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Optically Isolated Analog Input Module for Arduino

Posted on by mixos

This is an isolated analog input module that is useful for interfacing Analog signals of various types originated from analog sensors and field devices. The module is very useful for in-process controls, factory automation, industrial applications, etc. Interfacing an analog voltage, an analog sensor to Arduino or other various microcontrollers with optical isolation is very easy with this module. The circuit requires two power supplies for the input and output sides. The module takes 0 to 5V analog input and provides optically isolated 0-3.3V as output. The circuit can also be interfaced with a 10V sensor, for 0 to 10V input, change the resistor R3 to 1.8K and the output will be the same 0 to 3.3V. The operating power supply input side and output side is 5V DC. Hook up the sensor or analog voltage to the input of this module and connect the output to Analog Pin of Arduino or ADC of any micro-controller. The circuit is based on an optically isolated linear optocoupler. The isolation voltage between input and output is 3750V. IC1 LM358 is used as a closed-loop servomechanism to sense the photodiode current and drive the LED of the optocoupler. IC2 is a linear optocoupler and IC3 LM358 is a signal conditioner for the phototransistor. D1 is the power LED for the input side supply.

Optically Isolated Analog Input Module for Arduino – [Link]

Optically Isolated Analog Input Module for Arduino

This isolated analog input module is useful for interfacing Analog signals of various types originating from analog sensors and field devices. The module is beneficial for in-process controls, factory automation, industrial applications, etc. Interfacing an analog voltage, an analog sensor to Arduino or other various microcontrollers with optical isolation is very easy with this module. The circuit requires two power supplies for the input and output sides. The module takes 0 to 5V analog input and provides optically isolated 0-3.3V as output. The circuit can also be interfaced with a 10V sensor, for 0 to 10V input, change the resistor R3 to 1.8K and the output will be the same 0 to 3.3V. The operating power supply input side and output side is 5V DC. Hook up the sensor or analog voltage to the input of this module and connect the output to the Analog Pin of Arduino or ADC of any microcontroller. The circuit is based on an optically isolated linear optocoupler. The isolation voltage between input and output is 3750V. IC1 LM358 is used as a closed-loop servomechanism to sense the photodiode current and drive the LED of the optocoupler. IC2 is a linear optocoupler and IC3 LM358 is a signal conditioner for the phototransistor. D1 is the power LED for the input side supply.

The LOC110 Single Linear Optocoupler features an infrared LED optically coupled with two photodiodes. One feedback (input) photodiode is used to generate a control signal that provides a servomechanism to the LED drive current, thus compensating for the LED’s nonlinear time and temperature characteristics. The other (output) photodiode provides an output signal that is linear to the servo LED current. The IC features wide bandwidth, high input-to-output isolation, and excellent servo linearity.

Features

  • Operating power supply for the input side and output side is 5V DC
  • Current consumption 10mA
  • Analog Signal Input Range 0 to 5V
  • For Analog Sensor 0 to 10V, Change R3 to 1.8K Ohms
  • Output 0 to 3.3V/ 10mA
  • PCB dimensions: 45.56 x 13.97 mm

Schematic

Parts List

Connections

Gerber View

Photos

Video

LOC110 Datasheet

Ryzen Embedded V2000 with AMD Radeon™ Promises Double Performance

Posted on by Rik

AMD has announced their new Ryzen Embedded V2000 processors with 7nm fabricated Zen 2 cores. They have designed four new processors for embedded devices. Ryzen Embedded V2000 doubles the multi-threaded performance-per-watt and offers up to 30 percent better single-thread CPU performance compared to the previous-gen V1000. Also, the graphics performance is expected to have a 40 percent boost.

The Ryzen Embedded V2000 offers the low-end Hexa-core V2516 and octa-core V2718 processors with 10-25W TDPs. On the high-end, there is a hexacore V2546 and the octa-core V2748 with 35-54W TDPs. The processors are generally dual-threaded. So the octa-core models have 16 threads and the hexacore ones have 12 threads. The top tier V2748 offering a whopping 2.9GHz base and 4.25GHz boost rates while maintaining a 35-54W TDP.

