low power, lipo powered temperature sensor¶
- first battery powered device using our stick
- .. and our new buck-boost converter board !
- playing around with lipo's and solar modules
- it's just pretty cool to see the graphs :D
- CC2652 stick
- RP605 buck-boost converter
- MCP9808 temperature sensor
- LiPo battery
- Solar panel (max. 5V)
- LiPo charging board
- some glue.. ;D
this sensor is sending every minute the current temperature, using the OpenThread stack. informations are forwarded via MQTT, then blown into the an influxdb and visualized via a grafana dashboard.
even without the solar panel, the sensor should be powered with this huge 1100mH LiPo for multiple years.. and with.. yeah, it could life "forever"? ;D
printed a enclosure for this, not really shiny and nice, but works for the start.. =)
as mentioned above, just used some glue to make it "water proof" .. or maybe better "rain proof" ! ^^
after some tests we just glued the charging board into the top:
here is our new cool RP605 buck-boost converter in action:
literally.. all glued together! =D
and will now just sit here in front of our office window.. ;)
.. aaaand finally the graphs! thanks to the beauty and easyness of grafana..
could spend the whole day starring at those graphs.. =D
And as you can see, the battery voltage (yellow), goes UP.. So it charges more than consuming.. pretty cool though!
Downside: temperature gets up, once the sun kisses the sensor. maybe not a black enclosure could help..