How to connect a BME680?

shramik_salgaonkar · December 5, 2019, 11:30am

do you get an error with python3?

skweresp · December 5, 2019, 11:32am

I don’t try this. I will inform You when I will be back home. Now I’m in work.

skweresp · December 5, 2019, 2:40pm

that is with python3. Also works:

pi@raspberrypi:~ $ cd bme680/
pi@raspberrypi:~/bme680 $ cd examples/
pi@raspberrypi:~/bme680/examples $ ls
compensated-temperature.py  indoor-air-quality.py  read-all.py  read-cayenne.py  setup.cfg  temperature-offset.py  temperature-pressure-humidity.py
pi@raspberrypi:~/bme680/examples $ python3 read-all.py 
read-all.py - Displays temperature, pressure, humidity, and gas.

Press Ctrl+C to exit!


Calibration data:
par_gh1: -51
par_gh2: -12741
par_gh3: 18
par_h1: 880
par_h2: 990
par_h3: 0
par_h4: 45
par_h5: 20
par_h6: 120
par_h7: -100
par_p1: 37570
par_p10: 30
par_p2: -10627
par_p3: 88
par_p4: 6075
par_p5: -104
par_p6: 30
par_p7: 68
par_p8: -5847
par_p9: -1284
par_t1: 26188
par_t2: 26263
par_t3: 3
range_sw_err: 0
res_heat_range: 1
res_heat_val: 42
t_fine: 115799


Initial reading:
gas_index: 0
gas_resistance: 5696068.567757571
heat_stable: False
humidity: 36.098
meas_index: 0
pressure: 1008.06
status: 32
temperature: 22.62


Polling:
22.62 C,1008.08 hPa,36.12 %RH
22.63 C,1008.06 hPa,36.11 %RH,6662.286161804072 Ohms
22.66 C,1008.11 hPa,36.09 %RH,7925.595957416227 Ohms
22.68 C,1008.09 hPa,36.05 %RH,9582.835957350066 Ohms
22.71 C,1008.08 hPa,36.00 %RH,11340.547520715018 Ohms
22.73 C,1008.09 hPa,35.96 %RH,13193.631648248273 Ohms
22.75 C,1008.12 hPa,35.92 %RH,15128.751434122238 Ohms
22.77 C,1008.12 hPa,35.87 %RH,17009.029684977024 Ohms

shramik_salgaonkar · December 5, 2019, 2:56pm

try this code:

Untitled.txt (2.1 KB)

skweresp · December 5, 2019, 3:20pm

Show this and stop, don’t print live data:

pi@raspberrypi:~/Cayenne-MQTT-Python/examples $ python new_bme680.py 
read-all.py - Displays temperature, pressure, humidity, and gas.

Press Ctrl+C to exit!


Calibration data:
par_gh1: -51
par_gh2: -12741
par_gh3: 18
par_h1: 880
par_h2: 990
par_h3: 0
par_h4: 45
par_h5: 20
par_h6: 120
par_h7: -100
par_p1: 37570
par_p10: 30
par_p2: -10627
par_p3: 88
par_p4: 6075
par_p5: -104
par_p6: 30
par_p7: 68
par_p8: -5847
par_p9: -1284
par_t1: 26188
par_t2: 26263
par_t3: 3
range_sw_err: 0
res_heat_range: 1
res_heat_val: 42
t_fine: 116286


Initial reading:
gas_index: 0
gas_resistance: 1977860
heat_stable: False
humidity: 37.386
meas_index: 0
pressure: 1007.8
status: 32
temperature: 22.71

after ctrl+c

^CTraceback (most recent call last):
  File "new_bme680.py", line 66, in <module>
    client.loop()
  File "build/bdist.linux-armv6l/egg/cayenne/client.py", line 122, in loop
  File "/usr/local/lib/python2.7/dist-packages/paho_mqtt-1.5.0-py2.7.egg/paho/mqtt/client.py", line 1163, in loop
    socklist = select.select(rlist, wlist, [], timeout)
KeyboardInterrupt

shramik_salgaonkar · December 5, 2019, 3:25pm

can you just do one thing for me, i dont know what is the issue here. it should work. Can you open Example-01-SendData.py and copy code from read-all.py into it. so that it look like the new code i send you.

