Command Interface RPLIDAR-A1 is 360-degree laser range scanner that uses a laser triangulation ranging principle to calculate distance. In this article, Jeff examines this device and its development package. He steps you through his project using RPLIDAR, detailing his creation...

SARNet Aids Search and Rescue Because every minute counts during search and rescue operations, technologies that narrow the search area are always welcome. Learn how these three Camosun College students built a LoRa-based tracking system designed to aid search-and-rescue teams...

Facedancer Fun A new open-source hardware tool has been released, called the GreatFET. It can be used for a variety of purposes, including performing all sorts of low-level work on the USB protocol. Beyond just raw USB, it also works...

Built Using PIC16 MCU The year 2019 marked the 150th anniversary of the periodic table. As a tribute, Dev built a desktop accessory that helps students learn the chemical symbols and the order of the chemical elements in the periodic...

Pitching a Glitch Many products use USB, but have you ever considered there may be a critical security vulnerability lurking in your USB stack? In this article, Colin walks you through an example product that could be broken using electromagnetic...

The Hardware In his November article, Nishant Mittal discussed ways of various ways of testing a board. In this two-part series, Nishant expands on that topic, this time discussing the design of an FPGA-based system controller built for testing and...

High-Power MOSFETs George continues his article series looking at all aspects of the basic structures that make semiconductors work. In Part 6—his final article of the series—he builds on last month’s exploration of MOSFETs by this time examining MOSFETs designed...

Programming and Pixels Creating a smart LED design is both challenging and fun. In this article, Jeff first looks at the history and technology of LEDs, and then shares the details of his smart LED project based on RGB LEDs....

Amplifiers in Action A high-voltage differential probe is a critical piece of test equipment for looking at high-voltage signals. In his article, Andrew describes his design of a high-voltage differential probe with features similar to commercial devices, but at a...

More on FETs George continues his article series delving into the fundamentals of semiconductors. In Part 5, he expands his discussion of field effect transistors or FETs. He examines different types of JFETs and MOSFETs, looking at aspects including gate...

Using a PIC32 MCU Small quadcopter-style drones represent one of the most exciting areas of embedded system design in recent years. Learn how these three Cornell students designed, constructed and tested an autonomous quadcopter that uses a Microchip PIC32 MCU...

Dear Circuit Cellar readers, As the COVID-19 pandemic continues to escalate impacting our communities on every level, we’re committed to doing our part. Our editorial and administrative staff all work remotely and will continue to fulfill their roles in putting...

AUVSI XPONENTIAL 2020 is the global stage for everything unmanned—from state-of-the-art propulsion technology, sensors, energy storage and UAS mitigation solutions to what’s coming over the horizon in AI, 5G, edge computing and more. Enter to win a full conference pass...

Motorola Flash Innovation 2003 – Design Contest Grand Prize Richard DreherU.S Abstract: Have you ever wondered what the birds, deer, or bears were doing in your backyard when you weren’t around? With the Remote Observation Station, you can watch wildlife...

Motorola Flash Innovation 2003 – Design Contest Grand Prize Richard DreherU.S Abstract: Have you ever wondered what the birds, deer, or bears were doing in your backyard when you weren’t around? With the Remote Observation Station, you can watch wildlife...

Motorola Flash Innovation 2003 – Design Contest Distinctive Merit Hock Wei SoonSingapore Abstract: The proximity sensor, which was built using ultrasonic technology and the 68HC908QT, helps the visually handicapped detect obstacles. The small sensor requires a 9-V battery. It can...

Motorola Flash Innovation 2003 – Design Contest Distinctive Merit Robert SchmidingerU.S.A. Abstract: The standard mechanical thermostats used in most RV refrigerators aren’t reliable. You have to set the thermostat to an arbitrary temperature and hope the food won’t go bad....

Motorola Flash Innovation 2003 – Design Contest Distinctive Merit Seenath  Punnakkal  & Sameer CholayilU.S.A. Abstract: The Tlogger is a temperature logger with interface to a Handspring Visor PDA. It uses a four-channel DAQ platform based on an MC68HC908QT4. Supporting Files

Motorola Flash Innovation 2003 – Design Contest Distinctive Merit Seenath  Punnakkal  & Sameer CholayilU.S.A. Abstract: The Micro Mini DAQ is a low-cost, low-power, multichannel data acquisition, storage, retrieval, and analysis device with an RS-232 interface. The system can be used for monitoring temperature,...

Motorola Flash Innovation 2003 – Design Contest Distinctive Merit Seenath  Punnakkal  & Sameer CholayilU.S.A. Abstract: The Touchscreen Controller converts user touch inputs to RS-232 data and sends it to your system. Thus, you can reduce development time as well as system and...

Motorola Flash Innovation 2003 – Design Contest Distinctive Excellence Indranil MajumdarIndia Abstract: The stand-alone Automobile Cruise Control is a microwave radar-guided, 68HC908QT4-based cruise control system for all types of vehicles. Using the Doppler effect, the system detects stationary and moving...

Motorola Flash Innovation 2003 – Design Contest Distinctive Excellence Ganesh Raaja MaharajanIndia Abstract: The Blood Pressure Monitor measures the oscillations in pressure in the cuff. A sensor translates the pressure to capacitance, which is then measured by a 68HC908QT4-based circuit....

Motorola Flash Innovation 2003 – Design Contest Distinctive Excellence Sunil JhaIndia Abstract: For use in offices, the iBPIS stores personnel information on the Maxim iButton; the data then can be displayed on a PC or hand-held device through an IR...

Motorola Flash Innovation 2003 – Design Contest Distinctive Excellence Kamal GendiAustralia Abstract: The Mini Node is a creative solution to the horizontal switch plates now popular in Australia. To continue using an HCS II and X10 system for home control,...