WOW! That did it. I am amazed! Thank you so much! My next chore is to figure out how to make sliders for this so that I can move the servos in 1 degree increments. On to that task! I am so appreciative! Thank you Donal!DeveOn Sun, Aug 27, 2017 at 2:43 PM, Donal McMullan <donal.mcmullan@gmail.com> wrote:Ah sorry Deve - I failed to paste the first like of the render_GET method.# Import necessary filesimport serialfrom twisted.web.resource import Resource# Setup Arduino at correct speedtry:arduino = serial.Serial('/dev/ttyACM0', 9600)except:arduino = serial.Serial('/dev/ttyACM1', 9600)class MoveServo(Resource):isLeaf = Truepermitted_origins = ('http://192.168.1.122:9000',)def render_GET(self,request):origin = request.getHeader('Origin')if origin in (self.permitted_origins):request.setHeader('Access-Control-Allow-Origin', origin) try:# Send value over serial to the Arduinoarduino.write(request.args['value'][0]) return 'Success'except:return 'Failure'resource = MoveServo()On 27 August 2017 at 19:01, Deve Krehbiel <deve@speedprint.com> wrote:This is what I get without your code:index1.html:1 XMLHttpRequest cannot load http://192.168.1.122:81/servos.rpy?value=70P . No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://192.168.1.122:9000' is therefore not allowed access.jquery.min.js:4 XHR failed loading: GET "http://192.168.1.122:81/servos.rpy?value=70P ".This is what I get with it:jquery.min.js:4 GET http://192.168.1.122:81/servos.rpy?value=100P send @ jquery.min.js:4ajax @ jquery.min.js:4r.(anonymous function) @ jquery.min.js:4move @ index1.html:54onclick @ index1.html:17index1.html:1 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. The response had HTTP status code 500.jquery.min.js:4 XHR failed loading: GET "http://192.168.1.122:81/servos.rpy?value=100P ".I appreciate your efforts and if you have any other ideas... Thank You!DeveOn Sun, Aug 27, 2017 at 12:48 PM, Deve Krehbiel <deve@speedprint.com> wrote: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 i n process 188self._encoder = encoder
189self.render(resrc)
190except:
/usr/lib/python2.7/dist-packages/twisted/web/server.py:238 i n render 237try:
238body = resrc.render(self)
239except UnsupportedMethod as e:
/usr/lib/python2.7/dist-packages/twisted/web/resource.py:250 in render 249raise UnsupportedMethod(allowedMetho
ds) 250return m(request)
251/usr/local/www/servos.rpy:15 in render_GET 14def render_GET(self,request):
15if origin in (self.permitted_origins):
16request.setHeader('Access-Con
trol-Allow-Origin', origin) exceptions.NameError: global name 'origin' is not definedDeveOn 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 filesimport serialfrom twisted.web.resource import Resource# Setup Arduino at correct speedtry:arduino = serial.Serial('/dev/ttyACM0', 9600)except:arduino = serial.Serial('/dev/ttyACM1', 9600)class MoveServo(Resource):isLeaf = Truepermitted_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 Arduinoarduino.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 filesimport serialfrom twisted.web.resource import Resource# Setup Arduino at correct speedtry:arduino = serial.Serial('/dev/ttyACM0', 9600)except:arduino = serial.Serial('/dev/ttyACM1', 9600)class MoveServo(Resource):isLeaf = Truedef render_GET(self,request):try:# Send value over serial to the Arduinoarduino.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 "></script><br />ry.min.js <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;$( document ).ready(function() {servos = moveServos();});function moveServos() {// Store some settings, adjust to suitvar panPos = 70,tiltPos = 90,tiltMax = 170,tiltMin = 45,panMax = 170,panMin = 20;return {move:function(servo, adjustment) {var value;if(servo == 'P') {if(!((panPos >= panMax && adjustment > 0) || (panPos <= panMin && adjustment < 0))) {// Still within allowed range, "schedule" the movementpanPos += adjustment;}value = panPos + 'P';}else if(servo == 'T') {if(!((tiltPos >= tiltMax && adjustment > 0) || (tiltPos <= tiltMin && adjustment < 0))) {// Still within allowed range, "schedule" the movementtiltPos += adjustment;}value = tiltPos + 'T';}// Use AJAX to actually move the servo$.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_________________
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