Conexio Stratus Pro nRF9151 is an IoT development kit based on Nordic Semi nRF9151 system-in-package (SiP) with LTE-M/NB-IoT, DECT NR+, and GNSS connectivity designed for battery-powered cellular-connected products such as asset trackers, environmental monitors, smart meters, and industrial automation devices. It’s offered with the “Stratus Pro Expansion Dock” allowing users to add WiFi 6 through an nRF7002 expansion board and various other modules via Grove, Qwiic, MikroBus, and Seeed Studio’s XIAO connectors or sockets. It’s an update to the original Conexio Stratus Pro based on nRF9161 introduced last June with a very similar feature set. Let’s have a deeper look to find out any potential differences between the two versions of the devkit. Conexio Stratus Pro nRF9151 specifications (with changes highlighted in bold or strikethrough): System-in-package – Nordic Semi nRF9151 SiP MCU – Arm Cortex-M33 clocked at 64 MHz with 1 MB Flash pre-programmed MCUBoot bootloader, 256 KB RAM Modem [...]

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The NXP RW612 is an Arm Cortex-M33 SoC with three radios, namely WiFi 6, Bluetooth 5.4, and 802.15.4 for Thread and Matter connectivity. It also has a small sibling called the RW610 without the 802.15.4 radio. I first came across RW61x chips, when Debashis wrote about the Trimension SR250 UWB chip mentioning it can work with “host processors like NXP’s i.MX, RW61x, and MCX families”. I initially thought it was a typo for the iW612 tri-radio solution introduced in 2022, and the RW612 is indeed similar, but it’s a complete wireless microcontroller/SoC with an Arm Cortex-M33 application core so it can be used independently as a host instead of a companion chip. NXP RW612 and RW610 specifications: MCU sub-system Core – 260 MHz Arm Cortex-M33 with TrustZone-M Memory On-chip 1.2 MB SRAM PSRAM interface for memory expansion Storage – Quad FlexSPI Flash XIP with on-the-fly decryption Peripheral interfaces Up to [...]

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The “OpenWrt One/AP-24.XY” is a Filogic 820-based WiFi 6 router board manufactured by Banana Pi whose software is directly managed by OpenWrt developers with assistance from MediaTek. The router was first announced in January 2024, and developer samples became available sometime in April with some early units auctioned away at the OpenWrt Summit which took place in Cyprus on May 18-19. The good news is that the OpenWrt One is now available to anyone on Aliexpress for $89 including a metal enclosure, a PoE module, three antennas, and a power supply. Here’s a reminder of the OpenWrt One router specifications: SoC – MediaTek MT7981B (Filogic 820) dual-core Cortex-A53 processor @ 1.3 GHz System Memory – 1GB DDR4 Storage 128 MB SPI NAND flash for U-boot and Linux 4 MB SPI NOR flash for write-protected (by default) recovery bootloader (reflashing can be enabled with a jumper) Two types of flash devices [...]

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