April 2020
Intermediate to advanced
294 pages
7h 53m
English
Content preview from MicroPython Projects
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The I/O expander schematic
At this point, we have all the information that we need to develop a detailed schematic diagram for our project, as follows:
This design is fairly straightforward. First, the pyboard is supplied 5 volts through the USB or VIN pin. The 5-volt power rail is used to power the LEDs and the RobotDyn PCA8574. The pyboard onboard regulator also converts this rail into a 3.3-volt power rail that is used as the pushbutton power supply.
Next, the negative side of the LEDs, the cathode, is connected to the X1, X2, and X3 pins. These pins are associated with an internal timer that allows us to generate a PWM signal on them. ...
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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.