The 6x AMD Radeon™ Graphics cores are clocked at 1.5GHz for V2546 and V2516 and there are 7x cores of V2718 and V2748 that come with 1.6GHz graphics clock speed. The V2000 SocCs can drive up to 4x independent displays at 4KP60 with the help of up to 4x HDMI 2.1 (HDMI 6G) or 4x DP 1.4. They also support V2000 4K encoding.

On the I/O support for these new SoCs that, there are 20x PCIe Gen3 lanes, HDMI 2.1, DP 1.4, and USB 3.1 Gen2. All of these SoCs support up to Dual Channel 3200MHz DDR4, including ECC RAM. Initial launch partners include Advantech (Mini-ITX and COM Express), ASRock Industrial (mini-PCs), and Sapphire (4×4 and 5×5 boards), and an updated Simply NUC mini-PC. Ibase will also power some of its products with V2000 SoCs. The V2000 series has a 0 to 105°C operating range.

Similar to the AMD Ryzen Embedded V1000 and R1000 Series, the V2000 will support AMD Memory Guard, Secure Boot, and Secure Memory Encryption. The stored memory is encrypted to help prevent data breach attacks, as well as helps to decrease cold boot attacks.

No pricing or availability information is published for the Ryzen Embedded V2000 processors yet. More information is on AMD’s announcement and product page.

Broadcom’s single-silicon photo-multiplier is best suited for the detection of low-level pulsed light sources

Posted on by mixos

The Broadcom® AFBR-S4N33C013 is a single-silicon photo-multiplier (SiPM) used for ultra-sensitive precision measurement of single photons.

The active area is 3.0 mm × 3.0 mm. A high packing density of single chips is achieved using through-silicon-via (TSV) technology and a chip-sized package (CSP). Larger areas can be covered by tiling multiple AFBR-S4N33C013 CSPs almost without any edge losses. The protective layer is made by a glass that is highly transparent down to UV wavelengths, resulting in a broad response in the visible light spectrum with high sensitivity towards blue- and near-UV region of the light spectrum.

The AFBR-S4N33C013 SiPM is best suited for the detection of low-level pulsed light sources, especially for the detection of Cherenkov or scintillation light from the most common organic (plastic) and inorganic scintillator materials (for example, LSO, LYSO, BGO, NaI, CsI, BaF, or LaBr). This product is lead-free and compliant with RoHS.

Features
  • High PDE of more than 54% at 420 nm
  • Chip-sized package (CSP)
  • Excellent SPTR and CRT
  • Excellent uniformity of breakdown voltage, 180 mV (3 sigma)
  • Excellent uniformity of gain
  • Size 3.14 mm × 3.14 mm
  • With TSV technology (4-side tileable), with high fill factors
  • Cell pitch: 30 μm2
  • Highly transparent glass protection layer
  • Operating temperature range: -40°C to +85°C
  • RoHS and REACH compliant
Applications
  • X-ray and gamma-ray detection
  • Gamma-ray spectroscopy
  • Safety and security
  • Nuclear medicine
  • Positron emission tomography
  • Life sciences
  • Flow cytometry
  • Fluorescence (luminescence measurements)
  • Time correlated single photon counting
  • High energy physics
  • Astrophysics

more information: https://www.broadcom.com/products/optical-sensors/silicon-photomultiplier-sipm/afbr-s4n33c013

Affordable Plug-and-Play LiDAR Camera: Onion Tau

Posted on by Rik

Onion Corporation, the company best known for its computing and IoT connectivity devices is currently crowdfunding their LiDAR depth camera system named the Onion Tau. Onion Tau Camera is a 3D depth-sensing camera. It is capable of producing 3D depth data rather than color frames.

