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Mark Valentine

I am an inventor delighted by magical technology.

Kansas
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This user joined on 08/09/2025.

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This project is my entry for the 1 Hz challenge.
Project Owner Contributor

Look, Ma: No Capacitors! (or Inductors . . .)

mark-valentineMark Valentine

Things I've Built

R&J Roulette Wheel

This is an accessory for the Levitron magnetic top. A ring of chasing LED lights encircles the floating top and stops when a magnetic sensor detects the top has fallen. Here's a link: https://photos.app.goo.gl/ej457K1aPNfbFsUaA

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Follow for the 'Hacklet' and latest news about hackaday.io
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Hackaday.io Project

lutetiumLutetium

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A super cheap decently resolving open source VIS-spectrophotometer. The cheapest in the OtterVIS line.
Project Owner Contributor

OtterVIS LGL spectrophotometer

esben-rosselesben rossel

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My attempt to put together a digital clock made of analog clocks, as originally created by Humans since 1982 and David Cox
Project Owner Contributor

Clock Clock

matt-finchMatt Finch

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Interfacing 3.5" HD 1.44 MB Floppy drive through FDD connector with Arduino UNO
Project Owner Contributor

Arduino raw data 3.5" Floppy reader

lukas-vacekLukas Vacek

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robotic writing clock
Project Owner Contributor

doodle clock #2

ekaggrat-singh-kalsiekaggrat singh kalsi

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Building computers on Arduino platform is fun. How far can we take this?
Project Owner Contributor

Arduino Desktop

dylan-brophyDylan Brophy

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This is Amazon's Alexa running on a Raspberry Pi Zero built into a mid-century modern intercom for your desk.
Project Owner Contributor

Retro Echo - Pi Zero Assistant

chris-broughtonChris Broughton

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A multi-mode scanner and data logger based on Adafruit Feather & Arduino
Project Owner Contributor

Science Tricorder by Olympus Heavy Industries

queadlunnQueadlunn

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Clock that chimes on the hours, halves, quarters
Project Owner Contributor

Chiming Clock

scoopsScoops

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A simple desktop clock that displays the time using pieces of pizza. (RPi Zero 2W, NixOS, SD, SolidPython, OpenSCAD, Astro, React)
Project Owner Contributor

Pizza Clock

likeabloblikeablob

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Single channel TTL driver for in vivo or in vitro optogenetics.
Project Owner Contributor

Optogenetics TTL driver

nicolas-nunnNicolas Nunn

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(work in progress) Just another word clock - except it's in japanese and can show time and date!
Project Owner Contributor

Japanese Word Clock

mechatronickmechatroNick

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