In The News

I made a home security system, powered by a Raspberry Pi 3

CommunityNews

CommunityNews

I made a home security system, powered by a Raspberry Pi 3

Raspberry Pi security alarm — the basics.
In November last year — I started building a DIY security alarm system, using a Raspberry Pi as the controller. My plan was to make a self-sustained system, using proper alarm hardware — like PIR sensors and sirens.
Integration with Home Assistant would be an add-on, not a requirement. I wanted the system to be as redundant and fault-tolerant as I could make it.
This is a pretty long story, with some twists and turns — let’s get into it :point_down:

Read in full here:

This thread was posted by one of our members via one of our news source trackers.

1 comment
/security
0 1657 1

Popular General Dev topics Top

Devtalk
General Dev Jobs

Your job here?
Our jobs section is for full-time paid positions and for companies to post their own jobs (no consultancies or agencies, sorry!) - simply...
#jobs
4 1559 0
New
Dusty
General Learning Resources

An Introduction to Alternative Keyboard Layouts
Thanks to @AstonJ for encouraging me to post this here: An introduction to alternative keyboard layouts Feel free to post your own expe...
#article/keyboards#keyboard-layouts#sticky
19 1990 8
New
dasdom
General Dev Chat

Standing Desks
No chair. I have a standing desk. This post was split into a dedicated thread from our thread about chairs :slight_smile:
#workspace#opinions
177 8406 77
New
First poster: bot
In The News

Bit – A modernized Git CLI written in Go
github.com
#git/go
1 5353 1
New
Margaret
Content Creators

What tech topics do you think will (or should) be the focus of 2021?
Hello content creators! Happy new year. What tech topics do you think will be the focus of 2021? My vote for one topic is ethics in tech...
#general
110 3689 44
New
herminiotorres
Code Editors

Doom Emacs
Someone where use Doom Emacs right now? I like to starting this topic to discuss it and learn a little bit more, not just only the emacs ...
/emacs#code-editors
21 2417 14
New
Margaret
Sales & Offers

Get 50% off these PragProg books during our Think Again Sale
Think Again 50% Off Sale » The theme of this sale is new perspectives on familiar topics. Enter coupon code ThinkAgain2021 at checkout t...
#community#pragprog/elixir/book-a-common-sense-guide-to-data-structures-and-algorithms-second-edition/book-programming-machine-learning/book-the-ray-tracer-challenge/book-forge-your-future-with-open-source/book-software-design-x-rays#algorithms/book-testing-elixir#machine-learning#sale/book-concurrent-data-processing-in-elixir/book-intuitive-python
8 5805 3
New
AstonJ
Hardware

CharaChorder - type at the speed of thought?
Saw this on TikTok of all places! :lol: Anyone heard of them before? Lite:
/keyboards#charachorder
13 3704 5
New
Sylvia
General Dev Jobs

Senior Elixir Backend Developer (Remote)
About talentbay Our online networking platform connects students with teams in business and industry. It consists of our mobile app for ...
/elixir#jobs#backend
3 2052 1
New
AstonJ
General Dev Chat

Chris Seaton, the creator of TruffleRuby, has died
Chris Seaton, the creator of TruffleRuby has died. It appears from suicide :cry: He left this note on Twitter on the weekend: And one...
/ruby#mental-health
4 2126 3
New

Other popular topics Top

AstonJ
Hardware

Which keyboard do you have?
If it’s a mechanical keyboard, which switches do you have? Would you recommend it? Why? What will your next keyboard be? Pics always w...
#hardware/keyboards#mechanical-keyboards#sticky
144 8219 50
New
AstonJ
Tech Chat

What are you watching?
Or looking forward to? :nerd_face:
#community
480 9107 251
New
DevotionGeo
Backend Developer Forum>Chat/Discussions

Would you use Erlang now when there is Elixir?
Why, if your answer is yes?
/elixir/erlang
167 4163 52
New
AstonJ
Backend Developer Forum>Questions/Help

Erlang's not installing on macOS Big Sur "You are natively building Erlang/OTP for a later version of MacOSX than current version"
Just done a fresh install of macOS Big Sur and on installing Erlang I am getting: asdf install erlang 23.1.2 Configure failed. checking ...
/erlang#asdf#macos#big-sur
10 5353 8
New
AstonJ
General Dev Chat

