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Raspberry Pi

403 posts
MQTT  MQTT is a machine-to-machine (M2M) data transfer protocol . MQTT was created with the goal of collecting data from many devices and then transporting that data to the IT infrastructure. It is lightweight, and therefore ideal for remote monitoring, especially in M2M connections that require a small code footprint or where network bandwidth is limited.   How MQTT work    MQTT is a publish/subscribe protocol that allows edge-of-network devices to publish to a broker. C ...
fmilburn

Pi Day

Posted by fmilburn Top Member Mar 15, 2019
There are only a few more hours left on Pi Day here in the Pacific NW and I am pecking something out on my tablet as I am away from my computer. I actually use a Raspberry Pi quite a bit for my hobby of tracking ships that go by using AIS but realize I have only made a couple of short posts here on element 14.   I used my winnings from a Project 14 contest to make an AIS ship tracker using a Pi and the official display.   Raspberry Pi with dAISy Hat running OpenCPN on Official 7" Dis ...
mconners

Some of my Ras Pi Blogs

Posted by mconners Top Member Mar 14, 2019
I had done some fun Ras Pi Blog posts in the past, here are a few highlights:     Ultra Sonic Distance Sensor Ping))) Me!!!     Photo Sensor Reading a photo sensor with the Raspberry Pi B+     Passive Infrared sensor PIR-fect   X Windows on the Raspberry Pi Taking Advantage of X Windows on Raspberry Pi   Enjoy!   Mike ...
This project demonstrates how to implement a PID based DC motor controller using Raspberry Pi. DC motor controller program is developed using Python. It consists of a GUI, RPM measuring, error detector, PID controller functions, and PWM generation function. The PID based closed-loop DC motor control system is one that determines a difference in the required speed and actual motor speed and creates a correction control signal to remove the error. To learn more about PID controller and DC Motor, g ...
This project is done with Open Source Computer Vision Library (OpenCV). OpenCV was designed for computational efficiency and with a strong focus on real-time applications. So, it's perfect for real-time face recognition using a camera. To create a complete project on Face Recognition, we must work on 3 very distinct phases:Face detection and data gathering, train the recognizer and face recognition. we will simply create a data-set, where we will store images for each id, a group of photos that ...
Recently I came across the nanonets.io website which provides APIs for image classification and detection. The one thing that caught my eye is the ease of use. Whenever you work around AI, it involves two steps, first is the training where a model is created from known data sets and the second phase involves the classification of unknown data by using the obtained model. The model’s accuracy increases as the training data sets size and quality increases. This is important because the image ...
  Next Biggest Breakthrough for Raspberry Pi is here!       Today I successfully compiled OpenCL on raspberry pi 3, Opening the door for numerous GPU possibilities for Raspberry Pi, Love the performance in FFMPEG(1080p rendering) and now looking forward to Deep-Learning applications on this little beast.       VC4CL is a newer effort bringing OpenCL to the Broadcom VideoCore IV GPUs as found in the Raspberry Pi boards. VC4CL implements OpenCL 1.2 for the Vid ...
This was a great article to read - https://www.techrepublic.com/article/inside-the-raspberry-pi-the-story-of-the-35-computer-that-changed-the-world/   The highlight for Pi fan in me, was to hear it from the horse's mouth on why Raspberry Pi got that name and it is definitely an interesting story. ...
The good folks at the Raspberry Pi Foundation will launch a new magazine called Wireframe on November 8th, 2018 which is dedicated to showcasing Indie Video Games industry as well as including reviews, how the top games are made and how to make your own games.  This is quite timely since it is something I am personally interested in and currently working on.   For a limited time, you can get a free hard copy of the magazine shipped to you; cost $2 for shipping to Cali in the US.  ...
  More detailed information: https://www.hackster.io/8bitsandabyte/the-goodbye-machine-automate-your-goodbyes-fc0ea7 ...
Full build video:   Project details: https://www.hackster.io/8bitsandabyte/project-boxboom-b592ef ...
Arsenij Pichugin’s ZeroPhone is designed around the Raspberry Pi Zero, an Arduino microcontroller, and the ESP8266 module. (Image credit: Arsenij Pichugin via Crowd Supply)   I thought this was a fantastic use of a Raspberry Pi Zero, I had to mention it.   Arsenij Pichugin debuted his ZeroPhone in January of last year and was touted as a $50 open-source smartphone you could build yourself without all the hassles of using a carrier-based phone. A year later, the technology has ma ...
I'm building a SCPI programmable Lab switch with a Raspberry Pi and PiFace Digital. Communication is over TCP/IP. In this post: the LabVIEW drivers   What is this Lab Switch?  This is a lab instrument. A switch that can be controlled via commands, over the network. The switch hardware is a combination of two off-the-shelf components: a Raspberry Pi and a PiFace Digital. All inputs and outputs of the PiFace Digital are accessable via commands. You can read the inputs and set th ...
Test Instrumentation Enter Your Electronics & Design Project for a chance to win a Grand Prize for Originality, a Tool Set, and a $100 Shopping Cart! Back to The Project14 homepage Project14 Home Monthly Themes Monthly Theme Poll   I'm building a SCPI electronics lab instrument for Linux. This post builds up on part 4: TCP/IP SCPI and Instrument Service. I've now completed both read and write functionality.   What Was Missing from post 4?  The previous post had both ...
This very short blog post briefly discusses a simple project that allows for toy robot arms to be controlled using gestures. It had a serious purpose; it was intended to show latency.   However, it was also a bit of fun. There is immense pleasure in destroying Lego structures with a mere wave of the hand! There isn't a lot of documentation for this project here - this blog post is just to provide some ideas. To be honest it was quite straightforward, and components of it are documented in ...

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