# mcu Published articles for mcu. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## Alif Semi Balletto B1 and Ensemble E1C StartKits feature Cortex-M55 + Ethos-U55 MCU for IoT and Edge AI DevFeed: [Alif Semi Balletto B1 and Ensemble E1C StartKits feature Cortex-M55 + Ethos-U55 MCU for IoT and Edge AI]() Original publisher: [Read original article]() Author: Debashis Das Published: 2026-09-15T09:00:06Z Content type: news Language: en Sources: [CNX Software - Embedded Systems News]() Topics: [Microcontrollers](), [Embedded Systems](), [Microcontroller](), [cpu](), [Internet of things](), [Artificial Intelligence](), [SDK]() Tags: [802-15-4](), [ai](), [alif](), [ble](), [camera](), [core](), [debugger](), [development-board](), [devkit](), [edge](), [edge-ai](), [embedded-systems](), [hardware](), [i2c](), [iot](), [led](), [low-power](), [mcu](), [microcontrollers](), [mikrobus](), [open-source](), [sensor](), [specifications](), [testing](), [zephyr](), [zephyr-os]() ### AI overview Alif Semiconductor's Balletto B1 and Ensemble E1C StartKits are low-cost development boards built around Cortex-M55 microcontrollers with Ethos-U55 NPUs. The Balletto B1 adds BLE 5.3 and 802.15.4 connectivity, while both boards include camera, audio, sensor expansion, debugging, and power-measurement features. ### Source excerpt Alif Semiconductor's Ensemble E1C (SK-E1C) and Balletto B1 (SK-B1) StartKits are low-cost development boards built around the company's Cortex-M55 + Ethos-U55 microcontrollers. The Balletto B1 adds BLE 5.3 and 802.15.4 wireless connectivity, while the Ensemble E1C does not have built-in wireless connectivity. Both StartKits feature a microcontroller with a 160MHz Cortex-M55 CPU, an Ethos-U55 NPU, 2MB SRAM, and 1.8/1.9MB NVM. They also include an Arducam camera header, a mikroBUS Click Board expansion socket, and two PDM microphones for camera, audio, and sensor-based projects. The Balletto B1 additionally provides the complete RF path to a chip antenna for its wireless subsystem, while both boards feature an on-board Segger J-Link debugger for development and testing. Alif Semiconductor StartKit (SK-B1 and SK-E1C) specifications: MCU SK-E1C - Alif Semiconductor Ensemble E1C SK-B1 - Alif Semiconductor Balletto B1 CPU - Arm Cortex-M55 core with Helium-M Vector Extension @ up to 160 MHz NPU - Arm [...] The post Alif Semi Balletto B1 and Ensemble E1C StartKits feature Cortex-M55 + Ethos-U55 MCU for IoT and Edge AI appeared first on CNX Software - Embedded Systems News. ## NeoEyes NE302 - A tiny USB-C-powered WiFi 6 Edge AI Vision camera based on STM32N6 MCU DevFeed: [NeoEyes NE302 - A tiny USB-C-powered WiFi 6 Edge AI Vision camera based on STM32N6 MCU]() Original publisher: [Read original article]() Author: Jean-Luc Aufranc (CNXSoft) Published: 2026-09-12T02:19:36Z Content type: news Language: en Sources: [CNX Software - Embedded Systems News]() Topics: [Embedded Systems](), [Microcontroller](), [wifi 6](), [Hardware](), [object-detection]() Tags: [c-c-plus-plus](), [camera](), [computer-vision](), [edge-ai](), [embedded-systems](), [hardware](), [mcu](), [object-detection](), [open-source](), [stm32](), [stmicro-stm32](), [vision](), [wifi-6]() ### AI overview The article reports on CamThink's NeoEyes NE302, a compact USB-C-powered Wi-Fi 6 edge AI vision camera built around the STM32N6 MCU. It describes the device's reduced memory and feature set compared with the NE301, along with its camera, wireless, debugging, video-encoding, object-detection, networking, OTA, and security capabilities. ### Source excerpt CamThink NeoEyes NE302 is a tiny WiFi 6 Edge AI camera based on an STM32N6 Arm Cortex-M55 MCU with Neural-ART NPU which the company says is "especially suitable for developers and makers". I initially thought about it as a smaller version of the CamThink NeoEyes NE301 based on the same STM32N6 MCU and 4MP OS04C10 camera sensor. But it's quite a different device. First, it doesn't have a battery, and the USB-C is only used for power. Memory and storage capacities have been reduced to 32 MB PSRAM and 64 MP SPI flash, and a range of built-in and optional features have been removed, including 4G LTE module (global or US), audio wafers, PIR motion connector, and a 16-pin GPIO header, as well as support for PoE power. CamThink NeoEyes NE302 specifications: Vision MCU STMicro STM32N6 MCU Core - Arm 32-bit Cortex-M55 CPU @ up to 800MHz with Arm Helium [...] The post NeoEyes NE302 - A tiny USB-C-powered WiFi 6 Edge AI Vision camera based on STM32N6 MCU appeared first on CNX Software - Embedded Systems News. ## Building smarter AMRs with the Arduino® VENTUNO™ Q board DevFeed: [Building smarter AMRs with the Arduino® VENTUNO™ Q board]() Original publisher: [Read original article]() Author: Arduino Team Published: 2026-09-11T11:10:16Z Content type: article Language: en Sources: [Arduino Blog]() Topics: [Arduino](), [Physical AI](), [Microcontroller](), [Linux](), [Computer vision](), [real-time](), [systems]() Tags: [amr](), [arduino](), [autonomous-mobile-robots](), [computer-vision](), [featured](), [linux](), [mcu](), [physical-ai](), [real-time](), [robotics](), [robots](), [ros](), [sensor](), [sensors](), [ventuno-q]() ### AI overview The article explains how Arduino's VENTUNO Q board could support autonomous mobile robots by combining a Linux-capable MPU with a real-time MCU. The MPU can run Linux, ROS 2, navigation, computer vision, and AI workloads, while the MCU handles motor control, encoder feedback, inertial measurements, local sensing, and motor-driver communication. ### Source excerpt Physical AI is based on the idea that intelligence shouldn't stop at perception: instead, it should bring to life systems able to sense their environment, reason about it, and act on it - all in one continuous loop. It's what makes the difference between a device that observes and one that acts. Autonomous mobile robots [...] The post Building smarter AMRs with the Arduino® VENTUNO™ Q board appeared first on Arduino Blog. ## XIAO SAMD21 Plus and RP2040 Plus USB-C boards get additional GPIO pins, integrated Li-ion battery management DevFeed: [XIAO SAMD21 Plus and RP2040 Plus USB-C boards get additional GPIO pins, integrated Li-ion battery management]() Original publisher: [Read original article]() Author: Jean-Luc Aufranc (CNXSoft) Published: 2026-09-07T01:07:22Z Content type: news Language: en Sources: [CNX Software - Embedded Systems News]() Topics: [Embedded Systems](), [Microcontroller](), [USB](), [Raspberry Pi]() Tags: [arm](), [atmel-samd](), [battery](), [boot](), [circuitpython](), [development-board](), [embedded-systems](), [gpio](), [hardware](), [i2c](), [led](), [mcu](), [micropython](), [raspberry-pi](), [rust](), [seeed-studio](), [software](), [usb](), [zephyr](), [zephyr-os]() ### AI overview Seeed Studio has expanded its XIAO Plus Series with the XIAO SAMD21 Plus and XIAO RP2040 Plus USB-C boards. The boards retain the existing form factor while adding GPIO pins and integrated Li-ion battery management, and support several embedded development platforms. ### Source excerpt Seeed Studio has expanded its XIAO Plus Series introduced in 2025, with the XIAO SAMD21 Plus and XIAO RP2040 Plus USB-C boards adding several GPIOs and integrated Li-ion battery management to the XIAO (SAMD21) and XIAO RP2040, launched in 2020 and 2021, respectively, while keeping the same form factor. XIAO SAMD21 Plus Specifications: MCU - Microchip SAMD21G18 Arm Cortex-M0+ microcontroller at up to 48MHz with 256KB Flash,32KB SRAM USB - 1x USB Type-C port for power and programming Expansion I/Os 2x 7-pin "legacy" headers with 11x analog inputs, 11x digital I/Os, 1x DAC, SPI, UART, and I2C Castellated holes and pads with 16x digital I/Os, I2C,and I2S 3.3V I/O voltage (not 5V tolerant) Misc Reset and Boot buttons RGB LED Charge LED Power Supply 5V via USB-C port Pads for battery On-board PMIC Dimensions - 23.5x17.5 mm Temperature Range - -40°C ~ 85°C The upgraded variant of the XIAO SAMD21 [...] The post XIAO SAMD21 Plus and RP2040 Plus USB-C boards get additional GPIO pins, integrated Li-ion battery management appeared first on CNX Software - Embedded Systems News. ## ArduinoCore-Zephyr 1.0.0 adds support for Arduino VENTUNO Q, updates to Zephyr 4.4.1, and more DevFeed: [ArduinoCore-Zephyr 1.0.0 adds support for Arduino VENTUNO Q, updates