Tag Archives: Wifi

Espressif ESP32-PICO-KIT WiFi/WLAN+Bluetooth Module

ESP32-PICO-KIT V4 is a mini development board produced by Espressif. At the core of this board is the ESP32-PICO-D4, a System-in-Package (SIP) module with complete Wi-Fi and Bluetooth functionalities. Comparing to other ESP32 chips, the ESP32-PICO-D4 integrates several peripheral components in one single package, that otherwise would need to be installed separately. This includes a 40 MHz crystal oscillator, 4 MB flash, filter capacitors and RF matching links in. This greatly reduces quantity and costs of additional components, subsequent assembly and testing cost, as well as overall product complexity.

Espressif ESP32-PICO-KIT WiFi/WLAN+Bluetooth Module – [Link]

Tiny i.MX7 module runs both Linux and FreeRTOS

F&S announced their tiny PicoCore MX7ULP module, which is able to run Linux or FreeRTOS on an NXP i.MX7 SoC. The board comes with up to 32GB eMMC plus optional WiFi/BT and extended temperature support. The new board measures only 40 x 35mm and will be presented on Embedded World (Feb. 27-Mar. 1) with expected shipment in the third quarter 2018.  The PicoCore module doesn’t have an edge connector, instead interfaces with a 2x 80-pin Hirose DF40C plug connectors.

PicoCore MX7ULP Block Diagram

The PicoCore MX7ULP ships with up to 1GB LPDDR3 RAM, 64MB SPI NOR flash, up to 32GB eMMC, and an optional SD slot. There’s also an option for a wireless module with 802.11b/g/n and Bluetooth 4.1 LE. For display, you get a MIPI-DSI interface that is accompanied with I2C-based resistive and capacitive touch support.

PicoCore MX7ULP, front and back

Additional I/O includes USB OTG, SPI, 2x I2C, 33x general purpose DIO, audio interfaces, and 2x UARTS. The 10-gram board runs on 5V DC power (or a 4.2V battery) and consumes a typical 1W. For more information, please visit F&S Elektronik Systeme’s PicoCore MX7ULP announcement and product page.

PIXO Pixel – An ESP32 Based IoT RGB Display

PIXO Pixel uses an ESP32 to control a matrix of 256(16×16) RGB LEDs. It is an IoT device that can display information via Wifi and BLE.

The PIXO Pixel is an open source RGB display that uses the very cool, APA102-2020 Addressable LED in a 16 x 16 array. These LEDs are very fast, bright, and tiny; only 2mm x 2mm! Controlling the LED matrix is an ESP32 which is a WiFi and BLE connected microcontroller than can be programmed using the Arduino IDE(Or MicroPython!). Together these make up a very cool desktop display that you can program to do pretty much anything you want. There is also an added proto board for if you want to add more components like an accelerometer, thermometer, light sensor, potentiometer, anything!

PIXO Pixel – An ESP32 Based IoT RGB Display – [Link]

RDA5981 is a $1 Fully Integrated WiFi Chip with an ARM Core

RDA’s RDA5981 is a fully integrated low-power WiFi chip from RDA Microelectronics. RDA5981 is a fully built WiFi chip highly intended for applications in the areas of a smart home, audio applications and IoT applications. The RDA5981 is being used in devices running Baidu DuerOS, the Chinese alternative to Amazon Alexa or Google Assistant.

RDA5981 WiFi Module

During the annual event of China’s semiconductor industry IC China 2016, RDA Microelectronics announced the RDA5981 during the event with promises of it reducing the size, power consumption, development costs of a smart device.

The RDA5981A is a low power MCU with IEEE802.11b/g/n MAC/PHY/radio integrated into one chip. The RDA5981 is powered by the ARM Cortex M4 plus FPU/MPU core running at 160MHz speed, a high performing processor for that application type. It has up to 288KByte of internal SRAM and additional 160Kbyte SRAM for Wi-Fi stack and flash cache but with only about 192Kbyte available for the user. It has up to 8MB of Flash, 2x ADC with a 10bit resolution, 8x PWM (Pulse Width Modulation), 4x SPI (Serial Peripheral Interface) with a maximum clock frequency of about 20MHz, one I2C, 2x I2S, 2x UART and a total of about 14 GPIO Pins.

