Does anyone have a code sample of how to instantiate the MOTE() class in Python for more than one hub on the same machine? I can see them both when i query the usb ports. I’m a newbie with these devices and need the documentation to see if there is an overload for instantiating a new mote
ie:
can i do: Mote1 = Mote()
Mote2 = Mote()
?
TIA!!
Found my own answer!
http://docs.pimoroni.com/mote/#module-mote
have to ref the USB port in full /dev/tty, then i can have 2 instances of Mote at the same time.
This does make me wonder if I can make it smart enough to automatically find the next unused USB port when you use:
mote1 = Mote()
mote2 = Mote()
Since I suspect the hard-coded paths could be unset by just plugging in another USB device.
ooo. a discovery routine. I like that idea, because yes, the hard coded ports WILL change if you plug something else in, or even unplug and replug the MOte in.
i think i can build something that can :scan the ports, return a list of motes on the ports, and use that list to dynamically instantiate the hubs. For myself, it would have to be the first two hubs found, but such a thing could be expanded N hubs.
Import time
from mote import Mote
import serial.tools.list_ports
list = serial.tools.list_ports.comports()
#connected = []
#Find the MOTE Hubs! This machine has 2 installed
var1 = 1
for element in list:
if ‘Mote’ in element.description:
if var1 == 1:
mote1 = Mote(port_name=element.device)
var1 = 2
elif var1 == 2:
mote2 = Mote(port_name=element.device)
#clear channels on both hubs
mote1.configure_channel(1, 16, False)
mote1.configure_channel(2, 16, False)
mote1.configure_channel(3, 16, False)
mote1.configure_channel(4, 16, False)
mote2.configure_channel(1, 16, False)
mote2.configure_channel(2, 16, False)
mote2.configure_channel(3, 16, False)
mote2.configure_channel(4, 16, False)
mote1.clear()
mote2.clear()
#make one blue and one green… so we see all 8 strips lit up on both.
for channel in range(1, 5):
for pixel in range(16):
mote1.set_pixel(channel, pixel, 0, 0, 255)
mote2.set_pixel(channel, pixel, 0, 255, 0)
mote1.show()
mote2.show()
#but only do this for 5 seconds
time.sleep(5)
#then turn off the demo
mote1.clear()
mote1.show()
mote2.clear()
mote2.show()
Lost all my indents… sorry… not sure how to paste code here.
You should use either 4 spaces before each line (which is a pain if you’re copying and pasting) or three backticks, like so:
```
# Your code goes here
```Much better! This is cheerlights with 2 hubs on board, with dynamic port discovery
import time
from colorsys import hsv_to_rgb
from sys import exit
from mote import Mote
try:
import requests
except ImportError:
exit("This script requires the requests module\nInstall with: sudo pip install requests")
import serial.tools.list_ports
list = serial.tools.list_ports.comports()
#Find the MOTE Hubs! This machine has 2 installed
var1 = 1
for element in list:
if 'Mote' in element.description:
if var1 == 1:
mote1 = Mote(port_name=element.device)
var1 = 2
elif var1 == 2:
mote2 = Mote(port_name=element.device)
#Configure the 16 LED's, clear channels on both hubs
mote1.configure_channel(1, 16, False)
mote1.configure_channel(2, 16, False)
mote1.configure_channel(3, 16, False)
mote1.configure_channel(4, 16, False)
mote2.configure_channel(1, 16, False)
mote2.configure_channel(2, 16, False)
mote2.configure_channel(3, 16, False)
mote2.configure_channel(4, 16, False)
mote1.clear()
mote2.clear()
try:
while True:
r = requests.get('http://api.thingspeak.com/channels/1417/feed.json')
j = r.json()
f = j['feeds'][-8:]
f = [element for index, element in enumerate(f) if index%2==0]
print(f)
channel = 1
for col in f:
col = col['field2']
## Older versions of Python may need this line
##r, g, b = tuple(ord(c) for c in col[1:].lower().decode('hex'))
r, g, b = tuple(c for c in bytes.fromhex(col[1:]))
for pixel in range(mote1.get_pixel_count(channel)):
mote1.set_pixel(channel, pixel, r, g, b)
mote2.set_pixel(channel, pixel, r, g, b)
channel += 1
mote1.show()
mote2.show()
time.sleep(5)
except KeyboardInterrupt:
mote1.clear()
mote2.clear()
mote1.show()
mote2.show()
time.sleep(0.1)
Nice work! I might have made it extensible to any number of motes and approached it like:
motes = []
for port in serial.tools.list_ports.comports():
if 'Mote' in comport.description:
motes.append(Mote(port_name=comport.device))
motes[0]...
motes[1]...
You can do it with list comprehension, but that’s generally an ugly unreadable mess:
motes = [Mote(port_name=comport.device for comport in serial.tools.list_ports.comports() if 'Mote' in comport.description]
This lets you do bulk updates too:
for mote in motes:
mote.set_pixel(channel, pixel, r, g, b)
mote.show()
import time
from colorsys import hsv_to_rgb
from sys import exit
from mote import Mote
try:
import requests
except ImportError:
exit("This script requires the requests module\nInstall with: sudo pip install requests")
# use cmd window: python -m serial.tools.list_ports -v
import serial.tools.list_ports
list = serial.tools.list_ports.comports()
#Find the MOTE Hubs! This machine has 2 installed
motes = []
for element in list:
if 'Mote' in element.description:
motes.append(Mote(port_name=element.device))
#clear channels on both hubs
for mote in motes:
mote.configure_channel(1, 16, False)
mote.configure_channel(2, 16, False)
mote.configure_channel(3, 16, False)
mote.configure_channel(4, 16, False)
for mote in motes:
mote.clear()
trys = 1
try:
while True:
try:
r = requests.get('http://api.thingspeak.com/channels/1417/feed.json')
j = r.json()
f = j['feeds'][-8:]
except:
for mote in motes:
mote.clear()
mote.show()
time.sleep(0.1)
break
f = [element for index, element in enumerate(f) if index%2==0]
print(f)
trys += 1
print(trys)
channel = 1
for col in f:
col = col['field2']
## older python method:
##r, g, b = tuple(ord(c) for c in col[1:].lower().decode('hex'))
r, g, b = tuple(c for c in bytes.fromhex(col[1:]))
for pixel in range(motes[0].get_pixel_count(channel)):
for mote in motes:
mote.set_pixel(channel, pixel, r, g, b)
time.sleep(0.001)
for mote in motes:
mote.show()
channel += 1
time.sleep(3)
except KeyboardInterrupt:
for mote in motes:
mote.clear()
mote.show()
time.sleep(0.1)
Challenge Accepted!