to Zephyr 4.4.1, and more]() Original publisher: [Read original article]() Author: Jean-Luc Aufranc (CNXSoft) Published: 2026-09-04T10:27:38Z Content type: release Language: en Sources: [CNX Software - Embedded Systems News]() Topics: [Arduino](), [Zephyr RTOS](), [Embedded Systems](), [Embedded Software Dev](), [Hardware](), [Microcontroller](), [webcam](), [ci]() Tags: [arduino](), [bug-fixes](), [camera](), [ci](), [development-board](), [embedded-systems](), [hardware](), [mcu](), [real-time](), [release](), [software-management](), [ventuno-q](), [vision](), [zephyr](), [zephyr-os]() ### AI overview Arduino has released ArduinoCore-Zephyr 1.0.0 with support for the VENTUNO Q SBC and Nicla Vision camera, an update to Zephyr 4.4.1, and bug-fix and CI improvements. The article also lists supported Arduino platforms and installation steps. ### Source excerpt Arduino has just announced the release of ArduinoCore-Zephyr version 1.0.0, with new hardware support, including the VENTUNO Q SBC, an updated Zephyr 4.4.1 base, support for the Nicla Vision camera, and various fixes and improvements. Arduino first announced its plans to switch from Arm Mbed to Zephyr RTOS in July 2024, before releasing the first beta of Arduino Core for Zephyr in December of the same year. ArduinoCore-Zephyr 1.0.0 is not the first stable version, since that was version 0.90.0 released on July 29, 2026. The new release builds on that, so let's see what's new. ArduinoCore-Zephyr 1.0.0 highlights Support for Arduino VENTUNO Q SBC, specifically the STM32H5F5 real-time MCU on the board Update to Zephyr 4.4.1 with the latest upstream improvements, security fixes, and driver support Added Nicla Vision camera support to capture and process image data directly through the Zephyr core Various bug fixes and CI improvements Currently [...] The post ArduinoCore-Zephyr 1.0.0 adds support for Arduino VENTUNO Q, updates to Zephyr 4.4.1, and more appeared first on CNX Software - Embedded Systems News. ## TinyGo 0.42 adds support for 87 Puya PY32 MCU variants and two EmbedFire boards DevFeed: [TinyGo 0.42 adds support for 87 Puya PY32 MCU variants and two EmbedFire boards]() Original publisher: [Read original article]() Author: Jean-Luc Aufranc (CNXSoft) Published: 2026-09-04T04:33:53Z Content type: news Language: en Sources: [CNX Software - Embedded Systems News]() Topics: [Go Language](), [Embedded Systems](), [Microcontroller](), [Compiler](), [Arm](), [Internet of things](), [LLVM]() Tags: [arm](), [article](), [code](), [compiler](), [development](), [development-board](), [devices](), [embedded-systems](), [firmware](), [go](), [gpio](), [guest-post](), [hardware](), [iot](), [llvm](), [mcu](), [microcontrollers](), [news](), [programming](), [puya](), [software-management](), [tooling]() ### AI overview TinyGo 0.42 adds support for the Puya PY32 family of 32-bit Arm microcontrollers, covering 87 MCU configurations and two EmbedFire development boards. The port includes startup code, linker scripts, GPIO, UART, and generated device-register definitions. ### Source excerpt CNXSoft: This is a guest post by Pavel Burgr, who recently added Puya PY32 MCU support to TinyGo 0.42, the latest version of the Go compiler for microcontrollers. We first covered TinyGo in 2019, and the project is still going strong with 17.7k stars, 1.1k forks, and 243 contributors. I just made a few edits and added illustrations and a few links to the article. TinyGo 0.42 adds support for the Puya PY32 family of 32-bit Arm microcontrollers. The new port includes startup code, generated device-register definitions, linker scripts, GPIO and UART support, and targets for 87 individual MCU configurations. It also includes board definitions for two inexpensive EmbedFire development boards available from AliExpress. The port was contributed by Pavel Burgr and merged through TinyGo pull request #5106. One motivation was to establish a solid, easy-to-use firmware platform for small IoT devices built around the Registry service and the BleRiot [...] The post TinyGo 0.42 adds support for 87 Puya PY32 MCU variants and two EmbedFire boards appeared first on CNX Software - Embedded