Raspberry Pi News - Page 90 of 154 - CNX Software

December 19, 2019December 19, 2019 by Jean-Luc Aufranc (CNXSoft) - No Comments

RAK7244 LoRaWAN Developer Gateway Combines Raspberry Pi 4 with LoRa HAT, Optional 4G LTE Connectivity

After launching RAK831 Lite LoRaWAN gateway based on Raspberry Pi 3 board in 2018, RAK Wireless introduced Pilot Gateway Pro RAK7243 gateway with the more recent Raspberry Pi 3B+ SBC earlier this year. But with the launch of Raspberry Pi 4 last June, the Raspberry Pi 3B+ has become much harder to procure, so RAK has now launched an updated LoRa gateway featuring Raspberry Pi 4 SBC together with the company’s RAK2245 Pi Hat Edition LoRaWAN gateway concentrator module. RAK7244 LoRaWAN Developer Gateway specifications: SBC – Raspberry Pi 4 Model B with 2GB RAM Connectivity LoRa RAK2245 Pi Hat LoRaWAN gateway concentrator module with 1x SX1301 baseband processor, 2x SX125x Tx/Rx front-ends LoRaWAN v1.0.2 support Support for 8 channels and spreading factors SF7 to SF12 Bands – 433MHz, 470MHz, 865MHz, 868MHz, 915MHz, 920MHz, 923MHz Tx Power: 27 dBm Max RX Sensitivity: -139dBm Cellular – Optional 4G LTE support via RAK2013 […]

December 18, 2019 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Raspberry Pi Power Management HAT Adds RTC, Battery Management, Software On/Off

If your Raspberry Pi project runs on battery, but may not need to be turned on 24/7 in order to lower power consumption, you’d have to find a way to schedule on and off times, and power off the board cleanly either when the battery is almost depleted, or your timer requires it There’s no built-in support for this in any of the Raspberry Pi boards, but Waveshare Power Management HAT can help you do just that since it adds an RTC, and enables software-controlled power timers and battery monitoring via an Arduino compatible ATmega328 MCU. Power Management HAT specifications: MCU – Microchip ATmega328P-AU MCU Storage – CAT24C32 EEPROM USB – 1x micro USB port for serial communication via CP2102 UART to TTL chip RPi Interface – 40-pin Raspberry Pi GPIO header Misc NXP PCF8523 RTC & calendar chip + CR1220 battery holder DEBUG switch (9) to either: Power directly […]

December 12, 2019December 12, 2019 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

$38 Compute Module PoE Board Works with Raspberry Pi CM3/CM3+ Modules

Compute Module PoE Board-Raspberry-Pi CM3 Compute Module

Raspberry Pi 3 Compute Module was first introduced in 2017 with CM3 and CM3L systems-on-module with or without 4GB eMMC flash for $25 and up before the company launched an update earlier this year with CM3+ modules equipped with a slightly faster processor and up to 32GB eMMC flash for $25 to $40. If you wanted to evaluate the solution for your project you’d have to spend well over $100 for either the official development kit or third-party solutions such as balenaFin which may not support all features of the modules out of the box. We previously wrote about Waveshare Compute Module IO Board Plus similar to the official devkit and going for $50 without the actual module. The company has now designed a more compact board that also supports Ethernet and PoE out of the box selling for just $37.99 plus shipping on Seeed Studio or Waveshare not including […]

December 8, 2019February 27, 2020 by Jean-Luc Aufranc (CNXSoft) - 46 Comments

ROCK Pi SATA HAT Targets ROCK Pi 4 & Raspberry Pi 4 NAS

Radxa ROCK Pi 4 is a single board computer (SBC) powered by Rockchip RK3399 hexa-core processor and inspired by Raspberry Pi 3 Model B+. The company has now designed ROCK Pi SATA HAT expansion board to design 4-bay NAS based on Raspberry Pi 4 and ROCK Pi 4. There are 3 models with support for 2, 4 or 5 drives: Dual/Quad SATA HAT connected over two USB 3.0 ports and working with both boards Penta SATA HAT connected over PCIe and compatible with ROCK Pi 4 only ROCK Pi Dual/Quad SATA HAT Specifications: 2x or 4x SATA connectors supporting 2.5″ or/and 3.5″ HDD/SSD 2x USB 3.0 port to connect to RPi 4 via one or two JMS561 USB to SATA controllers Storage Features – HDD suspend mode, UASP, software RAID 0/1/5 Misc Fan and heatsink header for Raspberry Pi 4 CPU cooling Optional PWM control fan for HDD heat dispatching […]

