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John Opsahl

I am actively looking for my next unbounded design challenge.

Dallas, Texas
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14 Followers
20 Following
10 Projects
136 Likes
john-opsahl
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This user joined on 07/09/2019.

3.8k
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a custom three axis cnc machine for carving candles.
Project Owner Contributor

CNC Candle Carver

John OpsahlJohn Opsahl

8.3k
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a machine to create canvas paintings of your favorite digital images
Project Owner Contributor

If ( ) Then {Paint}

John OpsahlJohn Opsahl

4k
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a safe, low-cost IV fluid warmer solution; for when commercially available IV fluid warmers are too expensive or cannot be sourced
Project Owner Contributor

OpenFluidWarmer

John OpsahlJohn Opsahl

3.2k
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create canvas paintings from digital images using a standard three axis cnc machine
Project Owner Contributor

Project Convert To Paint

John OpsahlJohn Opsahl

2.1k
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detect, log, and analyze boat traffic
Project Owner Contributor

BoatDetect

John OpsahlJohn Opsahl

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hacks to avoid touching shared surfaces in public spaces
Project Owner Contributor

Hands-Free

John OpsahlJohn Opsahl

View all 10 projects

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Time to get loggin'! Capture a creative new data set for this data logging contest.
Project Owner Contributor

Data Loggin' Contest

John OpsahlJohn Opsahl

Things I've Built

Automated 5 Gallon Bucket Feeder

A custom 5 gallon bucket feeder for pets. https://www.instructables.com/id/Automated-5-Gal-Bucket-Feeder/

yaxb

A joystick controlled wall plotter with record and playback capabilities.

Skittle Pixel8r

A machine that creates images using Skittles as pixels. https://www.instructables.com/id/Skittle-Pixel8r/

3.3k
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E-Paper Multipurpose Dashboard powered by Li-Po with roughly four months battery life
Project Owner Contributor

EPaper Dashboard

Boris ShabanovBoris Shabanov

3.3k
44
4
24
High Flow Oxygen Concentrator 15 LPM at 90%+ Concentrated o2 https://oxikit.com
Project Owner Contributor

OxiKit Oxygen Concentrator

OxiKitOxiKit

2.8k
127
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Because we need to prove there are still things people do better than machines...
Project Owner Contributor

Robotic Trombone: The RoboTrombo Music Machine

iSaxiSax

2k
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This device is for automating a timed inflation/deflation cycle for an inflatable vest.
Project Owner Contributor

Automatic Timed Inflation Device

TevianTevian

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Morphing clock
Project Owner Contributor

GETULA

ekaggrat singh kalsiekaggrat singh kalsi

1.3k
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It can detect multiple objects with each ping
Project Owner Contributor

Arduino Ultrasonic Radar

mircemkmircemk

1.1k
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GPS Guided Parachute Recovery System
Project Owner Contributor

R2Home

hadji.yohanhadji.yohan

856
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A home built liquid handling workstation robot that makes images out of dyed liquid
Project Owner Contributor

Liquid Lite Brite

zachfrewzachfrew

841
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A 3D printable servo controllable butterfly valve for my air filter system
Project Owner Contributor

3D printable 125mm butterfly valve

FabFab

812
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When do your flowers have enough water, and how do you know?
Project Owner Contributor

Soil moisture monitoring in a flower garden

Joseph EoffJoseph Eoff

548
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Primary/secondary water loops & 12 peltier units with a 0-30°C set-point.
Project Owner Contributor

1kW Solid State Peltier Heat Pump

David ScholtenDavid Scholten

479
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A Project of building a working miniature fridge/freezer https://youtu.be/wh7T6XxJqcI https://youtu.be/e0TZrJyWG24
Project Owner Contributor

Miniature Freezer

Jung Hoon LeeJung Hoon Lee

458
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An Arduino powered flow-meter for use in geography river studies and environmental monitoring projects
Project Owner Contributor

Open Flow Meter

EbenEben

438
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We run a Precious Plastic Workspace and want to expand our abilities to process plastic. This project is about making plastic sheets.
Project Owner Contributor

Making Plates out of Recycling Material

DevLab.nrwDevLab.nrw

130
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Recently, I saw many Makers publishing their own DIY thermometers. So I decided to make my own infrared thermometer.
Project Owner Contributor

DIY Infrared Thermometer

RachelAnneRachelAnne

120
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10 components to assemble a battery powered plain vanilla ESP32 module for something (hopefully) useful
Project Owner Contributor

Minimal Battery Powered ESP32

GuidoGuido

103
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Overcome temperature imbalances in homes with forced air built before modern HVAC design using a variable speed booster fan.
Project Owner Contributor

Forced air HVAC Smart Psuedo-Zoning

EcPcEcPc

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Versatile and powerful environment monitor
Project Owner Contributor

Northcliff Enviro Monitor

rifowlerrifowler

View all

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initrd wrote 03/21/2021 at 19:00 • point

Thanks for following :) 

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nj1337 wrote 09/24/2020 at 13:47 • point

Hello ! Thank you for following https://hackaday.io/project/173600-paqm-portable-air-quality-meter

  Are you sure? yes | no

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