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PiTalk 4G HAT for Raspberry Pi / 4G USB dongle targets M2M and IoT applications (Crowdfunding)

PiTalk is a 4G cellular connectivity solution based on Quectel EG25-G LTE Cat 4 module intended for M2M and IoT applications, and available either as a Raspberry Pi HAT or as a USB dongle. There’s also a PiTalk 2G HAT, but we’ll focus on the 4G hardware in this article. PiTalk supports data rates up to 150 Mbps downlink and 50 Mbps uplink, integrates GNSS support, and as its name implies you can also make and receive calls, or send/receive SMS messages for the device provide you connect a display, speaker, and microphone to the Raspberry Pi or other host device. PiTalk 4G IoT HAT specifications: Quectel EG25-G 4G LTE cellular  module: Cellular 3G and 4G LTE with 2G fallback Max. 150Mbps DL/ 50Mbps UL Global bands support 4G LTE-FDD: B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28 4G LTE-TDD: B38/B39/B40/B41 3G WCDMA: B1/B2/B4/B5/B6/B8/B19 2G GSM: B2/B3/B5/B8 GNSS – Qualcomm IZat location technology Gen8C Lite (GPS, GLONASS, […]

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This is what a 100 µAh micro-battery looks like

Electronic components have shrunk a lot over the year, but batteries are usually one of the larger items in a design. ITEN changes that with solid state lithium-ion micro-batteries in the shape of SMD components with up to 100 µAh capacity. This is clearly not going to power your next smartphone, but ITEM micro-batteries could be found in ultra-low-power sensors potentially replacing non-rechargeable coin cell batteries with much higher capacities (e,g. 100 mAh). ITEN says their solid-state micro-batteries are superior to coin cell batteries because those are polluting, difficult to assemble on PCB, costly to recycle and require periodic maintenance once a battery is depleted. In addition, some low-power embedded systems still require high current pulses for instance to drive RF transceivers or actuators leading hardware engineers to rely on oversized coin cell batteries as those can only deliver small currents. The carbon footprint of such batteries is claimed to […]

Khadas Edge2 Arm mini PC
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Radxa CM5 – A Rockchip RK3588S module (somewhat) compatible with Raspberry Pi CM4

Radxa has been working on the ROCK 5 Compute Module (aka Radxa CM5) system-on-module compatible with Raspberry Pi CM4, but based on the more powerful Rockchip RK3588S octa-core Cortex-A76/A55 SoC. Just like the Raspberry Pi Compute Module 4, it comes in a 55 x 40mm form factor, but instead of just two high-density 100-pin board-to-board connectors, the module includes three to cater for the additional I/Os from the Rockchip processor, just like they did for the Radxa CM3 equipped with a Rockchip RK3566 processor. Radxa CM5 specifications: SoC – Rockchip RK3588S octa-core processor with 4x Cortex‑A76  cores @ up to 2.4GHz, 4x Cortex‑A55 core @ 1.8GHz Arm Mali-G610 MP4 “Odin” GPU Video decoder – 8Kp60 H.265, VP9, AVS2, 8Kp30 H.264 AVC/MVC, 4Kp60 AV1, 1080p60 MPEG-2/-1, VC-1, VP8 Video encoder – 8Kp30 H.265/H.264 video encoder 6 TOPS NPU System Memory – 4GB, 8GB, or 16GB LPDDR4x‑4224 SDRAM Storage – Optional 8GB, […]

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52Pi CM4 Router Board also features HDMI, 40-pin Raspberry Pi HAT header, and OLED display

We’ve already seen compact Raspberry Pi CM4 based router boards with two Ethernet ports from DFRobots, Seeed Studio, and MCUZone. 52Pi CM4 Router Board expands on the same principle but also offers HDMI output, a 40-pin GPIO header for Raspberry Pi HAT expansion boards, and a small OLED information display. The board also includes two Gigabit Ethernet, plus the WiFi and Bluetooth connectivity from the Raspberry Pi CM4, and the extra features make the board larger (146x50mm) than competitors. But that makes the platform that much more flexibly, and can be used as a gateways for all sorts of projects thanks to the wide range of Raspberry Pi HAT available in the market. 52Pi CM4 Router Board (EP-0146) specifications: Compatible with Raspberry Pi Compute Module 4 series Storage – MicroSD card slot (only used with Raspberry Pi CM4 Lite) Video Output – HDMI 2.0 port up to 4Kp60 Display – […]

