import time
from umqtt import MQTTClient
import machine, ubinascii, gc, json
from machine import I2C
from machine import Pin
from machine import DHT
CLIENT_ID = ubinascii.hexlify(machine.unique_id())
gc.collect()
d = DHT(Pin(17), DHT.DHT2X)
client = MQTTClient(CLIENT_ID, 'q.emqtt.com')
client.connect()
time.sleep(2)
while True:
try:
result, t, h = d.read()
if result:
msg = json.dumps({
'heap': gc.mem_free(),
'Type': 7,
'Id': CLIENT_ID,
'temperature': '{0:.2f}'.format(t),
'humidity': '{0:.2f}'.format(h)
})
print(msg)
client.publish('micro/python/temperature', msg)
time.sleep(5)
except OSError as e:
print(e)
from machine import Pin, I2C, time_pulse_us, Onewire, DHT, ADC, deepsleep from time import sleep, sleep_ms, sleep_us #from onewire import OneWire #from ds18x20 import DS18X20 #import dht # Channel ID 902540 # KEY IL9VIMCHEXM9H3W4 # GET https://api.thingspeak.com/update?api_key=IL9VIMCHEXM9H3W4&field1=0 # Channel ID 985682 # KEY 2IDFEOWYZCNDP7YW # GET https://api.thingspeak.com/update?api_key=2IDFEOWYZCNDP7YW&field1=0 #####----- DHT22 -----##### dht_sensor = DHT(19, DHT.DHT2X) result, temperature, humidity = dht_sensor.read() print(dht_sensor.read()) x = result temp_dht22 = float(temperature) hum_dht22 = int(humidity) print(temp_dht22, " ºC") print(hum_dht22, " %")
# Tested on M5Stack Gray
# DHT11 sensor module. see https://www.switch-science.com/catalog/818/
from m5stack import lcd
from machine import DHT, Pin
import time
dht = DHT(Pin(22))
lcd.clear()
lcd.font(lcd.FONT_Default, fixedwidth=True)
while True:
result, temperature, humidity = dht.read()
if result:
lcd.println('Temperature: {} degrees'.format(temperature),
0,
0,
color=lcd.GREEN)
lcd.println('Humidity: {} %'.format(humidity), color=lcd.GREEN)
time.sleep(60)