PigDogBay

__NOTOC__
Notes on the Sinclair ZX Spectrum Next [[Retro Gaming]], [[ZX Spectrum]], [[Z80 Assembly Language]]

==Next BASIC==
===Editor===
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avoidik

Citrix Workspace

In this manual I assume that we'll be using usb audio handset instead of hdmi audio output

Step

Check available architectures first

$ dpkg --print-architecture

Paraphraser

Tutorial: MQTT and the retain flag

Assumptions and setup

This tutorial assumes:

• a single computer (like a Raspberry Pi)
• MQTT broker (like Mosquitto) running
• the mosquitto_pub and mosquitto_sub commands are available.

alastair-dm

#!/usr/bin/python3
#
# load_agps_data
#
# proof of concept loading of agps data to quectel modem via AT commands

from datetime import datetime, timezone
import requests
import serial

Paraphraser

Recipe: from MQTT to InfluxDB via Node-RED

• 2024-05-16 adds case study explaining how to extract values from topic strings, and how to specify the measurement name in the message payload provided to the "influxdb out" node.
• 2023-12-02 revise graphics to correspond with "influxdb out" node, and explain the pros and cons of InfluxDB 1.8 vs InfluxDB 2.

Introduction

Getting data produced by IoT sensors into a database is practically a mandatory step before effective visualisation (eg dashboards).

This recipe shows you how to get an MQTT payload into an InfluxDB database using three Node-RED nodes. It makes the following assumptions:

kuenishi

Environment

• Using FreeBSD
• Mountain Lion
• VMware Fusion 5

• Your VMware is installed at '/Applications/VMware Fusion.app'
• Command Line tools are at '/Applications/VMware Fusion.app/Contents/Library'
• especially vmrun