Page 249 – Electronics-Lab.com

Toshiba announces new photovoltaic-output photocoupler

Posted on 7 July, 2021 by mixos

Toshiba Electronics Europe GmbH (“Toshiba”) has launched a new photovoltaic-output photocoupler (“photovoltaic coupler”) housed in a thin SO6L package measuring just 3.84mm × 10mm × 2.1mm, suitable for driving the gates of high-voltage power MOSFETs used to develop a galvanically-isolated solid-state relay (SSR) function.

SSRs are semiconductor relay devices that incorporate a photo-TRIAC, a photo-transistor or a photo-thyristor as the output device. They are generally suitable for applications that require ON/OFF control of large electrical currents such as industrial equipment (I/O relay output for PLCs, inrush current protection in PSUs, battery voltage monitoring in BMS, ground fault detection and more) as well as switching the power and signal lines in instrumentation applications.

A photovoltaic coupler, such as the new TLP3910, is a photorelay that contains the optical elements but not the MOSFET that performs the high-current switching functions. To easily configure an isolated SSR to handle high-voltage, large-current switching (which photorelays find challenging), designers generally combine a photovoltaic coupler with a MOSFET.

Driving a high-voltage power MOSFET with a gate voltage of 10V or higher, currently requires connecting two of Toshiba’s TLP3906 in series, due to the low open voltage that is around 7V. However, the new TLP3910 has a minimum open voltage (VOC) of 14V, double that of the TLP3906 and, as a result, only a single device is required to drive the gate of a high-voltage power MOSFET. This reduces the part count, thereby improving reliability and saving PCB space and BOM cost.

Improvement to the built-in discharge circuit within the TLP3910 has realized a typical turn-off time (toff) of 0.1ms, about one-third that of the TLP3906 and about one-thirtieth that of the TLP191B. The associated typical turn-on time (ton) is 0.3ms and, together, these ensure high speed operation in end applications.

The TLP3910 is Toshiba’s first photovoltaic coupler to feature a minimum isolation voltage (BVS) of 5000Vrms while maintaining the excellent performance of the current products (TLP191B and TLP3906). This, along with the creepage distance of 8mm and relevant UL/cUL approvals, allows use in industrial equipment driven by 400VAC systems and other applications where electrical safety is paramount.

The high-temperature operation (Topr) range of -40 to +125°C ensures that the TLP3910 is suited to a wide range of rugged applications.

more information: Toshiba

Allegro’s new GMR gear tooth speed sensor

Posted on 7 July, 20217 July, 2021 by mixos

Industry-leading air gap enables increased reliability, efficiency, and design flexibility

Allegro MicroSystems, Inc. (“Allegro”), a global leader in sensing and power solutions for motion control and energy-efficient systems, has introduced a new, state-of-the-art giant magnetoresistance (GMR) speed sensor that measures the rotation of ferromagnetic gears. The ATS19480 speed sensor IC provides a single-channel solution that’s ideal for hybrid and pure electric vehicle transmissions, with use cases extending to two-wheelers, off-road vehicles, and industrial application designs requiring speed-only information.

Combining advanced GMR technology with leading automotive grade algorithms and packaging technology, Allegro now offers a cutting-edge, comprehensive transmission sensor portfolio that addresses the needs of today’s system developers and manufacturers, while taking advantage of the company’s 20 years of speed sensing expertise, application-specific experience, and technological advancement.

The device adds a speed-only protocol to the company’s recently released ATS19580 transmission speed and direction sensor IC, seting a new standard for speed sensing and allowing developers to achieve the highest levels of in-system capability and adaptability. With an industry-leading air gap that’s 50% larger than existing options, it improves design-in flexibility, expands design margin and tolerance capability, and facilitates a wider range of sensor installation locations. This helps reduce system complexity, size, weight, cost, and energy consumption – boosting efficiency and minimising carbon footprints.

“As our newest single-chip GMR solution for gear tooth sensing, the ATS19480 optimises performance for emerging electric vehicle applications. It’s unique to the market, and outperforms competing technologies because of the high air gap and level of accuracy,” says Peter Wells, Magnetic Speed Business Unit Director at Allegro. “Our new speed sensor allows designers to do things that haven’t been possible until now. It can be placed virtually anywhere; transmissions can be smaller and lighter than ever before, which is especially important in applications where designers want the speed-only protocol. It’s a real game changer.”

