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rkramer

Read mathematics at uni, autodidact in other stuff.

Seattle

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This user joined on 02/15/2025.

My Projects

A StarTrek-esque motion-triggered sliding door to prevent my Bad Kitty from bringing me scurrying gifts in the middle of the night.

Cat Valve

rkramer rkramer

Build a working Graham escapement mechanism with PLA printed wheel and armature and minimal investment of time, money, and effort.

The (Original) 1Hz Challenge

rkramer rkramer

Things I've Built

Pump controller

I needed a water sensor to control a bilge pump in a rather tight space. Full details https://www.rkramer.dev/projects/sump/index.html.

Projects I Like & Follow

A near-Arduino Nano form factor and Arduino compatible board based around a "better" and cheaper AVR MCU (currently an ATtiny1616)

The Launchpad - A $2 Arduino Nano alternative

clyde-d-corpuz Clyde D. Corpuz

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 2017 Hackaday Prize

Absolute best watch ever !!!!

BPW34 solar powered led watch

Hackaday Prize 2019

Convert FPV racing drone into an interceptor using Raspberry Pi

Open Source Air Defense

Convert Kicad PCB files into GCode with isolated PCB Nets

PCB Isolation Routing Software

michael-schembri Michael Schembri

A MIDI controller with arcade push buttons and 32 RGB LEDs

MIDI Fighter

A relatively inexpensive and flexible tool to generate heterostructures, devices and integrated systems

Rapid Prototyping of Solid State Devices

sebastin-elgueta Sebastián Elgueta

2021 Hackaday Prize

A resilient strip (of tape measure fame) triad fed through centrally driven rollers extends a structure constrained by self spacing ribs

OBoom: low cost deployable linear actuator

ArduinoGotchi is a real Tamagotchi P1 emulator running in Arduino UNO hardware

ArduinoGotchi

gary-kwok Gary Kwok

Rotary Encoder with USB Interface based on ATtiny85

ATtiny85 TinyKnob

stefan-wagner Stefan Wagner

let's build a low-cost drone that can be controlled using a smartphone.

Low Cost Drone using ESP32

8-32 channel TI ADS1299 Arduino shield for EEG, EMG, and EKG bio-signals acquisition

HackEEG

adam-feuer Adam Feuer

a homebrew FPGA CPU with a native Pascal compiler and a simple development environment

Tridora-CPU

PC game to build virtual 3D racetracks in your house then race actual physical drones on them

Mixed Reality Drone Racing

An all in one air quality and environment detector powered by esphome, include PM2.5, CO2, Temperature.

AirCube - All in 1 Air Quality Monitor

Trying to build a radio receiver out of household items, garbage, and other junk. The goal is to have everything from scratch except tubes.

Trash radio receiver

beau-l-robertson Beau L Robertson

Modbus Display (Software)

hasan-kara hasan kara

This LED matrix clock displays the current time using signals received from the GNSS satellites orbiting the earth!

Digital Satellite Clock

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