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The only problem is that I rarely use them for electronics projects, which means they just sit around collecting dust. So, in order to change that let’s go on an educational journey in which we will find out how easy it is to control the GPIO s of Raspberry Pi and whether it can truly replace an Arduino development board. Let’S get started Music. This video is sponsored by jl CPC, be one fact about them. Pcbs from jlc PCB are entirely tested via 405 protesters and 10 AIO. Ai machines upload your Gerber files to order ten professional PCBs for only 2.00. First off, we have to decide which incarnation of Raspberry Pi we will use. I went with the Raspberry Pi three year model B, since it is the newest version that I own. Next, we need a micro SD card. I inserted it into a computer, downloaded the newest version of raspbian unzipped it and installed it onto the micro SD cards with the win32diskimager software. Afterwards, I inserted the micro SD card into the PI connected a keyboard and mouse through USB, as well as a screen: foon HDMI, cable and powered up the system with a five fold phone charger. At this point, the Raspberry Pi will configure the operating system and after staring at a black screen for 2 minutes, I was greeted with the usual desktop. Now he began the confusing part for me, since I had no idea what programming language to use and how to execute the written codes, but let’s start basic for programming.

The two most common languages for the Raspberry Pi are Python and C, and since the Arduino programming language is more or less simplified, see you let’s stick to the C language for first pieces of codes. To start with, I opened the terminal and type Tin Man GPIO, which opened the manual for the GPIO tool of the wiring PI library, which means it was already installed. Wiring pi is a pin based GPIO access library, written C, which is mandatory for our codes, so feel free to visit its website for more information about it or how to install it. If it is not pre installed on your version of raspbian anyway, now we could create a new file, give it a dot C file, name open it with the text, editor and basically start coding, but it wouldn’t quite be right if we compared it to the Arduino. With its nicely color coded IDE software, so let’s rather go ahead and instead utilize the pre installed genie ID here to write our codes after creating a new dot C file. We must, firstly include the wiring PI library and after declaring the pin, number and creating the main void function, we have to initialize the library a’ by using one of those three commands. The difference between them is the pin numbering of the GPIO s. If we once again use the terminal, we can execute the previously discovered with all commands from the manual and thus see the different pin numbering scheme of the three systems.

I went with the Broadcom GPIO pin numbering for my codes and continued by utilizing the pin mode function, digits, write function and delay function to create a simple blink codes, disregarding the effects that there is now set up a loop section, but only a main void section That we must manually loop over never ending while construct such code. Syntax should be familiar to anyone who used Arduino before or anyone who watched mouth. We know 101 102 and 103 video series to use the code, though we must firstly open the set, build, commands and add the wiring PI library to the compile and build segment and at the sudo command to the execute section. Next, we can click the build icon and once that process was completes, we can click the execute icon, which brings up a new terminal window. That means it was time to connect the ground and the utilized GPIO pin to an LED with current, limiting resistor on a breadboard and, as you can see, the blink codes work without a problem. In this case, the only difference to nod Reno circuits is that the Raspberry Pi uses 3.3 volts voltage levels instead of the 5 volts voltage levels of an Arduino. Next let’s add an inputs to our codes, which once pressed turns on the previously utilized GPIO pin and, as you can see, the Raspberry Pi not only offers pull up resistors just like the Arduino, but also offers pulldown resistors, which is a useful feature to have anyway.

After building executing the codes and adding a push button to the circuits and wiring it up, we can once again confirm that the code works. Fine. As the last example, let’s set one of the four available pwm pins as a PWM outputs and create a PWM signal, mover 50 duty cycle. After executing the codes and hooking up the assigned GPIO pin to the oscilloscope, we can observe the correct PWM signal, which even offers a high frequency of 300 kilohertz to adjust the duty cycle. Let’S. Add a potentiometer as an analog inputs to the circuits, which brings me to the two problems of the raspberry pi, considering the programming they are now included, timers and no ADC, which means no precisely timed events and no measuring of analog voltages. Now. Don’T get me wrong since the Raspberry Pi supports UART, I squared C and SPI. We can easily add an external ADC and since many of the Arduino commands and even a couple new helpful ones are included, the Raspberry Pi can almost be considered an Arduino substitute, but Arduino projects, which only require a minimum of data processing, are not the main fields Of application for Raspberry Pi, which brings me to Python, as you can see here, it is also a programming language. There is supposedly very beginner friendly, but of course, for someone like me who used C all his life, I will need some time to get used to it. It can basically execute all functions that the C language offers, but it also comes with so called Python packages.

By searching for raspberry pi with the Python package index, we can find a few dozens of Awesome modules that we could easily implement in our own codes, including a 2d plotting package or a package that can do FFT signal and image processing. What I’m trying to say is that the Arduino is the way to go for more straightforward electronics projects, but when it comes to more data, excessive projects like a smart, mural or the mapping of an unknown environments, the Raspberry Pi is the way to go. I hope you enjoyed watching this video and learned a thing or two about the C and Python language. Also, let me know what Raspberry Pi projects you would like to see in the future on this channel.


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Last weekend we announced that we’re working on a new development environment with advanced features. Let’s take a deeper look at what is in store for the Arduino Pro IDE!

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