node-red-contrib-pisupply-pijuice-pis0212 1.0.1
Node-RED nodes for a Pi Supply PiJuice model PIS0212
node-red-contrib-pisuppy-pijuice-pis0212
A set of Node-RED nodes to monitor a PiJuice battery backup system
Install
First follow the instructions on the Pi Supply PiJuice site. I enable I2C using sudo raspi-config, in the Interface options. Note that some battery types can be configured by adjusting the PiJuice DIP switches or any battery type can be selected via later software configuration.
I run sudo apt-get install pijuice-base as in my application the GUI is not required.
After I verify thru testing that the hardware and pijuice_cli work, then its time to install this Node-RED node.
Either use the Node-RED Menu - Manage Palette option to install,
or run the following command in your Node-RED user
directory - typically ~/.node-red
npm i node-red-contrib-pisupply-pijuice-pis0212
The node provides an example flow. In Node-RED, click the right side hamburger menu, "import", "Examples", "node-red-contrib-pisupply-pijuice-pis0212"
I would suggest trying the example demo flow before creating your own flow.
Usage
Battery Capacity
msg.payload- any
msg.payload any input triggers the start of a poll.
The output payload will be a numeric percentage of battery capacity.
For example, given an input payload of a timestamp, a fraction of a second later will result in an output payload of number 97, if the battery is 97 percent charged.
See help file for more detail.
Battery Temperature
msg.payload- any
msg.payload any input triggers the start of a poll.
The output payload will be a numeric Celsius temperature of the battery.
For example, given an input payload of a timestamp, a fraction of a second later will result in an output payload of number 25, if the battery is around 25 degrees C room temperature.
See help file for more detail.
Battery Voltage
msg.payload- any
msg.payload any input triggers the start of a poll.
The output payload will be a numeric battery voltage in units of Volts.
For example, given an input payload of a timestamp, a fraction of a second later will result in an output payload of number 4.165, if the battery is nearly fully charged.
See help file for more detail.
GPIO Current
msg.payload- any
msg.payload any input triggers the start of a poll.
The output payload will be a numeric current in mA on the UPS GPIO pins.
For example, given an input payload of a timestamp, a fraction of a second later will result in an output payload of number 594, implying the Pi is using 594 mA of current at this instant.
See help file for more detail.
GPIO Voltage
msg.payload- any
msg.payload any input triggers the start of a poll.
The output payload will be a numeric voltage in Volts on the UPS GPIO pins.
For example, given an input payload of a timestamp, a fraction of a second later will result in an output payload of number 5.039, which is pretty close to the designed Pi operating voltage of 5 volts.
See help file for more detail.
USB Power
msg.payload- any
msg.payload any input triggers the start of a poll.
The output payload will be a numeric percentage of battery capacity.
For example, given an input payload of a timestamp, a fraction of a second later will result in an output payload of string PRESENT, if the USB charge input has power to charge the battery, or NOT_PRESENT, if there is no or not enough power at the USB charge input to charge the battery.
See help file for more detail.
Links
https://uk.pi-supply.com/products/pijuice-standard
https://learn.pi-supply.com/make/pijuice-quick-start-guide-faq/
https://learn.pi-supply.com/make/how-to-save-power-on-your-raspberry-pi/
https://github.com/PiSupply/PiJuice
https://gitlab.com/SpringCitySolutionsLLC/pisupply-pijuice-pis0212
https://www.npmjs.com/package/node-red-contrib-pisupply-pijuice-pis0212
https://flows.nodered.org/node/node-red-contrib-pisupply-pijuice-pis0212
Copyrights and Licenses
Majority of code Copyright (c) 2020 Spring City Solutions LLC and other contributors and licensed under the Apache License, Version 2.0
Icon made from http://www.onlinewebfonts.com/icon aka Icon Fonts is licensed by CC BY 3.0
