Raspberry Pi News - Page 68 of 152 - CNX Software

February 22, 2021January 31, 2022 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Maker Pi Pico STEM board mini review with CircuitPython

In my early list of third-party Raspberry Pi RP2040 boards, I shortly mentioned Cytron Maker Pi Pico baseboard for Raspberry Pi Pico that exposes all pins via female headers, includes LEDs for all GPIOs pin, six Grove connectors, three user push-buttons, one RGB LED, a piezo buzzer, an audio jack, a MicroSD card, and an ESP-01 socket to add WiFi connectivity. The beta version sold for $5, and at the time I missed that included Raspberry Pi Pico board as well, so basically you got a free baseboard. The Malaysian company has now sent me a review sample to play around with, so let’s have a closer at the hardware and code samples for the board. Maker Pi Pico Unboxing and Specifications I received the board in Cytron package together with a pinout diagram for Raspberry Pi Pico, and we can see the latter is already soldered to Maker Pi […]

February 15, 2021February 16, 2021 by Jean-Luc Aufranc (CNXSoft) - 37 Comments

AmpliPi – A Raspberry Pi-based whole house audio amplifier (Crowdfunding)

AmpliPi Raspberry Pi Whole House Amplifier

Micro Nova has put together an open-source, whole-house audio amplifier called AmpliPi based on Raspberry Pi Compute Module 3+. It is capable of streaming four independent sources to 6 stereo output zones, expandable to up to 36 stereo output zones through daisy-chained extender units. AmpliPi specifically supports inputs from four networking streaming sources including AirPlay, Pandora, Spotify, and DLNA, as well as four analog RCA inputs for your media appliances. AmpliPi key components and features: Controller Board Carrier board fitted with Raspberry Pi Compute Module 3+ and PCM5102A & CM6206 audio DACs. It also communicates over I2C with the STM32 MCU on the Preamp board (see below) to control the muxing and amplification systems. Interfaces 10/100M Ethernet port HDMI 1.4 output 2x USB 2.0 ports, plus one internal USB port Service and console ports for maintenance and/or debugging. Preamp Board Board equipped with a 6×4 audio matrix switching system and […]

February 11, 2021March 1, 2021 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Software configuration tips for Raspberry Pi clusters & parallel-ssh command

I missed that linux.conf.au 2021 took place on January 23-25 2021, and while browsing the schedule I noticed a talk entitled “Building Raspberry Pi Supercomputers” by Federico Lucifredi, Product Management Director for Ceph Storage at Red Hat. In the talk, he mostly focuses on the software part, and besides some basic steps, I learned about some new commands that be useful to people managing clusters of Raspberry Pi or other Linux boards or hosts. Configuring a cluster He used Picocluster image in his example, but for people wanting to use 64-bit OS, he recommends Ubuntu or Fedora images until Raspberry Pi OS 64-bit becomes stable. The first part of the configuration is making sure all the main user is the same on all board, disable SSH for root, and configure run levels (X not needed on clusters). Networking is configured with fixed IP addresses for Ethernet, and DHCP for WiFi. […]

February 10, 2021February 10, 2021 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

Ready! Model 100 is a retro computer shell for Raspberry Pi, SBCs, Nano/Pico-ITX boards (Crowdfunding)

Ready Model 100 Raspberry Pi SBC Computer Shell

We recently wrote about Devterm, a modular, retro-looking portable computer that looks like a typewriter with an extra-wide display, and takes Raspberry Pi CM3-series modules, or other compatible modules made by Clockwork based on Rockchip RK3399 or Allwinner H6. If you’re into this kind of device, but would like to use your own Raspberry Pi, another SBC, an Intel NUC motherboard, a Nano/Pico-ITX board, or even your smartphone, Ready! Model 100 single board computer expansion system may be worth looking into. Ready! Model 100 key features and specifications: Compatibility – Accommodates any hardware using 5V or 12V power input including smartphones, or arm or x86 SBCs such as Raspberry Pi 4, and compact motherboard following NUC, 4×4, 5×5, or Nano/Pico ITX form factors. Storage – Space for SSD Display – 8.8-inch 1920×480 “3xVGA” HDMI Touchscreen Video Output – HDMI (if dual HDMI supported on SBC) Audio – 10W stereo speaker […]

