Video Tutorial: Buttons and Pull-Ups
This is a 4-minute video version of the Arduino Pull-Up Tutorial:
This is a 4-minute video version of the Arduino Pull-Up Tutorial:
The other day the question was asked “Can you sell a bag of Trash on Craigslist”? This question interested me

Not everything is free
because in Dan Ariely’s book “Predictably Irrational“, he discussed the behavior people exhibit when something is “Free.” In short, our brains actually react differently when “Free” is offered instead of a price. People quickly forget there are costs associated with anything that is “Free.”
It was quickly discovered if you actually post “I have a bag of trash,” it gets flagged. Real Fast. Not satisfied with the result, I made a post that described a bag of garbage without using those exact words. The result? Well, they surprised me. After just 12 hours, I had to take down the post because I got tired of the emails.
Nobody at “cmiyc.com” or “cmiyc.org” will send you email. In fact, I don’t even have an outgoing mail server setup. So if you receive emails from me, a spammer is forging my domain name in the email headers.
There is little that can prevent this, since it is something that happens in between you and I. All I can say, it is perfectly safe to drop any emails that appear to come from “cmiyc.com”.
More information about this type of attack, referred to as a “Joe Job”, can be found in this Wikipedia Article.