ESPurna is an open source firmware for ESP8266 based wireless switch as such Sonoff POW, which I’ve been personally using to monitor my office’s power consumption. The developer, Xose Pérez (aka tinkerman), has now developed his own hardware with ESPurna-H board, as existing wireless switches with power monitoring functions would not fit into a gang box. ESPurna-H board specifications: WiFi Module – ESP12 with Espressif ESP8266 WiSoC Relay – Songle SRD-05VDC-SL-C 10A relay with NO and NC connection Power Monitoring – HLW8012 chip as found in Sonoff POW Expansion – 2x 5-pin header with the programming GPIOs, and two connections for external button and LEDs Misc – Reset button Power Supply Input – 100 ~ 240V AC Output – 5V up to 600 mA via Hi-Link HLK-PM01 Safety – Optical isolation between the logic circuit and the relay circuit Dimensions – 50x50x20mm Xose designed the board with Eagle 8.0 and released […]
Transform Your ESP8266 Board into a USB to Serial Board Easily with Arduino Serial Bypass Sketch
USB to serial boards are necessary to program and debug boards, and/or access the serial console, and while they are very cheap, you may be in a situation where you don’t have any around, but you do have some Arduino compatible boards. It’s been possible to transform an Arduino board into a USB to TTL debug for several years using ArduinoSerialBypass.ino sketch, but I’ve been informed this also works on ESP8266 boards such as Wemos D1 Mini. The sketch could not be simpler:
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void setup() { pinMode(0,INPUT); pinMode(1,INPUT); } void loop() { } |
The code simply makes sure that Tx and Rx pins are set as inputs in order not to disturb the serial connection as explained below: This code makes the Arduino not interfere with pins 0 and 1 which are connected to RX and TX on the FTDI chip. This allows the data coming from the FTDI USB 2 Serial chip to flow directly to another device. […]
Hornbill ESP32 Development Boards Come with an Optional IP67 Rated Enclosure (Crowdfunding)
While there are plenty of ESP32 development boards, and prices have recently plummeted, getting a case for your project can still be a problem especially if you plan to use it outdoor, as you need to protect your hardware from rain and dust. Hornbill project offers two ESP-WROOM-32 based boards, a prototype board, and an IP67 certified case that could be useful for outdoor use. Hornbill ESP32 Development Boards Let’s start by checking the boards available starting with ” Hornbill ESP32 Dev” board with the following specs: ESP-WROOM-32 module with WiFi, Bluetooth LE, FCC, CE, IC, MIC (Telec), KCC, and NCC certifications I/O headers 2x 19-pin headers with GPIOs, I2C, UART, SPI, ADC, DAC, touch interface, VN/VP, 5V, 3.3V and GND Breadboard-friendly Debug – Built-in CP21XX USB-to-serial Power Supply – 5V via micro USB port, battery header + single cell LiPo charger Dimensions – TBD ESP32 Minima is also based […]
GIGABYTE BRIX IoT Apollo Lake Fanless mini PC is Designed for the Internet of Things, Digital Signage, Thin Clients
GIGABYTE has unveiled BRIX IoT mini PC powered by either Intel Celeron N3450 or Pentium N4200 processor both part of Intel’s Apollo Lake family, and as the name implied the devices target Internet of Things applications. GIGABYTE BRIX IoT specifications: SoC (one or the other) Intel Celeron N3450 quad core processor @ up to 2.2GHz with Intel HD graphics 500 (6W TDP) Intel Pentium N4200 quad core processor @ up to 2.5GHz with Intel HD graphics 505 (6W TDP) System Memory – 2x SO-DIMM DDR3L slots @ 1333/1600/1866 MHz up to 8GB Storage – 1x M.2 slot, 1x micro SD slot, optional 32 or 64GB eMMC flash Connectivity Dual Gigabit Ethernet via Realtek RTL8111HS Intel Dual band Wireless-AC 3165 module with two SMA antenna connectors 3G via mini PCIe slot and SIM card slot with one SMA antenna connector Video Output – Dual HDMI 1.4b up to 3840×2160 @ 30 […]
UDOO BLU and BLU SENSE IoT Modules Integrate Bluetooth LE, Zigbee, and 6LOWPAN Connectivity