The ATS19480 sensor follows Allegro’s recent release of the dual-channel ATS19580 IC, the industry’s first fully-integrated GMR speed and direction sensor to offer superior vibration immunity in applications such as automotive transmissions. Both sensors complement Allegro’s ATS19420 and ATS19520 fully-integrated Hall-effect speed sensors, as well as the company’s family of front-biased Hall-effect and GMR products for magnetic target sensing.

High Integration and Superior Algorithms Drive Performance

Monolithic integration makes it possible for the ATS19480 sensor to achieve exceptional in-system performance and highly accurate speed detection. The fully integrated, single overmold package lessens design complexity and simplifies the development process.

Enabling flexible design-in and system compensation, the three-pin single inline package (SIP) houses the IC, magnet, and EMC protection. The precision assembly optimises IC-to-magnet positioning, as reduced tolerance stack between the IC and magnet increases sensor accuracy and leaves ample margin for in-application installation tolerance.

Advanced signal compensation eliminates flatline conditions caused by system dynamics, and differential sensing protects against common-mode stray fields. The ATS19480 includes integrated ASIL B diagnostics and certified safety design process for optional fault reporting, and superior operation under harsh operating conditions can help to reduce failure rates – along with customer returns and warranty service claims.

more information: Allegro MicroSystems

Meet the Pimoroni Tiny2040

Posted on 7 July, 20217 July, 2021 by Emmanuel Odunlade

Pimoroni last week launched the Tiny 2040, a new addition to its awesome, ever-growing list of microcontroller boards and accessories goodies for makers.

Yea, I know, another development board based on everyone’s current favorite microcontroller, the RP2040. Since the great guys at the Raspberry Pi foundation announced the release of the RP2040 microcontroller earlier in the year, we’ve seen the MCU adopted wildly by the community with boards, kits, etc. based on the MCU, being released by several manufacturers including community favorites like Arduino.

While most of these boards bring the powers of the RP2040 MCU to the user, they also come in a form factor that may not be ideal for projects that are pressed for space. This is why the Tiny2040, was designed, to give tiny projects a chance to experience the awesomeness of the RP2040 without custom-made boards.

Packed into a 22.9 x 18.2 x 6mm postage-stamp-sized form factor, the tiny2040 unlike most other boards exposes all the 4 available ADCs on the RP2040. It also comes with a debug port, an RGB LED, and the boot button doubling as a button that can be used for user input, and a USB-C interface so you don’t have to get an additional USB cable.

As you’d expect, sacrifices have to be made to enjoy the small form factor. This includes losing half of the I/O pins available on most other boards like the Raspberry Pi Pico, this loss also includes an SPI interface among others. Recording this under losses because it was a personal disappointment for me; despite the fact that the board comes with castellated pins set up, all your plans to use it as an SMD unit is a no-no, as the board has components on both sides which makes reflow operations impossible.

Asides from this personal issue the Tiny2040, is quite the board and some of it’s key features are highlighted below;

Powered by RP2040
ARM Cortex M0+ running at up to 133Mhz
264kB of SRAM
USB-C connector for power, programming, and data transfer
8MB of QSPI flash supporting XiP
User controllable RGB LED
Twelve IO pins (including four 12-bit ADC channels)
Switch for basic input (doubles up as DFU select on boot)
Onboard 3V3 regulator (max regulator current output 300mA)
Input voltage range 3V – 5.5V
Dimensions: approx 22.9 x 18.2 x 6mm (L x W x H, including the USB-C port)

Like most RP2040 based boards, the Tiny2040 can be programmed via any of C++, MicroPython, or CircuitPython, and with the full 8 Megs of storage available for use, it’s safe to say the tiny2040 is small but mighty.

The Tiny2040 is available for sale on Pimoroni’s website for £8.40. Agreed, a slightly heftier fee than what most of the other RP2040 based boards costs, but considering the number of processing capabilities and features packed into that tiny board, it’s probably a not-so-bad fee.

More information on the Tiny2040 and purchasing instructions is available on Pimoroni’s website. For folks based in the US, you can also buy the board from Digikey.

New Energy Harvesting System will Power Wearables using Heat Generated by Your Skin

Posted on 7 July, 2021 by Emmanuel Odunlade

While several advancements in battery technology, thanks to increased research in the field, have driven up the potential and range of applications for wearables, there are some application areas of wearables that are still being hindered by power, with issues ranging from the size of batteries, to cost, and other issues around battery life and charging. Several efforts are ongoing to power wearables from energy harvested from several human activities from walking (using Piezos and motion-based systems) to talking(converting sound energy), the latest, however, seeks to power wearables using a by-product of the human body system, body heat.

