Bald Engineer

Engineer Pits a 555 Timer Against a Microcontroller in This Circuit Design Challenge A DC-motor controller that addresses the age-old saying, "Just use a 555 instead of a microcontroller!"

Carl Bugeja Introduces Microbot's CodeCell: Tiny MCU Board to Power Creative (Tiny) Robots This 18mm robot platform has an ESP32-C3, light sensor, 9-axis IMU, and enormous potential.

Dmitry Grinberg Boots Linux on a Four-Bit Calculator Chip — in Less Than A Week! This Intel 4004 Linux-capable computer might be slow, but it is art-worthy and can be hung on a wall

Tom Thoen's 31 Fun Experiements Board Revives a Classic Electronics Teaching Tool From Hobbyist to educator to Inventor, this fun kit pays homage to 1970s-era project kits.

EEVengers, Assemble: ThunderScope! 350 MHz Oscilloscope Streams 1 GSa/s Over Thunderbolt This open source PC-based oscilloscope rivals commercial options with 350 MHz bandwidth, 1 GSa/s sample rate, and an $800 price tag.

Bitluni's Magnetic LED Matrix Build Showcases Clever RISC-V Programming This project snaps together 12-bit color depth from 8x8 LED matrixes at 98 frames per second, with time to spare.

A ZX Spectrum in the Palm of Your Hand The ESP32 Rainbow is a ZX Spectrum-inspired single-board computer powered by an ESP32-S3 chip for an authentic-feeling emulation experience.

JawnCon 0x1's Wi-Fi Modem Badge Connects Vintage Computing Vibes to a Security Conference Hayes-styled badge runs Wi-Fi modem firmware on an ESP32 with fully functional red LEDs.

Problems With the Raspberry Pi Pico 2, Raspberry Pi RP2350 Deepen as Projects Hit By Erratum E9 A fly in the ointment, or a flaw in the chip, is causing some to pause or shelve plans to migrate RP2040-based designs to the RP2350.

65C02 Plus ATmega4809 Equals Colin Maykish's VR65C02, a Functional Two-Chip Computer An AVR emulates RAM, ROM, and IO devices for a real 65C02 running at a blazing 183 kHz.

Magic Eye Tubes are vacuum tubes that visually indicate a signal's strength. (It's the upper left-hand corner of the radio image.) retronics created a digital drop-in replacement!

retronic's DIY Digital 6U5 Magic Eye Tube Breathes New Life into Vintage Radios A circular display meant for a smartwatch enables this DIY replacement for a visual vacuum tube used in vintage radios.

Big thank you to MacroFab, Inc. for sponsoring this video and building a set of Bald SENSE Feather Wings. Their platform made it simple to finally bring a project I struggled soldering with DIY techniques to life. Upload a project and give them a try today: https://bald.ee/macrofab

PCB Build: DIY vs Turnkey Assembly with the Bald SENSE Feather Wing (and Macrofab) Accompany me as I guide you through the design, build, and turn-on process of my custom Bald SENSE Feather Wing—from the initial DIY approach to the vastly s...

From Test Equipment to Timepiece: Engineer Crafts HDSP-2000 LED Matrix Into a Wristwatch Vintage LED alphanumeric character modules in DIP package converted into an ATtiny85-powered wristwatch.

Thur 8/22 Stream: Let's do some RP2350 design. I want to upgrade my state-mode logic analyzer. Come say hi.

Upgrade State Mode LA with RP2350 in KiCad This board is a state-mode logic analyzer based on the RP2040. With the release of the new RP2350 I think there is enough GPIO to simplify the design.KiCad D...

Very cool use of some LED matrixes from 1975!

From Test Equipment to Timepiece: Engineer Crafts HDSP-2000 LED Matrix Into a Wristwatch Vintage LED alphanumeric character modules in DIP package converted into an ATtiny85-powered wristwatch.

At some point, my next video idea will come to me. And also, lunch. Also also, why are there still people who solder without flux?! But lunch.

Golioth for AI Streamlines IoT Data Transforms, ML Models, and Inferencing on Edge Connected Devices Partnership between Golioth AI and Edge Impulse streamlines capturing data, building an AI model, and updating it over-the-air.

This short capacitor talk covers MLCCs, Aluminum Electrolytics, and Supercapacitors (EDLCs.) I presented it at Crowd Supply's Teardown 2024.

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A new eZ80 CPU card for RC2014 computers #VintageComputing Recently there was an announcement that the venerable Z80 microprocessor would be discontinued. There are some more bodern Z80 compatible chips that are still being made. So there are opportunities…

This upcoming USB hub looks to be a useful tool for anyone developing USB-based devices...

USB Insight Hub Is the Ultimate Desktop Tool for Monitoring USB Devices Three-port USB 3.0 hub with individual TFTs to display voltage, current, and metadata about the connected devices.

The end of Mbed marks a new beginning for Arduino | Arduino Blog As you might have heard, on July 9th, Arm announced that the Mbed platform and OS are officially destined to reach end of life in July 2026, and therefore will no longer be maintained. The news has sent ripples through the embedded development community, particularly affecting brands like micro:bit,...

Cool approach to adapting the eZ80 to the RC2014

This eZ80 CPU Card Breathes New Life Into RC2014 Z80-Based Computers This eZ80 CPU module plugs into a carrier to replace the discontinued Z80 in computer designs.

It’s a LiPo garden!

The open-source Casio watch PCB replacement is getting an upgrade.

Joey Castillo Unveils Sensor Watch Pro, a Hackable, Low-Power, Open Source Wristwatch Platform Sensor Watch Pro is a Microchip L22-based PCB for Casio F-91W watch upgrade with a temp sensor, expandability, and long battery life