Posted on

STMicro VL53L1X Time of Flight (ToF) Sensor Extends Distance Measurement Range up to 4 Meters

STMicroElectronics VL53L0X ToF (Time-of-flight) range sensor is a tiny chip that can accurately and quickly measure distance up to 2 meters using laser light.  I had the chance to test the sensor via TinyLIDAR board connected Arduino and Raspberry Pi, and found it was a great little sensor. TinyLIDAR includes an STM32 MCU, but you can also find standalone board for as low as about $4 shipped on Aliexpress. However, if 2 meters is too short a range for your project, the good news is that STMicro has now launched VL53L1X ToF “FlightSense” sensor with a range of up to 4 meters. VL53L1X is pin-to-pin compatible with VL53L0X, so existing PCBs could be re-used with the new sensor. STMicro VL53L1X main specifications: Emitter: 940 nm invisible laser (Class1) SPAD (single photon avalanche diode) receiving array with integrated lens Low-power microcontroller running advanced digital firmware Distance Ranging up to 4 meters […]

Posted on

STMicro STM32WB Dual Core Cortex M4/M0+ MCU Comes with Bluetooth 5 & 802.15.4 Radios

STMicro has announced yet another family part of their STM32 portfolio with STM32WB micro-controller family featuring an Arm Cortex M4 application core, a Cortex M0+ core to offload the main core of networking tasks, as well as Bluetooth 5 and 802.15.4 radios. The MCU’s 802.15.5 radio can run other wireless protocols concurrently, including OpenThread, ZigBee, or proprietary protocols used to connect devices to the Internet of Things (IoT). STM32WB MCUs share the following key specifications: Application Core – Arm Cortex-M4 CPU @ up to 64 MHz with FPU, adaptive real-time accelerator (ART Accelerator), MPU, 80 DMIPS and DSP instructions Memory  – Up to 256 KB RAM, including 64 KB with hardware parity check, 20×32-bit Backup Register Storage Up to 1 MB Flash with sector protection (PCROP) against R/W operations for Bluetooth Low Energy and 802.15.4 SW stack Quad SPI memory interface with XIP Radio 2.4 GHz RF transceiver supporting Bluetooth […]

Khadas Edge2 Arm mini PC
Posted on

STMicro Introduces Ultra-efficient STM32L4+ Series MCUs with Better Performance, Chrom-GRC Graphics Controller

STMicroelectronics has announced an upgrade to their STM32L4 series Cortex-M4 micro-controllers with STM32L4+ series upping the maximum frequency from 80 MHz to 120 MHz delivering up to 150 DMIPS (233 ULPMark-CP) , and ultra low power consumption as long as 33 nA in shutdown mode without RTC. The new family also adds Chrom-GRC graphics controller (GFXMMU) that can handle both circular and square TFT LCD displays together with a MIPI DSI interface and displayer controller, making it ideal for wearables, Chrom-ART 2D accelerator for better graphics performance, two Octo SPI interfaces, and more memory (640KB max) and storage (up to 2MB flash). If you want to know all differences between STM32L4 and STM32L4+, and/or learn how to use peripherals, STMicro has setup a nice free STM32L4+ online training page, which allow you to do just that either by downloading PDF documents, or following e-Presentations with slides and audio. STM32L4+ appears […]

Posted on

WizziKit is a DASH7, LoRa and Sigfox Wireless Sensor & Actuator Network Kit

Over the last few years, I’ve written several article about LoRaWAN, Cellular IoT, and Sigfox based long range low power IoT solutions. DASH7 is another LPWAN (Low Power Wide Area Network) standard that operates on the same 868 and 915 MHz ISM bands as LoRa and Sigfox, but has much lower power consumption, and the cost of a shorter range up to 500 meters, instead of the 5+km associated with LoRa or SigFox. The DASH7 Alliance Protocol (D7A) is an Open Standard, and if you want more details you can download version 1.1 of the specifications on DASH7 Alliance website. I’m writing about DASH7 today thanks to an article on ST blog about Wizzilab’s Wizzikit, an evaluation kit and framework for DASH7 with a gateway, and several nodes that can also optionally support LoRaWAN and Sigfox protocols. The kit is comprised of the following items: WizziGate GW2120 Ethernet/Wifi/Dash7 gateway – based […]

