Thank you for the response. In trying that code, it made it so the LAN cannot move the buttons either. Here is the error list I got: *web.Server Traceback (most recent call last):* exceptions.NameError: global name 'origin' is not defined /usr/lib/python2.7/dist-packages/twisted/web/server.py:189 in process 188 self._encoder = encoder 189 self.render(resrc) 190 except: /usr/lib/python2.7/dist-packages/twisted/web/server.py:238 in render 237 try: 238 body = resrc.render(self) 239 except UnsupportedMethod as e: /usr/lib/python2.7/dist-packages/twisted/web/resource.py:250 in render 249 raise UnsupportedMethod(allowedMethods) 250 return m(request) 251 /usr/local/www/servos.rpy:15 in render_GET 14 def render_GET(self,request): 15 if origin in (self.permitted_origins): 16 request.setHeader('Access-Control-Allow-Origin', origin) exceptions.NameError: global name 'origin' is not defined Deve On Sun, Aug 27, 2017 at 12:03 PM, Donal McMullan <donal.mcmullan@gmail.com> wrote:
Perhaps you just need to set the 'Access-Control-Allow-Origin' header? Something like this might work:
# Import necessary files
import serial
from twisted.web.resource import Resource
# Setup Arduino at correct speed
try:
arduino = serial.Serial('/dev/ttyACM0', 9600)
except:
arduino = serial.Serial('/dev/ttyACM1', 9600)
class MoveServo(Resource):
isLeaf = True
permitted_origins = ('http://192.168.1.122:9000',)
def render_GET(self,request):
if origin in (self.permitted_origins):
request.setHeader('Access-Control-Allow-Origin', origin)
try:
# Send value over serial to the Arduino
arduino.write(request.args['value'][0])
return 'Success'
except:
return 'Failure'
resource = MoveServo()
On 27 August 2017 at 17:10, Deve Krehbiel <deve@speedprint.com> wrote:
First post so forgive me if I am not explaining this right.
I am trying to make a baby cam and then heavily document it for everyone to have access to. I am using a Raspberry Pi with Rasbian. I am using mjpg-streamer for the streaming with no problems.
The problem is I am also using two servos for pan and tilt. To accomplish this I am using an Arduino Uno. This is so I can add IR lighting for night vision, etc later. I am not a programmer so this is getting frustrating after a few weeks of failure.
How is it failing you might ask..well, its working perfectly with only ONE exception: Every time I push the button for left/right/up/down I get this:
XMLHttpRequest cannot load http://192.168.1.122:81/servos.rpy?value=100P. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://192.168.1.122:9000' is therefore not allowed access.
On the local area network, it still works, but taking it to the internet it does not.
Here are the two programs that make this happen. One is servos.rpy and the other is the supporting HTML/Get script; **** servos.rpy ----------------------------------- # Import necessary files import serial from twisted.web.resource import Resource # Setup Arduino at correct speed try: arduino = serial.Serial('/dev/ttyACM0', 9600) except: arduino = serial.Serial('/dev/ttyACM1', 9600)
class MoveServo(Resource): isLeaf = True def render_GET(self,request): try: # Send value over serial to the Arduino arduino.write(request.args['value'][0]) return 'Success' except: return 'Failure'
resource = MoveServo() ***
Now for the HTML/Get script:
** <!doctype html> <html> <head> <title>Make Use Of DIY Security Camera</title> <style type="text/css"> #container { /* center the content */ margin: 0 auto; text-align: center; } </style> </head> <body> <div id="container"> <img src="/?action=stream" /><br> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jque ry.min.js"></script><br /> <button onclick="servos.move('P', 10)">Left</button> <button onclick="servos.move('P', -10)">Right</button> <button onclick="servos.move('T', -10)">Down</button> <button onclick="servos.move('T', 10)">Up</button> </div> </body> <script> var servos; $( document ).ready(function() { servos = moveServos(); }); function moveServos() { // Store some settings, adjust to suit var panPos = 70, tiltPos = 90, tiltMax = 170, tiltMin = 45, panMax = 170, panMin = 20; return { move:function(servo, adjustment) { var value; if(servo == 'P') { if(!((panPos >= panMax && adjustment > 0) || (panPos <= panMin && adjustment < 0))) { // Still within allowed range, "schedule" the movement panPos += adjustment; } value = panPos + 'P'; } else if(servo == 'T') { if(!((tiltPos >= tiltMax && adjustment > 0) || (tiltPos <= tiltMin && adjustment < 0))) { // Still within allowed range, "schedule" the movement tiltPos += adjustment; } value = tiltPos + 'T'; } // Use AJAX to actually move the servo $.get('http://192.168.1.122:81/servos.rpy?value=' + value); }, } } </script> </html>
***** Twisted is started: sudo twistd -n web -p 81 --path /usr/local/www/
I would be forever grateful if someone could take a serious look at this and tell me where I am going wrong. Once this is fixed, I can start documenting the entire system for everyone. Thank you!
Deve
_______________________________________________ Twisted-web mailing list Twisted-web@twistedmatrix.com https://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web
_______________________________________________ Twisted-web mailing list Twisted-web@twistedmatrix.com https://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web