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4-channel voltage supervisors accurate to ±0.5%

Posted on by mixos


Analog Devices’ LTC2962-LTC2964 family of 4-channel voltage supervisors has been designed with exceptional accuracy for increased system voltage margin and enhanced reliability. [via]

ASIC, FPGA, DSP, MCU and MPU architectures that operate from supplies as low as 1V cannot utilize traditional 1%-2% accurate voltage supervisors without shedding valuable system voltage margin and shrinking the remaining load operating voltage range. The LTC2962 family possesses a best-in-class ±0.5% reset threshold accuracy, which relaxes power supply demands, increases system tolerance to transients, and enabling a lower nominal supply to dramatically reduce power consumption. The LTC2962 family fulfills many network, telecom and automotive requirements with its high accuracy, flexible 1V to 5V (or adjustable) reset thresholds, and wide operating temperature range. For each channel, one of 16 preset or adjustable, ±0.5% accurate, voltage thresholds can be selected for undervoltage, overvoltage or negative monitoring. The supervisory circuits monitor inputs and drive the outputs according to the configured thresholds. Alternatively, a manual reset input is also available for optional use of a pushbutton switch to force a system reset. The devices come in multiple temperature grades: 0°C to 70°C (C grade), –40°C to 85°C (I grade), and –40°C to 125°C (H grade), in a 16-lead 3x3mm QFN or 20-lead 3x4mm QFN package.Analog Devices – www.analog.com

Pico – The World’s Smallest Arduino 328PB Core.

Posted on by mixos

Pico – tiny & powerful. More features and performance than an Arduino Uno in a tiny, quarter-sized board that’s breadboard compatible. [via]

The Pico is still the smallest Arduino development board on the planet, at 20.32×20.32mm. It’s breadboard compatible, and offers roughly the same amount of flash (31.5/32Kb), 1Kb of EEPROM, and 2Kb of onboard SRAM. You’ll also find the same 18V max input, tactile reset switch, micro USB, and LED indicators.

The most significant addition, though, has to go to the 328PB’s onboard capacitive-sensing hardware, specifically a Microchip QTouch PTC (8-bit AVR), which allows you to run capacitive touch buttons without the need for additional ICs and supports both self (up to 24 buttons) and mutual (up to 144 buttons) capacitance sensors.

Pico – The World’s Smallest Arduino 328PB Core – [Link]

The NANO-002: Industrial Power in the Palm of Your Hand

Posted on by mixos

(Taipei, Taiwan – September 11, 2018) – AAEON, a global leader in the development of innovative IPC solutions, launches the NANO-002, a mini PC with the power and flexibility to manage tough applications in the factory, office, and off-site locations.

Fitted with a 6th generation Intel® Core™ or Celeron® 3955U CPU, the NANO-002 is a low-power-consumption unit with fast, dependable processing speeds. With the option of two SODIMM sockets, users can take advantage of up to 32G dual-channel DDR4 memory, and additional storage is available via an M.2 M Key, which enables PCIe[x4] and SATA slots.

The NANO-002 is ideal for media player, digital signage and POS applications. Its dual HDMI ports enable 4K Ultra HD graphics on two displays. With a COM port, two LAN ports, and four USB3.0 ports, the PC can easily be connected to a range of other devices, and an M.2 E Key enables greater system flexibility.

As an industrial solution, the NANO-002 offers protection against vibrations and sudden impacts, and the system has 12V-5%~19V+10% wide voltage power support. The PC is available in either fanless (NANO-002N) or fan-assisted (NANO-002F) configurations, giving users the choice of 0oC~40oC or 0oC~50oC operating temperature ranges.

There are other mini PCs on the market, but nothing can match the NANO-002’s range of features and industrial-grade strength, reliability, and resilience.

said AAEON product manager Lauren Luo.

SimpleSleep – Arduino Sleep modes Library

Posted on by mixos

An Arduino library for simple means of putting your Arduino into sleep modes in order to save power when you are not doing much, supports a variety of common microcontrollers used with Arduino…

Deep and Dreamless Slumber (Forever Sleep)

Sleeping forever is the simplest type of sleep and uses the least power, but only a RESET (or power-cycle of course) will wake you up. This can be very useful for “hit the button to do a thing” type devices, “hit the button play a sound”, “hit the button light a light”… you just stick your button between RESET and Ground then in your code sleep forever when you have done the thing you want to do every time you hit the button…

SimpleSleep – Arduino Sleep modes Library – [Link]

Build a Multisensor Shield for ESP8266

Posted on by mixos


Rui Santos has a great write-up on building a Multisensor Shield for ESP8266, that is available on GitHub:

In this project you’ll discover how to design and create a Multisensor Shield for the ESP8266 Wemos D1 Mini board. The shield has temperature sensor (DS18B20), a PIR motion sensor, an LDR, and a terminal to connect a relay module. We’ll start by preparing all the hardware and then program it.

Build a Multisensor Shield for ESP8266 – [Link]

Power Stage Designer™ Tool – Design Switch-mode Power Supplies with ease

Posted on by mixos

Power Stage DesignerTM is a JAVA based tool that helps engineers accelerate their power-supply designs by calculating voltages and currents of 20 topologies according to the user’s inputs. Additionally, Power Stage Designer contains a Bode plotting tool and a toolbox with various functions to make power supply design easier. Because all calculations are executed in real time, this is the quickest tool to start a new power supply design.