A product of work done by researchers in China, the device, leverages the ability of thermoelectric generators (TEGs) to produce electricity using heat gradients. Unlike most modes of electricity generation, TEGs do not require ingredients like working fluids, and moving parts, neither does it require the movement, positioning, etc., required by other forms of energy harvesting solutions. It is passive in its operations and this makes it great for applications that require a quiet, reliable, and portable power source.

For the researchers, while the potentials of TEGs was clear, a major challenge they had was making TEGs in a way that makes them useful for wearables, as traditional TEGs are rigid and rigidity doesn’t exactly fit most of the wearable applications that the device could potentially support. While flexible TEGs exist, they tradeoff different features like coverage area, and energy generation capacity for flexibility.

To solve this, the team designed and fabricate a reliable and high-performance flexible TEG that was made from p-type Sb₂Te₃-based, and n-type Mg₃Bi₂-based materials with porous polyurethane (PU) matrix and flexible printed circuit board (FPCB) electrodes. The obtained flexible TEGs after development demonstrated a peak power density of 20.6 μW/cm² on a human arm at an ambient temperature of 289 K (air velocity, 1.1 m/s) and a peak power density of 13.8 mW/cm² at a temperature difference of 50 K. Showing a good balance between performance and flexibility, the system withstood 10,000 bending cycles at a bend radius of 13.4 mm with no major drop in output performance.

To test their assumptions, the team built a prototype, a TEG band measuring 4.5 in long and 1.1 in wide. The band was wrapped around the wrist of someone whose body temperature measured at 92.9 F in ambient environmental conditions, using the temperature difference between the body and the environment, the band successfully lit up an LED load.

These results show great promise, as it means one could combine the FTEG with power management using highly integrated DC-DC converters like Analog Devices LTC3108, to create an integrated self-powered electronic device, like a pulse oximeter (which actually uses LEDs), drawing power from the temperature of the same hand on which it is being used.

With essential components of most wearable devices typically consuming just between 100 nW to 10 mW of power, it is safe to say that in the nearest future, we could see the FTEGs replacing batteries entirely in certain wearable applications.

For more information on the FTEGs and details about the research, you can check out the research submission on Cell Reports

uLab Kiwi and Kiwi Lite Provides Entryway to Learning FPGA and ESP32-S2-WROVER MCU

Posted on 7 July, 20218 July, 2021 by Saumitra Jagdale

FPGA development can be difficult to learn, but projects like Kiwi aims at lowering the barriers for beginners. µLab Kiwi and Kiwi Lite are excellent solutions for students, hobbyists, makers, and professionals for learning and developing FPGAs. Despite its compact form factor, Kiwi packs enough functionality and features needed to create complex projects.

Kiwi is a powerful and easy-to-use development platform that combines an FPGA with an ESP32-S2 WROVER (ESP32) microcontroller. The µLab Kiwi and Kiwi Lite are suitable for a wide range of applications, from making an LED blink to creating a WiFi-enabled logic analyzer, a VGA driver, a CPU, etc. Discussing further, both boards are built around the Intel Altera MAX10 FPGA featuring TSMC’s 55 nm technology with 8K Logic Elements(LE) and 378Kb of maximum embedded memory.

The highlight of Kiwi is the Espressif ESP32-S2-WROVER. It is a powerful, single-core Wi-Fi MCU module with high performance and a rich set of peripherals. Generally, this module is an ideal choice for a wide variety of application scenarios relating to the Internet of Things (IoT), wearable electronics, and smart homes.

Now you can program parts of your project using the Arduino IDE (on the ESP32) and the others using the FPGA, thanks to the ESP32. This feature is not available on other FPGA development boards as you are confined to program your entire project on the FPGA.

Kiwi is designed with features that make it a great board for everyone

Based on the programmable Intel Altera MAX10 FPGA, easily adjusts to a wide range of use cases.
The board features ESP32-S2-WROVER (ESP32) which is programmable through Arduino IDE.
Onboard USB Blaster (JTAG programmer) to program the FPGA.
CP2104 USB-UART Bridge is included to serially program the ESP32.
USB Type-C port to provide power to the board.
It includes 8x LED lights, 4x Slide Switches, 3x 7 Segment Displays, and 2x pushbuttons.
50MHz oscillator as well as two 40-pin GPIO headers, one for the FPGA and one for the ESP32

“It provides the unique ability to develop your projects with the familiar ESP32. Then move on to the FPGA for the more complicated tasks. For example, creating a logic analyzer on an FPGA alone can be quite hard. The ESP32 makes it much easier to process the data and display it.”

