Read data from Xiaomi Mijia LYWSD03MMC Bluetooth 4.2 Temperature Humidity sensor With this script you can read out the value of your LYWSD03MMC sensor, e.g. Attention! I don't know how long it takes for the sensors to drift.
Note Raspbery Pi 4 has a very Read the values of the Xiaomi Mi Bluetooth Temperature sensor 2 For more details, please see this Issue There can be done a lot more with that sensor. You find the results here Sometimes script fails to connect and tries to connect forever. This is a workaround for an obvious bug in bluepy. You can speed up the process by pressing the grey Bluetooth button on the back of the device. Whereas the timestamp is in the Unix timestamp format in UTC (seconds since 1.1.1970 00:00).There is an option not to report identical data to the callback. * Needs to have the Mi smart gateway in the room to link other Mi products. However batterylife may be significantly reduced at those low temperatures.There is currently no way to detect a too high battery drain except having empty batteries in less than 2 month. Excecute the script with The offset is not linear over the whole humidity values. Got Xiaomi LYWSDCGQ 7A:80:8E:19:36:BA Got temperature=23.4 C, humidity=65.0% Note that it can sometimes take some time for the first BLE broadcast to be received.
However to make it always work, the Python-Script enables them upon every connection establishment.Lower power mode: To safe power the connection interval is reduced. See here When looking at the specifications this LYWSD03MMC Sensor is specified from 0 °C to 60 °C. Credits go to jaggil who investigated on this and documented it well.
This bug only occured so far when trying to (re)connect.
Can be a button cell of lower quality. Buy Xiaomi Mijia Smart Temperature and Humidity Sensor at cheap price online, with Youtube reviews and FAQs, we generally offer free shipping to Europe, US, Latin America, Russia, etc. To resolve:Especially humidity value is often not very accurate. I can confirm this sensor also goes down to -9.9 °C.
Saltwater is very corrosive. When you're connected no other connection is accepted, meaning if you hold the connection no other can readout your temperature and humidity.Once you're connected the LYWSD03MMC it advertises its values about every 6 seconds, so about 10 temperature/humidity readings per minute.You need Python3 3.7 or above because of the dataclasses used in the Callback Function. mine shows 79 % RH when actually there is 75 %. with Raspberry PI. Abnormal changes will be notified, so you could calmly deal with.Through Mi Bluetooth gateway, temretaure and humidity monitor can also linkAir conditioning is turned on or off automatically, when the preset temperature is set in the MiHome APP.Automatically turn the humidifier on or off when the preset humidity is set in the MiHome APP.Mi bluetooth temperature/humidity monitor can be easily installed on the wall with built-in magnets, or with adhesive tape to stick on the wall.Ultra-low-power screen, battery life is up to one year. Xiaomi Bluetooth temperature and humidity monitor is the innovative touch to smart home series by Mi, Its warm or cold, Dry or wet all is at a glance with hygrometer sensor LCD screen and also mobile APP connectivity now available Just exec Since version 1.1 there is a watchdog-Thread checking when connection is lost for at least 60 seconds and then killing the corresponding bluepy-helper, so that other connections aren't affected.
GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together. But the correct data is still sent! MagnesiumChloride is recommended giving about 33% RH at 20 °C. To get cleaner temperature curves a debouncing function has been implemented. This is more privacy friendly since no one can sniff your temperature readings. Follow the connection guide, press the back of the monitor button for 2 seconds, So you should calibrate at another point. Ensure that no (salt) water gets in contact with the device.
Use Git or checkout with SVN using the web URL. Copyright © 2020 Xiaomi Store Pakistan. Or to be correct, sometimes 10 % when the battery is really empty, see The temperature values often change between the same values. Thus no data is lost when your storage engine has some trouble. If you like to upgrade your Distribution to current Buster release follow this Tutorial If you like installing/compiling Python3.7 please take a look at this tutorial Prequisites: python3 bluez python3-pip bluepy This gives better compression ratios in influxdb. Adiciona este sensor de humidade e temperatura ao teu kit de sensores. However it didn't notice when BT connection was lost, while this Python-Script automatically reestablishes the connection.Strictly speaking enabling notifications every time is not necessary since the device remembers it between connects. It makes no sense to give floatingpoint number when the input is none.Via the --call option a script can be passed to sent the data to. Temperature and humidity are closely linked to human comfort and health. "sendToInflux.sh" is an example script for sending the data to influxdb via http-API. Note Raspbery Pi 4 has a very limited bluetooth range. Built-in advanced sensirion temperature/humidity sensor* Needs to have the MIA Bluetooth gateway device in the room So I will redo this procedure about every year.E.g.
Keep this in mind when specifing a wrong backend.
Guarantee accurate temperature and humidity sensing result Adopting the industry-grade temperature and humidity sensor provided by famous Sensirion, the Xiaomi sensor features a ±0.3 degrees Celsius temperature measuring with Raspberry PI. It always returns 99 % battery level.