December 1, 2019 by Jean-Luc Aufranc (CNXSoft) - 26 Comments

Run Raspberry Pi 4 Cooler with a New Firmware & One Easy Trick

Raspberry Pi 4 launched last June with a lot of buzz as it offered much better performance, more memory, and faster I/Os compared to Raspberry Pi 3 model B+. Benchmarks confirmed the improved performance but also revealed a heatsink was necessary to ensure optimal performance under heavy loads. Some companies also launched an oversized heatsink+fan combo for the board, but it’s really over the top and absolutely not necessary unless possibly in higher room temperature (50°C?). The Raspberry Pi Foundation also worked on improving the video to lower CPU temperature and power consumption, and a few days later released a beta version of VLI firmware that dropped the temperature by 3 to 5°C. Good effort but sadly the updated VLI firmware (used for the PCIe to USB controller) also had the side-effect of much slower USB performance. A new VLI firmware was released in September offering both a lower temperature […]

November 29, 2019November 30, 2019 by Jean-Luc Aufranc (CNXSoft) - 29 Comments

Raspberry Pi 4 WiFi Fails When Setting HDMI to 2560×1440 Resolution

Raspberry Pi 4 WiFi Fail 2560x1440 Resolution

Enrico Zini was working on a digital signage solution based on Raspberry Pi 4, then he set the video output to 2560×1440, and all hell broke loose. And by that, I mean WiFi stopped working. It was not obvious at first but after a full day of debugging, trying both micro HDMI outputs, different HDMI cables, three different Raspberry Pi boards, different power adapters, Raspbian Buster and Buster Lite, different MicroSD cards… He could reproduce the problem in all conditions, all he needed to do was to set the resolution to 2560×1440, and WiFi would just stop working. Setting the resolution to 2048×1080 or lower, and all WiFi connectivity issues disappeared. He did not test at higher resolutions, and another user reported a similar problem happening at 2.4 GHz, but not at 5 GHz, albeit when setting HDMI output to 1920×1080. So it looks like interference, but as noted by […]

November 23, 2019 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

webOS OSE 2.0 Adds Support for Rapsberry Pi 4, Dual Displays, FOTA and More

Back in March 2018, LG unveiled webOS Open Source Edition optimized for Raspberry Pi 3 board. Last month, the company released a major version with webOS OSE 2.0 adding support for Raspberry Pi 4, dual displays, FOTA support and more. We missed the release at the time but caught up as LG just released a minor update with webOS OSE 2.1 a few days ago that adds a Japanese keyboard, uses journald, and provides various fixes and improvements. Some of the new features of webOS OSE 2.x include: Dual-display support which will eventually enable multi-display support for rear-seat entertainment (RSE) systems Firmware-Over-the Air (FOTA) Smack integration for enhanced security New passenger-friendly and touch input optimized Home Launcher as shown above WiFi tethering support via SoftAP Added support Raspberry Pi 4 (new reference hardware) Upgrade to Qt 5.12 and Chromium 72 webOS is generally known as an operating system for televisions, […]

November 6, 2019February 15, 2024 by Ayo Ayibiowu - 4 Comments

DepthAI Brings AI plus Depth to the Raspberry Pi (Crowdfunding)

Edge computing on the Raspberry PI has been a bit of ups and downs, especially with everyone gearing for AI in everything. The Raspberry Pi, on its own, isn’t really capable of any reliable AI applications. Typical object detection on the Raspberry Pi would get you something around 1 – 2 fps depending on the nature of your model and this because all those processing is done on the CPU. To address this poor performance of AI applications on the Raspberry Pi, AI Accelerators came to the rescue. The Intel Neural Compute Stick 2 is one such accelerator capable of somewhere around 8 – 15 fps depending on your application. The NCS2, which is based on the Myriad X VPU technology, offers so much more than the compute stick delivers, and this is something that the team behind DepthAI has exploited to create a powerful AI module for edge computing […]