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Mouser now shipping Laird Connectivity Wi-Fi triple-band antenna

Posted on by mixos

Mouser Electronics is now shipping the FlexPIFA 6E antenna which provides consistent performance across all three Wi-Fi bands.

Laird Connectivity FlexPIFA 6E Wi-Fi® Triple-Band Internal Antennas support the full Wi-Fi spectrum in the 2400MHz to 2500MHz, 4900MHz to 5925MHz, and 5925MHz to 7125MHz frequency bands. These antennas are designed for rapid integration into space-constrained devices and housings. The flexible, adhesive-backed antennas with MHF1 connectors provide multiple installation solutions for IoT device manufacturers. Integrated PIFA technology provides consistent, stable performance across all three Wi-Fi bands, ensuring a solid and reliable connection at all times. The FlexPIFA 6E Antennas are an ideal solution for coverage of traditional Wi-Fi frequencies with futureproofing for emerging Wi-Fi 6E applications.

Specifications

  • 2400MHz to 2500MHz band
    • 1.4:1 average VSWR, <2.5:1 maximum
    • 2.2dBi peak gain
    • 59%/-2.3dB average efficiency
  • 4900MHz to 5925MHz band
    • 1.9:1 average VSWR, <3.0:1 maximum
    • 3.9dBi peak gain
    • 60%/-2.2dB average efficiency
  • 5925MHz to 7125MHz band
    • 1.6:1 average VSWR, <3.0:1 maximum
    • 3.89dBi peak gain
    • 60%/-2.2dB average efficiency
  • Single port
  • 50Ω nominal impedance
  • 5W maximum power at an ambient +25°C
  • Linear polarization
  • 360°, omnidirectional azimuth beamwidth
  • 16mm x 36mm x 2.5mm (0.62″ x 1.41″ x 0.098″) in dimension (LxWxH)
  • 3M 467MP adhesive
  • ø1.13mm x 100mm cable length
  • MHF1 or MHF4L connectors
  • -40°C to +85°C temperature range

Features

  • Full coverage, high-performance operation over three Wi-Fi bands
  • Flexible, peel-and-stick adhesive-backed antenna for space-constrained applications
  • Future-proofed with coverage for emerging Wi-Fi 6E applications
  • Allows easy PIFA technology integration into IoT devices and is less likely to detune in proximity to metal or a human body
  • 5-year warranty
  • RoHS compliant

more information: https://www.lairdconnect.com

MP8833 1.5 A Thermoelectric Cooler Controller

Posted on by mixos

Monolithic Power Systems monolithic thermoelectric cooler controller has built-in internal power MOSFETs

Monolithic Power Systems introduces the MP8833, a monolithic thermoelectric cooler controller with built-in internal power MOSFETs. It achieves 1.5 A of continuous output current from a 2.7 V to 5.5 V input voltage range with a thermoelectric cooler (TEC) voltage range. The TEC voltage is linearly controlled by the analog voltage. Features such as TEC voltage and current limiting are controlled by the 400 kHz I2C serial interface. The MP8833 is ideal for TEC device applications such as optical laser diodes and fiber communication networks. Full protection features include internal soft-start, over-current protection (OCP), over-voltage protection (OVP), and over-temperature protection (OTP). The MP8833 is available in a QFN-16 (2 mm x 3 mm) package for a minimum solution size.

Features

  • 1% 2.5 VREF accuracy
  • Operating input range: 2.7 V to 5.5 V
  • Up to 1.5 A TEC current
  • TEC current monitor
  • 30 mΩ internal MOSFETs for PWM switches and linear switches
  • Default 1 MHz switching frequency
  • External SYNC function
  • EN/SD for power sequencing
  • Available in a QFN-16 (2 mm x 3 mm) package

more information: https://www.monolithicpower.com/en/mp8833.html

MP2384C Synchronous Buck Converter with Forced CCM

Posted on by mixos

MPS’ 24 V, 4 A, low IQ converter requires a minimal number of external components and is available in a QFN-11 (2 mm x 2 mm) package

MPS’ MP2384C fully integrated, high-frequency, synchronous, rectified, step-down, switch-mode converter with forced continuous conduction mode (CCM) offers a highly compact solution that achieves 4 A of continuous output current. The device operates at high efficiency over a wide output current load range based on MPS’ proprietary switching loss reduction technique and internal low RDS(ON) power MOSFETs. Adaptive constant on-time (COT) control mode provides fast transient response and eases loop stabilization.