Posted on

RadioShuttle Network Protocol is an Efficient, Fast & Secure Alternative to LoRaWAN Protocol

LoRaWAN protocol is one of the most popular LPWAN standards used for the Internet of Things today, but some people found it “lacked efficiency, did not support direct node-to-node communication, and was too costly and far too complicated for many applications”, so they developed their own LoRa wireless protocol software called RadioShuttle, which they claim is “capable of efficiently sending messages in a fast and secure way between simple LoRa modules”. Some of the key features of the protocol include: Support for secure or insecure (less time/energy) message transmission, multiple messages transmission in parallel Unique 32-bit device ID (device number) per LoRa member, unique 16-bit app ID (program number for the communication) Security – Login with SHA-256 encrypt password; AES-128 message encryption Air Traffic Control – Nodes only send if no LoRa signal is active on that channel. Optimized protocol –  Message delivery within 110 ms (SF7, 125 kHz, free […]

Posted on

Grid-EYE Breakout Board is a $49 Low Resolution Thermal Camera Module

Thermal cameras can be really expensive pieces of equipment, and even the cheap 60×60 thermal cameras available on Aliexpress costs a little over $200. However, PURE Engineering has made an breakout board with Panasonic Grid-EYE infrared 8×8 array sensor that allows you to experiment with the technology, or integrate into your own projects for just $49. Grid-EYE breakout board features: Panasonic Grid-EYE AMG8834 64 pixel infrared / thermal camera sensor with 60 degree viewing angle using MEMS thermopile technology Pinout compatible with Arduino Zero,  ST-NUCLEO board, and other 3.3V boards with I2C, VDD, GND, INT, and AD pins PUREModules PCB edge connectors with UART, GPIO, to interface with the company’s IoT board Power Supply – On-board regulator handles 3 to 5V input The Panasonic sensor transfers thermal presence, direction, and temperature values over I2C. The company wrote a demo for the module with an Arduino sketech and a Processing sketch […]

Advertisement

Posted on

Samsung JerryScript is a Lightweight Open Source JavaScript Engine for the Internet of Things

In the old days, micro-controller programming was all done in assembly or C, but in recent years higher level languages, included interpreted ones such as Python and JavaScript, have made their ways into MCUs with projects such as MicroPython or Espruino (JS) often running on STMicro STM32 ARM Cortex M micro-controllers, but also other platforms such as ESP8266. As I browsed through the Embedded Linux Conference Europe 2016 schedule, I discovered that Samsung worked on it own implementation of a JavaScript engine for the Internet of Things: JerryScript. It is a full implementation of ECMAScript 5.1 standard written in C that can run on micro-controllers with less than 64KB RAM, and less than 200KB storage (160KB footprint with ARM Thumb-2 compilation). JerryScript is comprised of two main components: Parser and Virtual Machine (VM), with the parser performing translation of input ECMAScript application into byte-code than is then executed by the Virtual […]

Posted on

STMicro STM32 ARM Cortex M3 Boards List and Wiki

STMicro STM32 has popular Cortex-M micro-controller found in the $2 “Blue Pill” board, STMicro’s own Nucleo Board, as well as many other variants. Olavi Kamppari (OliviliK), working on hard real-time control with EmBitz IDE, has created a detailed Wiki for STMicro STM32 on Github with lots of information, including an interesting comparison table of various STM32 Cortex M3 boards (and one GD32 board). I’ve reproduced the table in his wiki below, made is sortable & filterable, and added links to Aliexpress store found in other parts of the wiki. You can find much more details about each board in the Wiki. Thanks to Zoobab for the tip.

Khadas VIM4 SBC