skweresp · December 5, 2019, 3:33pm

Do I have to erase data from Example-01-SendData.py?

shramik_salgaonkar · December 5, 2019, 3:33pm

no, Just edit what ever is required.

shramik_salgaonkar · December 5, 2019, 3:34pm

@adam do you know what is the issue here?

adam · December 5, 2019, 3:45pm

I would suggest putting everything in the home directory and running from there. You can get permission and or conflicting file names/libraries from running within an example directory.

cd ~
mkdir bme680_test
cd bme680_test
cp ~/Cayenne-MQTT-Python/examples/new_bme680.py new_bme680.py
python new_bme680.py

Or copy w/e file you are currently working with. I see you are trying a bunch of them.

skweresp · December 5, 2019, 3:55pm

I copy code from read-all.py to Example-01-SendData.py and it works:

pi@raspberrypi:~/Cayenne-MQTT-Python/examples $ python SendData.py 
read-all.py - Displays temperature, pressure, humidity, and gas.

Press Ctrl+C to exit!


Calibration data:
par_gh1: -51
par_gh2: -12741
par_gh3: 18
par_h1: 880
par_h2: 990
par_h3: 0
par_h4: 45
par_h5: 20
par_h6: 120
par_h7: -100
par_p1: 37570
par_p10: 30
par_p2: -10627
par_p3: 88
par_p4: 6075
par_p5: -104
par_p6: 30
par_p7: 68
par_p8: -5847
par_p9: -1284
par_t1: 26188
par_t2: 26263
par_t3: 3
range_sw_err: 0
res_heat_range: 1
res_heat_val: 42
t_fine: 116517


Initial reading:
gas_index: 0
gas_resistance: 3014623
heat_stable: False
humidity: 37.628
meas_index: 0
pressure: 1007.65
status: 32
temperature: 22.76