Systems News. ## Artery AT32F406 and AT32F408 Cortex-M4F MCUs feature optional high-speed USB OTG PHY DevFeed: [Artery AT32F406 and AT32F408 Cortex-M4F MCUs feature optional high-speed USB OTG PHY]() Original publisher: [Read original article]() Author: Debashis Das Published: 2026-09-03T09:40:39Z Content type: news Language: en Sources: [CNX Software - Embedded Systems News]() Topics: [Microcontroller](), [Embedded Systems](), [Arm](), [USB](), [Internet of things](), [cpu](), [Hardware]() Tags: [arm](), [boot](), [bootloader](), [c-c-plus-plus](), [cortex-m4](), [cpu](), [development-board](), [embedded](), [embedded-systems](), [hardware](), [industrial](), [iot](), [mcu](), [microcontrollers](), [processors](), [specifications](), [usb]() ### AI overview The article describes Artery Technology's AT32F406 and AT32F408 Arm Cortex-M4F microcontrollers, which run at up to 216 MHz. The AT32F408 adds USB 2.0 OTG High-Speed support with an integrated PHY, while both devices provide DSP and floating-point capabilities, configurable memory options, QSPI, and a range of digital and analog peripherals. ### Source excerpt Artery Technology AT32F406 and AT32F408 are two new Arm Cortex-M4F MCUs running at up to 216 MHz, with the F408 adding USB OTG High-Speed and an integrated PHY for industrial automation, IoT, USB accessories, and gaming peripherals. The AT32F406/F408 series both offer DSP instructions and a floating-point unit (FPU), integrate up to 512 KB Flash and 192 KB SRAM, and a 4 KB OTP memory for critical data and parameters. The microcontrollers also offer a QSPI interface for external Flash or RAM expansion, and a range of digital and analog peripheral interfaces. Artery AT32F406/AT32F408 specifications: MCU - 32-bit Arm Cortex-M4F CPU up to 216 MHz; also features Memory Protection Unit (MPU) and DSP instructions Memory/Storage 128 KB to 192 KB SRAM 256 KB to 512 KB Flash memory 26 KB boot memory (configurable as a bootloader or general instruction/data memory) 4 KB OTP (one-time programmable) memory QSPI interface for external SPI [...] The post Artery AT32F406 and AT32F408 Cortex-M4F MCUs feature optional high-speed USB OTG PHY appeared first on CNX Software - Embedded Systems News. ## D-Robotics RDK S100P - A 128 TOPS alternative to NVIDIA Jetson Orin NX 16GB with Cortex-A78AE/R52+ cores DevFeed: [D-Robotics RDK S100P - A 128 TOPS alternative to NVIDIA Jetson Orin NX 16GB with Cortex-A78AE/R52+ cores]() Original publisher: [Read original article]() Author: Debashis Das Published: 2026-08-31T08:06:13Z Content type: news Language: en Sources: [CNX Software - Embedded Systems News]() Topics: [Jetson](), [Robotics](), [Embedded Systems](), [Microcontroller](), [Jetson Orin](), [SOC](), [cpu](), [Arm](), [real-time](), [GPU](), [Linux](), [Nvidia]() Tags: [arm](), [artificial-intelligence-ai](), [camera](), [computer-vision](), [cortex-a78](), [cpu](), [deep-learning](), [development-kit](), [dfrobot](), [edge-ai](), [embedded](), [embedded-systems](), [gpu](), [hardware](), [jetson](), [jetson-orin](), [linux](), [mcu](), [networking](), [nvidia](), [os](), [processors](), [real-time](), [robotics](), [ros](), [safety](), [sensor](), [sensors](), [single-board-computer](), [soc](), [software](), [som](), [specifications](), [systems](), [ubuntu]() ### AI overview The D-Robotics RDK S100P is a robotics single-board computer featuring a 6-core Cortex-A78AE CPU, 4-core Cortex-R52+ MCU domain, 128 TOPS INT8 Nash BPU, Mali-G78AE GPU, and 24 GB of LPDDR5. Its MCU supports real-time motor and sensor control, potentially reducing the need for a separate real-time controller depending on the robot's requirements. ### Source excerpt D-Robotics RDK S100P development kit is a robotics SBC built around an S100P-based module providing an alternative to NVIDIA Jetson Orin NX 16GB with a 6-core Cortex-A78AE application cluster, a 4-core Cortex-R52+ MCU domain, a Nash BPU rated at 128 TOPS INT8, a Mali-G78AE GPU, and 24 GB of LPDDR5. The four R52+ cores can be configured for reliable real-time control: two cores run in lockstep for safety, and the other two support split-lock operation. In practice, the A78AE CPU and BPU can