Hi,
I would like to ask if it is possible to subscribe to a topic with only sensor data? Specifically I mean - “decoded_payload”:{“pm10_0”:51, “pm1_0”:35, “pm2_5”:44}.
The code I am using looks like this:
import paho.mqtt.subscribe as subscribe
Blockquote
m = subscribe.simple(topics=[‘v3/work@ttn/devices/eui-c79931364f365558/up’], hostname=“eu1.cloud.thethings.network”, port=1883, auth={‘username’: “work@ttn”,‘password’: “NNSXS…”}, msg_count=2)
for a in m:
print(a.topic)
print(a.payload)
DATA:
Blockquote
b’{“end_device_ids”:{“device_id”:“eui-c79931364f365558”,“application_ids”:{“application_id”:“praca”},“dev_eui”:“C79931364F365558”,“join_eui”:“0000000000000000”,“dev_addr”:“260B683D”},“correlation_ids”:[“as:up:01GMF9S51PE99X7MCQ3YQS7R9B”,“gs:conn:01GM6150M8T8VD81XQA43FDVR2”,“gs:up:host:01GM6150MBK29KKM4RE2SE3KFN”,“gs:uplink:01GMF9S4TW66C07M72W5W9X29N”,“ns:uplink:01GMF9S4TWYKM98ZCD89DRJ0CP”,“rpc:/ttn.lorawan.v3.GsNs/HandleUplink:01GMF9S4TW7SDPB7ZFD74NQR4W”,“rpc:/ttn.lorawan.v3.NsAs/HandleUplink:01GMF9S51NNQ1CM2RK39PE16X2”],“received_at”:“2022-12-17T05:44:16.181578208Z”,“uplink_message”:{“session_key_id”:“AYUem5ZIVCm5gYH4dV3+Og==”,“f_port”:10,“frm_payload”:“IwAsADMA”,“decoded_payload”:{“pm10_0”:51,“pm1_0”:35,“pm2_5”:44},“rx_metadata”:[{“gateway_ids”:{“gateway_id”:“netlab-we-pb”,“eui”:“7276FF0039040296”},“time”:“2022-12-17T05:44:15.932712Z”,“timestamp”:1252443108,“rssi”:-122,“channel_rssi”:-122,“snr”:-0.5,“location”:{“latitude”:53.11750286637398,“longitude”:23.149580061435703,“altitude”:163,“source”:“SOURCE_REGISTRY”},“uplink_token”:“ChoKGAoMbmV0bGFiLXdlLXBiEghydv8AOQQClhDkh5vVBBoMCK+u9ZwGEN+rzcsDIKDltNu5yUc=”,“channel_index”:6,“received_at”:“2022-12-17T05:44:14.388142363Z”},{“gateway_ids”:{“gateway_id”:“50313953a3694750”,“eui”:“50313953A3694750”},“time”:“2022-12-17T05:44:24.438966Z”,“timestamp”:2613106564,“rssi”:-105,“channel_rssi”:-105,“snr”:0.75,“location”:{“latitude”:53.13277873712397,“longitude”:23.13817799091339,“altitude”:160,“source”:“SOURCE_REGISTRY”},“uplink_token”:“Ch4KHAoQNTAzMTM5NTNhMzY5NDc1MBIIUDE5U6NpR1AQhK+D3gkaDAivrvWcBhCK04DSAyCgt6fKhrJc”,“channel_index”:1,“received_at”:“2022-12-17T05:44:15.948930954Z”}],“settings”:{“data_rate”:{“lora”:{“bandwidth”:125000,“spreading_factor”:7,“coding_rate”:“4/5”}},“frequency”:“868300000”,“timestamp”:1252443108,“time”:“2022-12-17T05:44:15.932712Z”},“received_at”:“2022-12-17T05:44:15.964816209Z”,“consumed_airtime”:“0.051456s”,“locations”:{“user”:{“latitude”:53.11880755944648,“longitude”:23.134897532509516,“source”:“SOURCE_REGISTRY”}},“network_ids”:{“net_id”:“000013”,“tenant_id”:“ttn”,“cluster_id”:“eu1”,“cluster_address”:“eu1.cloud.thethings.network”}}}’
There is a lot of data in this topic, too much, but I am only interested in the data from my sensor 
Thanks in advance.