Finding the ev3dev libary and cwiid

[Will2004]

hi i am wondering how i can control my robot via a wiimote is there any code that you can send to me about how to do this

I am also wondering on how to fix the error no module named ev3dev.motor or ev3dev.sensor because it is not working. i know how to get my projects onto the robot but the hard thing is that when i run them on the robot they go straight back to the project selector screen. i did the touch sensor project that is shown on the example. I did this:

from ev3dev2.motor import LargeMotor, OUTPUT_A, OUTPUT_B, SpeedPercent, MoveTank
from ev3dev2.sensor import INPUT_1
from ev3dev2.sensor.lego import TouchSensor
from ev3dev2.led import Leds

ts = TouchSensor(INPUT_1)
leds = Leds()

print("Press the touch sensor to change the LED color!")

while True:
if ts.is_pressed:
leds.set_color("LEFT", "GREEN")
leds.set_color("RIGHT", "GREEN")
else:
leds.set_color("LEFT", "RED")
leds.set_color("RIGHT", "RED")

but it comes up saying no module named ev3dev2.motor

[WasabiFan]

Please answer all of the questions in the issue template. In particular, we need to know the versions of the software you are using.

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- **ev3dev version:** PASTE THE OUTPUT OF `uname -r` HERE
- **ev3dev-lang-python version:** INSERT ALL VERSIONS GIVEN BY `dpkg-query -l python3-ev3dev*` HERE

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[Will2004]

how do i figure out which version i am using

[Will2004]

what i want to do is try to control my robot via a wiimote, but i am having some problems.

1. I the Cwiid module cannot be found
2. When I run my code in visual studio it cannot find the ev3dev module
3. I think the code might be out of date so can you try and update it for me:

#!/usr/bin/env python3
# Drive your robot with a wii remote!
# Left motor on port B, right motor on port C,
# vertical arm on port D.
# Requires the package 'python-cwiid'.
# Make sure bluetooth is enabled in brickman
# before trying to use this. Hold 2 to go forward
# and 1 to go backward.
import sys
import os
import time

import cwiid
import pyev3 <---I think this does not work anymore

def clamp(value, lower, upper):
	return min(upper, max(value, lower))

print('press 1+2 on the wiimote now')
time.sleep(1)
w = cwiid.Wiimote()
print 'connected?'
w.led = 6
w.rpt_mode = cwiid.RPT_ACC | cwiid.RPT_BTN

left_motor = pyev3.Motor(pyev3.OUTPUT_B)
left_motor.reset()
left_motor.run_mode = 'forever'
left_motor.regulation_mode = 'on'

right_motor = pyev3.Motor(pyev3.OUTPUT_C)
right_motor.reset()
right_motor.run_mode = 'forever'
right_motor.regulation_mode = 'on'

arm = pyev3.Motor(pyev3.OUTPUT_D)
arm.reset()
arm.run_mode = 'forever'
arm.regulation_mode = 'off'

target_distance = 8
top_speed = 720

left_motor.run = 1
right_motor.run = 1

last_btn_state = 0
move = 0

try:
	while True:
		state = w.state
		
		buttons = state['buttons']
		if buttons != last_btn_state:
			if buttons & cwiid.BTN_MINUS:
				top_speed -= 10
				print top_speed
			if buttons & cwiid.BTN_PLUS:
				top_speed += 10
				print top_speed
			if buttons & cwiid.BTN_2:
				move = 1
			elif buttons & cwiid.BTN_1:
				move = -1
			else:
				move = 0
			if buttons & cwiid.BTN_LEFT:
				arm.duty_cycle_sp = 100
				arm.run = 1
			elif buttons & cwiid.BTN_RIGHT:
				arm.duty_cycle_sp = -100
				arm.run = 1
			else:
				arm.run = 0
			print top_speed, move
			last_btn_state = buttons
		
		if move:
			acc = state['acc']
			tilt = (clamp(acc[1], 95, 145) - 120) / 25.0 # roughly between -0.5 and 0.5
			turn = top_speed * tilt
			turn = clamp(turn, -abs(top_speed), abs(top_speed))
			left_motor.pulses_per_second_sp = int(top_speed - turn) * move
			right_motor.pulses_per_second_sp = int(top_speed + turn) * move
		else:
			left_motor.pulses_per_second_sp = 0
			right_motor.pulses_per_second_sp = 0
finally:
	left_motor.run = 0
	right_motor.run = 0

[WasabiFan]

how do i figure out which version i am using

It says in my comment. The commands are listed there.

what i want to do is try to control my robot via a wiimote, but i am having some problems.

