Circuit Digest

Using Over 130 3D-Printed Parts, This Six-Digit Calculator Lets Gears and a Hand Crank Handle the Logic

A maker has built a calculator out of some 3D-Printed parts that can perform up to six-digit addition, subtraction, ...
Circuit Digest

ESP32-S3 Runs a 1998 PlayStation Game With Game Files Loaded From a MicroSD Card on Demand

David Montero Crespo, creator of Velxio.dev has managed to run the classic 1998 PlayStation game Metal Gear Solid on the tiny ...
Circuit Digest

ESP32-S3-Based Compass Uses a 3-Axis Magnetometer for Real-Time heading and Direction Readouts

LazyDays Creation built a compact, portable digital compass based on an ESP32-S3 Super Mini and a three-axis magnetometer. He ...
Circuit Digest

Renesas Introduces Smallest Configurable GreenPAK IC with Multi-Time Programmability in Ultra-Compact WLCSP and STQFN Packages

"The SLG46801 expands our GreenPAK portfolio with an ultra-compact WLCSP option and flexible in-system configurability, ...
Circuit Digest

This STM32 Turns 3,000 Mechanical Pixels Into a Real-Time Fluid Simulator With Joystick-Controlled Gravity

Maker Mitxela (Mitchell Bunn) has turned nearly 3,000 old electromechanical flip dots into an unusual real-time fluid ...
Circuit Digest

Maker Builds an Offline Wikipedia Using an ESP32 Board and Its Built-In microSD Card Slot to Store Data

Alun Morris’s Offline-Wikipedia using ESP32 is an open-source project that turns the inexpensive ESP32-2432S028, commonly ...
Circuit Digest

This ESP32-P4 Turns a DJ Controller Into a Laptop-Free DJ System With Two Music Decks and Audio Mixing

The system also handles the audio without needing a computer. The ESP32-P4 connects to the USB music drive and DDJ-FLX4, ...
Circuit Digest

RP2350 Microcontroller Drives Full 1080p HDMI With No Framebuffer Using Scanline Technique

A normal 1080p framebuffer at 24‑bit color needs almost 6 MB, but the RP2350 has only about 520 KB of RAM, so storing even ...
Circuit Digest

Qorvo's QPA9510, A Power Amplifier Supporting GSM, UHF, and FM Bands

The QPA9510 is a general-purpose amplifier covering 100 MHz to 1000 MHz, spanning GSM, E-GSM, UHF, and FM bands. Because the ...
Circuit Digest

Ball-Balancing Robot Uses a Mirror to Stay Compact; Pi Handles Vision, Leaves Motor Step Timing to 3 RP2040 Chips

MirrorBallBot, an open-source ball-balancing robot from a maker using the GitHub handle AndreaFavero71, looks at its platform through a mirror rather than from above. The camera sits to the side and ...
Circuit Digest

Build Smarter, More Resilient 48V Power Systems with Energy-Aware Digital Power Monitoring from Microchip

The move to 48V power architectures demands that digital power monitors have an additional operational margin of up-to-65V ...
Circuit Digest

JioFind 4G GPS Tracker Teardown: A Complete Inside-Out Hardware Breakdown

Unlike traditional GPS trackers that require users to have an independent data plan, the Jio Find uses Jio's number-sharing ...