UDOO is known for their Linux boards based on NXP and Intel processors for makers and the education market such as UDOO NEO or UDOO x86, but the company has now developed UDOO BLU and BLU SENSE battery powered modules based on Texas Instruments CC2650 ARM Cortex M3 microcontroller, both with Bluetooth LE, Zigbee, and 6LOWPAN connectivity, and the SENSE model adds some extra sensors. UDOO BLU and BLU SENSE specifications: Wireless MCU – Texas Instruments CC2650 ARM Cortex M3 MCU @ 48 MHz with 128KB flash, 8KB SRAM with 2.4 GHz radio Connectivity – Bluetooth Low Energy (BLE), ZigBee, 6LoWPAN Sensors (BLU SENSE only) – NXP FX0S8700CQ accelerometer & magnetometer sensor, NXP FXAS21002C gyroscope & temperature sensor Expansion 1x 5-pin sensors Snap-In I2C connector for UDOO Bricks 2x 10-pin headers with 8x Digital GPIOs, 6x ADCs, 1x I2C, 1x SPI, 1x UART Misc – 3x User Configurable LEDs (Red, […]
Xiaomi Mi Pad 3 Tablet Launched with Mediatek MT8176 Hexa-Core Processor, 7.9″ Display
Xiaomi Mi Pad 2 was powered by an Intel Cherry Trail, but the Chinese company has decided to go back to ARM for the third iteration of their MiPad tablet as they used Mediatek MT8719 hexa-core Cortex A72/A52 processor with 4GB RAM, 64GB flash, and the same 7.9″ display with 2048 x 1536 resolution. Xiaomi Mi Pad 3 specifications: SoC – Mediatek MT8176 hexa-core processor with 2x ARM Cortex A72 cores @ 2.1 GHz, 4x ARM Cortex A53 cores @ 1.7 GHz, and Imagination PowerVR GX6250 GPU System Memory – 4GB LPDDR3 Storage – 64GB eMMC flash, no micro SD slot Display – 7.9″ capacitive touch screen IPS LCD display with 2048 x 1536 resolution Audio – 3.5mm headphone jack, Connectivity – Dual band 802.11 b/g/n/ac WiFi, Bluetooth 4.2 LE Camera – 5MP front-facing camera, 13 MP rear camera with auto-focus, dual LED flash USB – 1x USB type C […]
Microsoft is Working with Mediatek on Project Sopris Secure WiFi MCU
There are serious security issues with the Internet of Things at all levels: hardware, software, network, and end-users. Microsoft Research NExT Operating Systems Technologies Group has been tasked with “exploring the goal of securing the vast number of low cost Internet connected devices coming online” with Project Sopris. They have shared their first technical report that identifies “seven properties of highly secure devices”, and describes their experiments towards designing microcontroller based prototype devices adapted from Mediatek MT7687 MIPS microcontroller, and exhibiting those seven properties. The seven properties identifies by Microsoft team include: Hardware-based Root of Trust – Unforgeable cryptographic keys generated and protected by hardware. Physical countermeasures resist side-channel attacks. Small Trusted Computing Base – Private keys stored in a hardware-protected vault, inaccessible to software. Division of software into self-protecting layers. Defense in Depth – Multiple mitigations applied against each threat. Countermeasures mitigate the consequences of a successful attack on […]
Embedded Systems Conference 2017 Schedule – May 3-4
The Embedded Systems Conference 2017 will take place over two days in Boston, US on May 3-4, and the organizers have published the schedule of the event. Even if you’re not going to attend, you’ll often learn something or find new information by just checking out the talks and abstracts, so I’ve created my own virtual schedule with some of the most interesting sessions. Wednesday, May 3rd 08:00 – 08:45 – Combining OpenCV and High Level Synthesis to Accelerate your FPGA / SoC EV Application by Adam Taylor, Adiuvo Engineering & Training Ltd This session will demonstrate how you can combine commonly used Open source frameworks such as OpenCV with High Level Synthesis to generate a embedded vision system using FPGA / SoC. The combination of OpenCV and HLS allows for a much faster algorithm development time and consequently a faster time to market for the end application. 09:00 – 09:45 […]