Fingerprint Identification with STM32 MCU and Serial TFT LCD Module

STM32 Fingerprint TFT LCD

CNXSoft: This is a guest post by Amy working for STONE Technology, a company specializing in industrial liquid crystal display modules This month, I planned to develop a fingerprint door lock project. When I selected the fingerprint identification module, the project was suspended. However, I thought that since the fingerprint identification module had been purchased, I would simply test it. This fingerprint module can be easily purchased online, connected over UART to an MCU  board. It supports fingerprint scanning, fingerprint entry, fingerprint comparison, and fingerprint deletion. Since the fingerprint module manufacturer provides a demo program for STM32F103 series microcontrollers, I bought a small development board based on STM32F103C8T6. The demo program of the fingerprint module uses LED lights to prompt the user to enter the fingerprint and compare the status (success or failure). But I want to use an LCD display, so I chose a 480×272 resolution serial LCD display. The specific model of this display is STONE STVC050WT-01, which …

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ctxLink Open Hardware WiFi Debug Probe is based Black Magic Probe (Crowdfunding)

ctxlink

Last month, we wrote about Blip nRF52840 dev board that also included an STM32F103 MCU running the open source Black Magic Probe (BMP) firmware for debugging and programming. Based on the original Black Magic Probe hardware product page, BMP is a JTAG and SWD adapter used for programming and debugging ARM Cortex MCUs, and does not require intermediate programs such as OpenOCD or STLink server. Instead, you can run GNU Debugger (GDB) and select the virtual COM port offered by the debug board. The reason I’m bringing BMP again today, is because a new open source hardware wireless debugging probe for Cortex-M based on Black Magic Probe has been launched in the last few days. ctxLink key features and specifications: Microcontroller – STMicro STM32F401RE Arm Cortex -M4F MCU at up to 84 MHz Connectivity – 802.11b/g/n WiFi via Microchip WINC1500 module USB – 1x micro USB port for connection to host computer and/or power Debugging Features Implements SWD and JTAG …

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Blip Nordic nRF52840 Dev Board Includes STM32 Black Magic Probe Programmer & Debugger (Crowdfunding)

The Latest Electronut Labs Nordic nRF52840 Based Dev Board Electronut Labs has started its Crowd Supply campaign for Blip, a Nordic nRF52840 based development board. With many onboard sensors and systems, the boards are aimed at prototyping and projects in a wide variety of BLE and 802.15.4, wireless application scenarios.  It has a programmer and debugger built-in. Past Articles  Electronut Labs has a series of Nordic Semiconductor SoC projects previously reported on including  Papyr, a Bluetooth E-Paper Display and Bluey, a BLE Development board using the Nordic nRF52832, and CNXSoft also published an article comparing several of the Nordic SoC available in development boards for Bluetooth 5 (BLE5). The Features the Stand Out Blip has a Black magic Probe compatible programmer and debugger built-in, along with a temperature/humidity sensor, ambient light intensity sensor,  and a three-axis accelerometer.  The board is designed to prototype very low power devices and an ability to add a microSD card slot, to make it a …

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STMicro Launches the first 8-pin STM32 Microcontrollers

8-pin STM32 / STM32G0

At the end of last year, STMicro introduced what they claim is the first 90nm mainstream microcontroller with STM32G0 Arm Cortex-M0+ MCU clocked at 64 MHz. At the time, the family included parts with 24, 32, 48 and 64 pins packages, but there were also plans for 8-pin and 100-pin STM32G0 microcontrollers. The company has now just announced availability for the first 8-pin STM32 microcontrollers thanks to four new STM32G0 SKUs with up to 8KB RAM and 32KB flash in an SO8N package. The 90nm process node and simpler design make the new microcontrollers most suitable for cost & energy-conscious applications governed by battery-capacity limits, eco-design legislation, or market expectations such as appliance energy ratings. 8-pin STM32 Microcontrollers Available Now STM32G030J6 is part of STM32G0 Value Line with 32KB flash and 8KB memory, as well as 6 I/O pins supporting GPIO, SPI, I2C, and UART outputs. STM32G031J6, STM32G031J4, and STM32G041J6 Access Line MCUs are also available in SO8N (6 x …

