Cette page fournit une simple interface de navigation pour trouver des entités décrites par une propriété et une valeur nommée. D’autres interfaces de recherche disponibles comprennent la page recherche de propriété, et le constructeur de requêtes ask.
| True to scale sound impression, in some places too loud | Discreet sound, blade flapping can be heard |
| Cost is 4000 - 6000 € approx fort he turbine | Cost is 1500 € approx (motor and controler) |
| Additonally required equipment: fuel station (200 €), Kerosene, fuel tanks, valves, tubing | Additonally required equipment: charger, power supply, lipo batteries (another 1000 €) |
| Kerosene can be difficult to get in some areas | Lipo batteries have a risk to burn |
| Kerosene smell can be a problem in cars | - |
| Higher virbation level in the model | - |
| Thrust influences the flight characteristics | - |
| Model loses weight during flight (burnt kerosene) and changes sometimes center of gravity | - |
| More know how required (starting procedure, kerosene supply in the model by fuel tanks,…) | |
import machine
import time
import urequests
import network
# Wi-Fi credentials
ssid = 'wifi_name' #input your own wifi name
password = 'password' #input your own password
# IFTTT webhook key
api_key = 'your_own_key' #input your own key
# Connect to Wi-Fi
station = network.WLAN(network.STA_IF)
station.active(True)
station.connect(ssid, password)
while station.isconnected() == False:
pass
print('Connection successful')
print(station.ifconfig())
# Set up ultrasonic sensor
trigger = machine.Pin(4, machine.Pin.OUT)
echo = machine.Pin(5, machine.Pin.IN)
def main():
while True:
# Send trigger pulse
trigger.value(0)
time.sleep_us(5)
trigger.value(1)
time.sleep_us(10)
trigger.value(0)
# Measure duration of echo pulse
while echo.value() == 0:
start = time.ticks_us()
while echo.value() == 1:
end = time.ticks_us()
duration = time.ticks_diff(end, start)
# Calculate distance
distance = duration * 0.034 / 2
# Send data to IFTTT
data = {'value1': distance}
submitData("ultrasonic_distance", data)
# Delay before next measurement
time.sleep(5)
def submitData(event, data):
try:
print('Sending data to IFTTT:', data)
request_headers = {'Content-Type': 'application/json'}
request = urequests.post(
'https://maker.ifttt.com/trigger/'+ event + '/with/key/' + api_key,
json=data,headers=request_headers)
print(request.text)
request.close()
except OSError as e:
print('Failed to send data to IFTTT.', e)
if __name__ == '__main__':
main()pip install pyserial psutil)
'''Arduino IDE'''
* Latest Arduino IDE or VS Code with PlatformIO
* ESP32 board support installed (Espressif package)
* Libraries: '''Arduino_JSON''' (install via Library Manager)
'''Network'''
* Local Wi‑Fi network credentials (SSID and password) for the ESP32 to host the webserver
(SSID and password) for the ESP32 to host the webserver
)[EXAMPLE] When a '''user1''' publishes an image on social media, then only the '''user2''' subscribed to '''user1''' can view/receive the image. Here, the '''user1''' is the '''PUBLISHER''', '''user2''' is the '''SUBSCRIBER''', and the '''user1's account''' is the '''BROKER'''.* According to the above analogy, the image that is published is the data, that was '''transferred from user1 to user2''' 📤. And that is the exact scenario in an MQTT Pub/Sub model. * We have a more secure layer 🔒 to make sure the data is shared t'''hrough a specific path, we call th'''at 'topic', When use'''r1''' publishes data on topic, the subscriber automatically receives if already connected to the broker. Hence, t'''he''' LOW latency.connected to the broker. Hence, t'''he''' LOW latency.)
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