handle Linux and vision processing, while the MCU handles time-critical tasks such as motor and sensor I/O. This can reduce the need for a separate real-time controller, although whether it eliminates one depends on the robot and its requirements. RDK S100P specifications: SoC - D-Robotics S100P CPU - 6x Arm Cortex-A78AE @ 2.0 GHz (safety-capable AE cores) MCU - 4x Arm Cortex-R52+ @ 1.2 GHz (1x DCLS [...] The post D-Robotics RDK S100P - A 128 TOPS alternative to NVIDIA Jetson Orin NX 16GB with Cortex-A78AE/R52+ cores appeared first on CNX Software - Embedded Systems News. ## PinePower V2 USB-C ports may report 0V despite outputting the correct voltage DevFeed: [PinePower V2 USB-C ports may report 0V despite outputting the correct voltage]() Original publisher: [Read original article]() Published: 2026-05-12T00:00:00Z Content type: news Language: en Sources: [Community blog on PINE64]() Topics: [USB](), [Microcontroller]() Tags: [issue](), [mcu](), [pinepower](), [power](), [product](), [usb]() ### AI overview Pine64 disclosed that some current Desktop PinePower V2 units may show 0V on their USB-C ports even though they output the correct voltage. The issue cannot be fixed by users because the MCU must be flashed at the factory; corrected batches are planned, but their production timing is unknown. ### Source excerpt Hey everyone, we'd like to make a public disclosure to the community about a product currently selling on the PineStore website (pine64.com). The current Desktop PinePower V2 batch has an issue where in some situations the USB-C ports will report "0V" when there is obviously something attached. In reality it is actually outputting the correct voltage. This has been fixed for future batches, but the current batch still has stock available. There is no fix available for affected Desktop PinePower V2 batches as the MCU can only be flashed at the factory. We have no ETA when the fixed batch will start production as this depends on the rest of the buggered batch being sold. We'll let you all know when the fixed ones hit the store. And please don't open your PinePower devices as they're high voltage power supplies, which can lead to serious risks. ## Introduction to the PineTime Pro DevFeed: [Introduction to the PineTime Pro]() Original publisher: [Read original article]() Published: 2026-03-28T00:00:00Z Content type: article Language: en Sources: [Community blog on PINE64]() Topics: [Hardware](), [Microcontroller](), [SOC](), [Bluetooth](), [Embedded Software Dev](), [Development]() Tags: [bluetooth](), [embedded](), [firmware](), [fosdem](), [hardware](), [mcu](), [pinetime](), [pinetime-pro](), [psram](), [soc]() ### AI overview Pine64 introduces the PineTime Pro, a more powerful sibling to the original PineTime rather than a replacement. The prototype features a dual-core Cortex-M33 SoC, Bluetooth 5.2, expanded memory, an AMOLED touchscreen, GPS, health sensors, and other upgraded hardware. ### Source excerpt Table of contents Introducing the PineTime Pro Why "Pro" and not "PineTime 2" What makes it "Pro" A long road to get here Recent progress What about software? What happens next? Do you have something to share? Contact Community PineStore Introducing the PineTime Pro The PineTime Pro was officially announced at FOSDEM26 on the Pine64 stand. The demo was a bit modest (more on that later on), but we were delighted to showcase the first prototype of the "next generation PineTime" along with a demo running on a development board! We also mentioned the PineTime Pro in the FOSDEM 2026 Update blog post. In this blog post, we would like to provide a more in-depth look at the PineTime Pro. Why "Pro" and not "PineTime 2" The PineTime project started in October 2019, that's more than 6 years ago! Needless to say, the PineTime has been a great success. The community has been very active in developing firmware for the device, companion apps, tools and more. And, according to PineStore, it sells very well. The reason the PineTime Pro isn't called the PineTime 2 is because it's not meant to replace the original PineTime. The original watch still has a lot going for it: it is simple, hackable, efficient and already