ESP32-S2-Saola-1 Development Board is Now Available for $8

ESP32-S2-Saola-1 Board

Espressif ESP32-S2 WiFi SoC mass production started at the end of February 2020,  and soon enough we started to find ESP32-S2 SoC and modules for $1 to $2 on sites like Digikey, but so far we had not seen ESP32-S2 development boards for sale. The good news is the breadboard-friendly ESP32-S2-Saola-1 development board has started to show up for $8 on resellers such as Mouser and Digikey albeit with a lead time of 8 to 12 weeks. ESP32-S2-Saola-1 specifications: Supported modules – ESP32-S2-WROOM(-I) & ESP32-S2-WROVER(-I) with 4 MB SPI flash and for ESP32-S2-WROVER modules only, 2 MB PSRAM USB – 1x Micro USB port for power and programming / debugging via USB-to-UART bridge Expansion – 2x 20-pin I/O headers with SPI, I2S, UART, I2C, touch sensors, PWM, etc… Misc – Boot and reset buttons, RGB LED, 3.3V power on LED Power Supply (3 methods) 5V via Micro USB port (default) 5V and GND header pins 3V3 and GND header pins …

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Seeed IoT Button for AWS Brings Back Amazon Dash Button to Life for Developers

Seeed IoT Button for AWS

Amazon introduced $5 dash buttons in 2015 to let consumers purchase regular items such as washing powder by simply pressing a button. Some people hacked them for other purposes, for instance as WiFi logging buttons, but the company eventually stopped selling the buttons in February 2019 and fully killed those at the end of August. Seeed Studio is bringing back Amazon Dash button to life in some ways, with the Seeed IoT Button For AWS Wi-Fi-based, programmable button that deploys the AWS IoT 1-Click service. Seeed IoT Button for AWS hardware specifications: MCU – Dual-core MCU with 20MHz Cortex M0 and 200MHz Cortex M4F (Very likely Realtek RTL8720DN Wireless MCU) Storage – 4MB flash Connectivity – Dual-band Wi-Fi 4 802.11 a/b/g/n (2.4GHz & 5GHz) and Bluetooth 5.0 LE USB – 1x USB Type-C port for charging Misc – Button good for 100,000 cycles, 3x LEDs (red, green, blue) Power Supply 5V via USB-C port Battery – 3.6V Li-ion 18650 Rechargeable …

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ESP32-S2 WiFi SoC Sells for $1, ESP32-S2-WROOM & ESP32-S2-WROVER Modules for $2 and Up

ESP32-S2-WROOM & ESP32-S2-WROVER

Espressif Systems ESP32-S2 was announced in May 2019, before the release of the datasheet and first internal development boards a few months later.  Mass production was delayed due to COVID-19, but earlier this month we reported ESP32-S2 mass production had started and the company has a new ESP32-S2-Kaluga-1 multimedia development board in the works. So it was just a question of time before the processor, modules, and boards become available. Unexpected Maker recently got a development kit with ESP32-S2 final silicon, so I thought maybe I could find ESP32-S2 hardware on Aliexpress. I had no luck finding modules or boards at this time, but one seller is currently selling ESP32-S2 for just $1 per piece, but the trick is that you’d have to purchase 2,000. It’s also about the same price on Digikey. As a reminder, ESP32-S2 SoC is based on a single Xtensa LX7 core clocked at 240 MHz, supports Wi-Fi HT40 @ 2.4 GHz, and provides up to …

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MikroElektronika Launches Fusion for ARM & EasyPic MCU Development Boards

fusion for arm

During Embedded World 2020 (EW2020), some companies withdraw their presence, while some were at the event. MikroElektronika presented several new boards and among them Fusion for ARM v8 and EasyPic v8 development boards. While we already wrote about Fusion fo TIVA, we haven’t covered any EasyPic board yet. Development boards from MikroElektronika allow rapid prototyping in the most efficient and effortless way. Fusion for ARM v8 Fusion for ARM v8 belongs to the Fusion family of development boards. It has integrated the world’s first embedded debugger/programmer over WiFi, while the CODEGRIP WiFi license is available as an add-on feature. The board is designed to be used in almost every environment retaining full debugging and programming access. The CODEGRIP currently supports more than 1600 microcontrollers from different vendors. The Fusion board integrates a new MCU card standard. It is a low profile standard where sockets consist of two connectors (male/female) which prevents the wrong insertion. The MCU card has standardized dimensions …

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Wio Terminal Features Microchip SAMD51 MCU, Dual-Band WiFI & Bluetooth WiFI, and 2.4″ LCD

