development board News - Page 71 of 261 - CNX Software

May 31, 2020March 23, 2021 by Jean-Luc Aufranc (CNXSoft) - 11 Comments

Cucumber ESP32-S2 Development Board Comes with USB OTG Port, Optional Sensors

Cucumber ESP32-S2 USB OTG Development Board

Yesterday, I wrote about LilyGO TTGO ESP32-S2 WiFi IoT board, but one commenter mentioned it missed one of the key features of ESP32-S2 chip: a USB OTG port. While USB OTG is accessible through the header pins, it’s not the most convenient to use. I also quickly mentioned Cucumber ESP32-S2 development board in that post, but I did not expand too much since I thought it should only ship within Thailand. But the board does include two USB Type-C ports, one for the usual USB UART connector, and the other for USB OTG, and I found out the board is available worldwide. The board is available in multiple variants with or without sensors and PSRAM, and with external IPEX antenna or PCB antenna using ESP32-S2-WROVER(-I) or ESP32-S2-WROOM(-I) module. Cucumber specifications: Wireless Module (one of the other): ESP32-S2-WROVER with ESP32-S2, 4MB flash, 2MB PSRAM, on-board PCB antenna ESP32-S2-WROVER-I with ESP32-S2, 4MB […]

May 30, 2020May 30, 2020 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

TTGO ESP32-S2 WiFi IoT Board Comes with Optional MicroSD Card and Battery Support

All ESP32-S2 boards I’ve seen so far were from Espressif Systems themselves including ESP32-S2-Saola-1 and ESP32-S2-Kaluga-1, but LilyGO TTGO ESP32-S2 is the first third-party board for sale so far. The tiny board is somewhat similar to ESP32-S2-Saola-1 board and comes in two versions with a similar form factor, but a completely different pinout and the presence of a MicroSD card socket and a battery connector on one of the boards. The simpler board is called “ESP32-S2 ESP32-S-WOOR” and comes with ESP32-S2-WROOM module, while the one with more features is named “TTGO ESP32-S2 ESP32-S ” and features its own circuitry built around ESP32-S2 WiSoC. Both TTGO ESP32-S2 boards share many of the same specifications: SoC – Espressif Systems ESP32-S2 single-core 32-bit Tensilica LX7 processor with 320 kB SRAM, 128 kB ROM, System Memory – 8MB PSRAM Storage – 4MB flash; XY-ESP32-S only: MicroSD card socket Connectivity 2.4GHz 802.11b/g/n WiFi 4 connectivity […]

May 28, 2020July 7, 2023 by Jean-Luc Aufranc (CNXSoft) - 94 Comments

Raspberry Pi 4 Gets 8GB RAM, Raspbian 64-bit (Beta)

The Raspberry Pi 4 Model B was launched in June 2019 with Broadcom BCM2711 Arm Cortex-A72 processor coupled with either 1, 2, or 4GB LPDDR4 RAM. But there were expectations that a Raspberry Pi 4 with 8GB RAM or an 8GB eMMC flash may be eventually launched, as some of the user guides read “Product name: Raspberry Pi 4 Model B 1 GB, 2 GB, 4 GB + 8 GB variants”. We now know the answer as the Raspberry Pi Foundation has just introduced Raspberry Pi 4 with 8GB RAM. Raspberry Pi 4 8GB specifications are the same except for the RAM capacity: SoC – Broadcom BCM2711 quad-core Cortex-A72 (ARMv8) @ 1.5GHz with VideoCore VI GPU supporting OpenGL ES 3.0 graphics System Memory – 8GB LPDDR4 Storage – MicroSD card slot Video Output & Display I/F 2x micro HDMI ports up to 4Kp60 3.5mm AV port with composite video (and […]

May 24, 2020May 25, 2020 by Jean-Luc Aufranc (CNXSoft) - 33 Comments

iWave Systems i.MX8M Mini Devkit Targets Low-cost Facial Recognition Systems

iWave Systems i.MX8M Mini Board is a development platform based on an update versions of the company’s iW-RainboW-G34M-SM i.MX 8M Mini system-on-module and designed specifically for low-cost facial recognition systems thanks to NXP eIQ ML software, and MIPI display and camera. iWave Systems i.MX8M Mini (aka iW-RainboW-G34D) specifications: SoM SoC – NXP i.MX8M Mini Q/QL/D/DL/S/SL with up to 4x Cortex-A53 cores, 1x Cortex-M4F real-time core, Vivante 3D and 2D GPUs System Memory – 1GB LPDDR4 (Expandable up to 4GB) Storage – 8GB eMMC Flash (Expandable), optional 2MB QSPI Flash optional Micro SD slot Wireless – Dual-band 802.11a/b/g/n/ac WiFi 5 and Bluetooth 5.0. PMIC – BD71847AMWV i.MX8M SODIMM Carrier Board Storage – MicroSD slot Display I/F – MIPI DSI display connector Camera I/F – MIPI CSI camera connector Audio – Audio codec, 3.5mm Line In/Out jack Networking – Up to 2x Gigabit Ethernet ports (One is Optional) USB – 2x USB […]

