Planet Arduino

Arduino has just announced their new Arduino Nano Matter Board, powered by a SiLabs MGM240SD22VNA MPU....

The post Arduino’s Upcoming Cortex M33 Powered Arduino Nano Matter Board is Made in Collaboration with Silicon Labs appeared first on Electronics-Lab.com.

Modular IoT hardware developer, M5Stack, has released a new programmable robot base based on the STM32F030F4 microcontroller with LEGO and Arduino compatibility. The M5Stack BugC2 is “compatible with the M5StickC series controllers,” and includes the ESP32-powered M5StickC Plus2 development kit in the package. It features an L9110S four-way motor driver for all-directional operation, two programmable RGB LEDs, an infrared encoder, and a 16340 rechargeable Li-ion battery holder. It also comes with a USB Type-C port for charging the battery and supports onboard reverse charging protection and voltage detection. Listed applications for the M5Stack BugC2 programmable robot base include remote motor control, robot control, and an intelligent toy. M5Stack BugC2 specifications: Microcontroller – STMicroelectronics STM32F030F4 microcontroller, with Arm 32-bit Cortex-M0 CPU @ 48 MHz, and with up to 256KB of flash memory Motor driver – L9110S Infrared receiver – SL0038GD IR detection distance (StickC Plus2) Infrared emission distance (linear distance) at [...]

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Nuvoton has recently announced their M433 Series MCUs (M433LE8AE and M433SE8AE) along with the NuMaker-M433SE development board. Nuvoton is calling this the “M433 CAN/USB FS OTG” Series, featuring an Arm Cortex-M4F core with DSP and FPU extensions. The MCU is clocked at 144 MHz and consumes 350 nA in deep power-down mode, making it ideal for battery-operated IoT, industrial, and consumer applications. This is not the first Nuvoton MCU we have written about. In recent months, we have seen Nuvoton release the NuMicro M091 Series, the Nuvoton MA35H0 – a cost-optimized MPU, and other dev boards and MCUs. Feel free to check those out if you are interested in the topic. Nuvoton M433 Series MCUs specifications: MCU core 144 MHz Arm Cortex-M4F Includes DSP and FPU instructions Memory Protection Unit (MPU) with 8 regions Memory Up to 128 KB Flash 4 KB LDROM Up to 64 KB SRAM with parity [...]

The post Nuvoton launches M433 Series ultra-low power Arm Cortex-M4F MCUs, NuMaker-M433SE development board appeared first on CNX Software - Embedded Systems News.

The Arduino Nano Matter is the product of a collaboration between Arduino and Silicon Labs. The Nano Matter board was announced in January and is powered by SiLabs’ MGM240S chip. It offers multiple wireless connectivity options such as Matter, OpenThread, and Bluetooth Low Energy. Support for the Matter standard is the Nano Matter board’s key offering. Matter is an open-source, connectivity protocol that lets smart home devices from different manufacturers interoperate seamlessly. The 45mm x 18mm board leverages dual-mode connectivity, with IEEE 802.15.4 (Thread) for mesh networking and Bluetooth Low Energy for short-range communication. It is targeted at the Internet of Things, home automation, professional automation, environmental monitoring, and climate control applications. Prospective industrial applications include machine-to-machine interoperability, machine status monitoring, and worker status optimization. Arduino Nano Matter specs: MPU – SiLabs MGM240SD22VNA MCU core – 32-bit Arm Cortex-M33 with DSP (digital signal processing) instruction and FPU (floating-point unit) @ [...]

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Shenzhen MilkV Technology’s Duo S is a tiny SBC based on the 1 GHz Sophgo SG2000 Arm Cortex-A53 and RISC-V SoC with 512MB DDR3 (SiP), Fast Ethernet, WiFi 6, and Bluetooth 5 connectivity, and a switch to select Arm or RISC-V architecture before powering the board. We already had covered SG2002 Arm/RISC-V boards with 256MB RAM, namely the LicheeRV Nano and Duo 256M, but for people needing more memory, the Duo S provides another option that also features two 2-lane MIPI CSI connectors, a USB 2.0 host port, and two 26-pin headers for expansion. Its form factor reminds me of FriendlyELEC’s NanoPi NEO and family powered by Allwinner processors that were introduced a few years ago. Duo S specifications: SoC – SOPHGO SG2000 Main core – 1 GHz 64-bit RISC-V C906 or Arm Cortex-A53 core (selectable) Minor core – 700 MHz 64-bit RISC-V C906 core Low-power core – 25 to [...]