The company claims it to be a USB-based and plug-and-play 3D camera. It requires no additional computation to provide depth data. Plugging it into a computer with a USB cable is more than enough for it to start sending depth data to the computer via USB-C. The Tau holds the promise to become an affordable solution for the level beyond single-point depth sensing or one-dimensional scanning.

Onion Tau LiDAR Camera Prototype

The LiDAR-style time-of-flight sensor in the camera outputs real-time 160 x 60 resolution depth data. It can also output a greyscale image of the scene. Most importantly, the range for depth sensing is 0.1 m to 7 m at a frame rate of 30fps. For real-time processing, Onion has promised a web-based application for viewing the point cloud along with a Python library and OpenCV-compatible application programming interface — both of which will be open source.

Specifications

  • Depth Technology: LiDAR Time of Flight
  • Depth Stream Output Resolution: 160 x 60
  • Depth Stream Output Frame Rate: 30 fps
  • Minimum Depth Distance: 0.1 meters
  • Maximum Range: 7 meters
  • Depth Field of View (FOV): 70° x 20°
  • Connector: USB-C
  • Tau Camera: 4 mounting holes

Use Cases

  • Primary use case:
  • Use the bundled viewer to see the depth data rendered on your computer
    • Explore 3D depth mapping and it’s possibilities
  • Secondary use case:
  • Use the Python API to build custom made applications
    • Compatible with OpenCV
  • Use cases this enables:
      • Environment mapping (like SLAM)
      • Augmented Reality
  • Computer vision applications:
        • Person counting/presence detection
        • Object detection
        • Robotics
    • Automation

The way LiDAR cameras are getting mainstreamed, it is a very high probability that they will soon take over the “smart” devices universe. Currently, on CrowdSupply, Onion’s Tau Camera is looking forward to achieving that goal.

Lanmodo Vast Pro: Night Vision System with Dashcam

Posted on by Micael Coutinho

So, today we have a real-world issue that you probably deal with too. A lot of people hate driving at night. It is darker, more monotonous, and difficult to see in a distance. Some people totally avoid it, sometimes even missing events they want to be a part of, just because the night drives make them feel unsafe. Now, we have a great example of how technology can be extremely helpful to the world, with the Lanmodo Vast Pro!

What is the Lanmodo Vast Pro? well, it is a night vision system with a dashcam, designed to make you drive safely at night, and in difficult weather conditions, such as in foggy days, heavy rain and snow. Besides that, it also includes a discrete, waterproof rearview camera, meaning parking just became a whole lot easier if your car is not one of the newest that already includes that. This dual-camera system can record up to 30 hours of footage while you are gone from the car, which in companion with a G-sensor, which is used to detect a sudden collision and save its footage so that you have evidence if the other driver runs away without giving you his contact (and let us be real, that would be a miracle).

If you’re interested in exploring more dashcam options or seeking information on them, www.dashcamdiscount.com offers a comprehensive resource. Whether you’re a seasoned driver looking to upgrade your current setup or a newcomer seeking guidance on the best dashcam for your needs, the platform provides valuable insights and reviews to inform your decision-making process. Visit dash cam discounts to discover a wealth of information and reviews on dashcams, and make an informed choice to enhance your driving safety and peace of mind.

The Lanmodo Vast Pro has some interesting features:

  • Dual 1080p cameras with full-color image and view distance up to 300 meters
  • 8-inch screen
  • Up to 30 hours of recording through an 128 GB microSD card slot
  • Driving and parking modes (with 45º front range and 170º rear range)
  • Easy installation that fits in any car

When it comes to the less technical side of things, there are some important details they have taken into consideration: the rearview camera is waterproof, so you can install it outside the car, which gives me mixed feelings because it would be easily stolen and the DIY installation would be harder. Aside from it, they give you two alternatives to power the system: with the OBD or a cigarette lighter, making the process easier and the end result more discrete. Lastly, they include a mat and a suction cup made with nano glue technology, making it more sticky, washable, and durable. So that no more wobbliness that we are accustomed to by the GPS happens. Such a nice touch!

