You searched for Raspberry Pi form factor - Page 67 of 83 - CNX Software

Adafruit Feather RP2040 RFM95 LoRa Radio

April 10, 2023April 10, 2023

Adafruit Feather RP2040 with RFM95 LoRa Radio launched for low power long range IoT communication

Adafruit has designed a new variant of the Feather RP2040 board with the “Adafruit Feather RP2040 with RFM95 LoRa Radio” featuring a 900 MHz RFM95 “RadioFruit” module and following the “Adafruit Feather RP2040 with DVI Output Port” that we covered last week. The board ships with 8 MB of QSPI flash, supports USB-C or LiPo battery power, is offered in the familiar Feather form factor, and the built-in RFM95 module supports 433 MHz, 868MHz, and 915MHz frequencies, selectable by firmware, for global coverage. Adafruit Feather RP2040 with RFM95 LoRa Radio specifications: MCU – Raspberry Pi RP2040 dual-core Arm Cortex M0+ microcontroller @ 133 MHz with 264 KB RAM Storage – 8MB SPI flash RFM95 LoRa wireless module Semtech SX127x LoRa transceiver Frequency bands – License-free ISM bands: ITU “Europe” @ 433MHz and ITU “Americas” @ 900MHz. (CNXSoft: it looks 900 MHz here means 868 MHz (EU) and 915 MHz (US), […]

April 6, 2023

$15 Adafruit Feather RP2040 with DVI Output Port connects to your HDMI TV or monitor

“Adafruit Feather RP2040 with DVI Output Port” is another Raspberry Pi RP2040 board with an HDMI port that can output DVI video signal (no audio) to most TVs or monitors with an HDMI input port thanks to the PicoDVI project. The board builds upon the company’s Adafruit Feather RP2040 with the HDMI port adding just a few dollars. Adafruit Feather RP2040 with DVI Output Port specifications: MCU – Raspberry Pi RP2040 dual-core Arm Cortex M0+ microcontroller ~125 MHz (but it should be overclocked for DVI output) with 264 KB RAM Storage – 8MB SPI flash Video Output – 1x HDMI port for DVI output up to 320×240 or 400×240 resolution with 16-bit pixels, I2C signals to read EDID data, plus CEC and Utility pads broken out USB – 1x USB Type-C port I/Os Adafruit Feather compatible headers Up to 21x GPIOs 2x I2C, 2x SPI, 2x UART 4x 12-bit ADC […]

ZBMINI Extreme Zigbee smart switch review with Home Assistant

SONOFF has rolled out smart switches in the market for years, and for each iteration, they make their devices smaller and more capable. The latest ZBMINI Extreme Zigbee Smart Switch or ZBMINIL2 or ZBMINI Extreme for shorts is what we will review today. Take note that there are both Zigbee and Wifi versions that come with the same form factor, we will walk through the Zigbee version first and we will review the WiFi version – SONOFF MINI Extreme (MINIR4) – later on. The ZBMINI Extreme is designed to work without a Neutral (N) line. Those who have difficulty wiring the N line to the switch will definitely love this. In many locations, the Neutral (N) line is not wired and would require a lot of work and expenses for cabling. SONOFF ZBMINI Extreme eases that challenge since there’s no need for the Neutral wire at all. This review will […]

February 22, 2023February 22, 2023

Embit EMB-LR1280-mPCIe-4x is a 2.4GHz LoRa mPCIe module based on Semtech SX1280 chipset

Embit EMB-LR1280-mPCIe-4x is an mPCIe (mini PCIe) module based on four Semtech SX1280 2.4 GHz LoRa transceivers and designed for OEM gateways that can work worldwide thanks to the use of the 2.4GHz ISM band and supports ranging. We first covered 2.4GHz LoRa and the SX1280 transceiver two years ago as a solution to design region-independent products specially suited to maritime and intercontinental logistics applications. We haven’t seen it used that much although we covered an ESP32 board with SX1280 last year, and it turns out that Italian company Embit has also made a mPCIe module based on the SX1280 chipset. Embit EMB-LR1280-mPCIe-4x specifications: LoRa connectivity Chipsets – 4x Semtech SX1280 transceiver with 3x LoRa Rx Channels + 1x LoRa Tx Modulation – LoRa Spread Spectrum Frequency – 2.4 GHz ISM band Frequency Range – 2400 to 2500 MHz RF Output power – Up to +12 dBm Sensitivity -129 dBm […]