The DC auto-tune loop combines with the remote differential sense to provide good load and line regulation. Full protection features include overcurrent protection (OCP), overvoltage protection (OVP), Undervoltage protection (UVP), and thermal shutdown. The converter requires a minimal number of external components and is available in a QFN-11 (2 mm x 2 mm) package.

Features

  • Wide operating input range: 4.5 V to 24 V
  • Low quiescent current: 105 µA
  • Continuous output current: 4 A
  • Adaptive COT control for fast transient
  • DC auto-tune loop
  • Forced PWM operation
  • Power good (PG) indication
  • Low RDS(ON) internal power MOSFETs
  • Fixed switching frequency: 700 kHz
  • Stable with POSCAP and ceramic capacitors
  • Reference voltage: 1%
  • Internal soft-start (SS)
  • Output discharge
  • OCP, OVP, UVP, and thermal shutdown with auto-retry
  • Available in a QFN-11 (2 mm x 2 mm) package

more information: https://www.monolithicpower.com/en/mp2384c.html

Axiomtek KIWI310 1.8″ Embedded SBC

Posted on by mixos

Axiomtek KIWI310 1.8″ Embedded SBC is a credit card sized computer with a small 85mm x 56mm form factor. The KIWI310 is an excellent choice for use within space-constrained environments. The SBC has a high-performance design and is powered by the Intel® Celeron® processor N3350 with the Intel® integrated Gen9 graphic engine. It comes standard as either 2GB LPDDR4 onboard memory with 32GB eMMC or 4GB LPDDR4 onboard memory with 64GB eMMC.

Features

  • Tiny 1.8-inch embedded board
  • Intel® Celeron® processor N3350 onboard
  • On-board 2GB LPDDR4 with 32GB eMMC or 4GB LPDDR4 with 64GB eMMC
  • One GbE LAN and one M.2 Key E
  • On-board eMMC for up to 64GB
  • 40-pin GPIO
  • Supports operating systems Linux, Android, Windows

more information: https://www.axiomtek.com/Default.aspx?MenuId=Products&FunctionId=ProductView&ItemId=26237&C=KIWI310&upcat=383

10W Class-D Stereo Audio Amplifier with Mute, Shutdown and Four Gain Settings

This is a Class-D Stereo audio amplifier project that provides 10W stereo output. The amplifier includes Gain control using 2 x Jumpers, Mute function, and shutdown function.

RCA female connectors are provided for the audio source input, screw terminals are provided for an easy interface with speakers and power supply input. The project was built using a TPA3125D2 chip from TI.

The TPA3125D2 is a 10-W (per channel), efficient, Class-D audio power amplifier for driving stereo speakers in a single-ended configuration; or, a mono speaker in a bridge-tied-load configuration. The TPA3125D2 can drive stereo speakers as low as 4 Ω. The efficiency of the TPA3125D2 eliminates the need for an external heat sink when playing music. The gain of the amplifier is controlled by two gain select pins. The gain selections are 20, 26, 32, and 36 dB. The patented start-up and shutdown sequences minimize pop noise in the speakers without additional circuitry.

Gain Setting Jumper J3 & J4 (J3=Gain1 & J4=Gain0) OFF Denotes Jumper Removed/Open, On Denotes Jumper Closed/Installed

  • Gain-1 ON + Gain-0 ON = Amplifier Gain (dB) 20
  • Gain-1 ON + Gain-0 OFF = Amplifier Gain (dB) 26
  • Gain-1 OFF + Gain-0 ON = Amplifier Gain (dB) 32
  • Gain-1 OFF + Gain-0 OFF = Amplifier Gain (dB) 20

Input Resistance

Changing the gain setting can vary the input resistance of the amplifier from its smallest value, 9Kohms +/-20%, to the largest value, 60Kohms +/-20%.

Mute and Shutdown Function (Jumper J1-Mute & J2-Shutdown)

  • Jumper J1 Open Normal Operation, J1 Closed Mute On
  • Jumper J2 Open Normal Operation, J2 Closed Shutdown On

Features

  • Power Supply 12V DC (Range 10V to 26V DC)
  • Supply Current 3A
  • Output 10W (24V DC Supply)
  • Speaker 8 Ohms (Minimum Speaker Load 4 Ohms)
  • 2 x Single Ended Audio Signal Input
  • Jumper J1 Mute Function
  • Jumper J2 Shutdown Function
  • Four Selectable Gain Settings (Jumper J3 and J4)
  • Thermal and Short Circuit Protection with Auto Recovery
  • PCB Dimensions 52.71 x 63.82 mm