Lastly, the Lanmodo Vast Pro is currently crushing the numbers on its Indiegogo campaign, just showing you how valuable this product actually is! The idea may be adapted into cars of the future, but while that can take a long time to happen (and be incredibly expensive), you can get the whole thing for around $258, as an early bird, which is an insane deal.

Lanmodo Vast Pro Indiegogo link: https://www.indiegogo.com/projects/lanmodo-vast-pro-night-vision-system-with-dashcam#/

Liquid or Air Pressure Switch with Relay

Posted on by mixos

This pressure switch project is built using a piezoresistive transducer, LM358 OPAMP as comparator, and a relay. The circuit activate the relay when the pressure in a system exceed a given set-point. Basically, this switch can power ON or OFF a pump, valve, motor, when certain pressure is reached. A trimmer potentiometer is provided to set the trigger point. LM358 is used as comparator, relay has Normally Open/Normally closed contacts with current rating 5Amps @ 230V AC or 10Amps @ 28V DC. LM78L05 IC is used to provide 5V DC supply to pressure sensor.  The operating voltage of this circuit is 12V and it consumes approx. 40mA current when Relay is in ON condition. We have used MPXV5010DP pressure sensor from NXP. This is an analog pressure sensor and the output of this sensor is 0.2V to 4.7V which is proportional to the applied pressure range of 0-10kPa (0 to 1.75PSI).

Liquid or Air Pressure Switch with Relay – [Link]

PWM Module with Dual Source/Sink Outputs using SG3525

Posted on by mixos

SG3525 PWM module is a great tool for every hobbyist. This circuit can be used in various applications such as switching power supply, DC-DC converter, DC motor speed controller, LED dimer, High voltage power supply, solenoid driver, and electronic DC load.  This low-cost pulse width modulator control circuit offers improved performance. The circuit has various options such as adjustable PWM, adjustable frequency, optional soft start, dual source/sink output with 50% duty cycle, single output with 0 to 100% duty cycle and output signal voltage level TTL-5V or 12V selection using a jumper. The 5V PWM signal is rated at low current hence don’t draw more than 20mA. The 12V outputs are capable to drive a MOSFET directly.

PWM Module with Dual Source/Sink Outputs using SG3525 – [Link]

USRP B205mini-I Software-defined Radio Platform

Posted on by mixos

A wide frequency range (70 MHz to 6 GHz) and a user-programmable transceiver

The USRP B205mini-i is a flexible and compact platform that is ideal for both hobbyist and OEM applications. It is designed by Ettus Research™ and provides a wide frequency range (70 MHz to 6 GHz) and a user-programmable, industrial-grade Xilinx Spartan-6 XC6SLX150 FPGA. USRPs are transceivers, meaning that they can both transmit and receive RF signals.

The RF front end uses the Analog Devices AD9364 RFIC transceiver with 56 MHz of instantaneous bandwidth. The board is bus-powered by a high-speed USB 3.0 connection for streaming data to the host computer. The USRP B205mini-i also includes connectors for GPIO, JTAG, and synchronization with a 10 MHz clock reference or PPS time reference input signal.

The hardware is conveniently accessible through the USRP Hardware Driver (UHD). UHD provides both a C/C++ and Python API and offers cross-platform support for multiple industry-standard development environments and frameworks, including RFNoC, GNU Radio, LabVIEW and Matlab/Simulink. And to ensure you have no restrictions on how you use UHD, it is available on Linux, Windows, and Mac OS. UHD provides the necessary control used to transport user waveform samples to and from USRP hardware as well as control various parameters (e.g. sampling rate, center frequency, gains, etc) of the radio.

RF Capabilities

  • 1 TX, 1 RX
  • 70 MHz to 6 GHz Frequency Range
  • Up to 56 MHz instantaneous bandwidth

Software

  • USRP Hardware Driver 3.9.2 (or later)
  • GNU Radio

Synchronization

  • 10 MHz clock reference
  • PPS time reference

Specifications

HOW CAN I GET STARTED?

