Raspberry Pi News - Page 51 of 154 - CNX Software

January 26, 2022September 23, 2022 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

FOSDEM 2022 schedule with embedded Linux, IoT, automotive… sessions

While typically taking place in Brussels, Belgium, FOSDEM 2022 will take place online just like FOSDEM 2021 due to COVID-19 restrictions. The good news is that it means anybody can attend it live from anywhere in the world, and makes it more like “FOSDIM”, replacing European with International, in “Free and Open Source Developers’ European Meeting”. FOSDEM 2022 will take place on February 5-6 with 637 speakers, 718 events, and 103 tracks. I’ve made my own little virtual schedule below mostly with sessions from the Embedded, Mobile and Automotive devroom, but also other devrooms including “Computer Aided Modeling and Design”, “FOSS on Mobile Devices”, “Libre-Open VLSI and FPGA”, and others. Saturday, February 5, 2022 12:30 – 13:00 – Five mysteries in Embedded Linux by Josef Holzmayr Once you start out in embedded Linux, there is a lot to do. Some things are obvious, some less so. First and foremost, […]

January 25, 2022January 25, 2022 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

StackyPi – A Raspberry Pi RP2040 board with Raspberry Pi Zero form factor (Crowdfunding)

SB Components’ StackyPi is a development board based on Raspberry Pi RP2040 MCU that happens to follow the Raspberry Pi Zero form factor. The board is equipped with 8MB SPI flash for the firmware, a MicroSD card socket, a micro SB port, two buttons, and a 40-pin GPIO header that makes it compatible with some Raspberry Pi uHAT and HAT expansion boards. StackyPi specifications: MCU – Raspberry Pi RP2040 dual-core Cortex-M0+ microcontroller @ up to 133 MHz with 264KB SRAM Storage – 8MB (64Mbit) SPI flash, MicroSD card socket USB – 1x Micro USB port Expansion – 40-pin GPIO header with GPIO, I2C, UART, SPI, etc… mostly compatible with Raspberry Pi header (3.3V I/Os) Misc – Reset and Boot buttons Power Supply- 5V via Micro USB port Dimensions – 65 x 30 mm (Raspberry Pi Zero form factor) The main advantage of such as board is that it can support […]

January 19, 2022February 18, 2022 by Jean-Luc Aufranc (CNXSoft) - 13 Comments

10.1-inch RPI All-in-One PC review with Raspberry Pi 4

A couple of months ago I received “RPI All-in-One”, a 10.1-inch touchscreen display for Raspberry Pi boards, listed the specifications, checked out the package content, installed a Raspberry Pi 4 inside the display before booting my new all-in-one (AiO) PC successfully. I’ve now had time to spend more time with the PC/display and see how it performs under various conditions. I also tested HDMI and USB-C input features with a laptop and mini PC. Fan or fanless operation? After updating Raspberry Pi OS, I ran sbc-bench.sh script together with rpi-monitor to see how the Raspberry Pi 4 with 1GB RAM would perform under load with the (noisy) fan enabled.

sbc-bench v0.9.1

Installing needed tools. This may take some time. Done.
Checking cpufreq OPP. Done (results will be available in 11-15 minutes).
Executing tinymembench. Done.
Executing OpenSSL benchmark. Done.
Executing 7-zip benchmark. Done.
Checking cpufreq OPP. Done (17 minutes elapsed).

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LANGUAGE = (unset),
	LC_ALL = (unset),
	LC_ADDRESS = "en_GB.UTF-8",
	LC_NAME = "en_GB.UTF-8",
	LC_MONETARY = "en_GB.UTF-8",
	LC_PAPER = "en_GB.UTF-8",
	LC_IDENTIFICATION = "en_GB.UTF-8",
	LC_TELEPHONE = "en_GB.UTF-8",
	LC_MEASUREMENT = "en_GB.UTF-8",
	LC_TIME = "en_GB.UTF-8",
	LC_NUMERIC = "en_GB.UTF-8",
	LANG = (unset)
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
It seems neither throttling nor frequency capping has occured.