Polling:
22.76 C,1007.64 hPa,37.62 %RH
22.77 C,1007.64 hPa,37.62 %RH,12613 Ohms
22.80 C,1007.62 hPa,37.60 %RH,15227 Ohms
22.82 C,1007.60 hPa,37.55 %RH,17988 Ohms
22.85 C,1007.61 hPa,37.53 %RH,20854 Ohms
22.88 C,1007.60 hPa,37.47 %RH,23695 Ohms
22.89 C,1007.62 hPa,37.42 %RH,26614 Ohms
22.91 C,1007.63 hPa,37.37 %RH,29561 Ohms
22.93 C,1007.63 hPa,37.34 %RH,32368 Ohms
22.94 C,1007.61 hPa,37.29 %RH,35048 Ohms
22.96 C,1007.62 hPa,37.25 %RH,37526 Ohms
22.97 C,1007.63 hPa,37.22 %RH,40150 Ohms
22.98 C,1007.62 hPa,37.18 %RH,42642 Ohms
22.99 C,1007.64 hPa,37.15 %RH,45169 Ohms
23.00 C,1007.63 hPa,37.13 %RH,47149 Ohms
23.01 C,1007.64 hPa,37.11 %RH,49519 Ohms
23.01 C,1007.63 hPa,37.07 %RH,51625 Ohms
23.02 C,1007.67 hPa,37.05 %RH,53883 Ohms
23.03 C,1007.66 hPa,37.02 %RH,56122 Ohms
23.03 C,1007.65 hPa,36.99 %RH,58148 Ohms
23.04 C,1007.67 hPa,36.98 %RH,60196 Ohms
23.05 C,1007.65 hPa,36.95 %RH,62162 Ohms
23.05 C,1007.64 hPa,36.92 %RH,64064 Ohms
23.06 C,1007.63 hPa,36.90 %RH,66296 Ohms
23.06 C,1007.65 hPa,36.89 %RH,68240 Ohms
23.07 C,1007.64 hPa,36.89 %RH,69892 Ohms
23.07 C,1007.63 hPa,36.86 %RH,72305 Ohms
23.08 C,1007.65 hPa,36.84 %RH,73901 Ohms
23.09 C,1007.64 hPa,36.83 %RH,76048 Ohms
23.09 C,1007.64 hPa,36.81 %RH,77311 Ohms
23.09 C,1007.63 hPa,36.81 %RH,78989 Ohms
23.10 C,1007.65 hPa,36.79 %RH,81447 Ohms
23.10 C,1007.65 hPa,36.77 %RH,82816 Ohms
23.11 C,1007.63 hPa,36.77 %RH,84402 Ohms
23.11 C,1007.63 hPa,36.75 %RH,86049 Ohms
23.12 C,1007.65 hPa,36.75 %RH,87763 Ohms
23.12 C,1007.65 hPa,36.74 %RH,89641 Ohms
23.13 C,1007.64 hPa,36.72 %RH,91005 Ohms
23.13 C,1007.63 hPa,36.72 %RH,92615 Ohms
23.13 C,1007.62 hPa,36.69 %RH,94390 Ohms
23.14 C,1007.64 hPa,36.69 %RH,95466 Ohms
23.14 C,1007.65 hPa,36.69 %RH,95824 Ohms
23.15 C,1007.63 hPa,36.67 %RH,97554 Ohms
23.15 C,1007.62 hPa,36.67 %RH,98471 Ohms
23.16 C,1007.67 hPa,36.65 %RH,99940 Ohms
23.16 C,1007.66 hPa,36.63 %RH,101948 Ohms
23.16 C,1007.66 hPa,36.63 %RH,103523 Ohms
23.17 C,1007.65 hPa,36.62 %RH,104296 Ohms
23.17 C,1007.65 hPa,36.60 %RH,105946 Ohms
23.17 C,1007.65 hPa,36.60 %RH,107579 Ohms
23.18 C,1007.67 hPa,36.59 %RH,108979 Ohms
23.18 C,1007.66 hPa,36.59 %RH,110197 Ohms
23.18 C,1007.65 hPa,36.56 %RH,112040 Ohms
23.19 C,1007.65 hPa,36.58 %RH,112567 Ohms
23.19 C,1007.65 hPa,36.56 %RH,114805 Ohms
23.19 C,1007.67 hPa,36.53 %RH,116158 Ohms
23.20 C,1007.66 hPa,36.55 %RH,116888 Ohms
23.20 C,1007.65 hPa,36.52 %RH,118207 Ohms
23.20 C,1007.64 hPa,36.53 %RH,119986 Ohms
^CConnecting to mqtt.mydevices.com:8883
Connected with result code 0
SUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/cmd/+
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/sys/model Python
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/sys/version 1.1.0
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/1 temp,c=1
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/2 lum,lux=10
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/3 bp,hpa=801
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/1 temp,c=2
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/2 lum,lux=20
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/3 bp,hpa=802
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/1 temp,c=3
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/2 lum,lux=30
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/3 bp,hpa=803
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/1 temp,c=4
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/2 lum,lux=40
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/3 bp,hpa=804
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/1 temp,c=5
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/2 lum,lux=50
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/3 bp,hpa=805
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/1 temp,c=6
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/2 lum,lux=60
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/3 bp,hpa=806
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/1 temp,c=7
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/2 lum,lux=70
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/3 bp,hpa=807
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/1 temp,c=8
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/2 lum,lux=80
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/3 bp,hpa=808
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/1 temp,c=9
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602-11ea-8221-599f77add412/data/2 lum,lux=90
PUB v1/06487d60-1537-11ea-84bb-8f71124cfdfb/things/f9f06b50-1602

and It show data in example dashboard:

but there’s something wrong with data. It start to send when I click ctrl+c

shramik_salgaonkar · December 5, 2019, 4:01pm

excellent work. Click on the green + on the widget to make it permanent.

it is to kill the process.

skweresp · December 5, 2019, 4:05pm

That is my new code, it works but I think it need some chlittle changes:

pi@raspberrypi:~/Cayenne-MQTT-Python/examples $ cat SendData.py 
#!/usr/bin/env python
import cayenne.client
import time
import bme680
import logging

print("""read-all.py - Displays temperature, pressure, humidity, and gas.

Press Ctrl+C to exit!

