Raspberry Pi | Geeks3D

How to Switch from Wayland to X11 on Raspberry Pi OS Bookworm

JeGX — Thu, 09 May 2024 15:33:01 +0000

This article explain what is Wayland and how to switch from Wayland compositor to X11 window manager on Raspberry Pi OS Bookworm.

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Quick Temperature Test of the Raspberry Pi 4 8GB

JeGX — Fri, 07 Aug 2020 13:20:05 +0000

I got the new Raspberry Pi 4 8GB few weeks ago, and I took at the same time a kit of four heat sinks designed for the RPi 4. Let’s see the processor temperature of the new RPi4 8GB with and withtout those heat sinks. 1 – Raspberry Pi 4 8GB without heat sinks At idle (with the latest Raspberry … Continue reading Quick Temperature Test of the Raspberry Pi 4 8GB »

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How to Create a Shortcut on the Raspbian Desktop

JeGX — Fri, 22 Nov 2019 12:14:21 +0000

Sounds a weird question for any Windows / macOS user but on Raspberry Pi / Raspbian, it’s not an intuitive task. Fortunately, it’s actually easy, the only required skill is to know how to use a text editor. To add a shortcut on the Raspbian desktop, create a file with the .desktop extension and name it as you want: MyKoolApp.desktop. Here is the content of … Continue reading How to Create a Shortcut on the Raspbian Desktop »

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Raspberry Pi 4: New Firmware Reduces Power Consumption and Board Temperatures

JeGX — Fri, 01 Nov 2019 16:41:55 +0000

The new Raspberry Pi 4 has two EEPROMs (electrically erasable programmable read-only memory) that store the firmware (boot loader code as well as the code of the USB 3.0 host controller VL805). In previous Raspberry Pi boards, the firmware was stored on the SD card. Few days ago, a new firmware has been released that updates the VL805 code to the version 000137ab. According … Continue reading Raspberry Pi 4: New Firmware Reduces Power Consumption and Board Temperatures »

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Raspberry Pi 4 vs Raspberry Pi 3: CPU and GPU Benchmarks (Updated with TinkerBoard CPU test)

JeGX — Mon, 30 Sep 2019 14:10:27 +0000

Here is a quick test of performances of the new Raspberry Pi 4 versus previous Raspberry Pi 3. Both Raspberry Pi boards run the latest Raspbian Buster: $ uname -a Linux raspberrypi 4.19.66-v7l+ #1253 SMP Thu Aug 15 12:02:08 BST 2019 armv7l GNU/Linux 1 – CPU Benchmark To benchmark the CPU, I used Sysbench, a cross-platform and multi-threaded benchmark tool. The installation of … Continue reading Raspberry Pi 4 vs Raspberry Pi 3: CPU and GPU Benchmarks (Updated with TinkerBoard CPU test) »

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(Tested) A Simple DIY Cooler for the Raspberry Pi 4

JeGX — Fri, 27 Sep 2019 11:43:48 +0000

Like the Raspberry Pi 3 (launched three years ago), the Raspberry Pi 4 produces a lot of heat when it runs under high CPU load. And without cooling, the RPi 4 runs hotter than the RPi 3. The Raspberry Pi 4 is connected to a 4K monitor. Here are some temperature values: – Idle state (raspbian desktop), no cooling: 60°C after 5 minutes. … Continue reading (Tested) A Simple DIY Cooler for the Raspberry Pi 4 »

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Raspberry Pi 4 Launched with a powerful 4-core CPU, 4K Video and OpenGL ES 3 support

JeGX — Wed, 26 Jun 2019 16:00:40 +0000

One year after the Raspberry Pi 3 Model B+ and three years after the original Raspberry Pi 3, the Raspberry Pi foundation has launched, two days ago, the Raspberry PI 4 Model B. The Raspberry Pi 4 (or RPi4) looks promising according to the specifications: the RPi4 is built around a new SoC (System on Chip): the BCM2711 (28nm) that packs the CPU, the … Continue reading Raspberry Pi 4 Launched with a powerful 4-core CPU, 4K Video and OpenGL ES 3 support »

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Pi Day: Raspberry Pi 3 Model B+ Launched

