Cost of a sensor including battery and plastic case 16USD. Search this on aliexpress " LILYGO®TTGO T-Higrow ESP32 WiFi And Bluetooth Battery And DHT11 Soil Temperature And Humidity Photometric Electrolyte Sensor"
Rancho,
Wondering you can help, I have been pulling my hair out trying to get the sensors working.
I can listen to the mqtt topic which produces:
{
"mqtt": {
"mqtt": "246f28b20e20",
"sensorname": "plant1",
"date": "22-10",
"time": "11:54",
"sleep5Count": 0,
"bootCount": 0,
"lux": 8.333333,
"temp": 25.7,
"humid": 57,
"soil": 65535,
"salt": 0,
"saltadvice": "needed",
"bat": 100,
"batcharge": "charging",
"battvolt": 2679,
"battvoltage": 4.749582,
"wifissid": "Haloooch",
"rel": "3.0.5"
}
}
Note this is slightly different format from the BeardedTinker video and instructions, guessing there have been some changes to the TTGO-HiGrow-mqtt-master-mac-id-autodisc.ino file.
I have the following for the sensor:
- platform: mqtt
name: "Plant1_salt_1"
state_topic: "mqtt/246f28b20e20"
unit_of_measurement: 'q'
value_template: "{{ value_json.salt }}"
icon: mdi:bottle-tonic
When looking in developer tools I see the sensor by the value is blank:
Having the same issue for all the other sensors, just using ‘salt’ as an example.
Always the same, I post asking for help and 2mins later work it out! Turns out the value_template was wrong. Should have been:
value_template: "{{ value_json.mqtt.salt }}"
i am making similar with LoRaWAN too, all works up to The Things Network but so far i could not fetch the data from Home Assistant. I will post a question separately as its LoRaWAN topic, not WIFI
looks like i use an earlier firmware, i dont have these parameters
