Rachel Cole

Rachel Cole

1623986873

Raspberry Pi's new PoE+ HAT uses too much Power!

The new PoE+ HAT has some issues, like using almost twice as much power for its own operation as the original PoE HAT. It does supply more power to the Raspberry Pi, but at least for the Pi 3 model B+ and 4 model B, does that even matter?

Mentioned in this video:

Equipment used in this video (some links are affiliate links):

Support me on Patreon: https://www.patreon.com/geerlingguy
Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Contents:

  • 00:00 - tl;dw
  • 00:53 - Thanks to GitHub sponsors!
  • 01:24 - Original PoE HAT Problems
  • 02:17 - PoE 802.3af is insufficient
  • 03:34 - New PoE+ HAT
  • 04:35 - PoE+ HAT Walkthrough
  • 05:54 - Camera connector is screwed
  • 06:45 - Other annoyances
  • 07:24 - Fan comparison
  • 08:30 - Power consumption
  • 09:51 - Stress test
  • 10:51 - USB-C power and coil whine
  • 12:08 - Final verdict
  • 13:28 - Clarification from Raspberry Pi
  • 15:16 - Thanks and outtakes

#raspberry-pi #developer

What is GEEK

Buddha Community

Raspberry Pi's new PoE+ HAT uses too much Power!

TensorFlow Lite Object Detection using Raspberry Pi and Pi Camera

I have not created the Object Detection model, I have just merely cloned Google’s Tensor Flow Lite model and followed their Raspberry Pi Tutorial which they talked about in the Readme! You don’t need to use this article if you understand everything from the Readme. I merely talk about what I did!

Prerequisites:

  • I have used a Raspberry Pi 3 Model B and PI Camera Board (3D printed a case for camera board). **I had this connected before starting and did not include this in the 90 minutes **(plenty of YouTube videos showing how to do this depending on what Pi model you have. I used a video like this a while ago!)

  • I have used my Apple Macbook which is Linux at heart and so is the Raspberry Pi. By using Apple you don’t need to install any applications to interact with the Raspberry Pi, but on Windows you do (I will explain where to go in the article if you use windows)

#raspberry-pi #object-detection #raspberry-pi-camera #tensorflow-lite #tensorflow #tensorflow lite object detection using raspberry pi and pi camera

Tools and Images to Build a Raspberry Pi n8n server

n8n-pi

Tools and Images to Build a Raspberry Pi n8n server

Introduction

The purpose of this project is to create a Raspberry Pi image preconfigured with n8n so that it runs out of the box.

What is n8n?

n8n is a no-code/low code environment used to connect and automate different systems and services. It is programmed using a series of connected nodes that receive, transform, and then transmit date from and to other nodes. Each node represents a service or system allowing these different entities to interact. All of this is done using a WebUI.

Why n8n-pi?

Whevever a new technology is released, two common barriers often prevent potential users from trying out the technology:

  1. System costs
  2. Installation & configuration challenges

The n8n-pi project eliminates these two roadblocks by preconfiguring a working system that runs on easily available, low cost hardware. For as little as $40 and a few minutes, they can have a full n8n system up and running.

Thanks!

This project would not be possible if it was not for the help of the following:

Documentation

All documentation for this project can be found at http://n8n-pi.tephlon.xyz.

Download Details:

Author: TephlonDude

GitHub: https://github.com/TephlonDude/n8n-pi

#pi #raspberry pi #raspberry #raspberry-pi

Rachel Cole

Rachel Cole

1623986873

Raspberry Pi's new PoE+ HAT uses too much Power!

The new PoE+ HAT has some issues, like using almost twice as much power for its own operation as the original PoE HAT. It does supply more power to the Raspberry Pi, but at least for the Pi 3 model B+ and 4 model B, does that even matter?

Mentioned in this video:

Equipment used in this video (some links are affiliate links):

Support me on Patreon: https://www.patreon.com/geerlingguy
Sponsor me on GitHub: https://github.com/sponsors/geerlingguy

Contents:

  • 00:00 - tl;dw
  • 00:53 - Thanks to GitHub sponsors!
  • 01:24 - Original PoE HAT Problems
  • 02:17 - PoE 802.3af is insufficient
  • 03:34 - New PoE+ HAT
  • 04:35 - PoE+ HAT Walkthrough
  • 05:54 - Camera connector is screwed
  • 06:45 - Other annoyances
  • 07:24 - Fan comparison
  • 08:30 - Power consumption
  • 09:51 - Stress test
  • 10:51 - USB-C power and coil whine
  • 12:08 - Final verdict
  • 13:28 - Clarification from Raspberry Pi
  • 15:16 - Thanks and outtakes

#raspberry-pi #developer

The Raspberry Pi 400 - A full computer in a keyboard!

