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September 2, 2019September 2, 2019

Espressif ESP-Skainet Voice Assistant Offers Wake Word Engine and Speech Commands Recognition for Embedded MCUs

Skynet is finally here! OK, not quite, but at least we do have ESP-Skainet now courtesy of Espressif Systems. ESP-Skainet is an intelligent voice assistant that features the company’s WakeNet wake word engine and MultiNet speech commands recognition. WakeNet WakeNet has been specifically designed for low-power MCUs such as ESP8266 or ESP32 with a low memory footprint (20KB RAM) and a high calculation speed that makes it capable of achieving a high success rate for wake word detection even in noisy environments. Tested in the company’s upcoming LyraT-Mini audio board that combines an ESP32-WROVER-B module and a codec, WakeNet achieves a 97% wake word success rate at a one-meter distance, and 95% three meters away in a quiet environment. ESP-Skainet wake-up engine ships with the wake-up word “嗨乐鑫” (Hi Lexin), which translates in “Hello Espressif”, and supports up to five wake words. You can use customize wake words as well, […]

August 17, 2019August 17, 2019

M5Stack M5StickV is a Tiny AI Camera for Maker Projects

I’ve just started to play with Maixduino board based on ESP32 WiSoC and Sipeed M1 module that enables AI tasks such as object detection thanks to built-in AI accelerators found in Kendryte K210 RISC-V processor and noticed references to M5Stack M5StickV in firmware file names. Somehow I never wrote about M5Stack, but the company provides modular ESP32 IoT development boards that can be stacked with various modules to easily and quickly build prototypes. M5StickV is one of those modules and is similar to Maixduino kit with camera and display, minus WiFi + Bluetooth connectivity, except that everything nicely packed into a cute module. M5StickV hardware specifications: SoC – Kendryte K210 dual-core 64-bit RISC-V processor @ 400MHz with dual independent double-precision FPU, 8MB on-chip SRAM, Neural Network Processor (KPU) @ 0.8Tops, Field-Programmable IO Array (FPIOA), and more Storage – 16MB flash, microSD card slot Display -1.14″ SPI display with 240×135 resolution […]

Arduino based Clover Platform Targets STEM Education in Vietnam

We’re already seen there’s an active maker community in South East Asia with products such as KidBright32 educational board in Thailand, and Singapore & Thailand based MakerAsia’s recent launch of the open-source KB-IDE for ESP32 targets. Vietnam based Clover Team also introduced a STEM platform for students late last year with hardware, an IDE, and a mobile application. The team has made three educational kits: Clover EDU Basic with Clover Master Board and basic modules Clover Car Robot with Clover Master Board, motor, motor driver module, line sensor, distance sensor, Bluetooth module Clover Inventor that includes all items from Clover EDU Basic and Clover Car Robot plus a WiFi module. The Master board is compatible with the Arduino UNO platform (software-wise) and comes with the following key features: Connectivity – Header for ESP8266 WiFi module Expansion – 4x RJ11 ports for input and output with color signs, and compatible with […]

April 5, 2019April 6, 2019

PGCPSU is a Tiny LiPo PSU Module (Crowdfunding)

Last year we wrote about a two dollars USB 18650 battery shield that allows you to easily power your board over USB using a 18650 LiPo battery. But if you need some more flexibility, and extra features such as reverse polarity protection, PGCPSU, which stands for “Pretty Good Cheap Power Supply Unit”, may be worth looking into. PGCPSU key features & specifications: Power Input – micro USB input or pin header for charging (4.7V to 6V max.) Power Output 5V rail providing at least 350mA, and up to 650mA 3.3V rail providing at least 400mA, and up to 800mA Safety Integrated battery protection including reverse polarity protection Over-discharge, short circuit/over-current protection Power Efficiency High efficiency even at low load, important for long battery life Low quiescent current (49uA for the 5V rail + 57uA for the 3.3V rail) Enable/disable pin for the 3.3V rail with selectable default state solder jumper […]

