Build an Accurate Milliohm Meter

The finished milliohm meter

A milliohm meter is a handy benchtop tool for measuring small electrical resistance values. In this article, Mark Driedger details how to build a microcontroller-based milliohm meter that accurately measures DC resistance from 10 mΩ to 10 kΩ. I built an … Continue reading


ZULU2 Radio Module

RF Solutions ZULU2

RF Solutions recently released its ZULU2 radio module range. Featuring a telemetry module, modem module, and a firmware-free module, the new range’s functionality is on par with its predecessor, with the advantage that no external components are required to provide … Continue reading


CMX7241/CMX7341 PMR Common Platform Processor Expands Support


CML Microcircuits recently expanded the Function Image suite of its CMX7241/CMX7341 PMR Common Platform Processors. Today, all major PMR systems are supported: DMR, dPMR, NXDN, ARIB STD-T102, ARIB STD-T98, and legacy analog PMR—all with automatic digital/analog detection. The CMX7241/CMX7341 PMR Common Platform … Continue reading


New Radar Demonstration Kits


Pasternack recently introduced the its new PEM11000-KIT and PEM11002-KIT radar demonstration kits. Covering the 2.4-GHz industrial, scientific, and medical (ISM) band, the demo kits are excellent resources for studying radar fundamentals (e.g., object detection, motion detection, and object range) and … Continue reading


September Schematic Challenge (Sponsor: Technologic Sysetms)

Click to enlarge. Find the error and submit your answer via the online submission form.

Can you spot the error in this month’s schematic challenge (sponsored by Technologic Systems)? This your chance to put your technical skills to test. Find the error in the schematic for a shot to win prizes, such as a TS-7250-V2 … Continue reading


September Code Challenge (Sponsor: Programming Research)

Click to enlarge. Find the error and submit your answer via the online submission form below. Submission deadline: 2 PM EST, September 20.

Ready to put your programming skills to the test? Take the new Electrical Engineering Challenge (sponsored by Programming Research). Find the error in the code for a shot to win prizes, such as an Amazon Gift Card, a Circuit Cellar magazine … Continue reading


New Audio Line Filter with High Attenuation and Uncompromised Sound Quality

TDK Corp. recently extended its lineup of EMC components for audio lines by launching the MAF1005G noise suppression filter.  The compact (1.0 mm × 0.5 mm × 0.5 mm) filter is well suited for noise suppression in audio lines (e.g., earphones, speakers, and … Continue reading


SEGGER Offers J-Link Support for the BBC micro:bit

Segger BBCMicro

SEGGER recently announced J-Link support for the BBC micro:bit open development board. You can upgrade the firmware on the BBC micro:bit DAPLink to a J-Link OB. This firmware makes the BBC micro:bit’s on-board debug solution compatible with J-Link. Thus, you can … Continue reading


Industrial IoT Reference Design for Fast Development


Intended to address security concerns in Industrial Internet of Things (IIoT) systems, Maxim Integrated Products’s MAXREFDES143# embedded security reference design enables you to protect your designs against counterfeit sensor data. Intended to simplify the development of secure, authenticated sensor-to-web data, the design … Continue reading


Contactless Security Chip Powers First NFC Payment Ring

NFC Payment Ring

NFCRing’s new EMVCo-compliant, wearable payment ring features a Infineon Technologies contactless security chip. Operating like a contactless payment card, the ring enables users to pay for products via an EMVCo contactless-enabled payment terminal. The EMVCo’s member organizations include American Express, Discover, JCB, MasterCard, UnionPay, and … Continue reading


u-blox and Wirepas Partnership Focused on Scalable IoT Solutions

UB059 ublox

u-blox and Wirepas recently announced a partnership to offer an advanced decentralized radio communications solution for industrial Internet of Things (IoT) applications. Comparable with advanced mesh technology, the solution is intended to make large-scale, decentralized industrial IoT networks easy to deploy. … Continue reading


FPGA Board Support Packages Simplify App Dev

BittWare recently announced the availability of Arria 10 FPGA Board Support Packages (BSPs) for Altera’s OpenCL SDK 16.0.2. With BittWare’s OpenCL BSPs, you can start developing applications for Altera’s Arria 10 1150GX FPGA using OpenCL. Using OpenCL, you can code your systems … Continue reading


The Hunt for Power Remote Sensing

Engstrom Headshot

With the advent of the Internet of Things (IoT), the need for ultra-low power passive remote sensing is on the rise for battery-powered technologies. Always-on motion-sensing technologies are a great option to turn to. Digital cameras have come light years … Continue reading


Embedded Security Innovation

Oflynn Interview

Colin O’Flynn is a Halifax, Canada-based engineer (and Circuit Cellar columnist) who recently launched a company to commercial some of the research he’s done as a PhD student working on embedded hardware security. His Chipwhisperer Lite is a board that … Continue reading


High-Voltage, Dual-Output Step-Down Charge Pump

Linear LT3256

Linear Technology’s new LTC3256 is a high-voltage, low-noise, dual-output power supply that  takes a single positive input and generates 5- and 3.3-V step-down supplies with high efficiency and no inductors. Featuring a 5.5-to-38-V input voltage range, the LTC3256 includes independently enabled … Continue reading