JeGX — Wed, 14 Mar 2018 11:18:59 +0000

To celebrate the Pi day (3/14/2018), the Raspberry Pi Foundation has launched the Raspberry Pi 3 Model B+, a refresh version of the previous Raspberry Pi 3 board launched two years ago. Main features of the RPi 3 B+: SoC: Broadcom BCM2837B0 CPU: 64-bit quad-core ARM Cortex A53 (ARMv8) @ 1.4GHz Dual-band 802.11ac wireless LAN and Bluetooth 4.2 LAN: Gigabit Ethernet (LAN7515 chip) Improved thermal … Continue reading Pi Day: Raspberry Pi 3 Model B+ Launched »

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(Tested) ASUS Tinker Board vs Raspberry Pi 3: CPU and GPU Benchmarks

JeGX — Fri, 12 Jan 2018 14:16:06 +0000

According to the specifications, the Tinker Board is more powerful than the Raspberry Pi 3. Let’s see if it’s true with several CPU/GPU benchmarks. Hardware / Software details: – HW: Tinker Board rev 1.2, default clock speed – SW: Tinker OS 2.0.4 – HW: Raspberry Pi 3 Model B v1.2, default clock speed – SW: Raspbian Stretch (v2017-11-29) 1 – CPU Benchmark 1.1 – … Continue reading (Tested) ASUS Tinker Board vs Raspberry Pi 3: CPU and GPU Benchmarks »

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Raspberry Pi Sense HAT: a Simple Weather Station

JeGX — Fri, 05 May 2017 11:14:45 +0000

In this article we have discovered the Sense HAT. Now let’s see how we can program it. In this article, we will see how to get data from the environmental sensors (temperature, pressure, humidity) to create a simple weather station. The Sense HAT comes with a Python library developed by the Raspberry Pi team. This Python library, called sense_hat, is available HERE. The API reference … Continue reading Raspberry Pi Sense HAT: a Simple Weather Station »

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Discovering the Raspberry Pi Sense HAT

JeGX — Mon, 19 Dec 2016 12:26:59 +0000

The Raspberry Pi Sense HAT is a really cool piece of hardware: it’s an all-in-one board that comes with several sensors and even a LED matrix. Let’s discover it. 1 – Meet the Sense HAT According to the homepage, the Sense HAT is an add-on board for Raspberry Pi, designed and developed for the Astro Pi mission. The Sense HAT comes with the following sensors: … Continue reading Discovering the Raspberry Pi Sense HAT »

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Rendering Real Time 3D Graphics on a 32×32 RGB LED Matrix Panel with a Raspberry Pi and GeeXLab (Updated)

JeGX — Mon, 12 Dec 2016 16:52:40 +0000

In the previous article, I explained how to control the color of a particular LED of the RGB LED matrix panel. Thanks to that knowledge, you can draw simple graphics: points, circles, lines and so on. But how can we easily draw a rotating triangle? Or a mesh like a torus? Or any 3D scene? Answer in this article! GeeXLab comes with a powerful feature … Continue reading Rendering Real Time 3D Graphics on a 32×32 RGB LED Matrix Panel with a Raspberry Pi and GeeXLab (**Updated**) »

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Drawing Simple Graphics on a RGB LED Matrix Panel with a Raspberry Pi and GeeXLab

JeGX — Mon, 28 Nov 2016 16:46:43 +0000

In previous articles (HERE and HERE), we have talked about the RGB LED matrix panel as well as the RGB Matrix HAT which is the hardware interface between the LED panel and the Raspberry Pi. Today we will cover how to draw simple graphics on the LED panel. Once the RGB Matrix HAT is connected to the Raspberry Pi and to the RGB LED matrix … Continue reading Drawing Simple Graphics on a RGB LED Matrix Panel with a Raspberry Pi and GeeXLab »

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Adafruit RGB Matrix HAT: the Raspberry Pi can talk with the RGB LED Matrix Panel

JeGX — Fri, 25 Nov 2016 13:51:37 +0000

Here the second article (first one is HERE) about how to render real time 3D stuff on a RGB LED matrix panel with a Raspberry Pi. In this article, we’ll look at the hardware interface between the Raspberry Pi and the RGB LED matrix display: the RGB Matrix HAT. The RGB Matrix HAT is an additional card designed to drive RGB LED matrix panels with … Continue reading Adafruit RGB Matrix HAT: the Raspberry Pi can talk with the RGB LED Matrix Panel »