"pyev3" is the name of someone else's Python library; this GitHub repository doesn't have anything to do with the "pyev3" module. You'll have to ask the author of this code for help.

[Will2004]

ok thanks for that can you and try and help me with this then:
this contains the ev3dev2 module and thats it but visual studio cannot find it:

#!/usr/bin/env python3
# the 'shebang' above is included so that the program
# can be launched in Python3 from within Brickman

# -----------------------------------------------------------------------------
# Copyright (c) 2015 Denis Demidov <dennis.demidov@gmail.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# -----------------------------------------------------------------------------

# This demo shows how to remote control an Explor3r robot
#
# Red buttons control left motor, blue buttons control right motor.
# Leds are used to indicate movement direction.

from time import sleep
from ev3dev2 import *
# Connect two large motors on output ports B and C
lmotor = LargeMotor('outB')
rmotor = LargeMotor('outC')

# Check that the motors are actually connected
assert lmotor.connected
assert rmotor.connected

# Connect remote control
rc = RemoteControl(); assert rc.connected

# Initialize button handler
# button = Button()   # not working so disabled

# Turn leds off
Leds.all_off()

def roll(motor, led_group, direction):
    """
    Generate remote control event handler. It rolls given motor into given
    direction (1 for forward, -1 for backward). When motor rolls forward, the
    given led group flashes green, when backward -- red. When motor stops, the
    leds are turned off.

    The on_press function has signature required by RemoteControl class.
    It takes boolean state parameter; True when button is pressed, False
    otherwise.
    """
    def on_press(state):
        if state:
            # Roll when button is pressed
            motor.run_forever(speed_sp=90*direction)
            Leds.set_color(led_group, direction > 0 and Leds.GREEN or Leds.RED)
        else:
            # Stop otherwise
            motor.stop(stop_action='brake')
            Leds.set(led_group, brightness_pct=0)

    return on_press

# Assign event handler to each of the remote buttons
rc.on_red_up    = roll(lmotor, Leds.LEFT,   1)
rc.on_red_down  = roll(lmotor, Leds.LEFT,  -1)
rc.on_blue_up   = roll(rmotor, Leds.RIGHT,  1)
rc.on_blue_down = roll(rmotor, Leds.RIGHT, -1)

# Enter event processing loop
#while not button.any():   #not working so commented out
while True:   #replaces previous line so use Ctrl-C to exit
    rc.process()
    sleep(0.01)
    
# Press Ctrl-C to exit

[Will2004]

i don't know how to do fix the issue above ^^^^^^^

[dwalton76]

I can't help you much with visual studio...I have never used it. If you do not use visual studio are you able to run the code above on your ev3?

[Will2004]

so what should I use instead

[Will2004]

i have seen pUTTY SHH before but I am not very sure how it works and have never managed to get any projects onto it, but I will have a look

[Will2004]

I have looked at this issue here and i have added in the user/bin line that was needed but now it is saying.
/usr/bin/env: 'python3\r': No such file or directory.

I do not really understand what this means
| |
V V

If you encounter an error such as /usr/bin/env: 'python3\r': No such file or directory, you must switch your editor's "line endings" setting for the file from "CRLF" to just "LF". This is usually in the status bar at the bottom.

[dwalton76]

I means you have a carriage return at the end of the line (windows tends to do this). Try using this site to remove them:
https://www.miniwebtool.com/remove-line-breaks/

[Will2004]

still did not work I did this

and it also did this as well

[dwalton76]

Google “dos2unix” that is a tool that will remove them for sure

[dlech]

If you encounter an error such as /usr/bin/env: 'python3\r': No such file or directory, you must switch your editor's "line endings" setting for the file from "CRLF" to just "LF". This is usually in the status bar at the bottom.

This is at the bottom right-hand corner of the VS code window (in the blue bar between "UTF-8" and and "Python" in the screenshot above). Click "CRLF" and then select "LF" in the box that pops up at the top of the screen. There is no need for external tools.

[Will2004]

ok i have done that but and the error is gone but the problem now is (sorry):