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Greg Zumwalt

Retired but still enjoy learning.

Oklahoma

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This user joined on 02/05/2019.

My Projects

A 3D Printed Hopping Mechanism.

Hopper.

You just gotta love refrigerator magnets...

Refrigerator Rover

An electro-mechanical Valentine Day automaton with an 18 layer heart.

A 3D Printed Valentine For My Wife, With A Twist.

A magnetic tensegrity model.

3D Printed Magnetic Tensegrity Model

Sometimes simple is better.

A 3D Printed Simple "Walking" Mechanism.

Uses a single stepper motor driving two cams to control the seven segments.

A Mechanical Seven Segment Display.

View all 80 projects

Things I've Built

Single Cylinder Air Engine Rolling Chassis

This was an experiment in how far the air engine I had previously designed would propel an open chassis vehicle using balloon power. Ran 50 feet on concrete.

Wifi Paddle Boat

A pool toy I designed for the grandkids.

Fab Lab Tulsa 1 (FLT1)

Fab Lab Tulsa asked me to design a boat for their boat race challenge, and I gladly accepted!

Hummingbird

An animated Hummingbird I designed for my wife, who loves hummingbirds.

Darth

Animated / exploding Darth Vader model.

Projects I Like & Follow

The 2017 Hackaday Prize

FREE and Open Source, Arduino Due based Telescope Control GOTO

rDUINOScope Boiana

Dessislav Gouzgounov

Breaking the encryption on the Lerdge series mainboards so I can try porting Marlin 2.0 to it.

Lerdge 3d Printer Mainboard Hacking

Get high-resolution 3D printing by building your own.

Laser SLA 3D printer with galvo

Instead of showing the time like in classical type of clock with the hands or numbers, it shows you a time by displaying the text

Word Clock base on RGB LED WS2812B

The EVI is at-risk of becoming extinct. Explore the development of a DIY EVI Windcontroller for survival of this great instrument

DIY EVI-Style Windcontroller

Replace the bimetallic thermostat with a few microcontroller based thermostats to control the combi boiler.

Multi Zone Wireless Thermostat

Jose Maria Rodriguez Saez

The 2018 Hackaday Prize

Universal 3D printed gripper for robotics.

Modular Universal Jamming Gripper

An launch pad and gantry for the LEGO Saturn V model. Crane, crew arm, gantry arms, service arms and model itself are animated for liftoff.

An animated Saturn V launch pad and gantry

Tiny IOT Solution based on Arduino& SIM808 GPS/GPRS

IOT- SIM808 GPS Tracker Based on Arduino

Week of Arduino

Arduino Skillz

The 2018 Hackaday Prize

UNMANNED GROUND VEHICLE, Compatible with Arduino

M1 Rover

Simple ESP32-based robot controlled with ESP8266-based wifi remote

Robo32

The 2018 Hackaday Prize

Using an Wemos D1(esp8266), cheap power supply, a switch, and a temp sensor you can automate anything

Home Automation on the Cheap V2

Experimenting with 3D printed tools.

3D Printed Opensource Tools

Internet enabled lock for main door

IoT Main Door Lock

daniel.blanquez

The 2018 Hackaday Prize

PCB Badge, with ESP8266 microcontroller (ESP-12) with WiFi, 5 directional Neopixeles.

Oshwi, the octopus IoT Badge

Gustavo Reynaga

A seven segment LED display clock, immersed in mineral oil.

JAR Clock

A BCD binary clock that fits inside of a jar

Binary desk USB jar clock

View all

Bits

Michael Gardi wrote 08/02/2020 at 20:58

I really really love your work. It makes me happy. Thanks!

Are you sure? yes | no

Greg Zumwalt wrote 08/03/2020 at 00:08

Thank you so very much Michael for your very kind words, and I'm truly happy to bring happiness to you! Greg

Are you sure? yes | no