You can have a lot of fun with a tiny traffic light using an Arduino and three different color lights. There are bunch of things you can do to build on it.
The anecdote I always share about my 2013 internship at Square involves Bob. It took place during the quarterly Hack Week, when the company allowed everyone to take a break from work and build whatever they liked. Cash App (known as "Square Cash" back then) had just been launched, and the only way to send money was by emailing someone with a dollar amount in the subject line and cc'ing [email protected]. My fellow interns and I decided to expand this email functionality by building a "pay by Tweet" feature with essentially the same mechanics (https://twitter.com/hackweek9bot).
We downloaded the codebase (I believe it was called "Franklin") and found ourselves struggling to get it up and running. I entered the room where the Cash team was seated and started asking a random guy questions about the dependency injection library (Guice) and various other topics. After about half an hour of answering my questions, he compiled a list of documentation for me to read and sent it to me via email. I returned to my Hack Week team and forwarded the email to them. "Oh, dude, that's our CTO," one of my teammates informed me. At that moment, I was convinced I would be in trouble for bothering an executive. However, instead of that, I ended up receiving a fist bump during our science fair-style project presentation. He was a genuinely cool guy.
I was confused by the first chart where they cropped off the Y-Axis label.
I thought the X-Axis was "# of people at the company" and the Y-Axis was "# of developers". That wouldn't make sense because the "less than 10" person company would have "16.40" developers!
SDK https://github.com/SalvatoreT/iroh-ts
Examples
- https://salvatoret.github.io/iroh-ts/examples/chat/
- https://salvatoret.github.io/iroh-ts/examples/debug/
- https://salvatoret.github.io/iroh-ts/examples/poker/
I made this a while back because I want an easy way to throw together games for family game nights.