February 9, 2021February 9, 2021 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

iPod Classic given new life with Raspberry Pi Zero W & Spotify

Guy Dupont got a bunch of 2004, fourth-generation iPod Classic MP3 players from his mother-in-law, and instead of playing MP3 files on the media players, he decided to repurpose one with a Raspberry Pi Zero W to be able to stream music from Spotify over WiFi. The resulting project is called sPot (ess-pot), and looks just like an original iPod, but it’s a Linux device that can stream/search via Spotify with a UI written in Python and based on the original iPod experience. But apart from the enclosure, and the original “click wheel” there’s not much left from the original design. Besides the Raspberry Pi Zero W SBC and iPod enclosure, the sPod includesAdafruit Mini LiPoly/LiIon USB Charger and PowerBoost 1000 Basic boards for charging and power management, a 1,000mah,3.7V rechargeable li-ion battery, vibration motor discs For haptic feedback, a 2-inch Adafruit TFT display, and a few other components, wires, […]

February 8, 2021February 8, 2021 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

Lisperati1000 Lisp portable programming workstation features Raspberry Pi Zero W, ultra-wide display

Lisperati1000 Lisp Programming Ultra-wide display

Conrad Barski (Lisperati) wanted a portable “workstation” to write in Lisp and see all those parentheses. Since there aren’t many devices with an ultra-wide display, he decided to build his own “Lisperati1000” ultra-compact Lisp programming workstation powered by a Raspberry Pi Zero W, and equipped with an ultra-wide 1920×480 8.8-inch display, a compact keyboard made of Cherry Brown switches, and a 4,400mAh dual battery all housed in a 3D printed enclosure. When Conrad first showcased his little handheld computer on Twitter, he first claimed only 3 will ever be built, but think quickly got out of control with the project being featured on Hacker News, and he changed his mind after seeing the popularity of the DIY computer. UPDATE: Due to high demand, I have decided to fund a project to release this as a kit. If you are an electrical engineer and/or know about machining Aluminum, please get in […]

February 7, 2021February 7, 2021 by Saumitra Jagdale - No Comments

Person Detection on Raspberry Pi Pico with ArduCAM and TensorFlow Lite

ArduCAM is popular for camera-based applications with various boards ranging from Arduino to Raspberry Pi. We also saw the company’s tiny coin-sized Raspberry Pi compatible module 5 years ago. Now, it also supports the newly launched Raspberry Pi Pico for real-time video applications. Raspberry Pi Pico is compatible with the ArduCAM Mini 2MP Plus camera featuring an OV2640 2MP CMOS image sensor that supports automatic image control functions including Automatic Exposure Control (AEC) and Automatic Gain Control(AGC). The camera also comes with an onboard JPEG encoder for image compression. The company has provided a Github repository with two demo applications: a video streaming application and an example for basic person detection with the probability percentage of detection. There is also an option of directly using the UF2 files for flashing with Raspberry Pi Pico, if you don’t want to build the demo from the source code yourself. The application runs […]

February 5, 2021 by Saumitra Jagdale - 12 Comments

Raspberry Pi Pico Gets supports for Rust, RT-Thread OS and FreeRTOS

Raspberry Pi Pico Rust RT-Thread FreeRTOS

In January end, we saw the launch of Raspberry Pi Pico equipped with an RP2040 dual-core Cortex-M0+ microcontroller working up to 133 MHz with official support for MicroPython and C. In this feature, we will be discussing the Raspberry Pi Pico’s flexible software support compatible with RP2040 MCU, apart from the MicroPython, C/C++, and upcoming Arduino IDE software support. We will specifically be focusing on Rust, RT-Thread OS, and FreeRTOS support for Raspberry Pi Pico. Rust Code Running on Raspberry Pi Pico Rust language is considered fast, reliable, and secure when it comes to IoT gateways. It also opens up the option for writing extremely low-level code, such as operating system kernels or microcontroller applications. Porting Rust with RP2040 for working with Raspberry Pi Pico was seen in Jonathan Pallant’s Twitter Feed. The RP2040 comes with an external QSPI flash. The internal mask-ROM reads the programs from the external flash […]