Education
Circuit Cellar
Entertainment On Wheels
In-Dash Panels Control Head Units, Multiple Displays, Cameras and Sensors
10+ min |
November 2024
Circuit Cellar
Using Amazon Alexa to Control Custom IoT Gadgets
Integrating Voice Recognition for Smart Home Projects
10+ min |
November 2024
Circuit Cellar
Datasheet: Power Up With DC-DC Converters
Application Types Drive Parameters Beyond Efficiency and Density
3 min |
November 2024
Circuit Cellar
D&D Die Roller with Raspberry PI RP2040
Fantastical Project Built with MCU TFT Display and LVGL Graphics
10+ min |
November 2024
Circuit Cellar
No Blues with Bluetooth!
Part 6: Bluetooth Cybersecurity Basics
10+ min |
November 2024
Circuit Cellar
LoRaWAN Goes the Distance at Low Power
IoT’s Versatile Protocol for Long-Range, Wide-Area Connectivity
10+ min |
November 2024
Circuit Cellar
Catching Lightning in an IMU
Simulating Diffusion-Limited Aggregation with a Raspberry PI RP2040 MCU
10+ min |
November 2024
Circuit Cellar
Build an Interactive Kinetic Wall
Using a Raspberry Pi 4 and Kinect V1 Camera
10 min |
October 2024
Circuit Cellar
Learn to Program MCUs with uLISP
Part 1: Crash Course Offers Insight Into Pioneering Language
10+ min |
October 2024
Circuit Cellar
Intelligent Automotive Battery Sensor
Shunt Resistors and Evaluation Electronics Offer Two Key Components
4 min |
October 2024
Circuit Cellar
Understanding Mesh Circuits How to Use and Calculate Them
Microcontrollers and other digital systems concern mostly ones and zeros but when connections to the real word are needed it can get messy. Stuart writes about mesh analysis and how mesh circuits can be calculated and applied in practical scenarios.
10+ min |
October 2024
Circuit Cellar
Datasheet: Very Cool Micro Machines
Smartphone Cooling Rounds Out Parade of Advanced MEMS
2 min |
October 2024
Circuit Cellar
Improving Patient Outcomes
Device Technology Advances Medical Practices
10+ min |
October 2024
Circuit Cellar
Bringing Cost-Effective, On-Device AI to Home Appliances - Sparse Weights and Interactions Negate GPUs and Cloud Computing
GPU silicon and cloud computing infrastructure are too costly for mass markets devices like refrigerators and washers. By deploying compute resources only to the necessary parts of AI inference, Sparse AI allows product designers to practically incorporate new AI features like natural voice interfaces into their consumer offerings without breaking the bank or electric bill surprises.
5 min |
September 2024
Circuit Cellar
Thin Film Transistor LED Displays - Visual I/O
To add a resistive touchscreen on top of a TFT display, Jeff explores the technology offerings and libraries needed to accomplish his task. Calibrating the touchscreen's computed coordinates with the actual pixel coordinates of the display proved difficult with a modular framework but separating functions allows easy expansion.
9 min |
September 2024
Circuit Cellar
Mobile APP Development with React Native
This month, Bob continues his series on mobile app development from an embedded designer's perspective. He programs a React Native app and he offers guidelines for picking a tutorial for React Native. He further explores how it handles concurrency and asynchronous programming. Bob expected a few nuances during the process but to say there were more than a few would be an understatement.
9 min |
September 2024
Circuit Cellar
Power Analysis Over JTAG Ports: Hidden Debug Dangers - Block Side-Channel Analysis Attacks
Small changes in the phase of clock signals can encode power leakages. An attacker can use standard interfaces such as the JTAG port to drive clocks across targets, using them as measurement techniques for sidechannel analysis attacks despite limited physical access. This article demonstrates how you can test devices for vulnerability and how to modify devices to prevent attacks.
7 min |
September 2024
Circuit Cellar
The Blues Wireless Notecard-LoRa
After having built a number of Wi-Fi IoT gadgets for the home, Brian became curious to see how LoRaWAN-based IoT devices would work. He decided to investigate the Notecard LoRa IoT modules made by Blues Wireless.
