Seeed Studio W600 Certified WiFi Module to Support Arduino, Micropython

W600 Certified WiFi Module

Last year, Seeed Studio introduced Air602 WiFi module, a competitor to ESP8266 based on Winner Micro W600 Arm Cortex-M3 microcontroller and selling for $1.90. The module was clearly optimized for cost and size since it offered only a few I/Os, and there was absolutely no mention about FCC or CE certifications. The company has now launched another W600 module, slightly larger to expose more I/Os, and pre-certified to comply with FCC and CE requirements. W600 certified WiFi module is offered standalone, or fitted to “Grove – W600” module for easy connection to Arduino boards. W600 Module Specifications: WiSoC – Winner Micro W600 Arm Cortex-M3 microcontroller with 1MB Flash, RF Transceiver, CMOS PA, BaseBand WiFi Connectivity – 802.11 b/g/n up to 150 Mbps Frequency – 2.4~2.4835 GHz Features – Wi-Fi WMM, WMM-PS, WPA/WPA2, WPS Protocols – TCP, UDP, ICMP, DHCP, DNS, HTTP Access Point and Station modes PCB antenna Expansion – 25x castellated holes with 2x UART, 2x SPI, up to …

ReButton WiFi Button Features MXCHIP EMW3166 Module

ReButton Azure IoT

We’ve previously covered WiFi buttons based on ESP8266 processor,  but Seeed Studio has just launched ReButton “developer device” that serves the same purpose but features STM32 based MXCHIP EMW3166 WiFi module instead, exposes one I2C grove connector, and is preloaded with sample firmware that triggers Azure IoT Central or Azure IoT Hub. ReButton hardware specifications: MCU module – MXCHIP EMW3166 module including STM32F412 Arm Cortex M4F MCU @ 100 MHz with 256KB SRAM, 1MB+2MB SPI Flash, and Cypress BCM43362 WiFi chip Input – 1x Push button Output – 1x RGB LED Extension – 1x I2C Grove connector (3.3V I/O) Debugging – 1x SWD pads, 1x UART for debugging Misc – 1x Jumper switch Power supply 2x AAA Alkaline batteries (LR03) Internal supply voltage – 3.3V Dimensions – 70 x 70 x 25mm The ReButton comes preloaded with an Arduino sketch that handle key presses and send a trigger to Azure IoT Central or Azure IoT Hub. Documentation on Github describes …

$30 Arch Mix Development Board Features NXP i.MX RT1052 Crossover Processor

Arch Mix

NXP i.MX RT Arm Cortex-M7 crossover processors are supposed to fill the gap between microcontrollers and more powerful application processors thanks to real-time capabilities, and a higher CPU frequency. We’ve already covered several i.MX RT1050 series platforms including NXP’s own evaluation board and Forlinx OK1052-C development kit comprised of a carrier board and an i.MX RT1052 system-on-module. But if you’d like to experiment with NXP i.MX RT processor using a cheaper, smaller, and easier to purchase development platform, Seeed Studio has started to sell Arch Mix development board for $29.90 plus shipping. Arch Mix board specifications: SoC – NXP i.MX RT1052 Arm Cortex-M7 processor @ up to 528MHz System Memory – 32MB SDRAM Storage – 64MB Hyperflash, 8MN QSPI flash, microSD card socket Display I/F – RGB LCD interface USB – 1x micro USB 2.0 host port, 1x USB OTG port for data and power Expansion Headers – 2x 22-pin headers (2.54mm pitch) with RMII, CAN, I2C, UART, CSI, I2S, …

Seeeduino Lotus Cortex-M0+ is a $10 Arduino compatible Board with 12 Grove Connectors

