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caspar

I have fun building things and learning

Germany

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This user joined on 08/02/2025.

My Projects

compact, energy-efficient, battery-powered system for ePaper-based display of information gathered via Wi-Fi

inki - low power wireless epaper device

Projects I Like & Follow

2021 Hackaday Prize

A physical switch for my computer to choose between Linux and Windows

Hardware boot selection switch

stephen-holdaway Stephen Holdaway

Supplyframe DesignLab: 2023 Hackada…

Strip down PET#1 Recyclable plastic bottles. Convert into new usable 3D filament. Load up your favorite 3D printer and recreate!

The Recreator 3D - Make Recycled PET#1 3D Filament

joshua-r-taylor Joshua R. Taylor

Supplyframe DesignLab: 2022 Hackada…

Modular open hardware robot for uROS2 & Microblocks

Rosmo robot

A couple parted out Kaypro keyboards and a tired old Apple IIc monitor become a resto-mod late 70s looking AVR development workstation

Atari AVR Development Workstation

john-anderson John Anderson

This BTTF remote control has working speed via wireless transmission from the speed box.

Back-to-the-Future Remote Control Build

w-jason-altice W. Jason Altice

A clock based on 7-segment flip disc displays

Flip-disc clock

david-plass David Plass

Create awesome e-paper dashboards within minutes! Modularity? Check! Python3? Check? Works on Raspberry Pi Zero W? Check!

Inkycal - Your own E-Paper Dashboard

Featuring a ZnSe beam splitter and a pyroelectric detector, the FTIR spectrometer ensures precise molecular analysis with reliability

JASPER : FTIR

tony-francis Tony Francis

There’s a big unused window in my workshop and have wanted to try hydroponic culture for a long time. So here’s my attempt!

Hydroponic garden for the workshop

Geiger counter posing as an IoT device

IoT Geiger Counter with RN4870 BLE Module

florian-wilhelm-dirnberger Florian Wilhelm Dirnberger

Work in progress FMCW ground penetrating radar. Sharing measurements, build logs, and asking for feedback on sensitivity and antenna design

DIY 800..1600 MHZ FMCW GPR – in progress...

A locomotive for Ikea/ Brio wooden track. ESP32 + steering + speed control + self decupling

Locomotive for wooden tracks

In this project, we will build a tiny internet clock connected to your wifi to get time from NTP servers.

Tiny Internet Clock

A desk clock using high-quality bitmap images of the nixie numbers with Wifi network-based time updates and a web-based controls.

Faux Nixie Clock

dan-julio Dan Julio

Retrofit an old clock. Sync to internet time with Network Time Protocol (NTP)

Upcycling Old Clock with NTP

A clock that uses a tuning fork as a time reference, but calibrated!

A more precise Tuning Fork Clock

Data transmission using an LED as a photodiode

Better Than Bluetooth

Get 1 Hz blink LED from the radio signal

1 Hz Challenge on Sunday morning

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Bits