Talking about the µLab Kiwi Lite. It is identical to the Kiwi but lacks the ESP32 and other onboard peripherals such as—slide switches, seven-segment displays, and the second 40-pin GPIO header. However, it compensates for this drawback by incorporating three 12-pin PMOD connectors in its design.

Software Support for uLab Kiwi

Learning FPGA development may no longer be the same, because of detailed tutorials and open source code for anyone to use, along with the Kiwi boards. Additionally, the µLab Project Generator software automatically defines each GPIO pin. It also defines any other onboard peripherals, creates project files, and provides a sample Verilog file. Hence, making the programming fast and simple.

For more information on the µLab Kiwi and Kiwi Lite visit the Crowd Supply project website. You can also sign up to be notified when the campaign launches.

The OMNI-2155-CML: Tapping into Next Generation Performance

Posted on 7 July, 2021 by mixos

AAEON, a leader in industrial PC solutions, announces their latest industrial touch panel PC, the OMNI-2155-CML. Powered by 10th Generation Intel® Core™ processors (formerly Comet Lake), this innovative solution is able to deliver higher performance, broader I/O features and technological support than previous generations at a lower price point.

The OMNI-2155-CML is the first in the OMNI family of industrial touch panel PC solutions to offer a socket-type processor, allowing for easier maintenance and scalability to meet the performance needs of individual applications. The system utilizes the 10th generation Intel Core i3/i5/i7/i9 and Intel® Celeron® processors (up to 35W TDP) combined with up to 64GB of DDR4 memory to deliver greater performance and higher processing speeds than previous generations. These late-generation processors also provide support for a range of vital technologies, fully unlocked with the OMNI-2155-CML.

One of the ways users and developers can take advantage of the capabilities of the 10th generation Intel Core processors in the OMNI-2155-CML is through the system’s broad expansion support. The system features an M.2 2280 (M-Key) slot driven by PCIe 3.0 [x4] with support for fast NVMe SSDs. It also delivers M.2 2230 (E-Key) to support a range of functions including Wi-Fi or Bluetooth connectivity. The OMNI-2155-CML is also built with a full-sized Mini Card slot that supports PCIe and mSATA, set via the BIOS.

The OMNI-2155-CML is built from the ground up for industrial applications. The 15.6” LCD touch screen utilizes the P-CAP system and can be configured to be operable with gloves. It also features a wide voltage input (10 to 35V) and provides consistent operation without loss of performance in temperatures from 0°C up to 45°C.

The OMNI-2155-CML offers a broader range of I/O features compared to previous generations, offering greater flexibility to connect to more devices and controllers. The OMNI-2155-CML offers four serial COM ports, four USB3.2 Gen 2 ports, and two Gigabit Ethernet ports, providing support for Intel® vPro and Intel® AMT, enabling remote monitoring and control. The OMNI-2155-CML also delivers storage flexibility with NVMe support, mSATA, and 2.5” SATA III (6.0 Gbps) storage devices. The OMNI-2155-CML can also easily connect with cellular networks thanks to onboard SIM card slot, allowing for even more flexibility to communicate with wide area networks.

“The OMNI-2155-CML is our latest industrial panel PC delivering the 10th generation Intel Core processors, bringing high end performance to the market,” said Ethan Chiu, Product Manager with AAEON’s System Platform Division. “Thanks to the socket-type design, we are able to provide our customers with easier maintenance, upgradability, and greater performance than previous generations at a lower cost.”

AAEON offers manufacturer and OEM/ODM services to help deliver a solution for any application. From industry-leading service and support to customization and more, helping reduce deployment costs and time to market.

Vecow Launches VAC-1000 Arm-based Edge AI Computing System

Posted on 7 July, 2021 by mixos

Featuring Foxconn Cortex-A53 MPU, running Hailo-8™/Lightspeeur® AI accelerator, with support for mainstream deep learning framework, Vecow VAC-1000 Edge AI Computing System provides greater flexibility in device architecture, making it an ideal solution for Public Surveillance, Factory Automation, Traffic Vision, and any AIoT/Industry 4.0 applications.

