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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

Using NFC RF energy harvested from a phone tap to submit commands and start a microcontroller. No standby power.

Harvesting NFC Energy to Transmit Commands

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

Tinta - low power wireless epaper device

Web clockgenerator: Web control for a Si5351A via a Pico W.

Simple clock generator with webinterface

Projects I Like & Follow

Low/zero cost upgrades for the Monoprice Select Mini 3D Printer.

Monoprice Select Mini Maximum 3D Printer Mods

us-water-rockets U.S. Water Rockets

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

Hackaday.io Project

2021 Hackaday Prize

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

Hardware boot selection switch

stephen-holdaway Stephen Holdaway

Official Hackaday Prize Entry

Easy to configure & use wireless home automation network including a central station and various low-power nodes.

SmartHome

arcadia-labs Arcadia Labs

While you could use a WiFi shield, or one of the many, many, ESP8266-equipped 'duinos out there, why not just make your USB cable WIRELESS?

Wireless USB for Instant IoT

thane-hunt Thane Hunt

SST - ESP8266 WiFi Smart Thermostat based on Souliss IoT Framework

SST - ESP8266 Smart Thermostat WiFi IoT ready

Official Hackaday Prize Entry

This project is a clock with radio receivers which can receive the exact time from the GPS satellites or from the DCF77 transmitter.

"Connect" to an atomic clock in space! GPS, DCF77

An optimized "re-mix" of Adafruit's GFX library (and LCD drivers) for Arduino (AVR).

PDQ_GFX optimzed AVR LCD graphics

Hackaday Prize 2019

Blackbox shifts 3D printing towards a multitool manufacturing robot.

Multitool 3D Printer - Blackbox

marc-schmann Marc Schömann

A dual head PNP machine that uses Openbuilds hardware, a Smoothieboard controller, dual camera vision, automatic/drag feeders, and OpenPnp

Pick and place machine - Smoothieboard/OpenPnp

An interface breakout board for Raspberry Pi Compute Module 4, permanently attached to a 7" IPS touchscreen display

Raspberry Pi CM4 Сarrier with Hi-Res MIPI Display

sasha-shturma Sasha Shturma

The 2017 Hackaday Prize

Speeding up Search & Rescue by locating the position of emergency radio beacons using an autonomous drone.

Bloodhound: Autonomous Radiolocation Drone

phil-handley Phil Handley

Hackaday Prize 2019

Creating a free & open source global IoT network, democratizing access to space by miniaturizing aerospace systems.

FossaSat-1, Open Source Satellite

julian-fernandez Julian Fernandez

The 2016 Hackaday Prize

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

OtterVIS LGL spectrophotometer

esben-rossel esben rossel

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

A BASIC computer which generates composite video, reads PS/2 keyboard input and has an 8KB EEPROM IC for saving BASIC programs to.

AVR BASIC Computer V0.1

A portable Yagi antenna for working amateur radio satellites

WA5VJB ultra portable dual VHF/UHF Yagi

A general purpose robot joint using a cycloidal gearbox and an ODrive modified to support active compliance

3D Printed Robot Joint with Active Compliance

tim-wilkinson Tim Wilkinson

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