x18,0x34,0x30,0x30,0x7c,0x30,0x10],
[0x00,0x76,0xcc,0xcc,0xcc,0xcc,0x00,0x00],
[0x00,0x30,0x78,0xcc,0xcc,0xcc,0x00,0x00],
[0x00,0x6c,0xfe,0xfe,0xd6,0xc6,0x00,0x00],
[0x00,0xc6,0x6c,0x38,0x6c,0xc6,0x00,0x00],
[0xf8,0x0c,0x7c,0xcc,0xcc,0xcc,0x00,0x00],
[0x00,0xfc,0x64,0x30,0x98,0xfc,0x00,0x00],
[0x00,0x1c,0x30,0x30,0xe0,0x30,0x30,0x1c],
[0x00,0x18,0x18,0x18,0x00,0x18,0x18,0x18],
[0x00,0xe0,0x30,0x30,0x1c,0x30,0x30,0xe0],
[0x00,0x00,0x00,0x00,0x00,0x00,0xdc,0x76],
[0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00] ]
try:
rot = int(str(sys.argv[1]))
pos = 7
charcode = 0
prevcode = 0
chind = 0
currchar = 0
offset = 0
speed = 1
brightness = 10
msg = "Pimoroni Flotilla matrix module scrolling message with controls for brightness, speed and rotation! "
while True:
charcode = ord(msg[chind])
if chind:
prevcode = ord(msg[chind-1])
else:
prevcode = 32
for module in dock.available.values():
if module.is_a(flotilla.Touch):
touch = module
if touch.one:
rot = 0
if touch.two:
rot = 90
if touch.three:
rot = 180
if touch.four:
rot = 270
if module.is_a(flotilla.Slider):
slider = module
speed = slider.position/1023.0*10.0
speed = max(speed,1.0)
if module.is_a(flotilla.Dial):
dial = module
brightness = max(int((dial.position/1023.0)*100.0),1)
if module.is_a(flotilla.Matrix):
matrix.clear()
matrix.rotation(rot)
matrix.set_brightness(brightness)
for row in range(0, 8):
for col in range(0, 8):
if col+pos > 7:
currchar = prevcode
offset = col+pos-8
else:
currchar = charcode
offset = col+pos
if matrix_font[currchar][row] & (1 << offset):
if rot == 90 or rot == 270:
matrix.set_pixel(7-col,7-row,1)
else:
matrix.set_pixel(7-row, 7-col, 1)
matrix.update();
if pos > 0:
pos -= 1
else:
pos = 7
if chind < len(msg)-1:
chind += 1
else:
chind = 0
if module.is_a(flotilla.Number):
number = module
if state:
number.set_current_time()
else:
number.set_string("T1ME")
number.set_brightness(brightness)
#number.set_apostrophe(1)
number.update()
#state = not state
time.sleep(0.1/speed)
except KeyboardInterrupt:
if matrix:
matrix.clear()
matrix.update()
if number:
number.clear()
number.set_colon(0)
number.set_apostrophe(0)
number.update()
print("Stopping Flotilla...")
dock.stop()
1 Like
That looks awesome! Thank you, I will try this later on :)
It works! Thank you so much. Where did you get the alphabet from? I’m thinking of perhaps sending just the 4 numbers I need directly as static images or perhaps little custom graphics, so I’ll need to figure out a way of generating the hex numbers…
I shamelessly stole the alphabet from the Pimoroni rockpool javascript code and converted it to python. Everything should look exactly the as Gadgetoid (Phil Howard) programmed it!
1 Like
Thanks! I am trying just to display single non-scrolling characters and have sort of got it to work but the letters are offset 1 pixel to the left, wrapped around the display. Admittedly I have no idea what I’m doing… code looks a bit like this:
foo = [0x00,0x78,0xcc,0x0c,0x38,0x0c,0xcc,0x78]
pos = 7
offset = 0
(lines omitted)
if touch.three:
matrix.clear()
for row in range(0, 8):
for col in range(0, 8):
if col+pos > 7:
offset = col+pos-8
else:
offset = col+pos
if foo[row] & (1 << offset):
matrix.set_pixel(7-col, 7-row, 1)
matrix.update()I designed the code for scrolling messages.
If you are just showing single characters you could forget about using the offset and just display the 8 by 8 pixels from the row and col.
Something like:
If foo[row] & (1<< col):
matrix.set_pixel(7-col, 7-row, 1)
Sorry if that doesn’t work straight away, I’m not near my stash of Pis and Pimoroni stuff at the moment.
1 Like
That’s a huge help, I will experiment. Thank you :)
Almost perfect - the letters were mirror image, all ok with this tweak, displays digits 1-4 - thank you so much for all your help!
digits = [
[0x00,0xfc,0x30,0x30,0x30,0x30,0x70,0x30],
[0x00,0xfc,0xcc,0x60,0x38,0x0c,0xcc,0x78],
[0x00,0x78,0xcc,0x0c,0x38,0x0c,0xcc,0x78],
[0x00,0x1e,0x0c,0xfe,0xcc,0x6c,0x3c,0x1c]
]
(code omitted)
if touch.four:
os.system("mpc play 4")
matrix.clear()
for row in range(0, 8):
for col in range(0, 8):
if digits[3][row] & (1 << col):
matrix.set_pixel(col, 7-row, 1)
matrix.update()
1 Like
Now written up here: http://www.suppertime.co.uk/blogmywiki/2017/07/flotilla-radio/