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Compact3566 – A Rockchip RK3566 SBC that closely follows Raspberry Pi 3 form factor

We’ve very recently written about Geniatech XPI-3566 SBC powered by Rockchip RK3566 CPU that somewhat follows the Raspberry Pi 3 Model B form factor. Boardcon Compact3566 offers similar features, but it appears to keep exactly the same port assignment as the Raspberry Pi SBC, so it should be compatible with more accessories. The Compact3566 SBC ships with up to 8GB LPDDR4 and 128GB eMMC flash, features Gigabit Ethernet & WiFi 5, four USB 3.0/2.0 ports,  HDMI 2.0 output, MIPI DSI and CSI interfaces, the 40-pin GPIO header, as well as extra built-in features such as an M.2 socket for storage, RTC with battery, and a built-in microphone. Compact3566 specifications: SoC – Rockchip RK3566 quad-core Arm Cortex-A55 @ up to 1.8 GHz with ARM Mali-G52 2EE GPU with support for OpenGL ES 1.1/2.0/3.2. OpenCL 2.0. Vulkan 1.1, 0.8 TOPS NPU System Memory – 2GB, 4GB, or 8GB LPDDR4/LPDDR4X Storage 8GB, 16GB, […]

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Rock 5B RK3588 SBC preview – What works, what doesn’t in Debian 11

I’ve recently received an early sample of Radxa ROCK5 Model B (aka ROCK 5B) SBC part of the “Developer Edition” batch with 16GB RAM, and already showed the hardware and it booting successfully in Debian 11.

I’ve now spent more time with the board, and as part of the “debug party” tested performance and features in Debian 11. As one would expect, some things work fine, providing excellent performance, but others still need improvements.

Rockchip RK3568/RK3588 and Intel x86 SBCs
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What is PVTM? Or why your Rockchip RK3588 CPU may not reach 2.4 GHz

While the Rockchip RK3588 processor is advertised as reaching 2.4 GHz, not all RK3588 chips may achieve this frequency. The keyword is PVTM (Process-Voltage-Temperature Monitor), and we’ll try to explain why it does, and why some of the RK3588 processors may only be clocked at about 2.3 GHz, while others will run fine at 2.4 GHz. This all started with Rock 5B SBC debug party, where we noticed our boards did not reach the same frequency. Willy Tarreau noted the “pvtm” value was different between our boards: Willy’s board: (Cortex-A76 cluster 1 @ 2,304 MHz, cluster 2 @ 2,352 MHz)

CNXSoft board (Cortex-A76 cluster 1 @ 2,304 MHz, cluster 2 @ 2,304 MHz) :

Thomas Kaiser (tkaiser) board: (Cortex-A76 cluster 1 @ 2,400 MHz, cluster 2 @ 2,400 MHz)

For reference, CPU 0 to 3 are Cortex-A55 cores, CPU 4-5 are two Cortex-A76 cores (cluster 1), and […]

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ZigUNO – An Arduino UNO-sized Zigbee board that works with PTVO firmware

ZigUNO Zigbee development board comes with an Ebyte E18-MS1 module equipped with Texas Instruments SimpleLink CC2530 8051 Zigbee microcontroller and follows Arduino UNO form for Arduino Shield compatibility. The board works with PTVO Zigbee firmware that comes with a graphical configuration tool to select the Zigbee chip used (CC2530), configure I/O behavior (input/output, pull-up, etc…), and more. The developers also suggest using DIYRuZ projects as examples to get started. ZigUNO board specifications: Zigbee module – Ebyte E18-MS1-PCB module with TI SimpleLink CC2530 8051 microcontroller with Zigbee 3.0 (and IEEE 802.15.4) connectivity, 256kB Flash and 8kB RAM, PCB antenna Expansion – Arduino UNO headers (3.3V only, not 5V tolerant) Power Supply – 5V up to 1.5A via 5.5/2.1mm DC jack, 2-pin terminal block, or micro USB port Dimensions – 82x54x13 (Arduino UNO form factor) Temperature Range – 0 to 50°C You’ll find the hardware design files including EasyEDA PDF schematics, BoM, […]

Khadas VIM4 SBC