Memory performance:
memcpy: 2595.9 MB/s (0.8%)
memset: 3398.3 MB/s (2.7%)

7-zip total scores (3 consecutive runs): 5556,5650,5565

OpenSSL results:
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes  16384 bytes
aes-128-cbc      61981.49k    76335.40k    82773.25k    84199.42k    84355.75k    84393.98k
aes-128-cbc      62224.25k    76254.36k    82779.39k    84461.91k    84757.16k    84825.43k
aes-192-cbc      55900.34k    67052.89k    71500.80k    73121.11k    73362.09k    73203.71k
aes-192-cbc      55869.41k    66963.52k    71835.14k    72934.74k    73471.32k    73465.86k
aes-256-cbc      50541.63k    59834.26k    63387.14k    64413.70k    64634.88k    64760.49k
aes-256-cbc      50646.47k    59735.02k    63384.92k    64461.14k    64648.53k    64629.42k

Full results uploaded to http://ix.io/3MfY. 

In case this device is not already represented in official sbc-bench results list then please
consider submitting it at https://github.com/ThomasKaiser/sbc-bench/issues with this line:
| RPi 4 Model B Rev 1.1 / BCM2711 rev B0 | 1500 MHz | 5.10 | Bullseye armhf | 5590 | 62100 | 64690 | 2600 | 3400 | - | [http://ix.io/3MfY](http://ix.io/3MfY) |

sbc-bench v0.9.1

Installing needed tools. This may take some time. Done.

Checking cpufreq OPP. Done (results will be available in 11-15 minutes).

Executing tinymembench. Done.

Executing OpenSSL benchmark. Done.

Executing 7-zip benchmark. Done.

Checking cpufreq OPP. Done (17 minutes elapsed).

perl: warning: Setting locale failed.

perl: warning: Please check that your locale settings:

LANGUAGE = (unset),

LC_ALL = (unset),

LC_ADDRESS = "en_GB.UTF-8",

LC_NAME = "en_GB.UTF-8",

LC_MONETARY = "en_GB.UTF-8",

LC_PAPER = "en_GB.UTF-8",

LC_IDENTIFICATION = "en_GB.UTF-8",

LC_TELEPHONE = "en_GB.UTF-8",

LC_MEASUREMENT = "en_GB.UTF-8",

LC_TIME = "en_GB.UTF-8",

LC_NUMERIC = "en_GB.UTF-8",

LANG = (unset)

are supported and installed on your system.

perl: warning: Falling back to the standard locale ("C").

It seems neither throttling nor frequency capping has occured.

Memory performance:

memcpy: 2595.9 MB/s (0.8%)

memset: 3398.3 MB/s (2.7%)

7-zip total scores (3 consecutive runs): 5556,5650,5565

OpenSSL results:

type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes 16384 bytes

aes-128-cbc 61981.49k 76335.40k 82773.25k 84199.42k 84355.75k 84393.98k

aes-128-cbc 62224.25k 76254.36k 82779.39k 84461.91k 84757.16k 84825.43k

aes-192-cbc 55900.34k 67052.89k 71500.80k 73121.11k 73362.09k 73203.71k

aes-192-cbc 55869.41k 66963.52k 71835.14k 72934.74k 73471.32k 73465.86k

aes-256-cbc 50541.63k 59834.26k 63387.14k 64413.70k 64634.88k 64760.49k

aes-256-cbc 50646.47k 59735.02k 63384.92k 64461.14k 64648.53k 64629.42k

Full results uploaded to http://ix.io/3MfY.

In case this device is not already represented in official sbc-bench results list then please

consider submitting it at https://github.com/ThomasKaiser/sbc-bench/issues with this line:

| RPi 4 Model B Rev 1.1 / BCM2711 rev B0 | 1500 MHz | 5.10 | Bullseye armhf | 5590 | 62100 | 64690 | 2600 | 3400 | - | [http://ix.io/3MfY](http://ix.io/3MfY) |

No throttling was detected, and the temperature never exceeded 56°C in a room with an ambient temperature of 26°C. I then disconnect the fan, but it turns out the fan can also be easily disabled in the OSD menu […]

January 18, 2022April 4, 2022 by Jean-Luc Aufranc (CNXSoft) - 10 Comments

Raspberry Pi RP2040 is now available in quantities for 70 cents and up

Raspberry Pi RP2040 microcontroller has been available for one dollar in single quantities for about half a year, with at the time, 500- and 3400-pieces reel pricing to be determined. But Raspberry Pi Trading has now started to sell the chip in bulk with reels of 3,400 and 500 pieces directly to businesses for a unit price of respectively 70 and 80 cents via the new Raspberry Pi Direct website. Distributors have been selling reels for a while, but closer to 85 cents to 95 cents per unit. That basically means smaller quantities should still be purchased through distributors, but it makes more sense to purchase reels directly from Raspberry Pi Trading. Eben Upton also says they have enough wafer stock to produce 20 million chips with more on the way, so no shortage is expected. That contrasts with the current situation with many STM32 microcontrollers when some companies have […]