Schematic

Parts List

NOQNTYREFDESCMANUFACTURERSUPPLIERPART NO
11CN12 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1247-ND
21CN2RCA FEMALE CUI DEVICESDIGIKEYCP-1405-ND
31CN32 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1247-ND
41CN4RCA FEMALE CUI DEVICESDIGIKEYCP-1405-ND
51CN52 PIN SCREW TERMINAL PITCH 5.08MMPHOENIXDIGIKEY277-1247-ND
67C1,C2,C9,C10,1uF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
C12,C16,C191uF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
74C3,C4,C6,C17470uF/35VNICHICOMDIGIKEY493-12005-1-ND
83C5,C13,C201KPF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
92C7,C150.22uF/25V SMD SIZE 0805MURATA/YAGEODIGIKEY
102C8,C180.22uF/63V BOXEPCOS-TDKDIGIKEY495-2492-ND
111C111.5KPF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
121C1410uF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
131C211K5PF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
141D1LED SMD SIZE 0805LITE ON INCDIGIKEY160-1427-1-ND
154J1,J2,J3,J42 PIN HEADER PITCH 2.54MMWURTHDIGIKEY732-5315-ND
164L1,L2,L4,L6FERRITE BEAD 80OHMS/100MHZ SIZE 0805TDKDIGIKEY445-2187-1-ND
172L3,L533uH /2AMPCOIL CRAFTCOILCRAFTDO3316P-333MLD
184R1,R3,R6,R710K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
193R2,R5,R91K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
202R4,R810E 5% SMD SIZE 1206MURATA/YAGEODIGIKEY
211U1TPA3125D2TIDIGIKEY296-24090-5-ND
224SHUNTSHUNT FOR JUMPERSSULINS INCDIGIKEYS9001-ND

Connections

Gerber View

Photos

Video

TPA3125D2N Datasheet

3 Phase (3 Wire) EMI Filter – 480VAC

The project presented here is a 3 Phase (3Wire) EMI Power line filter which reduces electromagnetic interference and noise conducting in to and out of equipment power lines. These EMI filters can prevent electromagnetic noise of equipment going into the power line and disturb the proper functions of other devices such as communication devices, digital circuits, and robotics thus noise generated from switched power electronics. This single-stage board is designed and built using a high-quality common mode inductor and AC capacitors.  This filter can be used to filter EMI noise in AC power lines 480VAC and can handle currents up to 10A. 3 x fuses are provided for over current and short circuit protection. It is easy to connect inputs and outputs using Barrier’s screw terminals. 6 x 4.2MM mounting holes were provided for easy mounting of the PCB.

Features

  • High Quality 3 Phase EMI Filter Using Common Mode Inductor
  • Rated Input Supply up to 480V AC 50-60Hz
  • Horizontally Mounted Common Mode Choke
  • 3 x Fuse on All 3 Phase Inputs for Protections
  • 6 x 4.2 MM Mounting Holes
  • Barrier Screw Terminals for Inputs and Outputs
  • PCB Dimensions 217.17 x 70.49 mm

Schematic

Parts List

NOQNTY.REF.DESC.MANUFACTURERSUPPLIER PART NO
11CN13 PHASE OUTTE CONNECTIVITYA113643-ND
21CN23 PHASE INTE CONNECTIVITYA113643-ND
36C1,C3,C5,C6,C7,C101uF/480VVISHAYDIGIKEYF339X151048KKI2B0-ND
46C2,C4,C8,C9,C11,C124K7/3KVTDKDIGIKEY445-181053-ND
53F1,F2,F3FUSE HOLDERSSCHURTER INCDIGIKEY486-1992-ND
61L1B82747E6253A040TDKDIGIKEY495-7000-ND
73R1,R2,R3DNPDO NOT POPULATE
83R4,R5,R6220KTE CONNECTIVITYDIGIKEYA121185CT-ND
92FUSE15AMPSBUSSMANNMOUSER504-BK-S520-15-R

Connections

Gerber View

Photos

B82747E6253A040 Datasheet

Win 1 of 9 Development Boards from Arduino

Posted on by mixos

Including 3 x Arduino Nano IoTs, 3 x Arduino Nanos and 3 x Arduino Uno Rev 3s in partnership with Farnell

This month oemsecrets.com has teamed up with Farnell to give away 9 development boards from Arduino including 3 x Arduino Nano IoTs, 3 x Arduino Nanos and 3 x Arduino Uno Rev 3s.

Simply use the link below to enter.