RDA5981 Block Diagram

Concerned about Security, the RDA5981 has an onboard hardware cryptographic accelerator supporting AES/RSA, and a True Random Number Generator (not the one you use software to generate), and lastly a CRC accelerator for improved performance. It includes an onboard TCP stack which could either support SSL, TLS or even both.

Unlike the ESP8266, one the maker’s favorite Wi-Fi module, the RDA5981 includes USB2.0 features.

RDA5981 A/B/C processor specifications:

  • CPU – Arm Cortex-M4 +FPU/MPU core @ up to 160 MHz
  • Memory –
    • Up to 448 KB SRAM for network stack and application
    • User available memory is 192Kbyte
  • Storage –
    • Up to 32Mbit SPI flash
    • Support 64M PSRAM expansion
  • Connectivity
    • WiFi
      • 2.4 GHz 802.11b/g/n WiFi up to 150 Mbps with 20/40 MHz bandwidth
      • WPA, WPA2, WEP, TKIP, CCMP security
      • STA, softAP, P2P, STA+softAp, STA+P2P modes
      • A-MPDU, A-MSDU, HT-BA
    • TCP/IP stack with SSL and/or TLS
  • Host Interfaces – SPI / UART (AT command set) / USB2.0
  • Peripherals – 14x GPIO, 2x UART, 2x I2S, 1x I2C, 8x PWM, 4x SPI, 1x SDMMC, 1x USB2, 2x ADC
  • Security –
    • Hardware crypto accelerator AES/RSA,
    • True random number generator (TRNG)
    • CRC accelerator
  • Misc – Watchdog, 16×16 bits eFuse configuration
  • Package – 5×5mm2 QFN package, 0.4mm pitch QFN-40
  • Temperature –
    • -30oC to +80oC
  • Voltage – 3.0V – 3.5V

The board can be programming with AT commands or using mBed and the company provides support for FreeRTOS and mbedOS5.1 for the chip. More information about the device specification can be found on the Electrodragon Wiki

The RDA5981A IC is expected to sell for around $1 and an RDA5981A Wi-Fi module is available for sale at $1.92 from Electrodragon.

Panasonic PAN9420 is a standalone fully embedded Wi-Fi Module

Building an Internet of Things infrastructure most times depends upon the wireless connectivity, but there are many options for wireless and not every device is IP addressable – a requisite feature for IoT. There are many wireless interface options, Wi-Fi, Bluetooth Low Energy (BLE), ZigBee, Z-Wave, Lora, RFID and Satellite, each with their own unique balance of power, range, data rates, mesh networking, interference immunity, and ease of use. However, some interfaces are not yet native-IP enabled, so cannot be addressed directly or exchange data with other devices and servers over the Internet. These then require a separate gateway, adding expense and complexity to the final solution.

PAN9420 Wi-Fi module

This is where Wi-Fi stands out: it is based on the IEEE 802.11 standards with native IP addressability, is ubiquitous, well understood, and can scale well in terms of data rates to optimize for power consumption. The PAN9420 is a 2.4 GHz ISM band Wi-Fi-embedded module from Panasonic.

The PAN9420 is a fully embedded stand-alone 2.4 GHz 802.11 b/g/n Wi-Fi module and the successor of the PAN9320.  It includes a wireless radio and an MCU for easy integration of Wi-Fi connectivity into various electronic devices. The module is specifically designed for highly integrated and cost-effective applications and includes a fully shielded case, integrated crystal oscillators, and a chip antenna.

The PAN9420 is a 29.0×13.5×2.66mm SMT package with a fully shielded case and a high-performance Marvell® 88MW300 MCU/WLAN System-on-Chip (SoC) inside, an integrated crystal oscillator at 38.4MHz, a clock crystal at 32.768KHz, medium access controller, encryption unit, boot ROM with patching capability, internal SRAM, and a chip antenna with option for a selectable external antenna. It also comes with an integrated web server, over-the-air firmware update, two UART interfaces, and a full security suite.

