electronics

A user shares that they are assembling a kit designed by Cherry Takuan-san for a DIY CPU, with original designs licensed under CC BY 4.0. The CPU is similar in complexity to early-1980s 16-bit home computers.

Tanuki has built a fully functioning computer processor in a home lab by stacking custom circuit boards, and is running logic and mathematics tests on its ALU, achieving complexity similar to early-1980s 16-bit home computers.

A showcase of a smart e-paper desk dashboard project using ESP32-C6 SuperMini and a 7.5-inch display, part of a 3D printing series by Adafruit.

Announcement of an extreme 220GHz+ broadband silicon capacitor in a 0201 package with 22nF capacitance, part number X2SC 0201M 22nF BV11.

An AI-generated, self-directed electronics course for hams and makers, teaching analog circuits through hands-on scope measurements. The GitHub repo includes a syllabus, 15 experiments, projects, and a print build script.

A feature on Akizuki Denshi, a 55-year-old Japanese electronics parts retailer known for publishing schematics before open source was a term, and its founder's unconventional hands-on philosophy.

A Twitter thread curating free electronics courses from top universities like MIT, Stanford, and Georgia Tech, covering circuits, digital design, embedded systems, and more.

A DIY project building a calculator that uses panel voltmeters to display floating-point numbers, with a custom acrylic panel and CNC-machined lettering.

Article describes a counterintuitive oscillator circuit using a reversed NPN transistor with no base connection, which works via reverse avalanche breakdown.

An educational blog post explaining the capacitance multiplier circuit using op-amps, part of a series on 'cursed circuits'.

A hobbyist describes how to create a homemade FET transistor using a cadmium sulfide photocell, tape, and water as an insulated gate, demonstrating transistor action in a dark environment.

The author is physically building the classic pinball game 'Space Cadet Pinball', with key improvements such as addressing flipper overheating, insufficient pop bumper power, and creating an upper playfield and a unique ball return mechanism.

A beginner electronics roadmap from a maker who went from not knowing how to light an LED to building rovers and winning hackathons. It covers understanding circuits, using an Arduino, and building real projects.

A detailed guide on building and understanding the TD4 4-bit DIY CPU kit from Aliexpress, covering soldering, schematics, and operation principles.

This research explores using hydrogels to increase the dimensionality of transistors, potentially enabling new flexible or bioelectronic devices.

This article describes techniques for creating glass-to-metal seals for homemade vacuum tubes, explaining the challenges of thermal expansion mismatch and how to electroplate copper onto steel wire to improve bonding.

The article details the process of cloning a Sennheiser BA2015 battery pack using inexpensive NiMH cells and an NTC thermistor, criticizing the high cost of the original and providing a DIY alternative.

A detailed guide to building a low-cost, versatile direct digital synthesis (DDS) signal generator with features like sine, square, triangle, sawtooth waveforms, adjustable frequency, amplitude, duty cycle, and modulation.

A hobbyist project demonstrates hosting a simple website on an 8-bit AVR microcontroller using SLIP over a serial connection to a Linux PC, avoiding the need for Ethernet hardware.

Step-by-step guide to building a simple radio wave detector using aluminum foil and a piezoelectric lighter, explaining the physics of electromagnetic waves.