ENTER NOW

Arduino Nano

The Arduino Nano is a small, complete, and breadboard-friendly board based on the ATmega328 (Arduino Nano 3.x). It has more or less the same functionality of the Arduino Duemilanove, but in a different package. It lacks only a DC power jack, and works with a Mini-B USB cable instead of a standard one.

Arduino Nano 33 IoT

The Arduino Nano 33 IoT is the easiest and cheapest point of entry to enhance existing devices (and creating new ones) to be part of the IoT and designing pico-network applications. Whether you are looking at building a sensor network connected to your office or home router, or if you want to create a BLE device sending data to a cellphone, the Nano 33 IoT is your one-stop-solution for many of the basic IoT application scenarios.

Arduino Uno Rev3

Arduino Uno is a microcontroller board based on the ATmega328P (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator (CSTCE16M0V53-R0), a USB connection, a power jack, an ICSP header and a reset button.

Scoppy: A Minimalist Oscilloscope and Logic Analyzer Powered by Raspberry Pi Pico

Posted on by DM

Oscilloscopes are one of the most essential laboratory tools for electrical engineers. These scopes graphically display varying signal voltages on a two-dimensional plot as a function of time. The waveforms can be used to analyze useful signal properties like amplitude, frequency, rise time, time interval, distortion, and many more. The signal to be measured are fed to an input connector via a coaxial connector. Oscilloscopes are widely used in the electrical field, telecommunications industry, automotive domain, scientific laboratories, and biomedical fields. For various applications, there are special-purpose oscilloscopes that can be used to analyze a particular signal as a function of time. For example, scopes can display the waveform of the heartbeat as an electrocardiogram.

But for many applications, you only need a fraction of the capabilities an oscilloscope has. And for low-frequency signal analysis, you may not need an expensive oscilloscope. For such minimal use cases, one can look to build a minimalist oscilloscope based on Raspberry Pi Pico, known as Scoppy. It is an oscilloscope and logic analyzer powered by Raspberry Pi Pico. It can display waveforms on your Android phone or tablet, and the signals to be analyzed are measured by the Pico board.

Scoppy is a very cheap 2-channel oscilloscope useful for analyzing low-voltage, low-frequency signals. All you need is an Android device, a USB OTG compatible with your Android device, and a Raspberry Pi Pico board.

The specifications of this oscilloscope are not so impressive. It features a maximum sampling rate of 500kS/s shared between two channels. The resolution in time/div is 5us to 20 s. The memory depth ranges between 2kpts and 20kpts in run mode shared between channels and up to 100kpts for single-shot captures. It depends on the sampling rate. Scoppy can also work as an 8-channel logic analyzer with a sample rate of 25MS/s. The input voltage range is limited between 0 and 3.3V, and the signal to be analyzed must be within this allowed range. For measuring out-of-range voltages, you will need analog circuitry like a voltage divider or something more complex, depending on your requirements.

Regarding the Scoppy app, it features many basic oscilloscope features like continuous and single-shot capture, adjustable trigger settings, and a scalable waveform plot.

For getting started, you will need to install the Scoppy Android app, install the firmware available here on the Pico board, connect the Pico to your Android device, and you are ready to go. To use Scoppy as a logic analyzer, you need to change the mode in the app to ‘Logic Analyzer’.

Logic Analyzer mode

Detailed installation instructions and firmware can be found via this link.

High-performance, Pocket-sized hackable LattePanda 3 Delta Computer Coming Soon

Posted on by Emmanuel Odunlade

China-based hardware company, LattePanda, has just made known its newest release called the LattePanda 3 Delta computer — an enhanced version of the previous LattePanda Delta.

The LattePanda 3 Delta is a pocket-sized hackable computer just like the previous version, except that it is equipped with a high-frequency processor and memory with larger storage for faster performance.

The LattePanda 3 Delta is powered by the newest Intel 11G 4M, quad-core processor N5105 with a clock speed of 2.9GHz. Compared to its previous versions, the CPU has a doubled processing speed while the GPU runs 3 times faster to support usage like playing a 4K HDR video and running heavy games. The hackable computer also has a dimension slightly larger than its previous version, maintaining a similar pinout and layout to allow for system migration or upgrading by replacement.

LattePanda 3 Delta features 8GB LPDDR4 RAM with 2933MHz frequency suitable for high-end performance such as running multiple web pages and multiple virtual systems. It is also equipped with 64GB eMMC V5.1 inbuilt storage, which is double the size of the old version, to allow for more software and data without the need for external storage.

