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Raspberry Pi

413 posts
The new Raspberry Pi 4 will not fit in any of the enclosures I have at hand and while doing preparation for a RoadTest I found that my Pi was overheating and throttling back.  A quick web search did not find what was desired and besides designing one seemed like a good learning opportunity.  The resulting design, done in Fusion 360, has the following features: Pi 3 also fits the enclosure Snap fit with no screws Base enclosure has a plain, solid top Camera slot can  be added t ...
A Raspberry PI Zero W Bluetooth     My wife liked my Bluetooth enabled speaker, and rather than buying another one I decided to build one for myself.   Looking in my collection of stuff, I found the following useful items:   Raspberry Pi Zero W Pimoroni pHAT DAC 2x40 pins 3.5mm male to male 8GB microSDHC   A quick search of the internet found a helpful blog site called "Page Fault Blog" authored by Sami Pietikäinen.   Sami, provides instructions on construct ...
Hi, I've finished a new din rail enclosure set for the new Raspberry Pi 4B     ...
With the advent of the new SoC as part of the Raspberry Pi 4, we have also brought with it a USB 3.0 connection amidst other things. Part of this functionality requires certain high-speed pathways from the processor, and those allow for a standard called PCI Express.   Those of you who are familiar with typical Personal Computers (PC) will be familiar with PCIe, especially if you build your own computer. It's the current standard used for expansion hardware, and allows connections to WiFi, ...
At the time I'm writing this, I say the Pi 4 runs hot, YMMV  This has has been reported many places, including cstanton Christopher's nice benchmark article: Benchmarking the Raspberry Pi 4 Model B Tom's hardware has some nice tests, checking to see what overclocking it will do. https://www.tomshardware.com/reviews/raspberry-pi-4-b-overclocking,6188.html   When I bought my new Pi 4, I also bought the official new Pi 4 case from raspberrypi.org.  Why?  Because the Ethernet ...
Reddit user xCP23x managed to take these awesome shots of the Raspberry Pi 4 Model B with an X-Ray machine, don't they look cool?!           We already had thermal images, wish x-ray images could be more of a regular thing! What do you think? ...
Raspberry Pi 4 Q & A Technical Specifications | GPIO Pin Out | Benchmark Tests | Comparison Chart | FAQ | Quiz | Pi Accessories | Pi Projects | RoadTest | Q & A   The Raspberry Pi 4 has arrived!   To help those who might be new to Pi, or even to expand the knowledge of those who have experience with this wildly popular SBC, I had a chat with Hari Kalyanaraman, Global Head of Single Board Computers for Premier Farnell, which has been involved with Pi nearly from the beg ...
In a post about accessing Amazon Web Services from Node-RED that I wrote for another device, I claimed that it would also work on a Raspberry Pi. I wrote that without testing. I guess I'll have to put the money where the mouth is, and show that the claim is true. Let's install Node-RED on a Pi and communicate with Amazon Web Services. image: action capture of AWS IoT Core's MQTT Test page shooting a message to the Node-RED running on YOUR! Raspberry Pi     Starting Position: Fre ...
You probably have heard a lot about deep learning and AI and its impact on every aspect of our lives. So if you are inquisitive and excited to try your hand at developing a fun application that leverages deep learning and more importantly deploy it on a Raspberry Pi, this post is for you. Of course, there are lots of ways to get started with deep learning and then deploy the trained network on your desktop or on the cloud for inference. But, the path to deploying a deep learning algorithm to a ...
Introduction Fed up of leaving my Pi’s exposed, I was on the lookout for a Pi enclosure that would have space for additional circuitry. I frequently need a decent enclosure that doesn’t look out of place in a factory, not only suitable for deployments in industrial control panels, but also for home use and general experimentation too.   I recently purchased a new Pi 3 Model B+, and it was a good opportunity to look for a suitable enclosure. The Phoenix Contact RPI-BC seemed att ...
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 ...

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