supported by great community projects like InfiniTime and WaspOS. It will continue production alongside this new model. The PineTime Pro should be seen as a more powerful, more feature-rich sibling rather than a direct successor. If the original PineTime is a solid open smartwatch platform, the PineTime Pro is our attempt to push that idea much further with new and improved components. What makes it "Pro" Compared to the "OG" PineTime, the PineTime Pro brings a significant hardware upgrade. At its core is a dual-core Cortex-M33 SoC, with one application core running at up to 200 MHz and a dedicated Bluetooth core. It also comes with 800 KB of internal SRAM and 8 MB of PSRAM. Around that MCU, the hardware currently includes: Bluetooth 5.2 - Classic (BR/EDR) & Low Energy A ## Espressif's ESP32-C5 is Now in Mass Production DevFeed: [Espressif's ESP32-C5 is Now in Mass Production]() Original publisher: [Read original article]() Author: John Lee Published: 2025-05-23T00:00:00Z Content type: release Language: en Sources: [Blog on Developer Portal]() Topics: [ESP32-C5](), [Espressif](), [RISC-V](), [SOC](), [ESP-IDF](), [Microcontroller](), [Internet of things]() Tags: [802-15-4](), [blog](), [bluetooth](), [esp-hosted](), [esp-idf](), [esp32-c5](), [espressif](), [iot](), [mcu](), [production](), [risc-v](), [security](), [soc](), [wi-fi-6](), [zigbee]() ### AI overview Espressif announces that its ESP32-C5 RISC-V SoC is now in mass production. The chip supports dual-band Wi-Fi 6, Bluetooth 5 LE, and IEEE 802.15.4 connectivity, and includes a 240 MHz processor, LP-CPU, SRAM, ROM, external PSRAM support, programmable GPIOs, and security features. ESP-IDF support is planned for version 5.5. ### Source excerpt Espressif has launched the ESP32-C5, the first RISC-V SoC with dual-band Wi-Fi 6, Bluetooth 5 (LE), and IEEE 802.15.4 support. Designed for low-latency wireless applications, it features a 240 MHz CPU, LP-CPU, and rich peripheral options. Backed by ESP-IDF, the ESP32-C5 is now in mass production and ready for developers. ## ESP32 family Memory Map 101 DevFeed: [ESP32 family Memory Map 101]() Original publisher: [Read original article]() Author: John Lee Published: 2024-08-20T00:00:00Z Content type: tutorial Language: en Sources: [Blog on Developer Portal]() Topics: [ESP32](), [Espressif](), [Microcontroller](), [Zephyr RTOS](), [Cache](), [Development]() Tags: [architecture](), [blog](), [cache](), [code](), [esp32](), [espressif](), [mcu](), [memory](), [performance](), [zephyr]() ### AI overview This article explains the ESP32 family's memory architecture and presents a visually structured compilation of information from datasheets and technical reference manuals. It covers memory maps, external flash and SPIRAM access, caches, ROM, SRAM, and related details relevant to low-level system and driver development, including Zephyr RTOS porting. ### Source excerpt This article addresses the complexity of Espressif SoCs by offering a visual, structured compilation of crucial technical data from their datasheets and TRMs. The main takeaway for the reader is a simplified, actionable understanding of the memory maps, caches, peripherals, and eFuse blocks, which is essential for low-level system and driver development. ## Playing audio files in a Pi Pico without a DAC DevFeed: [Playing audio files in a Pi Pico without a DAC]() Original publisher: [Read original article]() Published: 2024-03-06T10:52:34Z Content type: tutorial Language: en Sources: [Antirez]() Topics: [Microcontroller](), [MicroPython](), [Hardware](), [Software]() Tags: [audio](), [devices](), [embedded](), [mcu](), [micropython](), [pwm]() ### AI overview A tutorial explores playing audio files on a Raspberry Pi Pico without a DAC. It introduces PWM-generated sound, notes the limitations of square waves, and moves toward generating more complex waveforms for WAV playback. ### Source excerpt The Raspberry Pico is suddenly becoming my preferred chip for embedded development. It is well made, durable hardware, with a ton of features that appear designed with smartness and passion (the state machines driving the GPIOs are a killer feature!). Its main