""")

try:
    sensor = bme680.BME680(bme680.I2C_ADDR_PRIMARY)
except IOError:
    sensor = bme680.BME680(bme680.I2C_ADDR_SECONDARY)

# These calibration data can safely be commented
# out, if desired.

print('Calibration data:')
for name in dir(sensor.calibration_data):

    if not name.startswith('_'):
        value = getattr(sensor.calibration_data, name)

        if isinstance(value, int):
            print('{}: {}'.format(name, value))

# These oversampling settings can be tweaked to
# change the balance between accuracy and noise in
# the data.

sensor.set_humidity_oversample(bme680.OS_2X)
sensor.set_pressure_oversample(bme680.OS_4X)
sensor.set_temperature_oversample(bme680.OS_8X)
sensor.set_filter(bme680.FILTER_SIZE_3)
sensor.set_gas_status(bme680.ENABLE_GAS_MEAS)

print('\n\nInitial reading:')
for name in dir(sensor.data):
    value = getattr(sensor.data, name)

    if not name.startswith('_'):
        print('{}: {}'.format(name, value))

sensor.set_gas_heater_temperature(320)
sensor.set_gas_heater_duration(150)
sensor.select_gas_heater_profile(0)

# Up to 10 heater profiles can be configured, each
# with their own temperature and duration.
# sensor.set_gas_heater_profile(200, 150, nb_profile=1)
# sensor.select_gas_heater_profile(1)

print('\n\nPolling:')
try:
    while True:
        if sensor.get_sensor_data():
            output = '{0:.2f} C,{1:.2f} hPa,{2:.2f} %RH'.format(
                sensor.data.temperature,
                sensor.data.pressure,
                sensor.data.humidity)

            if sensor.data.heat_stable:
                print('{0},{1} Ohms'.format(
                    output,
                    sensor.data.gas_resistance))

            else:
                print(output)

        time.sleep(1)

except KeyboardInterrupt:
    pass


# Cayenne authentication info. This should be obtained from the Cayenne Dashboard.
MQTT_USERNAME  = "06487d60-1537-11ea-84bb-8f71124cfdfb"
MQTT_PASSWORD  = "23309cdee31964b2ae4caed9417b689c9bebece2"
MQTT_CLIENT_ID = "f9f06b50-1602-11ea-8221-599f77add412"


client = cayenne.client.CayenneMQTTClient()
client.begin(MQTT_USERNAME, MQTT_PASSWORD, MQTT_CLIENT_ID, loglevel=logging.INFO, port=8883)
# For a secure connection use port 8883 when calling client.begin:
# client.begin(MQTT_USERNAME, MQTT_PASSWORD, MQTT_CLIENT_ID, port=8883, loglevel=logging.INFO)

i=0
timestamp = 0

while True:
    client.loop()
    
    if (time.time() > timestamp + 10):
        client.celsiusWrite(1, i)
        client.luxWrite(2, i*10)
        client.hectoPascalWrite(3, i+800)
        timestamp = time.time()
        i = i+1

shramik_salgaonkar · December 5, 2019, 4:08pm

ohh no,

shramik_salgaonkar · December 5, 2019, 4:14pm

I have edited your code.
Untitled.txt (3.1 KB)

skweresp · December 5, 2019, 4:17pm

Your code don’t work:

pi@raspberrypi:~/bme680_test $ python bme680.py 
read-all.py - Displays temperature, pressure, humidity, and gas.

Press Ctrl+C to exit!


Traceback (most recent call last):
  File "bme680.py", line 4, in <module>
    import bme680
  File "/home/pi/bme680_test/bme680.py", line 14, in <module>
    sensor = bme680.BME680(bme680.I2C_ADDR_PRIMARY)
AttributeError: 'module' object has no attribute 'BME680'

YEEEES
now it works. I rename it and remove bme680.py file:

shramik_salgaonkar · December 5, 2019, 4:21pm

@adam any thoughts on this issue?

skweresp · December 5, 2019, 4:25pm

But it shows data on example device `Device 24c6’ - that is device what was generated when I try Example_01_senddata.py and not on my device BME680.

skweresp · December 5, 2019, 4:36pm

Now I rename device and everything is OK. Thank You very much for help and Your time. Can You tell me is it posiible to also add my pm2.5 sensor [SDS011] to my dashboard in Cayenne?
I make it work with that tutorial and it autostart when reboot. Can I do it with my code to autostart:
$ crontab -e
@reboot cd /home/pi/bme680_test && ./python Example_bme680.py

shramik_salgaonkar · December 5, 2019, 4:47pm

yes, just add the pm2.5 code to your existing code and send it with client.virtualWrite(6, x) where x is the pm2.5 data

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How to connect a BME680?

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