0

Use Raspberry Pi for a Modern Day Telegraph #piday #raspberrypi @Raspberry_Pi

Use Raspberry Pi for a Modern Day Telegraph Make

Turn new technology into old with this guide from Make. Using a Raspberry Pi you can start tapping out morse code in no time (well it will take some time)!

Our first Morse telegraph system was made of two hand-wound electromagnets connected by a salvaged telephone wire. An AC transformer powered the magnets, which rattled against strips of scrap metal with an ear-wrenching 60Hz buzz with each dot and dash.

Use Raspberry Pi for a Modern Day Telegraph Make 2

Luckily, our technical skills have improved since then. What would happen, we wondered, if we took the bare-bones simplicity of a physical Morse key and connected it to the internet? When the Raspberry Pi Zero W came along, offering a web-connectable board that would fit in a project box for $10, we decided to find out.

Several prototypes and programming languages later, we had a tidy laser-cut 3″×5″ box with the Pi, buzzer, and one large button. Push the button, and a Golang client on the Pi sends a signal through a WebSocket server, turning on the buzzer in all the other connected telegraphs. The Pi’s configuration lets you set the channel to which your telegraph connects, allowing open channels that anyone can listen and talk on (like amateur radio Morse bands) and private ones for you and your cohorts. Both server and client code are open source, so you can hack and modify at will.

See the full guide here!


3055 06Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!


Join 7,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython in 2018 – Python on Microcontrollers is here!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — American startups are having an increasingly smaller share of the market

Wearables — A bevel illusion

Electronics — Don’t float!

Biohacking — Optimizing the Warm Up

Python for Microcontrollers — CircuitPython 3.0.0 released!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.