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Linux 5.3 Release – Main Changes, Arm, MIPS & RISC-V Architectures

Linux 5.3 Changelog

Linus Torvalds has just announced the release of Linux 5.3: So we’ve had a fairly quiet last week, but I think it was good that we ended up having that extra week and the final rc8. Even if the reason for that extra week was my travel schedule rather than any pending issues, we ended up having a few good fixes come in, including some for some bad btrfs behavior. Yeah, there’s some unnecessary noise in there too (like the speling fixes), but we also had several last-minute reverts for things that caused issues. One _particularly_ last-minute revert is the top-most commit (ignoring the version change itself) done just before the release, and while it’s very annoying, it’s perhaps also instructive. What’s instructive about it is that I reverted a commit that wasn’t actually buggy. In fact, it was doing exactly what it set out to do, and did it very well. In fact it did it _so_ well that …

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Signet High-Capacity Thumbdrive Supports 2FA, Password & Secure Data Storage (Crowdfunding)

Signet HC Crowdfunding Started The latest version of the Signet thumbdrive is the Signet HC. The HC has a number of enhanced features and a lower price point, making it an attractive alternative to other high-security flash drives.  The drive is high capacity storage, with secure storage technology, 2 Factor Authentication (2FA) token and encryption.  It also has a password manager and enhanced database features.  The company has started its crowdfunding campaign and there are several device quantity options and peripherals.  Features of the Signet HC The Nth Dimension has announced the Signet HC recently, bringing to the forefront of its latest device, the all-in-one aspects of the drive’s capabilities. The  Signet HC is certainly positioned to be one of the top featured, encrypted password protected, and 2FA storage devices of its size. The data on the drive is encrypted, and password protected and can be accessed through cross-platform client application available on Windows, macOS, GNU/Linux, and Android.  There …

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Qt for MCUs – Qt Announces support for Microcontrollers

QT_TitleImage1

[Update August 24, 2019: Added information about expected release date and license] About Qt for MCUs Qt- The well known opensource toolkit for creating graphical interface announced their new release: Qt for MCUs, targeting MCU’s. The new graphical toolkit will be capable of running on devices without operating system. This may be a game changer in the entire MCU world, since Qt for MCUs allows developers to create fluid user interfaces on cost-effective micro controllers. This means we will be able to see smartphone like GUI’s which are running on low-end  MCU’s with limited resources. With reference to their press release, assuring that Qt-GUI will consume less power to save the battery life. Qt for MCUs Software Stack While developing any applications for MCU,  developers still can use their powerful declarative UI language QML and rich set of ready-made Qt Quick controls.  And the C++ APIs, helps the user interface with C++  based back-end. applications are being rendered by Qt’s …

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mDash Cloud platform for IoT Devices Targets ESP8266/ESP32, STM32, and TI CC3220 Wireless MCUs

mDash firmware

Cesanta (a company based in Dublin, Ireland) recently launched mDash – an IoT cloud platform for administration of various IoT modules. This platform supports Espressif’s modules ESP32 & ESP8266, STM32 (L4,M4) and TI CC3220, and offers a bunch of features which are known to be  challenging tasks in the IoT world. This includes OTA (Over-The-Air) firmware updates, remote configuration and administration, alerts and notifications, remote device control and file management. This can be achieved through 3 programming platforms – Arduino IDE, ESP-IDF and through Mongoose OS. For evaluation and testing purpose mDash offers a simulator that run as a docker container. Refer our previous post, to understand how to get started with Cesanta’s Moongoose OS for ESP8266. Basic WorkFlow mDash Library The company offers reference firmware/library for the defined hardware platforms. This been implements by using secure MQTT for communication, re-connection and initial provisioning with mDash cloud. You can find the library for ESP32 & ESP8266 with a few examples …

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