weakness, the lack of connectivity, is now resolved by the W variant. The data sheet is excellent and documents every aspect of the chip. Moreover, it is well supported by MicroPython (which I'm using a lot), and the C SDK environment is decent, even if full of useless complexities like today fashion demands: a cmake build system that in turn generates a Makefile, files to define this and that (used libraries, debug outputs, ...), and in general a huge overkill for the goal of compiling tiny programs for tiny devices. No, it's worse than that: all this complexity to generate programs for a FIXED hardware with a fixed set of features (if not for the W / non-W variant). Enough with the rant about how much today software sucks, but it must be remembered. One of the cool things one wants to do with an MCU like that, is generating some sound. The most obvious way to do this is using the built-in PWM feature of the chip. The GPIOs can be configured to just alterante between zero and one at the desired frequency, like that: from machine import Pin, PWM pwm = PWM(Pin(1)) pwm.freq(400) pwm.duty_u16(1000) Assuming you connected a piezo to GND and pin 1 of your Pico, you will hear a square wave sound at 400hz of frequency. Now, there are little sounds as terrible to hear as square waves. Maybe we can do better. I'll skip all the intermediate steps here, like producing a sin wave, and directly jump to playing a wav file. Once you see how to do that, you can easily generate your own other waves (sin, noise, envelops for such waveforms and so forth). Now you are likely asking yourself: how can I generate the complex wave forms to play a wav file, if the Pico can only switch the pin high or low? A proper non square waveform is ## Build affordable Secure connected devices with ESP32-H2 DevFeed: [Build affordable Secure connected devices with ESP32-H2]() Original publisher: [Read original article]() Author: John Lee Published: 2023-05-11T00:00:00Z Content type: article Language: en Sources: [Blog on Developer Portal]() Topics: [ESP32](), [Security](), [Espressif](), [Hardware](), [cyber resilience act]() Tags: [blog](), [connectivity](), [ecdsa](), [embedded-systems](), [encryption](), [esp32](), [esp32-h2](), [espressif](), [flash-encryption](), [hardware](), [matter](), [mcu](), [rsa](), [secure-boot](), [security]() ### AI overview This article explains the ESP32-H2's hardware and software security features for connected devices, including Secure Boot, flash encryption, debug-interface protection, secure storage, memory protection, and device identity protection. It also describes RSA-PSS and ECDSA verification options, public-key storage and revocation, and the encryption of off-chip flash memory. ### Source excerpt The awareness, as well as the associated concerns, about connected device security, is ever-increasing. With the European Union's Cyber Resilience Act also coming into effect soon, it has become ever so important to have security features built-in to the devices in hardware. The Espressif ESP32-H2 has been built to provide an affordable security solution to all and thus integrates a variety of security features. ## Introducing ESP Privilege Separation DevFeed: [Introducing ESP Privilege Separation]() Original publisher: [Read original article]() Author: John Lee Published: 2022-06-19T00:00:00Z Content type: release Language: en Sources: [Blog on Developer Portal]() Topics: [Embedded Software Dev](), [ESP-IDF](), [Microcontroller](), [ESP32-C3](), [Espressif]() Tags: [blog](), [core](), [embedded-systems](), [esp-idf](), [esp-privilege-separation](), [esp32](), [esp32-c3](), [espressif](), [firmware](), [interface](), [iot](), [mcu](), [memory](), [microcontrollers](), [peripheral](), [security]() ### AI overview Espressif introduces ESP Privilege Separation, a framework that divides ESP-IDF firmware into protected and user applications with isolated execution environments, system calls, and configurable memory and peripheral access. The framework targets ESP32-C3 and is intended to provide privilege separation for microcontroller applications. ### Source excerpt Typically, applications on microcontrollers (MCU) are