IoT Node w/ AM2315 Sensor
This
was a test environment for an autonomous IoT node powerd by a solar
cell
and measuring temperature and humidity.
The AM2315 sensor is connected to a NodeMCU V2 module with customized
firmware (http://nodemcu-build.com/). The NodemCU module sends its data
to a Thingspeak server for storage and visualization.
The NodeMCU was powered by a Lithium-Polymer battery with a
capacity of 1400 mAh. Sending data in a five minute cycle would
discharge this battery in about six days. To recharge the battery it is
powered by a 2 W solar cell and a LiPo Battery Charger LiPo Rider Pro
to generate a stable power supply for the NodeMCU.
The
test started at 04/13/2016 and was fnished today. In the next time the
weather conditions will not be sufficient to recharge the battery.
Fazit from this test:
- For
the conditions here we have to optimize the position of the solar panel
to generate enough power for recharging the battery.
- Additionally
the operation rate should be reduced (was one measurement/10 min at last).
During operation the NodeMCU and its WiFi communication need a lot of
power.
- Under
these conditions an IoT node w/ WiFi data transfer can work.
Alternatives like LoRa will be evaluated in the near future..
AM2315 Sensor Data:
Location:
Actual
Weather Situation in Altendorf/SZ:
| Changed
2016-10-07 |
 |