The Raspberry Pi 400 has arrived in the studio, and in this video I’ll give it a review. I’ll show an unboxing of the Personal Computer Kit from Canakit, which is a great way to get started on the Pi 400. Then I’ll show off the hardware, as well as the out-of-box experience.

#raspberry pi #pi #raspberry-pi

Is Power BI Actually Useful?

The short answer, for most of you, is no. However, the complexity and capability of the products could be beneficial depending on what type of position or organization you work in.
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In my effort to answer this common question about Power BI I researched the following:
– Power BI Desktop Gateway
– Syncing on-prem SQL server data
– Syncing SharePoint Online list data
– Syncing data from an Excel workbook
– Building, and sharing a dashboard
– Inserting a Power BI visualization into PowerPoint

To get in-Depth knowledge on Power BI you can enroll for a live demo on Power BI online training

The feature spread above gave me the opportunity to explore the main features of Power BI which break down as:
– Ingesting data, building a data set
– Creating dashboard or reports with visualizations based on that data

In a nutshell Power BI is a simple concept. You take a data set, and build visualizations that answer questions about that data. For example, how many products have we sold in Category A in the last month? Quarter? Year? Power BI is especially powerful when drilling up or down in time scale.
And there are some interesting ways to visualize that data:
However, there are a number of drawbacks to the current product that prevented me from being able to fold these visualizations into our existing business processes.

  1. Integration with PowerPoint is not free. This shocked me.

The most inspiring Power BI demo I saw at a Microsoft event showed a beautiful globe visualization within a PowerPoint presentation. It rendered flawlessly within PowerPoint and was a beautiful, interactive way to explore a geographically disparate data set. I was able to derive conclusions about the sales data displayed without having to look at an old, boring chart.

During the demo, nothing was mentioned about the technology required to make this embedded chart a reality. After looking into the PowerPoint integration I learned that not only was the add-in built by a third party, it was not free, and when I signed up for a free trial the add-in could barely render my Power BI visualization. The data drill up/down functionality was non-existent and not all of the visualizations were supported. Learn more from Power bi online course

  1. Only Dashboards can be shared with other users, and cannot be embedded in our organization’s community on SharePoint.

Folks in our organization spent 50% of their time in Outlook, and the rest in SharePoint, OneNote, Excel, Word, and the other applications needed for producing documents, and other work. Adding yet another destination to that list to check on how something is doing was impossible for us. Habits are extremely hard to change, and I see that consistently in our client’s organizations as well.

Because I was not able to fold in the visualizations with the PowerPoint decks we use during meetings, I had to stop presentations in the middle, navigate to Internet Explorer (because the visualizations only render well in that browser), and then go back to PowerPoint once we were done looking at the dashboard.

This broke up the flow of our meetings, and led to more distractions. I also followed up with coworkers after meetings to see if they ever visited the dashboard themselves at their desk. None of them had ever navigated to a dashboard outside of a meeting.

  1. The visualizations aren’t actually that great.

Creating visualizations that cover such a wide variety of data sets is difficult. But, the Excel team has been working on this problem for over 15 years. When I import my SharePoint or SQL data to Excel I’m able to create extremely customized Pivot Tables and Charts that show precisely the data I need to see.

I was never able to replicate visualizations from Excel in Power BI, to produce the types of visualizations I actually needed. Excel has the ability to do conditional formatting, and other customizations in charts and tables that is simply not possible with Power BI. Because of how generic the charts are, and the limited customization it looks “cool” without being functional.

In conclusion, if you have spare time and want to explore Power BI for your organization you should. However, if you are seriously thinking about how you can fold this product into your work processes, challenge yourself to build a dashboard and look at it once a week. See if you can keep that up for a month, and then think about how that change affected your work habits and whether the data analysis actually contributed value each time. At least half of you will realize that this gimmicky product is fancy, but not actually useful.

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#power bi training #power bi course #learn power bi #power bi online training #microsoft power bi training #power bi online course