Vecow Co., Ltd., a team of global embedded experts, announced the latest Arm-based family of Edge AI Computing System VAC-1000. Powered by 24-core Foxconn Cortex-A53 MPU, running Hailo-8™ AI accelerator at 26 TOPS, and Lightspeeur® 2801S Neural accelerator at 5.6 TOPS, VAC-1000 series delivers improved efficiency and integration for broad adoption of the latest IoT Edge computing solutions. With up to 16GB DDR4 2133 memory and optional NX Witness VMS (Video Management System) supported, VAC-1000 provides a server-grade computing capability that is ideally suited for the customer requirements in intelligent surveillance applications including Public Surveillance, Traffic Vision, Factory Automation and any AIoT/Industry 4.0 applications.

Vecow VAC-1000 Series is an Arm-based computing system that is built on 24-core Cortex-A53 processor, with 64-Bit MPU capabilities up to 1GHz. Featuring simplified I/O interfaces including 1 GigE LAN, 1 IPMI, 2 USB 3.0, 1 Micro USB and equipped with 1 SATA and 1 M.2 form factor storage, Vecow VAC-1000 is a compact design yet provides mighty configurations.

“We are excited to announce this new family of Arm-based Edge AI Computing System to our partners,” said Joseph Huang, Sales Manager, Sales & Marketing Division at Vecow. “Vecow VAC-1000 is based on Cortex-A53 processor and integrated with AI accelerator for inferring. Artificial intelligence is getting more and more popular in these 2 years and we can see many AI applications deployed in vertical markets for better and smart living for the human beings. For the intelligent surveillance and vision fields, we are pleased that VAC-1000 can bring a brand new hardware and software architecture, dedicated and easy-to-use functionality for our customers and partners”.

Featuring balanced performance and efficiency, equipped with Hailo-8™/ Lightspeeur® AI accelerators and supporting 9V to 55V DC-in, Vecow VAC-1000 is a comprehensive solution optimized for Public Surveillance, Traffic Vision, Factory Automation, and any AIoT/Industry 4.0 applications.

VAC-1000 – Foxconn FXN3102 Cortex-A53 processor Arm-base Edge AI Computing System, 2 GigE LAN, 2 USB , 1 M.2 1 SSD, Lightspeeur AI Accelerator, DC 9V to 55V, Rugged

VAC-1100 – Foxconn FXN3102 Cortex-A53 processor Arm-base Edge AI Computing System, 2 GigE LAN, 2 USB , 1 M.2 1 SSD, Hailo AI Accelerator, DC 9V to 55V, Rugged

To learn more about Vecow Arm-based Edge AI Computing System, please visit the VAC-1000 product page or www.vecow.com for more details.

Humidity Meter Using OLED Display – Arduino Compatible

This is an easy to build, very compact, and low profile Arduino compatible platform to build a humidity meter/Gauge using a 0.96Inch OLED display. The project consists of Atmega328 microcontroller, 0.96Inch OLED display, 3.3V regulator, and HIH5030 analog humidity sensor from Honeywell. The HIH5030 sensor provides an analog voltage output, the analog voltage is near linear voltage output vs %RH, the sensor output is connected to A0 (Arduino-ADC pin 0) of the ATmega328 microcontroller. The sensor output is 0.25V to 2.5V vs 0 to 100% RH. Connector CN2 is provided for boot-loader flashing and Arduino programming. Use Pin 4 GND and Pin5 VCC to power the project.

HIH5030 Humidity Sensor

The HIH5030 Low Voltage Humidity Sensors operate down to 2.7 Vdc, often ideal in battery-powered systems where the supply is a nominal 3 Vdc. The HIH5030 complements the existing line of 5 Vdc SMD (Surface Mount Device) humidity sensors. The HIH-5030 Humidity Sensors are designed specifically for high volume OEM (Original Equipment Manufacturer) users. Direct input to a controller or other device is made possible by this sensor near linear voltage output. With a typical current draw of only 200uA, the HIH-5030 is ideally suited for many low drains, battery-operated systems. Tight sensor interchangeability reduces or eliminates OEM production calibration costs.

Arduino Code

This is Arduino compatible project, a new Atmega328 microcontroller requires flashing the boot-loader and then program the Arduino code. Follow the link below to learn the programming process. Example code is provided as a download to test the project, this code is not accurate required proper calibration and mapping.