10+ min |
September 2024
Circuit Cellar
IoT Protection with MCU Security - Ward Off Attacks with Trust Zones, Encryption, Secure Keys and Tamper Detection
Security breaches jumped 107 percent as malevolent forces increasingly focused on IoT devices for side attacks, IP and data theft. Semiconductor vendors supplying on-chip cryptography, memory protection, unclonable technology, random number generation and other measures hope to shut the door on attackers.
2 min |
September 2024
Circuit Cellar
Fill AI with Computer Vision - On the Leading Edge of Adoption in Industrial IoT
In just about any factory, production lines hum along like a symphonic orchestra. However, makers of artificial intelligence hardware are pushing transformative technology with mind-boggling productivity gains to unlock unrealized potential. Just how fast will AI seamlessly integrate into the means of production?
10+ min |
September 2024
Circuit Cellar
No Blues with Bluetooth! GATT Explained - Part 5 - Understanding Higher Protocol Layers Provides Interoperability Help
After exploring low-level layers of Bluetooth Low Energy in previous editions, and establishing connections in Part 4, Robert examines Attribute Protocol and Generic Attribute Profile or GATT in Part 5. These higher layer protocols provide developers with greater opportunity for interoperability with third-party applications or products.
10+ min |
September 2024
Circuit Cellar
Retro-style Miniature Sports Scoreboard - RGB LED Matrix and Raspberry Pi Provide In-Game Updates
This Cornell University graduate describes how he built a miniature, retrostyle scoreboard that pulls and displays live college and professional sports scores from the ESPN API-bringing the excitement of being at a sporting event to your living room. Pre-game information, in-game scores, and post-game results are displayed on a built-in PiTFT touchscreen.
10 min |
September 2024
Circuit Cellar
Exploring Infrasound - Tornado Early Warning Detection Project Using Raspberry Pi Pico and a Python Supervisory Program
Inspired by the possibility of building an early warning system for tornadoes, Dev developed an infrasound detector. Tornadoes are rare in his area, but his detector found other infrasound activity using sensor circuitry based on a Raspberry Pi Pico, combined with a Python supervisory program that stores data on a computer for analysis.
9 min |
September 2024
Circuit Cellar
Mitigate Timing and Interference Issues on Multicore Processors
Missing multicore timing deadlines in a driver safety or aviation system is potentially catastropic. Adhering to guidance documents, and employing the appropriate testing and analysis methods ensures the efficient and deterministic execution of critical workloads.
5 min |
August 2024
Circuit Cellar
Getting Directions CHC Proceed to Your Destination Without Having to Ask Someone 40 277
Recalibrate your bearings on electronic compasses as Stuart navigates a journey with an MCU-guided compass module leading the way. He tells us how to avoid magnetoresistive effect, and the difference between magnetic north and true north.
9 min |
August 2024
Circuit Cellar
Get More I/O Now! Going Beyond Your MCU's Pin Count
Small microcontroller design projects often require additional I/O. In this article, Joseph presents several methods of expanding digital and analog I/O for these applications.
10+ min |
August 2024
Circuit Cellar
Datasheet: SBCs On the Edge of AI - To reduce latency, single-board computers take inferencing closer to the source
A diversity of missions, size, computing resources and power consumption give designers a range of options for choosing the right board to fit the application.
2 min |
August 2024
Circuit Cellar
Tech Overview: Specialized Drones
Reconnaissance, Surveillance, Making Movies, Heavy Lifting, Package Delivery, Planetary Exploration There's A Mission-Specific UAV For Every Task -
10+ min |
August 2024
Circuit Cellar
No Blues with Bluetooth!
Part 4: Bidirectional communication between peripherals and central devices
10+ min |
August 2024
Circuit Cellar
Review of the Siglent SDS812X HD - 12-bit Digital Storage Oscilloscope
After 10 years of experience with his Siglent SDS1202X Digital Storage Scope, Brian was keen to review Siglent's new 12-Bit High Resolution scope, the SDS812X HD.
10+ min |