There is also a 10-minute video demonstrating how to build an FM receiver with a USRP and GNU radio available here.

USRP B205 Mini is now available in Mouser.

UP Xtreme i11 Edge Compute Enabling Kit: Power the Edge with 11th Generation Intel® Core™

Posted on by mixos

AAEON, a leading manufacturer of AI Edge hardware solutions, announces the latest addition to their UP Bridge the Gap brand, the UP Xtreme i11 Edge Compute Enabling Kit. Powered by the 11th Generation Intel® Core™ processors with Intel® Iris® Xe embedded graphics (formerly Tiger Lake), the UP Xtreme i11 is the latest generation in edge computing solutions designed to power intelligent applications across a range of industries including retail, healthcare, transportation, robotics and industrial automation.

Powered by the latest 11th Generation Intel Core processors, the UP Xtreme i11 Edge Compute Enabling Kit is designed to bring high performance computing to the edge. This latest generation of Intel Core processors bring speeds up to 4.4 GHz with a TDP of only 28 Watts and cTDP of 15 Watts. The processors also unlock a range of Intel tools designed to optimize performance and security, including the Intel® Functional Safety Essential Design Package, vPRO (i5, i7 only), TSN and TCC enabled LAN ports for real-time networking support.

The integration of Intel Iris Xe graphics into the 11th Generation Intel Core Processors brings the most powerful version of Intel’s integrated graphics to date. With up to 96 execution units (EUs), Intel Iris Xe enables workload consolidation in applications like CNC machines, HMI devices, medical imagining and diagnostics, and other applications requiring high resolution HDR output with AI capabilities.

The UP Xtreme i11 Edge Compute Enabling Kit is an innovative package featuring 5G support to deliver the ultimate modern edge solution. With 5G and wireless capabilities, the UP Xtreme i11 enables developers to connect large numbers of IoT devices, and seamlessly share data between edge and cloud. 5G wireless communication allows developers access to speeds up to 20 Gbps with reliable, ultra-low latency data transmission to provide a solid foundation for AI applications to evolve.

The UP Xtreme i11 Edge Compute Enabling Kit is built AI-Ready. Compatible with VPU cards including AAEON’s AI Core XM2280 with Intel® Movidius® Myraid™ X VPU, or the upcoming AI Core KB2280 featuring the 3rd Generation Intel® Movidius® VPU (formerly Keem Bay) which offers up to 10 times the performance for AI inferences than the Intel Movidius Myriad X, but up to 4.7 times more power efficiency. As with all AAEON UP products, the UP Xtreme i11 kit is compatible with the Intel® distribution of OpenVINO™ toolkit, as well as Intel® OneAPI, enabling access to optimization and training tools designed to accelerate development and shorten time-to-market.

The UP Xtreme i11 combines powerful processing with a range of features designed to unlock the full potential of AI Edge computing. The kit features up to 64GB of memory with in-band ECC support to maximize processing speeds. Flexible I/O features include 1 Gbps and 2.5 Gbps LAN ports, four USB 3.2 Gen 2 (10 Gbps) ports and one USB 4 Type C port, and multiple display outputs including HDMI 2.0, DP and DP1.4 (via USB Type C) and eDP. The kit also features two RS-232/422/485 ports and audio line in/out.

The UP Xtreme i11 offers expandability features including M.2 2280 M-Key (with NVMe support), M.2 2230 E-key, M.2 3052 B-Key, and PCIe [x4] slots. The kit also features a 40-pin GP bus allowing greater flexibility in expansion and connecting with peripherals.

The UP Xtreme i11 Edge Compute Enabling Kit will be available for pre-order in the UP Shop starting in Q1 2021. More information about the kit can be found at UP-Board.org. AAEON also offers customization services for the UP Xtreme i11 to provide the best fit for any application. For more information about customization and OEM/ODM services, visit aaeon.com or contact an AAEON representative.

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