February 10, 2023

Balthazar – An open-source hardware modular RISC-V, Arm, or FPGA laptop

The Balthazar Personal Computing Device (BPCD) is an open-source hardware 13.3-inch laptop with a RISC-V, Arm, or FPGA module and designed to be upgradable, expandable, and sustainable. The developers say the laptop is based on a few concepts inspired by the EOMA68 project. The EOMA68 is a CPU module based on the PCMCIA form factor, and an Allwinner A20 EOMA68 module was showcased in a prototype of the Rhombus Tech 15.6-inch Libre Laptop but I don’t think the project was ever manufactured. Balthazar laptop features: SoM with RISC-V, FPGA, or Arm Cortex-A7x processor plus memory and flash Storage – SATA SSD, eSATA connector, microSD card socket Display – 13.3-inch non-glare display Video Output – HDMI Audio – Speakers, detachable microphone array Camera – Detachable webcam Connectivity – Ethernet, WiFi USB – 2x USB 3.0 ports, Micro USB OTG port, Micro USB port User input Waterproof keyboard with an illuminated track-point […]

Elecrow CrowBot BOLT & Game Controller Assembled

December 5, 2022December 5, 2022

Getting Started with CrowBot BOLT smart robot car

CrowBot BOLT is a smart robot car based on an ESP32 wireless microcontroller and designed for the education market with the ability to program the robot with visual programming, Arduino, or MicroPython. Elecrow sent me a sample of the CrowBot BOLT kit for evaluation so I’ll have a look at the hardware, show how to assemble it, showcase the features of the built-in firmware, and demonstrate how to program the robot with visual programming, Arduino, and MicroPython using some of the provided code samples. CrowBot BOLT unboxing The package lists some of the highlights with 16 teaching courses, support for multiple programming platforms, scalability with Grove connectors, and the inclusion of the Joystick that’s also programmable. The CrowBot BOLT comes as a kit so there will need to be some work to do to assemble the robot, but no soldering is required (in normal cases, more on that later). The […]

November 8, 2022November 8, 2022

ODROID-N2L is a smaller, low-cost variant of ODROID-N2+ Arm SBC

ODROID-N2L SBC is a smaller and cheaper version of the ODROID-N2+ single board computer powered by an Amlogic S922X hexa-core Cortex-A73/A53 processor and offered with 2GB or 4GB single-chip LPDDR4X memory. While the ODROID-N2+ is the most popular board from Hardkernel, it’s also fairly larger than most hobbyist SBCs on the market, and following requests from customers, the company designed the ODROID-N2L with a compact form factor that is smaller than Raspberry Pi Model B SBCs and sold at a lower price at the cost of missing some of the features of its big brother. ODROID-N2L specifications: SoC – Amlogic S922X hexa-core big.LITTLE processor with 4x Arm Cortex A73 cores @ up to 2,208/2,400 MHz, 2x Arm Cortex A53 cores @ 1,908/2,016GHz, Arm Mali-G52 GPU @ 846MHz; 12nm manufacturing process System Memory – 2GB or 4GB LPDDR4 @ 3216 MT/s Storage – eMMC flash module socket up to 128GB, microSD […]

November 4, 2022November 4, 2022

b-parasite Bluetooth LE plant sensor gets Zigbee support

rbaron’s b-parasite is an open-source hardware Bluetooth LE plant watering sensor that can measure soil moisture and ambient temperature/humidity/light and works with ESPHome, Home Assistant, or any macOS or Linux platforms including the Raspberry Pi boards. It is based nRF52840 multi-protocol wireless microcontroller, so stanvn decided to add Zigbee support to the b-parasite through the “Zigbee Plant Sensor” firmware based on the Nordic Semi nRF5 SDK for nRF52 series of SoCs and working with Zigbee2MQTT. Let’s have a look at b-parasite hardware specifications first: Wireless MCU – Nordic Semi nRF52840 Arm Cortex-M4F multi-protocol wireless microcontroller with Bluetooth LE 5.0 and 802.15.4 (Zigbee/Thread) radios, 1024 KB flash, 256KB SRAM Sensors Capacitive soil moisture sensor Sensirion SHTC3 temperature and humidity sensor ALS-PT19 light sensor Power – ~200 mAh CR2032 coin-cell battery estimated to last for a couple of years with readings every 10 minutes The GitHub repository for the board contains the […]