  • Topology Window – Provides topology information and component waveforms based on input parameters
  • FET Losses Calculator – Compares the performance of different FETs
  • Capacitor Current Sharing Calculator – Displays how RMS current is distributed among parallel capacitors
  • AC/DC-Bulk Capacitor Calculator – Helps to select the right bulk capacitance for AC/DC-power supplies
  • RC-Snubber Calculator for Rectifiers – Assists with choosing the right RC-snubber values to reduce ringing across rectifiers
  • RCD-Snubber Calculator for Flyback Converters – Helps to reduce switching node ringing in flyback converters
  • Output Voltage Resistor Divider Calculator – Calculates the output feedback resistor divider
  • Dynamic Analog Output Voltage Scaling Calculator – Provides the resistance values for the output feedback network to support output voltage variation
  • Dynamic Digital Output Voltage Scaling Calculator – Includes the resistance values for the output feedback network to support output voltage variation
  • Unit Converter – Converts different power supply related units
  • Loop Calculator – Helps to determine the compensation network for different topologies

CO2Meter uses GSS sensors for new CO2 alarms

Posted on by mixos
CO2Meter is using Gas Sensing Solutions’ (GSS) ExplorIR-W LED-based CO2 sensor to measure concentrations of up to 100% in its extended range of CO2 detection devices. [via]

CO2Meter recently added the iSense alarm (CM-0052) to its range of CO2 alarms, which can handle up to 100% concentrations of CO2. The company used GSS’ ExplorIR-W with voltage output in the iSense sampling logger alarm to enable it to extend the measurement range up to 100% CO2 for specific industry applications. The iSense alarm (CM-0052) is suitable for both permanent and temporary installations in industrial applications. It can be used for a range of different processes, including monitoring and control, long-range data collection, sampling inspections, remote deployment and CO2 leak detection.

more: https://www.co2meter.com/collections/scientific-industrial/products/co2-rechargeable-100-data-logging-in-nema4-box

OpenLogger: Wi-Fi Enabled Data Logger

Posted on by mixos

Stream and log data with the first high resolution, open source, portable data logger that will launch soon on Crowdsupply.

OpenLogger is an open source, low-cost, data logging platform. With the option of Wi-Fi or USB connectivity and microSD card storage, you can remotely monitor data in real-time or store data files for later collection and analysis. The hardware connects to a mobile browser-based application software interface, Waveforms Live. This software is free of charge and open source.

The hardware and software combination provides the following: 8 data logging channels, 8 digital inputs and outputs, two power supplies, and one analog output.

OpenLogger is designed for electronics and data collection enthusiasts wishing for an experience with constraints of high resolution, a wireless connection, open source software, and a low-cost AND user-friendly experience.

Key Features

  • Data Logging is available to a µSD card
  • Streaming via WiFi or USB to WaveFormsLive.com
  • Eight analog data logging channels, with 16-bit resolution
  • Sampling rates up to 400 kS/s and as slow as one sample every 11.5 days
  • One analog output capable of function generation
  • Eight Digital Inputs and Outputs
  • Two 4V Power Supplies
  • Barrel jack connector for providing external power
  • Easy to use browser-based user interface and available API

An ESP32 core board with wired Ethernet connectivity and PoE

Posted on by mixos

The wESP32 is an ESP32 core board with wired Ethernet connectivity and Power over Ethernet that was designed to help Makers quickly create zero-setup single-wire-install connected devices. By combining a powerful microcontroller with excellent community support, 13 W of power, and reliable connectivity in a compact footprint, the wESP32 gives you a head start in your next IoT design and allows you to focus on your application.

  • Espressif Systems ESP32-WROOM-32 module with all the features, performance and community support that it brings to the table
  • Optional wESP32-Prog module for programming and/or serial console can be plugged in as needed or soldered in permanently
  • IEEE 802.3at Type 1 Class 0 compliant PoE with 12.95+ W of power available at the default 12 V output setting for V+
  • Optional 5 V output setting for V+ configurable by solder jumper with 5 W of power available
  • 3.3 V output with up to 6 W output power available (power taken from V+)
  • Applying external power to V+ is supported, in case PoE is not available
  • Applying power through the wESP32-Prog USB port is supported (only provides 5 V on V+)
  • High performance RJ-45 jack with optimized data path provides excellent data throughput allowing iperf UDP scores up to 90 Mbit/s
  • Compatible with PoE Mode A (power over data pairs) and PoE Mode B (power over spare pairs) and Auto-MDIX allowing the use of straight and cross-over Ethernet cables
  • Designed with full data and power path isolation to comply with the IEEE 802.3at 1500 Vrms isolation requirement
  • High quality PCB with 2 oz copper and mounting hole designed to sink heat away from the PoE PD controller for optimal thermal performance
  • 20-pin header footprint with 3.3 V, V+ power and 15 of the ESP32 GPIOs available for your application

The project is comming on CrowdSupply soon. UPDATE 9/10/2018: The project is live on Crowdsupply.

Humiduino – An automated humidor using Arduino

Posted on by mixos

Matthias Dankers build his own cigarette humidor controlled by Arduino. He writes:

For the optimal storage of cigars you would want a box with a so called ‘Caribbean’ climate inside; warm and very humid. Translated in numbers that would be 21 degrees Celcius (70F) and 70% relative humidity. That climate has to be maintained to ensure the optimal storage of cigars. No matter what the outside climate is.

Most humidors you can buy are equipped with 2 essential parts. A humidifier and a hygrometer. Both used to maintain the right humidity. They don’t bother to cool or heat the humidor to the right temperature because it’s assumed that the humidor is going to be placed inside your house where central heating or cooling will maintain the temperature.

Humiduino – An automated humidor using Arduino – [Link]

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