TOPIC: Raspberry PI

Raspberry PI 1 year 10 months ago #102

  • MichaelV
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OK following presentation;
Here is what you need to begin:
A Raspberry pi 3 model B
The heat sinks kit
A power supply, micro USB, BUT 2500mA
A Micro SD card (class 10, faster, is better)
The total should run you around $50-60 and you have a decent desktop computer anyway that can do all kind of documents (text, presentations, spreadsheets, emails, database) surf the web and more.

Here are useful links
Raspberrypi.org
Adafruit.com
Nodered.org
Python.org; Micropython.org
Google and Youtube

How to start, get a keyboard and mouse (USB at first, but later can be bluetooth)
Plug it into some kind of HDMI display
Use a computer to download a package called NOOBS from the raspberry pi website
Format your SD Card (see instructions on Raspberry pi website)
Copy NOOBS to your Micro SD card.
Insert it into the Pi (The PI will need one permanently as it uses it for everything, storage and OS)
Plug it, and voila, (you want to pick Raspbian at first boot, there are other possibilities, but I don't know about them) you now have a functional Raspberry pi, and it comes with all the software I showed (scratch (for kids), node-red, Python 2 and 3
Use your imagination to create whatever. Remember Inputs Outputs are not all powerful, beware of shorting them.

To use a DAC (having an analog output, other than PWM), see here (that's one example, there may be many other ways, notably to slave an arduino or similar)
To use an ADC, Reading analog inputs), see here.

The latest desktop I showed is here, if it doesn't come with your Pi.

For more advanced connection with Arduinos or similar, and more, see here. He loads a few libraries into node red, and Firmanta onto the arduino, so that's not "out of the box" but it shouldn't be too hard, just follow instructions mostly.
There are also other ways to interface through the GPIO, and program the arduino in python, needs libraries and more.

There really are tons of different resources on the internet. I won't list many, The links I showed and google will really give you a lot of stuff, more dedicated to what exactly you're looking for.
Last Edit: 1 year 10 months ago by MichaelV.
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Raspberry PI 1 year 10 months ago #103

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Here is an application, of which you should obviously see the interest relating to machining:


And bonus, it is presented by our former governator, neat!
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Raspberry PI 1 year 9 months ago #122

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Popular Mechanics , November 2016 , pg 93 : shows how to use the raspberry as an internet cloud .
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Raspberry PI 1 year 6 months ago #131

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$9.00 computer :
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