-
Set the timezone
tzutil /s "Eastern Standard Time"
-
Enable automatic updates:
cscript \windows\system32\scregedit.wsf /AU 4
import uuid | |
import wtforms_json | |
from sqlalchemy import not_ | |
from sqlalchemy.dialects.postgresql import UUID | |
from wtforms import Form | |
from wtforms.fields import FormField, FieldList | |
from wtforms.validators import Length | |
from flask import current_app as app | |
from flask import request, json, jsonify, abort |
This flow (and associated circuits/hardware) is designed to allow Node-RED to pass messages via radio waves in the same way as it passes messages via MQTT, using commonly-available, inexpensive handheld radios and the Raspberry Pi. The flow has been tested using Baofeng, Wouxun, and Quansheng handheld ham radios. In short, the goal is to allow packet-like transmissions between Node-RED systems over miles, while keeping the hardware costs down (or free for those hams who have surplus Baofengs hanging around). This could be used for a backup to MQTT when the Wifi is unreliable, or simply as a long-distance and network-agnostic message channel.
Prerequisites: Software
First, we need PulseAudio to make and receive sounds with our USB soundcard:
sudo apt-get install pulseaudio -y