September 2017
Intermediate to advanced
206 pages
4h 34m
English
Content preview from Intelligent IoT Projects in 7 Days
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Detecting coins for payments
Most vending machines use coins as a payment method. Detecting coins is tricky. A potential problem is fraud. A coin may be actual money or a custom coin. Using custom coins, users can defraud the system.
A sample of coins used in European countries can be seen here:
In this section, we'll explore two methods to detect coins. The first method is to detect by weight. The second method is to detect coins using optical sensors such as cameras. We'll explore these methods in the next section.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.