From Arduino to a Microcontroller on a Breadboard: https://www.arduino.cc/en/Tutorial/BuiltInExamples/ArduinoToBreadboard

Voltage vs Humidity Diagram

Applications

Industrial Air compressors
Battery-powered systems
Drying equipment HVAC (includes air conditioning, air movement, thermostats, humidifiers, de-humidifiers, humidistats, enthalpy sensing)
Office automation equipment
Process equipment Refrigeration (includes bulk and transport systems)
Telecommunications cabinets
Weather stations and meteorology equipment
Medical Hospital air compressors
Infant incubators
Microenvironments
Sleep apnea equipment
Treadmill stress monitoring equipment

Features

Supply 5V DC @ 10mA
0.96″ OLED display
Low power humidity sensor
Onboard voltage regulator
Programming header
PCB dimensions: 28.42 x 27.31 mm

Schematic

Parts List

NO.	QNTY.	REF.	DESC.	MANUFACTURER	SUPPLIER	SUPPLIER PART NO
1	1	CN1	4 PIN MALE HEADER PITCH 2.54MM	WURTH	DIGIKEY	732-5317-ND
2	1	CN2	8 PIN MALE HEADER PITCH 2.54MM	WURTH	DIGIKEY	732-5321-ND
3	1	C1	10uF/16V SMD SIZE 0805	MURATA/YAGEO	DIGIKEY
4	3	C2,C3,C7	0.1uF/50V SMD SIZE 0805	MURATA/YAGEO	DIGIKEY
5	3	C4,C5,C6	SMD SIZE 0805	MURATA/YAGEO	DIGIKEY
6	1	R1	10K 5% SMD SIZE 0805	MURATA/YAGEO	DIGIKEY
7	1	R2	100E 5% SMD SIZE 0805	MURATA/YAGEO	DIGIKEY
8	1	R3	1M 5% SMD SIZE 0805	MURATA/YAGEO	DIGIKEY
9	1	U1	ATMEGA328TQPF-32	MICROCHIP	DIGIKEY	ATMEGA328PB-AURCT-ND
10	1	U2	HIH-5030-001	HONEYWELL	DIGIKEY	480-3294-1-ND
11	1	U3	LM1117-3.3V	ON SEMI	DIGIKEY	488-LM1117MPX-33NOPBCT-ND
12	1	X1	16Mhz	ECS INC	DIGIKEY	X1103-ND

Gerber View

Photos

Video

HIH-5030 Datasheet

STMicroelectronics STISO621 dual channel digital isolator

Posted on 5 July, 2021 by mixos

The STISO621 are dual-channel digital isolators based on the ST thick oxide galvanic isolation technology

The STISO621 are dual-channel digital isolators based on the ST thick oxide galvanic isolation technology. The devices provide two independent channels in opposite direction with Schmitt trigger input, providing robustness to noise and high speed input/output switching time.

Key features

6 kV galvanic isolation
High data rate up to 100 Mbps
Wide Ta range operation: from -40 ºC to 125 ºC
High common-mode transient: > 50 kV/µs

Additional features

Dual-channel, digital isolator with 1 – 1 channel directionality
High data rate up to 100 Mbps
Wide Ta range operation: -40 ºC to 125 ºC
High common-mode transient: >50k V/µs
From 3 V to 5.5 V supply levels
3.3 V and 5 V level translation
Low power consumption
Pulse width distortions < 3 ns
6 kV galvanic isolation
SO8 narrow and wide package options

more information: https://www.st.com/content/st_com/en/products/interfaces-and-transceivers/isolated-interfaces/stiso621.html#overview

DFRobot SEN0370 Non-contact Liquid Level Sensor

Posted on 5 July, 2021 by mixos

DFRobot SEN0370 Non-contact Liquid Level Sensor is specially designed to detect the liquid level of all sorts of non-metal small diameter pipes (outer diameter D≤10mm). This sensor features a status indicator and adjustable sensitivity. The status feedback of the sensor can be given in real-time. The non-contact liquid level sensor comes with a 4-pin adaptor that can directly collect the digital signal. Also, this adapter makes it convenient for connecting with Arduino or other main controllers. This liquid level sensor can be widely used in the liquid detection of water dispensers, small pipes, and perfusion tubes.

Features

Specially designed to detect the liquid level of all sorts of non-metal small diameter pipes
High stability and sensitivity
Adjustable sensitivity
Status indicator feedback of the sensor can be given in real-time

Specifications

5V to 24V power supply
switch quantity output
500ms response time
-5°C to 105°C operating temperature range
≤10mm suitable pipe diameter
±1.5mm liquid level error
ABS material
IP6 waterproof performance

more information: https://wiki.dfrobot.com/Small_Pipe_Diameter_Level_Sensor_SKU_SEN0370