Seeeduino Lotus

Grove modules are cool little add-on boards that connect through 4-pin header using UART, I2C, analog or digital I/Os, and usually you’d need to buy a HAT or shield to connect them to respectively Raspberry Pi or Arduino board. But Seeed Studio has come up with a small Arduino compatible board based on Microchip  SAMD21 microcontroller called Seeeduino Lotus Cortex-M0+ that may be the cheapest “Grove” solution around as it sells for just $9.90. Seeeduino Lotus Cortex-M0+ specifications: MCU – Microchip Atmel SAMD21 Arm Cortex-M0+ microcontroller at 48MHz with 256KB Flash and 32KB SRAM as found in Arduino Zero. USB – 1x micro USB port for power and programming Expansion 12x on-board Grove connectors (6x Digital, 3x Analog, 1x UART and 2x I2C) Arduino UNO headers 14x Digital I/O Pins (10 PWM outputs) 6x Analog Inputs I/O pins are 3.3V, do not input more than 3.3V, otherwise the CPU may be damaged Debugging / Programming – 6-pin ICSP header Misc …

nRF52840 MDK Base Dock Adds AA Battery Holder, Grove Connectors

nRF52840 MDK Base Dock

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 antenna and a power button. There’s no specific documentation for …

Black Friday 2018 – International Deals

Black Friday 2018 GearBest

November 11.11 is now behind us, but that means Black Friday and Cyber Monday are soon approaching and as usual I’ve gathered some deals or events geared towards an International audience, mostly through various China based online shopping websites. GearBest Black Friday activity has already started with the run-up stage on November 14-21 with deposit expansion and lucky draw, followed by the main event taking place on November 21-26 with $100-$200 coupons and 24-hour flash sale, and finally Cyber Monday event from November 26-31 with activity details to be determined. There’s also a Black Friday coupon that works sitewide: BlackFriday-GB. The coupon provides 10% discount on order of $10 or more on items located in the Chinese (CN-099) warehouse, and not yet discounted. The coupon is valid until November 26, 0:00 UTC+8 Beijing Time (unless more than 20,000 units are sold with the coupon) GeekBuying’s promise of up to 80% discount in their Black Friday event should probably be taken …

$16 ESP32-A1S ESP32 Audio Development Kit Comes with 2 Microphones, Audio Jacks & Headers

Espressif ESP32 WiSoC can be integrated into various applications, and earlier this year Espressif Systems released ESP32 LyraTD MSC Audio Mic HDK (Hardware Development Kit) which I could test with Baidu DuerOS using Mandarin. Since then the company released the ESP-ADF Audio Development Framework that beside Baidu DuerOS, now supports Google Assistant and Amazon Alexa, so you don’t need to speak or learn Chinese to use the kit! 🙂 Another ESP32 audio board was the similarly named ESP32-LyraT, and now we have at least more more option with Seeed Studio selling ESP32-A1S WiFi + Bluetooth ESP32 audio development kit for $16.90 on their store. ESP32-A1S ESP32 audio development kit specifications: Wireless Module A.I. Thinker ESP32-A1S module based on ESP32 dual core Tensilica CPU clocked at up to 240MHz with 520 KB SRAM, and 8MB on-module PSRAM 802.11 b/g/n WiFi and Bluetooth 4.2 LE Storage – Micro SD card slot up to 64GB Audio 3.5mm headphone jack for stereo audio output …

Seeed Studio Introduces 1 to 8 Channels Grove I2C Solid State Relay Modules

I’ve been playing with products or boards with AC relays for a while, but I never really cared to check about different types of relay. So far, all platforms I tested came with largish blue or black boxes which are SPDT electro-mechanical relays. But as I browsed through Seeed Studio, I found some weirdly-shaped relay modules, much thinner than usual, and fairly more expensive. The main difference is that those are solid state relays, and the boards also include a grove connector that allows microcontrollers or other boards to control the relay over a simple I2C connection. The modules are available in 1-channel, 2-channel, 4-channel, and 8-channel  versions with the following specifications: MCU – STMicro STM32F030F4P6 Arm Cortex-M0 micro-controller Relay –  Omron G3MC202P module Input Voltage – 4~6V (Rated Input Voltage: 5V) Load Voltage Range – 75 to 264 VAC 50/60 Hz Rated Load Voltage –  100 to 240 VAC 50/60 Hz Load Current – 0.1 to 2 A Leakage Current …