January 15, 2022January 15, 2022 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

USB add-on boards leverage Raspberry Pi Zero test pads, USB Gadget mode

I’ve just come across a few USB boards that take advantage of the Raspberry Pi Zero (W) test pads to add one or more USB Type-A ports to the board without soldering. The first one is “Catda Raspberry Pi zero WH USB expansion board” which I found on Banggood for $9.99. It’s a kit that ships with a USB Zero plug expansion module, an acrylic “isolation protection cover”, an acrylic transparent light diffraction protection cover plus M2.5 screws and nuts for mounting it to the Raspberry Pi Zero WH board, but it should work any Raspberry Pi Zero including the new Raspberry Pi Zero 2 W board since it relies on pogo pin to connect the four test pads for USB data and power, and those are in the same position for all Pi Zero boards. You can then plug it into a laptop or computer to power the board […]

January 13, 2022January 13, 2022 by Jean-Luc Aufranc (CNXSoft) - 10 Comments

Ubuntu 22.04 LTS to leverage zswap to run on Raspberry Pi 4 with 2GB RAM

Canonical used to recommend Raspberry Pi 4 with at least 4GB RAM to run Ubuntu Desktop, but Ubuntu 22.04 LTS should run more smoothly on the Raspberry Pi 4 2GB as the company has enabled zswap by default to allow the Linux operating system to run better on systems with less memory. Canonical explains that zswap is essentially a compression tool. When a process is about to be moved to the swap file, zswap compresses it and checks whether the new, smaller size still needs to be moved or if it can stay in your RAM. It is much quicker to decompress a ‘zswapped’ page than it is to access the swap file so this is a great way of getting more bang for your buck from systems with smaller amounts of RAM. The good news is that you don’t even need to wait for Ubuntu 22.04 LTS to come […]

January 13, 2022 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Raspberry Pi CM4 Nano industrial mini PC supports wide temperature range, 12-18V DC input

If you ever wanted a mini PC similar to Raspberry Pi 4 but working within a wider temperature range and supply voltage, as well as a few extra features, the Raspberry Pi CM4 Nano industrial mini PC with a metal enclosure might be worth looking at. Based on the EDATEC CM4 Nano carrier board, the mini PC supports Raspberry Pi CM4 with up to 8GB RAM, 32GB storage, optional WiFi 5 and Bluetooth 5.0, and offers one HDMI port, a flat cable HDMI + Touchscreen connector, Gigabit Ethernet, three USB 3.0 ports and more. It works in settings with -25 to +60°C ambient temperature and offers a 12-18V DC input. EDATEC (Raspberry Pi) CM4 Nano specifications compared to Raspberry Pi 4 SBC: The company uses the Raspberry Pi OS image for the board plus a Board Support Package (BSP) specific to CM4 Nano to support extra features like the RTC: […]

January 5, 2022 by Jean-Luc Aufranc (CNXSoft) - 29 Comments

Raspberry Pi CM4 carrier board comes with 5x SATA, 4x GbE, 2x HDMI, RS-485 interfaces

Axzez interceptor Raspberry Pi CM4 carrier board

We just wrote that Wiretrustee carrier board for Raspberry Pi CM4 with four SATA interfaces was canceled and made open-source hardware a few days ago, but the Axzez Interceptor carrier board is offering a solution that is somewhat similar with 5x SATA ports and designed for NAS, NVR, IoT, and Managed Switch applications. The Interceptor Carrier Board for Raspberry Pi CM4 notably includes two 4Kp60 capable HDMI ports, 5x SATA ports, 4x RJ45 Gigabit Ethernet ports, 4x USB 2.0 interfaces, RS-485, and is powered via an ATX-24 connector, with a Mini-ITX adapter in the works. Axzez Interceptor specifications: Compatible SoM – Raspberry Pi Compute Module 4 Storage Support for 5x SATA HDD/SSD via JMicron JMB585 PCIe to SATA controller Supports software RAID 0, 1, 5, 6 or 10 HDD sleep/standby Video Output – 2x full-size HDMI 2.0 connectors (4Kp60) Networking – 4x Gigabit Ethernet ports via Realtek RTL8367RB switch; programable […]