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My watch runs off "disposable" lithium cells. I retrofit it to run like a grandfather clock: weights and gravity.
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Gravity-Powered Digital Clock

ethanEthan

Created in 1972, the Model 832 was designed as part of a training program to teach both digital electronics and computer operations.
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NRI Model 832 Digital Computer Reproduction

michael-gardiMichael Gardi

Air-gapped Double Ratchet protocol on a commercial Arduino kit.
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Arduino End-to-End Encryption

aritz-erkiagaAritz Erkiaga

A sealed field radio with CRT terminal interface, physical controls and Spotify streaming. Built as a fully self-contained hardware device.
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A-63 Field Radio

markus-httnerMarkus Hüttner

In 1995, the UK game show, The Krypton Factor, tried to reinvent itself. They needed a laser matrix game, and I was involved.
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Prime time game show, lasers and an Amiga

tony-goacherTony Goacher

A technical and historical analysis of the LM10 opamp and voltage reference featuring new high-resolution die images.
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LM10 die shot matches historical mask photograph

aranwelttAranweLTT

Project designed and 3D printed to simulate and pay homage to those used in the SW saga
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STAR WARS HOLOGRAM

srrubioSrRubio

I wanted to buzz around 2024 EMF camp in something different. So I designed and built an electrically powered, tracked tricycle.
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Electric Tracked Tricycle for EMF camp

tony-goacherTony Goacher

Bring the Excalibur 64 back to life
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Excalibur 64 The Recreation

daveDave

This ECC83 (12AX7) preamplifier project successfully delivers the warm, pleasant, and dynamic sound characteristic of vacuum tubes.
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Building a Stereo ECC83 (12AX7) Tube Preamplifier

mircemkmircemk

How to test the health of your servos before using them
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Arduino Servo Tester with INA219

iwilzIWILZ

A retrosystem based on the elegant 8/16 bit 6809 processor capable of running UniFLEX and OS9 level II multiuser/multitasking OS
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6809/6309 Eurocard CPU System

roelof4roelof4

A handy adaptor to connect USB powered devices to a bench power supply for lab and test purposes!
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USBpwrME

ks-elektronikdesignKS-Elektronikdesign

Classic arcade with all the latest technological advancements, ready for the classics. Enjoy!
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THE ULTIMATE MINI ARCADE

srrubioSrRubio

BK7258 is connected to 2x2.16" 480x480 AMOLED, one L1+L5 frequency band GPS module, and one SIM7670G 4G module. And 4 sensors.
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BK7258 240MHz+2x480MHz low-power IoT platform

eleclabElecLab

Электрический трёхколёсный велосипед с CVT
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Электрический трёхколёсный велосипед

evgeniy-anEvgeniy An

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