Hi Guys (and Gals, of course!),
I have a Qingping AirMonitor Lite that can be set up to emit MQTT messages.
Great! It took a while with many trials and errors, but it is now
functioning, and mosquitto_sub shows a typical message:
qingping/MAC/up
{"type":"17","id":1756,"need_ack":0,"mac":"MAC","timestamp":1764173842,"sensorData":[{"timestamp":{"value":1764173700},"temperature":{"value":22.56},"humidity":{"value":45.07},"co2":{"value":635},"pm25":{"value":1},"pm10":{"value":3},"battery":{"value":100}}]}
The topic is "qingping/MAC/up" and the message is clearly formatted as
json. So, now to get the relevant data points (pm25, pm10, co2 at a
minimum) into weewx. It looks to me like Rich Bell's WeeWX-MQTTSubscribe
could work, but I'm stymied by the (too?) many layers of the json. Why the
Qingping folks didn't just code the message as
{"type":"17","pm25":1,"co2":635 ...} I don't know. Anyway, type=17 is what
I need to parse. There are other types, but they just contain
configuration data (such as wifi SSID, etc). I *think* I need something
along the lines of:
[MQTTSubscribeService]
[[message_callback]]
# The 'type' of the message content.
type = json
[[topics]]
# The WeeWX unit_system of the incoming data.
unit_system = METRIC
# The topic(s) of interest.
[[[qingping/MAC/up]]]
# This identifies a field, 'type', whose value is appended to
every field in the current MQTT message.
# For additional information see,
https://github.com/bellrichm/WeeWX-MQTTSubscribe/wiki/Configuring-additional-options#msg_id_field
msg_id_field = type
[[[[sensorData_17]]]]
But then I don't know how to continue. Do I just keep "punching" down and
do something like
[[[[[pm25]]]]]
[[[[[[value]]]]]]]
name = pm2_5
or something similar or something completely different?
TIA!!!!
Bob
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