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Adafruit 32×32 RGB LED Matrix Panel 4mm Pitch Unboxing

JeGX — Mon, 21 Nov 2016 15:35:22 +0000

I’m starting a series of articles about how to render real time 2D/3D graphics on RGB LED matrix panels with a Raspberry Pi. Even if the resolution of graphics is very low (32×32 pixels for a 32×32 LED display), drawing 3D stuff on that kind of display is very cool! 1 – Overview There are several models of RGB LED matrix panels and I selected … Continue reading Adafruit 32×32 RGB LED Matrix Panel 4mm Pitch Unboxing »

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Raspbian Jessie Updated with a new Desktop Environment called PIXEL

JeGX — Thu, 29 Sep 2016 18:25:00 +0000

The Raspberry Pi team has released a new version of Raspbian Jessie that comes with a new desktop environment called PIXEL. PIXEL stands for Pi Improved Xwindows Environment, Lightweight. PIXEL follows OS X or Windows 10 desktop with a flat-design approach. Jessie has an OpenGL 2.1 driver and the version is still 2.1 Mesa 11.1.0 like on previous Jessie versions. This new version of … Continue reading Raspbian Jessie Updated with a new Desktop Environment called PIXEL »

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Raspbian Jessie May 2016 Available (Linux Kernel 4.4 + OpenGL 2.1 Mesa 11.1)

JeGX — Fri, 13 May 2016 10:03:20 +0000

The Raspberry Pi team has updated Raspbian, the official operating system for Raspberry Pi. This new version comes with Linux kernel 4.4.9 as well as an updated version of desktop OpenGL: OpenGL 2.1 Mesa 11.1.0. The OpenGL version of the previous Raspbian was OpenGL 2.1 Mesa 8.0.5 (see this article). The new Raspbian includes now Geany, a text editor for programmers. It’s part of my … Continue reading Raspbian Jessie May 2016 Available (Linux Kernel 4.4 + OpenGL 2.1 Mesa 11.1) »

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(Tested) Raspberry Pi 3 vs Raspberry Pi 2: CPU and GPU Benchmarks (+ Burn-in Test)

JeGX — Tue, 22 Mar 2016 11:49:14 +0000

The new Raspberry Pi 3 board comes with a new processor and higher clock speeds. Let’s benchmark it against the Raspberry Pi 2 board. Article index: 1 – CPU Benchmark 2 – GPU Benchmark 3 – Burn-in Test 4 – Conclusion 1 – CPU Benchmark To benchmark the CPU, I used Sysbench, a cross-platform and multi-threaded benchmark tool. The installation of Sysbench on Raspbian is … Continue reading (Tested) Raspberry Pi 3 vs Raspberry Pi 2: CPU and GPU Benchmarks (+ Burn-in Test) »

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(Test) MiniMAD: Raspberry Pi based Video Mapping Device

JeGX — Mon, 21 Mar 2016 14:43:08 +0000

1 – Overview The MiniMAD is a small device designed for simple video mapping and intended for MadMapper users. In short, a project including one or several videos is exported from MadMapper and saved on a SD-card which is consumed by the MiniMAD to project the videos. The MiniMAD is made up of two components: a Raspberry Pi 2 and an extension board with few … Continue reading (Test) MiniMAD: Raspberry Pi based Video Mapping Device »

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Raspberry Pi 3: New Quad-Core Processor and Integrated WiFi + Bluetooth

JeGX — Mon, 29 Feb 2016 14:10:59 +0000

For the fourth birthday, the Raspberry Pi foundation has launched the third iteration of the Raspberry Pi board. The new Raspberry Pi 3 is now on sale for $35 and has the following features: New SoC: Broadcom BCM2837 CPU: 64-bit quad-core ARM Cortex A53 @ 1.2GHz LAN: integrated 802.11n wireless + ethernet port integrated Bluetooth 4.1 4 x USB 2.0 ports RAM: 1GB GPU: VideoCore … Continue reading Raspberry Pi 3: New Quad-Core Processor and Integrated WiFi + Bluetooth »

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