Let’s have a look of an interesting new BLE device from cleargrass with the following characteristics:
- Temperature -20°C to 50°C (0.2°C accuracy)
- Air pressure
- Lora (not verified)
- Integrated battery 3350mAh
- clock and date
- usb C plug
The device is quite bigger compared to Mi jia standard version. The display is the same technology as the mi jia (not e-ink)
It is not compatible with the Mi Home app, you will have to download an apk from this web site:
Once downloaded you can activate the Bluetooth of your device by pressing several seconds the top button.
You can search for the device into the app and connect to it.
Once connected you can setup a wifi connection to upload the data to Cleargrass servers regularly.
The app enable to access to firmware upgrade, currently the latest is 2.0.3_0031
I connected it to my wifi but I don’t know if it is a compulsory step to retrieve data through BLE. In all the case with the app you can setup the upload interval. In my case I have set a wifi connection every 24h as I’m not going to retrieve data by wifi but by BLE.
The fact that the device can go down to -20°C open new use cases, for example deepfrizing monitoring.
I’m able to read temperature, humidity and barometric pressure with OMG:
This is integrated from this PR:
The device doesn’t need to have the bluetooth symbol shown to advertise its sensor data.
Here is some pictures:
Yes you can read like me LoraWan and NB IOT !! But I don’t know why they are mentionned here. If a chinese user can help translating the notice, it would be great!
Maybe I’m dreaming but if we could have this kind of device compatible with BLE and Lora and maybe hack them to diffuse to The Things Network it would be amazing!