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My end goal is to create an interface that can control a Crazyflie drone with a few buttons.
I have a flask application for that, here is app.py:
from flask import Flask, render_template
from flask_sock import Sock
from pycrazyswarm import Crazyswarm
swarm = Crazyswarm()
cf = swarm.allcfs.crazyflies[0]
app = Flask(__name__)
sock = Sock(app)
@app.route('/')
def index():
return render_template('index.html')
@sock.route('/action')
def echo(sock):
while True:
data = sock.receive()
if data == 'left':
print("LEFT")
cf.goTo([-1.,0,0],0.,0.,True,1.)
if data == 'right':
cf.goTo([1.,0,0],0.,0.,True,1.)
if data == 'forward':
cf.goTo([0.,1.,0],0.,0.,True,1.)
if data == 'back':
cf.goTo([0.,-1.,0],0.,0.,True,1.)
if data =='take off':
print('take off....')
cf.takeoff(targetHeight=1.0,duration=2.5)
if data =='land':
print('...landing, please wait')
cf.land(targetHeight=1.0,duration=2.5)
if __name__ == '__main__':
app.run(debug=True)
and here is index.html
<!doctype html>
<html>
<head>
<title>Drone</title>
</head>
<script>
var socket = new WebSocket('ws://' + location.host + '/action');
function sendText(button) {
var text = button.value; // Get the value of the button
socket.send(text); // Send the text to the server
}
</script>
<body>
<h1>Drone Controller</h1>
<div id="log"></div>
<br>
<button value="left" onclick="sendText(this)">Left</button>
<button value="right" onclick="sendText(this)">Right</button>
<button value="back" onclick="sendText(this)">Back</button>
<button value="forward" onclick="sendText(this)">Forward</button>
<button value="take off" onclick="sendText(this)">Take off</button>
<button value="land" onclick="sendText(this)">Land</button>
</body>
</html>
I run the programs using python3 app.py and then access the interface through my browser at 0.0.0.0:5000
The issue is that I can use any of the buttons once, but then the program crashes and I get this error: shutdown request: [:/CrazyflieAPI] Reason: new node registered with same name
This line
cf = swarm.allcfs.crazyflies[0]
Gets only called once, and after that, each time a button was pressed, only the code block within the action-socket end point would be run. So I do not quite understand why I get that error. I am only using one Crazyflie-drone, which means that I have only one node. Right?
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Hi!
My end goal is to create an interface that can control a Crazyflie drone with a few buttons.
I have a flask application for that, here is app.py:
and here is index.html
I run the programs using python3 app.py and then access the interface through my browser at 0.0.0.0:5000
The issue is that I can use any of the buttons once, but then the program crashes and I get this error:
shutdown request: [:/CrazyflieAPI] Reason: new node registered with same nameThis line
cf = swarm.allcfs.crazyflies[0]Gets only called once, and after that, each time a button was pressed, only the code block within the action-socket end point would be run. So I do not quite understand why I get that error. I am only using one Crazyflie-drone, which means that I have only one node. Right?
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