AM2302 setup failed

Configuration
1

I try to setup AM2302 in HA 0.42.3 on RPi 3. HA installed in virtual env.
I got

17-04-14 16:17:04 WARNING (MainThread) [homeassistant.setup] Setup of sensor is taking over 10 seconds. 
17-04-14 16:17:06 ERROR (MainThread) [homeassistant.setup] Not initializing sensor.dht because could not install dependency http://github.com/adafruit/Adafruit_Python_DHT/archive/da8cddf7fb629c1ef4f046ca44f42523c9cf2d11.zip#Adafruit_DHT==1.3.0 
17-04-14 16:17:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform sensor.dht: Could not install all requirements. 
17-04-14 16:17:06 INFO (MainThread) [homeassistant.core] Bus:Handling <Event call_service[L]: service_data=message=The following components and platforms could not be set up: * sensor.dht Please check your config, notification_id=invalid_config, title=Invalid config, domain=persistent_notification, service=create, service_call_id=1978607632-1> 
17-04-14 16:17:06 INFO (MainThread) [homeassistant.core] Bus:Handling <Event call_service[L]: service_data=message=The following components and platforms could not be set up: * sensor.dht Please check your config, notification_id=invalid_config, title=Invalid config, domain=persistent_notification, service=create, service_call_id=1978607632-2> 
17-04-14 16:17:06 INFO (MainThread) [homeassistant.core] Bus:Handling <Event state_changed[L]: old_state=None, entity_id=persistent_notification.invalid_config, new_state=<state persistent_notification.invalid_config=The following components and platforms could not be set up: * sensor.dht Please check your config; title=Invalid config @ 2017-04-14T16:17:06.980242+07:00>> 
17-04-14 16:17:06 INFO (MainThread) [homeassistant.core] Bus:Handling <Event service_executed[L]: service_call_id=1978607632-1> 
17-04-14 16:17:07 INFO (MainThread) [homeassistant.core] Bus:Handling <Event service_executed[L]: service_call_id=1978607632-2>

my sensors

- platform: dht
  sensor: AM2302
  pin: 24
  name: rpi
  monitored_conditions:
   - temperature
   - humidity

In all-in-one setup I did`t got this error. Where is the problem?

2

I fond this in syslog

Apr 14 16:17:04 ha hass[725]: 17-04-14 16:17:04 WARNING (MainThread) [homeassistant.setup] Setup of sensor is taking over 10 seconds.
Apr 14 16:17:06 ha hass[725]: Command "/srv/homeassistant/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-0mk7ztmf-build/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-s_9nunnw-record/install-record.txt --single-version-externally-managed --compile --install-headers /srv/homeassistant/include/site/python3.4/Adafruit-DHT --home=/tmp/tmpjjyfo3hr" failed with error code 1 in /tmp/pip-0mk7ztmf-build/
Apr 14 16:17:06 ha hass[725]: 17-04-14 16:17:06 ERROR (MainThread) [homeassistant.setup] Not initializing sensor.dht because could not install dependency http://github.com/adafruit/Adafruit_Python_DHT/archive/da8cddf7fb629c1ef4f046ca44f42523c9cf2d11.zip#Adafruit_DHT==1.3.0
Apr 14 16:17:06 ha hass[725]: 17-04-14 16:17:06 ERROR (MainThread) [homeassistant.setup] Unable to prepare setup for platform sensor.dht: Could not install all requirements.
Apr 14 16:17:06 ha hass[725]: 17-04-14 16:17:06 INFO (MainThread) [homeassistant.core] Bus:Handling <Event call_service[L]: service_data=message=The following components and platforms could not be set up:
Apr 14 16:17:06 ha hass[725]: * sensor.dht
Apr 14 16:17:06 ha hass[725]: Please check your config, notification_id=invalid_config, title=Invalid config, domain=persistent_notification, service=create, service_call_id=1978607632-1>

tmp dir is empty

 ls -l /tmp/tmpjjyfo3hr/
total 0
3

My workaround

cd /tmp
git clone https://github.com/adafruit/Adafruit_Python_DHT.git
cd Adafruit_Python_DHT
sudo apt-get install python3-dev -y
sudo python3 setup.py install
sudo pip3 install paho-mqtt

in

crontab -e
@reboot python3 /home/pi/AM3202_mqtt.py

AM2302_mqtt.py

import paho.mqtt.client as mqtt
import time
import sys
import Adafruit_DHT

time.sleep(10) #Sleep to allow wireless to connect before starting MQTT

mqttc = mqtt.Client(client_id="lr_am2302")
mqttc.username_pw_set("usename", password="password")
mqttc.connect("localhost", port=1883, keepalive=60)
mqttc.loop_start()

topic_temp = "sensor/livingroom/temp"
topic_humidity = "sensor/livingroom/humidity"

while True:
    try:
        humidity, temp = Adafruit_DHT.read_retry(22, 24) #22 is the sensor type(22 for DHT22/AM2302, 11 for DHT11), 24 is the GPIO pin number.

        if temp is not None:
            temp = round(temp, 2)
            mqttc.publish(topic_temp, payload=temp, retain=True)
        if humidity is not None:
            humidity = round(humidity, 2)
            mqttc.publish(topic_humidity, payload=humidity, retain=True)
        time.sleep(120)
    except (EOFError, SystemExit, KeyboardInterrupt):
        mqttc.disconnect()
        sys.exit()

in HA

- platform: mqtt
  state_topic: "sensor/livingroom/temp"
  name: 'Temperature'
  unit_of_measurement: '°C'

- platform: mqtt
  state_topic: "sensor/livingroom/humidity"
  name: 'Humidity'
  unit_of_measurement: '%'

in mqtt

sensor/livingroom/temp 29.1
sensor/livingroom/humidity 12.4
4

For me the solution was to add the user that runs homeassistant (in my case homeassitant) to the gpio group, in order to give him the rigths to read GPIOs

sudo adduser homeassistant gpio