Block Diagram for the PAN9420 module

Simultaneous Wi-Fi connections can easily be implemented from the module with other smart devices as a result of its support for parallel access point and infrastructure mode. Client (STA), a micro access point (μAP), and Ad-hoc mode (Wi-Fi Direct) applications are enabled by the pre-programmed Wi-Fi SoC firmware. Raw data can be sent over the air from UART to smart devices, web servers, or PC applications with the transparent mode.

Unlike the PAN9320, the PAN9420 has an enhanced temperature range of -40 °C to +85 °C and reduced power consumption in transmitting, idle and power down. The PAN9320 and PAN9420 both have the same PCB configuration making it easy to migrate from PAN9320 without any changes to the PCB design. With a power supply of 3.0 to 3.6V and a power down mode current consumption less than 1mA, the PAN9420 is suitable for low power applications and should run comfortably with coin cell batteries.

It’s available in an Evaluation Kit containing one PAN9420 Mother Board (MB), one PAN9420-ETU daughter board which includes the PAN9420 FCC approved version, and one USB-cable packaged in a large case. The PAN9420 FCC version module already comes preinstalled with a firmware for easy deploying IoT based applications. The Evaluation Kit is going for around $128 and the PAN9420 module is costing at about $20.76 on digikey.

iWave releases first Xilinx Zynq 7000 based SOM Module

The Zynq 7000 family based on the All Programmable SoC architecture are processor-center platforms that offer software, hardware and I/O programmability in a single chip.

iWave Systems which has released several Altera based FPGA system on modules has just announced its SODIMM (Small Outline Dual In-Line Memory Module) form-factor Xilinx Zynq based module known as the iWave’s iW-RainboW-G28M. The iW-RainboW-G28M features the Xilinx Zynq 7000 series SOC with Dual Cortex A9 CPU @ 866MHz, 85K FPGA logic cells, and up to 125 FPGA IOs.

iWave iW-RainboW-G28M SOM

The iWave iW-RainboW-G28M is compatible with the Zynq Z-7007S, Z-7014S, Z-7010, and Z-7020 SoC. Equipped with an onboard 512 Mbytes of NAND Flash, 512Mbytes of DDR3 SDRAM, Gigabit Ethernet, USB 2.0 ports, an optional Micro SD slot, and an optional WIFI/Bluetooth module with a form-factor of 67.6 mm x 37 mm plug-in SODIMM style. It supports -40 to 85oC temperatures and powered through the SOM edge connector with a 3.3 DC Volt.

SOM Block Diagram

The following are the SOM specifications:

  • SoC –
    • Xilinx Zyng 7000 SoC
    • Single/Dual Cortex A9 @ up to 866MHz
    • Up to 85K logic cells
  • SoC Compatibility –
    • Compatible with Z-7007S, Z-7014S, Z-7010, and Z-7020
  • Memory –
    • 512 MB DDR3 and expandable to 1GB
    • 512 MB NAND Flash
    • An Optional QSPI Flash
    • Optional Micro SD Slot/eMMC (Optional)
  • Zynq PS & PL Interfaces –
    • Gigabit Ethernet x1 Port
    • USB 2.0 OTG x 1 Port
    • SD (4bit) x 1 Port
    • Debug UART
    • JTAG Port
    • 60 LVDS/120 SE FPGA IOs
  • SOM Features –
    • PMIC with RTC
    • Gigabit Ethernet Transceiver
    • USB 2.0 Transceiver
    • Optional Wi-Fi and Bluetooth Module
  • OS Support –
    • PetaLinux 4.9.0
  • Power Supply –
    • 3V DC
  • Temperature Support –
    • -400C to +850C
  • Dimension –
    • 6mm x 37mm

The iW-RainboW-G28M has applications in the areas of Industrial Automation, Machine Vision, Control & Measurement, Scientific Instruments and Medical Instruments. For pricing and availability, please contact iWave directly iW-RainboW-G28M SODIMM SOM.

ESP8266 WiFi Analyzer

This instrucatables show how to make an ESP8266 version WiFi Analyzer clone.

WiFi Analyzer is a handy app in Android, it help to visualize the WiFi signal information around you. It is very useful for helping select a right channel for setting a new AP. If you selected a channel that as same as another AP near you, you may encounter interference and degrade the network performance.