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Nuvoton recently launched the NuMicro M091 Series of microcontrollers, these are 32-bit MCUs based on the Arm Cortex-M0 core, featuring 4 sets of operational amplifiers with 8 MHz gain bandwidth (GBW), 4 sets of 12-bit DAC, up to 16 channels of 2 MSPS 12-bit SAR ADC, a temperature sensor, and extensive I/O options. The MCU supports the NuMaker evaluation board and various third-party IDEs making this an ideal device for industrial sensing, smart sensors, and precision instrumentation applications. Previously we have seen Nuvoton release MA35H0 and MA35D1 both MPUs are based on Cortex-A35 cores, feel free to check those out if you are interested in the topic. Nuvoton NuMicro M091 MCU specifications: Processor ARM Cortex-M0 core Maximum clock speed: 72 MHz Memory Flash – Up to 64 KB SRAM – 8 KB LDROM – 2 KB (for user program loader) SPROM – 512 Bytes (for security protection) Analog Features 4x [...]

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SOPHGO SG2000 and SG2002 are new SoCs featuring a bunch of RISC-V and Arm cores capable of running Linux, Android, and FreeRTOS simultaneously, and to maximize the fun an 8051 MCU core is also in the mix along with a 0.5 TOPS (SG2000) or 1 TOPS (SG2002) AI accelerator. More specifically we have one 1GHz C906 64-bit core capable of running Linux, one 1GHz Arm Cortex-A53 for Linux or Android, another 700 MHz C906 RISC-V core for FreeRTOS, and a 300 MHz 8051-core for real-time I/Os, as well as 256MB or 512MB SiP DRAM. The chip is designed for AIoT applications such as Smart IP cameras, facial recognition, and smart home devices. SOPHGO SG2000/SG2002 specifications: CPU cores 1x C906 64-bit RISC-V core @ 1GHz 1x C906 64-bit RISC-V core @ 700MHz 1x Arm Cortex-A53 core @ 1GHz MCU – 8051 8-bit microcontroller core @ 25 to 300 MHz with 6KB [...]

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If you want to get rich by hunting with a metal detector, you might want to consider how much you invested in the hardware to start with. Finding a tin can with a $200 detector might not make economic sense. But building a metal detector yourself doesn’t have to be hard, as [Mirko] shows in a recent post. His STM32-based pulse induction metal detector looks good and works well, as you can see in the video below.

[Mirko] reports that the device can detect a coin at 30 cm and a large metal object at more than 80 cm. The project uses the Arduino IDE and a Blue Pill STM32 module. The project looks good with an LED module and a rotary encoder to set sensitivity.

Pulse induction metal detectors use a single coil to send and receive short pulses. This differs from the more common BFO-style which uses two frequencies that produce a beat frequency that changes in the presence of metal. These use two coils and are more affected by mineralization — the interference caused by minerals in the soil — and general interference. Typically, BFO detectors have less sensitivity, especially at a distance.

This isn’t the first pulsed induction detector we’ve seen. Of course, for a simple one you can — to forestall comments — use a 555.

More than once, we’ve looked at a cool board like the TTGO T-Display and thought, “What can we build with this?” If you are [Volos Projects], the answer is a tiny Internet radio. He’s done a lot of other projects with the board including some games and a weather station. You can see the project in the video below.

Of course, the core Internet streaming code would be useful with any ESP32, but the display makes for a good-looking unit. The code is available on GitHub.

With judicious use of network and audio libraries, the player only takes a few hundred lines of code. Pretty impressive considering it even shows a visualization on the tiny display screen.

What we’d really like to see is a nice case, power supply, and speaker option to make a tiny and portable unit. With a 3D printer, it is easy to make very professional-looking projects, as we often see. On the other hand, it does look better than the breadboard version you can see towards the end of the video. It is, though, a neatly done breadboard.

If you want a larger screen, you might enjoy the ESP32 internet radio we looked at before. Probably our favorite case for an Internet radio was this globe.

You really should learn to read Morse code. But if you can’t — or even if you can, and just want a break — you can always get a computer to do it. For example, [jmharvey1] has a decoder that runs on a cheap Bluepill dev board.

The device uses a touchscreen and a few common components. The whole thing cost about $16. You can see it at work along with a description of the project in the video below.

The code uses the Arduino-style setup for the Blue pill — something we’ve talked about before. As for the decoding method, the software employs the Goertzel algorithm which is akin to a single frequency Fourier transform. That is, while a full transform gives you information about the frequency component of a signal across a wide range, the Goertzel algorithm probes the signal for one or a small number of distinct frequencies.

The decoder table looks confusing at first until you realize that each “decode” value consists of a 1 as a start bit followed by a 1 for a dash and a zero for a dot. All bits to the left of the start bit don’t count. So an “E” codes as 02 hex — a start bit followed by a single zero or dot. A “C” is 1A hex (1 + -.-.). Once you find the matching code, you apply the same index to another table to look up the actual letter or string of letters.

If you buy a Bluepill to make one of these, you might as well get two and build something to send code, too.