May 20, 2020May 20, 2020 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

Ameba RTL8722DM Cortex-M33/M23 IoT Development Board Now Available for $23.90

Earlier this year, we noticed some RealTek RTK8720DN dual-band WiFi and Bluetooth 5.0 IoT modules, and quickly mentioned Ameba RTL8722DM development board available for under $50. If you found the price of the board a bit expensive for what it had to offer, the good news is that Ameba RTL8722DM Cortex-M33/M23 IoT development board is now selling for $23.90 on Seeed Studio or Good Display. Ameba RTL8722DM specifications: MCU ARMv8M Real-M300 Cortex-M33 compatible MCU @ 200MHz ARMv8M Real-M200 Cortex-M23 compatible MCU @ 20MHz Memory – 4.5MB embedded SRAM in SoC Storage – 2MB external flash Connectivity Dual-band 802.11 a/b/g/n 1×1 WiFi 4 (20/40MHz) Bluetooth 5 SIG Mesh networking Supports both central and peripheral modes Display – 8-bit LCD up to 645×645 resolution @ 30FPS or 6-bit LCD up to 527×527 resolution @ 60 FPS Audio Codec – ADC, DAC, I2S Security – Hardware cryptographic engine, Arm Trust-Zone, Secure boot, Wi-Fi […]

May 19, 2020October 28, 2020 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

Olimex ESP32-S2-Devkit-LiPo WiFi Board Consumes as Little as 2uA in Sleep Mode

When we covered ESP32 powered TTGO T-Watch-2000 smartwatch this week-end, people noted that with a 350 mAh battery, the watch would last about 3.65 days considering a 4mA drain with the screen always off, WiFI and Bluetooth off, and around 65mA when the screen is on good for about 5 hours of continuous use without Bluetooth nor WiFi. But it’s possible to make a much more-efficient ESP32-S2 Wifi board, as demonstrated by Olimex with their upcoming ESP32-32-Devkit-LiPo based on ESP32-S2-Saola-1 with circuitry to support LiPo batteries. They designed the board with an ultra-low-power power supply circuit which makes current consumption during sleep only 6uA, 4 of which are due to the battery measurement resistor divider, meaning the board should consume only 2uA in sleep mode or about 10 times less than other ESP32 Olimex boards. When reviewed Qoitech Otii power measurement & DAQ tool, we also noted power consumption could […]

May 16, 2020August 10, 2021 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

NVIDIA Jetson Developer Kits Comparison – Nano vs TX2 vs Xavier NX vs AGX Xavier

NVIDIA launched the Jetson Xavier NX developer kit yesterday, and I included a short comparison table in the announcement between Jetson Nano, TX2, Xavier NX, and AGX Xavier developer kits. But I thought it might be worthwhile to have a more detailed comparison in a separate post, so here we are. As expected, usually the more you spend on a board, the better the performance and features. The exception is Jetson TX2 which’s the same price as the new Jetson Xavier NX devkit but delivers about a fifth of the FP16 AI performance. So as today, there’s little reason to buy a TX2 board for a new project unless you need some of the required features that are missing on Xavier NX. Jean-Luc Aufranc (CNXSoft)Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and […]

May 15, 2020 by Jean-Luc Aufranc (CNXSoft) - 18 Comments

Banana Pi BPI-M4 SBC Gets 2GB RAM, Sells for $43

First unveiled in February 2019, Banana Pi BPI-M4 is a single board computer based on Realtek RTD1395 quad-core Cortex-A53 4K media processor and following Raspberry Pi 3B+ form factor pretty closely. BPI-M4 officially launched in June 2019 for just $38 with 1GB DDR4 RAM, but despite the 2GB RAM option being listed in the specification, the 2GB version of the board was not available, at least on Aliexpress. The good news is that Banana Pi BPI-M4 with 2GB RAM has just started selling for $43 plus shipping on Aliexpress, or in Taobao if you based in China. Banana Pi BPI-M4 2GB specifications: SoC – Realtek RTD1395 quad-core Arm Cortex-A53 processor with Mali-470 MP4 GPU System Memory – 2GB DDR4 RAM Storage – 8GB eMMC flash, micro SD slot up to 256GB, M.2 NVMe SSD Video Output – HDMI 2.0b port up to 4K @ 60 Hz, HDR support Video Decode […]