ESP8266 WiFi Analyzer – [Link]

Wi-Lamp, the Open Source Wi-Fi LED lamp

LucaBellan @ open-electronics.org discuss about a multi-function LED lamp that is always connected over WiFi.

Since several years already, it is possible to find systems for home automation: irrigation, doors and windows, lighting, air conditioning and alarm systems, everything can be centralized and planned. Recently, the classical control boxes have been replaced by smart systems that are always connected to the Wi-Fi Network and that can be remotely accessed by means of mobile devices such as smartphones or tablets.

Wi-Lamp, the Open Source Wi-Fi LED lamp – [Link]

HeartyPatch – Open source ECG patch with Wifi

An ECG patch with HRV monitoring that’s open source, affordable, and Wi-Fi/Bluetooth connected.

HeartyPatch is a completely open source, single-lead, ECG-HR wearable patch with HRV (Heart Rate Variability) analysis. It is based on the popular ESP32 system-on-a-chip. By using low-cost, highly-integrated components, we are able to keep the BOM’s cost low, while the simplicity of the circuit design means future expansion will be easier. HeartyPatch can be used both as a lifestyle device for managing fitness and stress as well as for diagnostics and medical research, with the potential for even more interesting applications.

HeartyPatch – Open source ECG patch with Wifi – [Link]

IoT Projects Is Now Easier With Bolt IoT Platform

Internet of Things (IoT) is one of the most important technologies these days. It became an essential component of many hardware projects core. And in order to make it easier for developers, Bolt IoT platform appeared as a complete solution for IoT projects.

Bolt is a combination of hardware and cloud service that allow users control their devices and collect data in safe and secure methods. It also can give actionable insights using machine learning algorithms with just some few clicks.

The platform consists of three main components, Bolt hardware module, Bolt cloud, and analytics. The hardware module is a WiFi chip with a built-in 80 MHz 32-bit RISC CPU that operates at 3.3v. It also works as an interface for a set of sensors and actuators through GPIO and UART pins to collect data and react with it.

Bolt Hardware

The next part is Bolt cloud which used mainly for configuring, monitoring, and controlling connected devices. It is a visual interface enables users to setup hardware and prepare the system easily and quickly. In addition, there is a code editor to write and edit codes for the hardware. The special feature is that you can reprogram the system remotely!

Finally, the analysis and monitoring unit provide visualized insights based on machine learning algorithms. The collected data are stored securely on the cloud, and the reports are presented as graphs, charts, or any customized visualization.

Bolt IoT Platform Features

  • A Wifi or a GSM chip
    An easy interface to quickly connect your hardware to cloud over GPIO, UART, and ADC. Also, connects to MODBUS, I2C, and SPI with an additional converter.
  • Robust Communication
    Bolt is equipped with industry standard protocols to ensure a Secure and fast communication of your device data with cloud.
  • Security
    Bolt has built-in safeguards to secure all user data from unwanted third party intrusions and hacks.
  • Machine Learning
    Deploy machine learning algorithms with just a few clicks to detect anomalies as well as predict sensor values.
  • Alerts
    Utilize Bolt’s quick alert system providing invaluable information sent directly to your phone or Email. You can config the contact details and set the threshold.
  • Mobile App Ready
    Customize and control your devices through Mobile apps. Bolt gives you full freedom to design your own mobile app centered around your requirements to monitor and control.
  • Global Infrastructure and Easy Scalability
    Bolt lets you scale from prototype to millions of devices in just a few weeks time.
  • Over the air updates
    Simultaneously program or update all your Bolt powered IoT devices wherever they are. Bolt offers you unparalleled scalability and elasticity to help your business grow.

The scope of applications that may benefit from using Bolt is very wide, including environmental applications, smart cities, electricity management, and much more. Bolt is available for ordering in two packages, the first is for developers and the other is for enterprises. Developers option contains one Bolt unit with three free months of cloud services, and its cost is about $75.

At last, Bolt makers are launching a Kickstarter campaign on the 3rd of November 2017. If you are interested and want to know more about this platform, take a look at the official website and read this detailed features document. Update 6-11-2017 – They achieved the goal of $10,000 USD funding in just 5 hours from launch!