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ESP32 (ESP-WROOM-32) as an MQTT Client Subscribed to Linux Server Load Average Messages
Post 303043617 by Neo on Sunday 2nd of February 2020 07:49:36 AM
02-02-2020
Administrator
Well, it's not really "pretty" yet (as a dashboard) but MQTTool for IOS works, "not bad"... and it's totally free.
I changed the PHP script around a bit to publish all the "Load Averages" (in one message) and all the "Wuhan Coronavirus Stats" (in one message) and subscribed to both of them. In the "Load Average" app, there is the one, five and fifteen minute server load averages (very handy if managing a server, obviously) and in the "Wuhan" app, there are the C (confirmed cases), the S (suspected cases), the D (deaths) and R (recovered cases). You can easily start to image the myriad way to use MQTT for you own private "things" network from this short tutorial, I think.
BTW, I am still searching for a good "dashboard" app for MQTT (for either IOS or macOS), but no joy yet.
When you think about it. MQTT is "the only way to go" if you are developing these kinds of private "IoT" app, every devices can be both a publisher and a subscribe, and if you run your own private MQTT server, you do not have to worry about a third parties mining your data.
I changed the PHP script around a bit to publish all the "Load Averages" (in one message) and all the "Wuhan Coronavirus Stats" (in one message) and subscribed to both of them. In the "Load Average" app, there is the one, five and fifteen minute server load averages (very handy if managing a server, obviously) and in the "Wuhan" app, there are the C (confirmed cases), the S (suspected cases), the D (deaths) and R (recovered cases). You can easily start to image the myriad way to use MQTT for you own private "things" network from this short tutorial, I think.
BTW, I am still searching for a good "dashboard" app for MQTT (for either IOS or macOS), but no joy yet.
When you think about it. MQTT is "the only way to go" if you are developing these kinds of private "IoT" app, every devices can be both a publisher and a subscribe, and if you run your own private MQTT server, you do not have to worry about a third parties mining your data.
This User Gave Thanks to Neo For This Post:
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LEARN ABOUT MOJAVE
mac::apps::launch5.18
Launch(3) User Contributed Perl Documentation Launch(3) NAME
Mac::Apps::Launch - Mac module to launch /quit applications SYNOPSIS
use Mac::Apps::Launch; my @apps = qw(R*ch Arch MPGP); my $path = "HD:System Folder:Finder"; LaunchApps([@apps], 1) or warn $^E; # launch and switch to front LaunchApps([@apps]) or warn $^E; # launch and don't switch LaunchApps($app, 1) or warn $^E; # launch and switch to front LaunchSpecs($path, 1) or warn $^E; # use path instead of app ID QuitApps(@apps) or warn $^E; # quit all @apps QuitAllApps(@apps) or warn $^E; # quit all except @apps IsRunning('MACS'); # returns boolean for whether # given app ID is running SetFront('MACS') or warn $^E; # set Finder to front Hide('MACS') or warn $^E; # hide Finder Show('Finder', 1) or warn $^E; # show Finder (1 == use name) DESCRIPTION
Simply launch or quit applications by their creator ID. The Finder can be quit in this way, though it cannot be launched in this way. This module is used by many other modules. This module as written does not work with MacPerls prior to 5.1.4r4. "Hide" and "Show" do not currently work on Mac OS X. Apps that don't have signatures under Mac OS X currently aren't handled, except with LaunchSpecs(). "SetFront" and "IsRunning" can take a four-char creator ID ('MACS'), a bundle ID ('com.apple.Finder'), or a path (/System/Library/CoreServices/Finder.app). They both optionally take a second parameter which affirms that the data is indeed a path (for those rare cases where a path might possibly look like a creator ID or bundle ID ... you never know). "IsRunning" will return the PSN of the application if it is running, which you can then use for targetting the app, or converting to a PID (with "Mac::Processes::GetProcessPID()"), to send signals to it. EXPORT
Exports functions "QuitApps", "QuitAllApps", and "LaunchApps", "IsRunning", "LaunchSpecs", "SetFront", "Hide", "Show". AUTHOR
Chris Nandor <pudge@pobox.com>, http://pudge.net/ Copyright (c) 1999-2005 Chris Nandor. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.18.2 2007-01-03 Launch(3)