What are the 'coolest' languages and tech right now?
Inspired by this post from @Carter, which languages, frameworks or other tech or tools do you think is killing it right now? :upside_down...
#community#adoption#cool-tech/elixir/erlang/rust/typescript/phoenix#otp/svelte/wasm/agda
160 3626 49
New
PragmaticBookshelf
In The Spotlight

Spotlight: Noel Rappin (Author)
“Finding the Boundaries” Hero’s Journey with Noel Rappin @noelrappin Even when you’re ultimately right about what the future ho...
#author-spotlight#web-development/rails/book-modern-front-end-development-for-rails/book-rails-5-test-prescriptions
34 3628 22
New
rustkas
Backend Developer Forum>Chat/Discussions

Using Regular Expressions in Erlang
Intensively researching Erlang books and additional resources on it, I have found that the topic of using Regular Expressions is either c...
/erlang#regular-expressions
91 4879 44
New
PragmaticBookshelf
In The Spotlight

Spotlight: Rebecca Skinner (Author) Interview and AMA!
Author Spotlight Rebecca Skinner @RebeccaSkinner Welcome to our latest author spotlight, where we sit down with Rebecca Skinner, auth...
#author-spotlight/haskell/book-effective-haskell
106 10209 29
New
DevotionGeo
General Questions/Help

Do you prefer regular mechanical keyboards or low profile mechanical keyboards and why?
I have always used antique keyboards like Cherry MX 1800 or Cherry MX 8100 and almost always have modified the switches in some way, like...
/keyboards#mechanical-keyboards
27 2388 10
New
PragmaticBookshelf
In The Spotlight

Spotlight: Peter Ullrich (Author) Interview and AMA!
Author Spotlight: Peter Ullrich @PJUllrich Data is at the core of every business, but it is useless if nobody can access and analyze ...
/elixir/phoenix/book-building-table-views-with-phoenix-liveview
72 3682 22
New
Back to top

Latest in General Dev

Using Token Sequences to Iterate Ranges
In The News
Tailscale raises $160 Million (USD) Series C to build the New Internet
In The News
Better typography with text-wrap pretty
In The News
Apache ECharts
In The News
Decomposing factorial of 300K as the product of 300K factors larger than 100K
In The News
Why Companies Don’t Fix Bugs
In The News
Testing Frameworks and Mini-Languages
In The News
Writing C for curl
In The News
The Best Programmers I Know | Matthias Endler
In The News
Apple's encryption row with UK should not be secret, court rules
In The News
The mathematics of crochet
In The News
A multi-player tournament benchmark that tests LLMs in social reasoning, strategy, and deception
In The News
Knowing where your engineer salary comes from
In The News
Your Startup Doesn’t Need to Be a Unicorn
In The News
Identifying a defective RAM IC on laptops with soldered memory
In The News
Diagnosing bugs preventing sleep on Windows
In The News
The order of files in /etc./SSH/sshd_config.d/ matters (and may surprise you)
In The News
Model-signing - A tool for signing and verifying ML models
In The News
Serving vector tiles, fast – spatialists.ch – geospatial news
In The News
Apple’s Darwin OS and XNU Kernel Deep Dive
In The News

View all threads ❯

Latest (all)

Using Token Sequences to Iterate Ranges
In The News
Crystal 1.16.0 released!
Backend News
Nest v11.0.14 released!
Backend News
Ruby 3.3.8 Released
Backend News
PostgreSQL: pg_dumpbinary v2.19 released
Backend News
Annual meeting of DSF Members at DjangoCon Europe
Backend News
Laravel v12.0.6 and v12.0.5 released!
Backend News
Python 3.14.0a7, 3.13.3, 3.12.10, 3.11.12, 3.10.17 and 3.9.22 are now available
Backend News
Rust: March Project Goals Update
Backend News
Tailscale raises $160 Million (USD) Series C to build the New Internet
In The News
Better typography with text-wrap pretty
In The News
Apache ECharts
In The News
Decomposing factorial of 300K as the product of 300K factors larger than 100K
In The News
V weekly.2025.15 released!
Backend News
React Native v0.79.0 released!
Hybrid News

View all threads ❯

We ❤️ helpful members!

We reward our most helpful members via our MOTM scheme - by giving away a whopping 25 books per year!

Member of the Month

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that'll move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

Categories:

Popular Portals

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that'll move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

We're in Beta

About us Mission Statement See our Roadmap