Wio Terminal

Microchip SAM D5x Arm Cortex-M4 microcontrollers were introduced in 2017, and the next year we started to see Arduino or MicroPython compatible board brought to market including Adafruit Metro M4 or Tachyon boards. Seeed Studio has now introduced its own Arduino & MicroPython compatible SAMD51 platform with Wio Terminal also integrating an RTL8720DN dual-band WiFi 4 and Bluetooth 5.0 chip, and 2.4″ LCD display. There are also Grove connectors to add sensor modules, and a 40-pin header to use the device like a Raspberry Pi HAT. Wio Terminal features and specifications: MCU – Microchip SAMD51 (ATSAMD51P19) Arm Cortex-M4F microcontroller @ 120 MHz (can be overclocked to 200 MHz) with 192KB RAM, 512KB flash Storage – 4MB external SPI flash, MicroSD card slot up to 16GB Display – 2.4″ LCD screen with 320×240 resolution (ILI9341 driver) Audio – Microphone and buzzer Connectivity – Dual-band WiFi 4 802.11b/g/n and Bluetooth 5.0 via Realtek RTL8720DN COrtex-M4/M0 WiSoC USB – 1x USB-C OTG port …

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$5 Sinilink WiFI USB Power Switch Works with Tasmota Firmware, Supports up to 20V/5A

Sinilink WIFI USB Power Switch

Late last year, ITEAD launched Sonoff Micro WiFi USB switch that allows you to turn on and off USB powered devices over WiFi using eWelink app for Android or iOS. It integrates with Amazon Alexas and Google Home, and does the job, but people who like to use the open-source Tasmota firmware will be disappointed to learn it’s not based on ESP8266 processor hence not compatible. Luckily, there’s another option: Sinilink WiFi USB switch (aka XY-WFUSB) based on ESP8266 WiFi SoC, and supporting up to 20V/5A according to the manufacturer. It is currently sold for under $5 including shipping on Aliexpress. Sinilink XY-WFUSB specifications: WiSoC – Espressif ESP8266 processor with 802.11b/g/n WiFi 4 USB Input – USB type-A female port supporting 3.5V to 20V up to 5A (100 Watts max) USB Output – USB type-A male port up to 100W Misc On/off button – Pressing 5 seconds also change the pairing mode between AP mode and “touch mode” LEDs – …

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Semtech LoRa Edge Uses LR1110 Single Chip with LoRa, WiFi, and GNSS

LoRa Edge

Semtech, a leader in LoRa and RF technology, is continuing its support for the LoRa ecosystem with the launch of a new portfolio of solutions called LoRa Edge to simplify and accelerate IoT applications for the Edge. LoRa Edge is a new highly versatile and low power software-defined LoRa-based platform that will enable a wide portfolio of applications for indoor and outdoor asset management, targeting industrial, building, home, agriculture, transportation, and logistics markets. The LoRa Edge platform is launching with a geolocation solution targeted to IoT applications for asset management. It features an ultra-low power LoRa transceiver, GNSS sniffing capabilities, Wi-Fi scanning technologies all in one single package called Semtech LR1110. “Semtech continually delivers Internet of Things (IoT) solutions that simplify and accelerate the development of LPWAN applications,” said Pedro Pachuca, Director of IoT Wireless in Semtech’s Wireless and Sensing Products Group. “LoRa Edge and LoRa Cloud geolocation services enable customers to develop ultra-low-power applications for a variety of industries and …

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MikroTik wAP LoRa8/LoRa9 LoRa Gateway Kits Launched for $169

MikroTik wAP LoRa8 Kit

Last year, MikroTik announced they had worked on several LoRa products including R11e-LoRa8EU mini PCIe LoRaWAN Gateway/concentrator card, wAP LoRa8 kit (LoRa & WiFi gateway) with the mini PCIe card, as well as a 6.5 dBi Omni antenna kit to extend the range provided by the 2 dBi internal antenna. All three products are now available with R11e-LoRa8EU mini PCIe selling for $89, wAP LoRa8 kit going for $169, and the optional antenna kit adding $49. The company also introduced wAP LoRa9 kit with R11e-LoRa9 mini PCIe card geared towards markets (like the USA) using the 902-928 MHz frequency band and selling for the same price. MikroTik wAP LoRa8 kit (RBwAPR-2nD&R11e-LoRa8) specifications: SoC – Qualcomm Atheros QCA9531 MIPSBE (Big Endian) processor @ 650 MHz System Memory – 64 MB RAN Storage – 16 MB flash Connectivity Wired – 10/100M Fast Ethernet WLAN – 2.4 GHz 802.11b/g/n WiFi 4 @ up to 300 Mbps LPWAN R11e-LoRa8 LoRa MiniPCIe card working in …

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