developed as monolithic firmware. We have been discussing on achieving "user-kernel" separation with appropriate execution privileges, like general purpose OS, on MCUs. The crux of this was to make the end application development easier without worrying about the underlying changes in the system, like how applications on desktop/mobile phones are developed: the underlying operating system handles the critical functionalities, and the end... ## ESP32-S2 Chip Enters Mass Production DevFeed: [ESP32-S2 Chip Enters Mass Production]() Original publisher: [Read original article]() Author: John Lee Published: 2020-03-10T00:00:00Z Content type: release Language: en Sources: [Blog on Developer Portal]() Topics: [Esp32 S2](), [Microcontroller](), [Wi-Fi](), [Internet of things](), [Security](), [USB]() Tags: [blog](), [esp32-s2](), [espressif](), [iot](), [mcu](), [security](), [sensor](), [touchscreen](), [usb](), [wi-fi]() ### AI overview Espressif announces that the ESP32-S2 chip has entered mass production. The Wi-Fi-enabled MCU targets low-cost, low-power connected sensors and supports features including programmable GPIOs, USB-OTG, capacitive touch sensing, LCD interfaces, audio interfaces, and security capabilities. ### Source excerpt Why Is ESP32-S2 Significant?# We launched the ESP32-S2 chip and we are excited to announce that it is in mass production now. Personally, I think it's a big thing; it's something we have been working for, for many years: a Wi-Fi enabled MCU targeting connected low-cost low-power interactive sensors with these features: All these features add up to be a self-contained small form factor connected interactive secure computing and sensor device with a small LCD, such as a thermostat or a smart... ## Amazon FreeRTOS -- ESP32 Support DevFeed: [Amazon FreeRTOS -- ESP32 Support]() Original publisher: [Read original article]() Author: John Lee Published: 2018-06-19T00:00:00Z Content type: tutorial Language: en Sources: [Blog on Developer Portal]() Topics: [ESP32](), [ESP-IDF](), [Microcontroller](), [SDKs](), [MQTT](), [Wi-Fi](), [Cloud]() Tags: [aws](), [blog](), [cloud](), [embedded-systems](), [esp-idf](), [esp32](), [framework](), [freertos](), [iot](), [mcu](), [microcontrollers](), [mqtt](), [release](), [wi-fi]() ### AI overview This article explains how ESP32 integrates with Amazon FreeRTOS using a modified ESP-IDF, covering architecture, qualification, setup, and examples. It states that ESP32 is officially supported, with ESP32-DevKitC and ESP-WROVER-KIT certified in the latest release. ### Source excerpt Preface# Amazon FreeRTOS is the latest offering (after acquisition of FreeRTOS) from Amazon that tries to simplify cloud connectivity with Amazon services (e.g. Shadow, Green-grass etc.) It has support for multiple micro-controller platforms from different vendors. Our ESP32 is now officially supported in Amazon FreeRTOS. ## Espressif April 2018 Newsletter DevFeed: [Espressif April 2018 Newsletter]() Original publisher: [Read original article]() Author: John Lee Published: 2018-05-07T00:00:00Z Content type: article Language: en Sources: [Blog on Developer Portal]() Topics: [Espressif](), [ESP32](), [ESP8266](), [Embedded Systems](), [Internet of things](), [Wi-Fi](), [Microcontroller](), [Arduino]() Tags: [arduino](), [blog](), [embedded-systems](), [esp32](), [esp8266](), [espressif](), [iot](), [mcu](), [newsletter](), [tutorial](), [wi-fi]() ### AI overview Espressif's April 2018 newsletter marks the company's tenth anniversary and highlights new ESP32 audio development boards, ESP32-WROOM-32D availability in Japan, European activity, and a reported 30% share of the MCU Embedded Wi-Fi market in 2017. It also previews ESP8266 and ESP32 projects, including voice-controlled relays, a home automation robot, and a smart-parking app. ### Source excerpt Hi everyone, The month of April is an exciting one for Espressif, since it is our birthday month. This year, in particular, we are celebrating the tenth birthday of our company on 29 April, and we plan our celebrations to extend even in May! Many things have coincided with this occasion, making our tenth anniversary even more special.