The LattePanda 3 Delta is designed for high performance and easy access to the internet. It provides enhanced wire and wireless transfer to support extreme speed data transfer applications, with WiFi 6 with up to 2.4Gb/s throughput (2.7 times faster than the former), a 2nd Generation USB3.2 interface with 10Gb/s throughput (twice faster than a USB3.2 Gen1 of the previous version), and, 3 onboard Gigabit Ethernet interfaces with up to 1.0Gb/s throughput for super-fast Internet connectivity. The computer also replaced M.2E with M.2B key and is compatible with both M.2 4G and M.2 5G modules.

LattePanda 3 Delta is designed with a Watchdog Timer to recover itself and restart automatically and function normally after an event of a system crash. It also carries an Auto Power ON function to reboot itself automatically after a power shortage or emergency. There’s also a power ON or OFF control that helps to control the power independently especially when running battery-based systems.

Key Features and Specifications:

  • CPU: Intel N5105 @2.0~2.9GHz, 4 Core and 4M Cache.
  • 8GB LPDDR4 @2933MHz
  • 64GB eMMC
  • M.2M key (support NVMe SSD), M.2B key (support SATA SSD)
  • WiFi 6 @2.4Gb/s
  • Bluetooth 5.2
  • Co-Processor: Arduino Leonardo
  • 2x USB 3.2 Gen1
  • USB 3.2 Gen2
  • USB-C
  • USB 2.0 (Pin header)
  • HDMI, Display port via USB-C eDP
  • Dimension: 125mm x 78mm x 16mm
  • Operating System: Windows 10, Windows 11 and Linux

LattePanda 3 Delta is Windows – 10, 11, and Linux OS capable, supporting GUI and micro-service solutions. Detailed guides and documentations on LattePanda products are usually seen on its wiki docs, while GitHub has resources such as 3D files, BIOS files, and drivers. But, I checked and nothing on the LattePanda 3 Delta has been put up yet.

LattePanda has developed customized accessories like UPS, RS232, RS485, enclosures, cameras, and touch screens to offer ease and quick project development. The LattePanda latest is perfect for applications like robotics, smart factory, home automation, and AI localization.

The LattePanda 3 Delta is currently available on Kickstarter for crowdfunding under 7 rewards between $199 and $1129. Its mass production will commence in December 2021, and product delivery will start by March 2022.

Other useful details can also be found on the Kickstarter page.

Introducing the Arduino UNO Mini Limited Edition

Posted on by mixos

The UNO Mini Limited Edition is here to celebrate a pretty epic milestone in Arduino’s history. The iconic board, which first launched back in 2010, has become synonymous with Arduino itself. It’s like the company and the board are inextricably linked in the minds of makers around the world. For many, Arduino is the UNO.

There was a feature in Make: Magazine once, which declared Arduino was here to stay because it had just crossed the 10,000 sales threshold. Back then (and it’s not even that long ago), the idea that you could sell 10,000 maker boards was pretty epic.

The UNO has now sold over 10 million units.

It’s impossible to guess how many projects that equates to. Just like us, many of you will have owned a lot of UNOs over the last decade, and some of those will have been used in multiple projects. Can you still remember your first UNO, or your first UNO project? Share them with us!

So we wanted something super cool to celebrate this new maker board milestone. And that something is the UNO Mini Limited Edition.

UNO Mini Limited Edition Specs

  • Microcontroller: ATmega328P
  • Operating Voltage: 5V
  • Input Voltage: 6-20V
  • Digital I/O Pins: 14
  • PWM I/O Pins: 6
  • Analog Input Pins: 6
  • Flash Memory: 32KB
  • SRAM: 2 KB
  • EEPROM: 1 KB
  • Clock Speed: 16MHz
  • Dimensions: 34.2mm x 26.7mm x 8mm

Meet the UNO Mini Limited Edition

First and foremost, this is an UNO like any other. It’s (almost) the same specs, with the same processor, pinouts and performance that made the UNO so popular. But there are a couple of cool tweaks we think you’ll love.

Probably one of the first things you noticed was that the USB port has been updated to USB-C. An update we’re confident you’ll appreciate, and not just because it helps with the reduced form factor. Most of us have an abundance of spare USB-C cables kicking around these days, so it’s decidedly more convenient.

And then there’s the form factor. The UNO Rev 3 is, more or less, the same size as its predecessors, dating back to the original design. As you expect, the UNO Mini Limited Edition is a quarter of the size of the original footprint, measuring 34.2mm x 26.7mm x 8mm.

The UNO Mini Limited Edition is available for pre-order right now here on the Arduino Store, and will be available from all your favorite electronics suppliers very soon. Some of our partners already have their per-orders live:

source: Arduino Blog

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