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May 23, 2025May 23, 2025 by Debashis Das - 1 Comment

Infineon PSoC 4100T Plus multi-sense Arm Cortex-M0+ MCU supports ML-based liquid level sensing, wake-on-touch with 8µA deep sleep mode

Infineon PSoC 4100T Plus is a new low-power Arm Cortex-M0+ MCU designed for battery-powered or low-power embedded systems that require advanced capacitive touch and proximity sensing. The microcontroller comes with 128 KB of flash, 32 KB of SRAM, and an 8 KB ROM. One of the most interesting features of this MCU is Infineon’s fifth-generation CapSense MSCLP technology, which enables high-resolution, low-power capacitive sensing even in deep sleep mode (as low as 8 µA). Its capacitive sensing uses both self and mutual capacitance methods, supported by analog front-end filtering, sigma-delta modulation, and digital filtering techniques, delivering a signal-to-noise ratio greater than 5:1 for accurate detection. The MCU supports gesture detection, human-machine interfaces (HMI), and smart sensing applications, making it ideal for wearables, consumer devices, and IoT systems. Additional features include a 12-bit 1-MSps SAR ADC, six TCPWM blocks, smart I/O with programmable logic functions, multiple UART/I2C/SPI interfaces, and up to […]

May 22, 2025 by Jean-Luc Aufranc (CNXSoft) - No Comments

Silicon Labs SiXG301 and SiXG302 “Series 3” wireless SoCs are built for line-powered and battery-powered IoT applications

Silicon Labs SiMG301 Series 3 wireless SoC

Silicon Labs has just introduced the first 22nm Series 3 SoCs with the SiXG301 and SiXG302 Arm Cortex-M33 multiprotocol wireless SoCs designed for line-powered and battery-powered IoT devices, respectively. The SiXG301 is offered with 4MB flash and 512 KB SRAM, embeds an LED pre-driver for advanced LED smart lighting and smart home products, and supports 2.4 GHz wireless protocols such as Bluetooth, Zigbee, and Thread with support for Matter. The upcoming SiXG302 Bluetooth and Matter SoC offers an ultra-low-power consumption using only 15 µA/MHz active current, or 30% lower than competitive devices in its class, and as such is ideal for battery-powered wireless sensors and actuators. We’ll be focusing on the SiMG301 multi-protocol SoC and SiBG301 Bluetooth LE SoC in this article since the details are sparse for the SiXG302 parts (SiMG302 and SiBG302). Silicon Labs SiMG301 / SiBG301 specifications: MCU Core – 32-bit Arm Cortex-M33 with DSP instructions and […]

May 19, 2025 by Debashis Das - 4 Comments

Waveshare RA4M1-Zero mini development board features secure boot, firmware encryption, and castellated design

RA4M1 Zero Mini Development Board versions

Waveshare RA4M1-Zero is a mini development board built around the Renesas RA4M1 32-bit Arm Cortex-M4 MCU running at 48MHz. The MCU also features 256KB of flash memory, 32KB of SRAM, 8KB of EEPROM, and a built-in Floating Point Unit (FPU). Hardware peripherals include a 14-bit ADC, a 12-bit DAC, a CAN bus controller, an onboard USB 2.0 interface, and WS2812 RGB LED. The MCU also supports firmware encryption, secure boot, and tamper-proof security features to ensure application safety. Its small size (23.5 x 18mm) and castellated module design make it suitable for space-constrained applications, including IoT devices, industrial control systems, secure embedded systems, and compact sensor nodes. RA4M1-Zero mini development board specifications: MCU – Renesas RA4M1 (R7FA4M1AB3CFM) as found in the Arduino UNO R4 CPU 32-bit Arm Cortex-M4F @ 48MHz Memory – 32KB SRAM Storage – 256KB Flash, 8KB EEPROM USB – USB 2.0 device interface via USB Type-C connector […]

May 14, 2025May 14, 2025 by Jean-Luc Aufranc (CNXSoft) - 33 Comments

$39 ODROID-C5 is a power-efficient Amlogic S905X5M SBC with 4GB RAM, no heatsink needed

Hardkernel ODROID-C5 is a lower-cost upgrade to the ODROID-C4 SBC with a faster and more efficient Amlogic S905X5M quad-core Cortex-A55 SoC clocked at 2.5 GHz, 4GB DDR4 RAM, and almost the same features as the previous generation Amlogic S905X3 single board computer. That means a microSD card slot and an eMMC flash module socket for storage, HDMI 2.0 video output up to 4Kp60, a Gigabit Ethernet RJ45 port, four USB ports, and the usual 40-pin Raspberry Pi GPIO header. ODROID-C5 specifications: SoC – Amlogic S905X5M CPU – Quad-core Cortex-A55 processor @ 2.5 GHz GPU – Arm G310-V2 GPU @ 850 MHz supporting OpenGL ES 3.2, Vulkan 1.0 and OpenCL 2.0 VPU Video Decoding – 4Kp75 10-bit: AV1, H.265, VP9, AVS2; 4Kp30: H.264 Video Encoding – 1080p30 H.264 System Memory – 4GB DDR4 @ 3200MT/s Storage eMMC module connector with HS400 speed (16, 32, 64GB, 128GB, and 256GB modules available) MicroSD […]

