Hello,
I have a project where I use NodeMCU boards to transmit temperature data in my flat to a web server through WiFi.
It all works fine but, due to the high power consumption of the NodeMCU (about 150mA at 5V) I need to connect it to a power supply plugged into the mains.
I am thinking about enhancements, specifically how I can get rid of the power supply and talk to my phone as well.
I would like to use Picaxe+Bluetooth+battery for the temperature measurement and transmission. This way I could make a low power device and house it in a nice 3D printed box with no external wires.
For the receiving end I thought it would be cool to take data from the BLuetooth receiver and send them to the internet by connecting to the router via its ethernet port.
Now comes the question:
Because the temperature sampling is every 10-20 minutes, would it be possible to find a way to CONTINUOUSLY harvest (and store) power from the router ethernet port and then use it in bursts to power the ethernet transmission?
It would be something nice to have a go at.
Thanks
Riccardo
I have a project where I use NodeMCU boards to transmit temperature data in my flat to a web server through WiFi.
It all works fine but, due to the high power consumption of the NodeMCU (about 150mA at 5V) I need to connect it to a power supply plugged into the mains.
I am thinking about enhancements, specifically how I can get rid of the power supply and talk to my phone as well.
I would like to use Picaxe+Bluetooth+battery for the temperature measurement and transmission. This way I could make a low power device and house it in a nice 3D printed box with no external wires.
For the receiving end I thought it would be cool to take data from the BLuetooth receiver and send them to the internet by connecting to the router via its ethernet port.
Now comes the question:
Because the temperature sampling is every 10-20 minutes, would it be possible to find a way to CONTINUOUSLY harvest (and store) power from the router ethernet port and then use it in bursts to power the ethernet transmission?
It would be something nice to have a go at.
Thanks
Riccardo