April 4, 2019

SainSmart DS213 Review – A Portable Mini Digital Storage Oscilloscope

Hey Karl here with another oscilloscope review. We are going to look at the DSO213 (aka DS213 mini DSO). It is a new handheld oscilloscope in the DSO line. I recently reviewed an oscilloscope that was a tethered USB oscilloscope and will use it as a comparison. The DSO213 is a compact, battery powered, oscilloscope that increases some specs over previous version the DSO203. DS213 Oscilloscope Unboxing and Teardown Pictures . I thought this was an interesting design choice. Pogo type pins connect this board. This series of scopes has been reviewed quite a bit and they have been well received and for a hobbyist they seem to be adequate. Model DSO213 DSO203 MCU STM32F103VE STM32F103VE ADC HWD9288 AD9288 Channels 2 analog, 2 digital 2 analog, 2 digital Analog Bandwidth 15MHz 8MHz Max Sample Rate 100MSa/s 72MSa/s Maximum Memory Depth 4K 4K Horizontal Sensitivity 100nS/Div~1S/Div(1-2-5sequence step) 0.1uS/Div~1S/Div(1-2-5sequence step) Vertical Sensitivity […]

March 13, 2019April 13, 2021

FOSSASIA 2019 Schedule – March 14-17

As its name implies, FOSSASIA is a Free and Open Source Software event taking place every year in Asia, more specifically in Singapore. I first discovered it last year, and published a virtual FOSSASIA 2018 schedule last year to give an idea about the subjects discussed at the event. It turns out FOSSASIA 2019 is coming really soon, as in tomorrow, so I’m a bit late, but I’ll still had a look at the schedule and made my own for the 4-day event. Thursday – March 14, 2019 10:05 – 10:25 – For Your Eyes Only: Betrusted & the Case for Trusted I/O by Bunnie Huang, CTO Chibitronics Security vulnerabilities are almost a fact of life. This is why system vendors are increasingly relying on physically separate chips to handle sensitive data. Unfortunately, private keys are not the same as your private matters. Exploits on your local device still have […]

January 28, 2019January 28, 2019

nRF52840 MDK Base Dock Adds AA Battery Holder, Grove Connectors

Makerdiary nRF52840 Micro Development Kit (MDK) is a breadboard-friendly devkit for Nordic Semi nRF52840 multi-protocol wireless SoC that supports Bluetooth 5.0, Thread, IEEE 802.15.4, ANT, and 2.4GHz proprietary, and various popular frameworks or OS such as Arm Mbed OS, or the Zephyr Project. nRF52840 MDK Base Dock makes development just a little easier, by adding an AA battery holder, and four Grove connectors compatible with Seeed Studio’s Grove modules. nRF52840 MDK Base Dock specifications: Dual 2×18 Socket Headers compatible with nRF52832-MDK & nRF52840-MDK 4 Grove connectors with selectable UART/I2C/I2S/PDM/QDEC/SPI/ADC NFC tag-A PCB Antenna Power Power button with latching circuit AA battery holder Synchronous, Step-up Converter with VIN>VOUT Down Mode Operation 0.8V-to-4V Input Range 3.3V Output with Over-Current Protection Battery level sensing with 1:2 voltage divider on AIN2 Low power consumption: 5uA Shutdown Current; 145uA Idle Current Dimensions – 58mm x 54mm x 17mm The board also adds an NFC PCB […]

January 25, 2019

Google & Arduino Unveils the Arduino Science Kit Physics Lab

Google and Arduino have partnered together to developer and launch the Arduino Science Kit Physics Lab, the first official Arduino kit designed for middle school curriculum (ages 11 to 14). Based on Arduino WiFi MKR1010, the science kit will allow pupils to experiment with forces, motion, and conductivity, and log data with Google’s Science Journal “digital science notebook” app for Android. Arduino Science Kit Physics Lab kit content: Arduino MKR WiFi 1010 based on Microchip SAMD21 Cortex-M0+ MCU and Espressif Systems ESP32 WiSoC (WiFi + Bluetooth) Arduino Science Carrier Board 2x Silicone standoffs 1x Flat micro USB cable 1x Grove-compatible light sensor module 1x Grove-compatible temperature sensor module 1x Grove-compatible white LED module 3x Grove Cable 20cm – universal 4-pin connector 2x Double-ended cable: crocodile clip/banana plug (50 cm), 2x Double-ended cable crocodile clip/banana plug (20 cm) 1x Magnet 1x Hook-and-loop Velcro strap, 1x Hook-and-loop Velcro dot 2x PCB sticks, 1x […]