May 14, 2025May 14, 2025 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

SiFli SF32LB52J big.LITTLE Arm Cortex-M33 Bluetooth MCU powers the Core Time 2 smartwatch

SiFli SF23LB52J is a Bluetooth 5.3 microcontroller part of the SF32LB52x family with two Cortex-M33 in big.LITTLE configuration with a 240 MHz high-performance core for user application/GUI and a 24 MHz low-power core to manage the Bluetooth part. A few months ago, Eric Migicovsky, the founder of the smartwatch company Pebble, and now Core Devices, introduced the Core 2 Duo and Core Time 2 smartwatches running PebbleOS open-source firmware that were mostly relaunches of the never-released Pebble 2 and Pebble Time 2 with some tweaks. We already knew the Core 2 Duo would be based on a Nordic nRF52840 Arm Cortex-M4F microcontroller, however, the one for the Core Time 2 was kept secret. That’s until today, as Eric has just announced that the Core Time 2 would be based on the SiFli SF23LB52J MCU, since the smartwatch required an MCU with more RAM and processing power, and SiFli also offers […]

May 11, 2025May 11, 2025 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

ThinkNode M2 ESP32-S3-based Meshtastic handset features 1.3-inch OLED display, 1,000 mAh battery

Elecrow ThinkNode M2 is yet another Meshtastic handset for off-grid messaging and GPS coordinate sharing based on an ESP32-S3 module providing Bluetooth connectivity to a smartphone, and a Semtech SX1262 LoRa transceiver for low-power long-range wireless connectivity. It’s an evolution of the ThinkNode-M1, itself similar to the LILYGO T-Echo, based on a Nordic Semi nRF52840 Bluetooth module and SX1262 LoRa transceiver with an external antenna housed in a 3D printed enclosure. The new ThinkNode M2 is very similar but features a more powerful ESP32-S3 module instead, relies on a 1.3-inch OLED display instead of a 1.54-inch e-paper display, and is housed in an ABS plastic case. ThinkNode M2 specifications: Core module – ESP32-S3 module (looks to be ESP32-S3-WROOM-1 on the photo below) SoC – ESP32-S3 CPU – dual-core 32-bit microcontroller @ 240MHz Memory – 512KB SRAM, 8MB PSRAM Storage – 384KB ROM 4MB flash Wireless – 2.4GHz Wi-Fi and Bluetooth […]

May 8, 2025May 8, 2025 by Jean-Luc Aufranc (CNXSoft) - No Comments

Bluetooth 6.1 specification introduces randomized RPA updates for enhanced privacy and power efficiency

The Bluetooth Special Interest Group (SIG) has just adopted the Bluetooth 6.1 Core Specification with the addition of the randomized Resolvable Private Address (RPA) Updates feature and several errata. The Randomized RPA updates feature is designed to enhance privacy and power efficiency in Bluetooth devices by randomizing the timing of address changes to make it much more difficult for third parties to track or correlate device activity over time, and offloading the address change operation to the Controller to help the Bluetooth device extend its battery life. That’s about all there is for Bluetooth 6.1, except some errata like “Pause Encryption should be mandatory to support with encryption”. You’ll find the latest specification on the Bluetooth website, as well as a page specific to Randomized RPA Updates. None of the usual silicon vendors like Silicon Labs, Nordic Semi, or NXP have announced any updates to Bluetooth 6.1. One of the […]

April 29, 2025April 30, 2025 by Debashis Das - No Comments

Inventia MT-718 PS battery-powered IP68 industrial telemetry logger integrates environmental sensors, cellular IoT connectivity

Inventia MT 718 PS battery operated telemetry logger with IP68 protection

Inventia MT-718 PS is a compact, battery-powered industrial telemetry logger designed for monitoring, logging, and data transmission in industrial and environmental applications, especially in areas where grid power supply and access to infrastructure are limited. It supports 2G/4G LTE Cat 1 or NB-IoT/LTE Cat M1 (eMTC) connectivity, and comes with an IP68-rated waterproof housing, allowing operation under 2 meters of water for up to 24 hours. Key features include five binary/counter inputs, two analog inputs (0–5V with 4–20mA conversion option), and built-in pressure (0–10 bar), temperature, and humidity sensors, as well as RS-485 with Modbus RTU support. The logger also features two digital outputs, can store up to 60,000 records at 1-second intervals, offers an optional OLED display, and supports OTA firmware updates. It is powered by replaceable alkaline or lithium batteries for long-term, maintenance-free operation and includes tamper detection via a lid sensor. The MT-718 OS can be used […]