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John Loeffler

Mechanical Engineer Manager of College of Engineering 3D Printing Lab. I Like to make stuff that is useful or interesting.

Boca Raton, Florida
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150 Followers
182 Following
17 Projects
954 Likes
john-loeffler
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This user joined on 04/25/2015.

8.6k
62
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An Arduino UNO Compatible Board with isolated Glowing headers and some Extras
Project Owner Contributor

Uno Plus+

john-loefflerJohn Loeffler

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Using Arduino Leonardo HID Control MAC/PC (No Drivers Required)
Project Owner Contributor

Vo-LUM Control

john-loefflerJohn Loeffler

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Uses an E-ink Display to Realtime Update Select Crypto Currencys
Project Owner Contributor

CRYPTOiNK

john-loefflerJohn Loeffler

6.9k
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A GPS controlled Spotlight Drone
Project Owner Contributor

Lumos - Spotlight Drone

john-loefflerJohn Loeffler

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Open Source Analog Acoustic Levitation PCB
Project Owner Contributor

Open LEV

john-loefflerJohn Loeffler

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I didn't have enough to buy a Lab Bench PSU... So I made one.
Project Owner Contributor

OPEN Power

john-loefflerJohn Loeffler

View all 17 projects

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Using UV LEDs, Phosphorescent Glow material, and clever mechanisms, a reusable and exciting display can come to life!
Project Owner Contributor

UV Glow-In-The-Dark Laser Displays

tuckershannonTuckerShannon

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Flea-Scope™ is a very low-cost and easy-to-use 18 Msps USB oscilloscope and mixed-signal logic analyzer.
Project Owner Contributor

Flea-Scope USB O-scope (18 Msps, $13 BoM, WebUSB)

richard-testardiRichard Testardi

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World's Smallest RP2040 Development Board
Project Owner Contributor

RPDot

william-herrWilliam Herr

6k
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A compact, silent, high-performance open-source closed-loop (servo) stepper motor driver with USB, CAN-FD and 48V support
Project Owner Contributor

CLN17 V2: $12 BoM Closed-Loop Driver for NEMA17

anton-khrustalevAnton Khrustalev

4.8k
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DIY oscilloscope with STM32 Microcontroller which has better performances than Arduino and is also cheaper.
Project Owner Contributor

DIY Simple 500КHz Oscilloscope with STM32

mircemkmircemk

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14
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An input device to enter any Unicode character over USB, in style
Project Owner Contributor

Unicode Binary Input Terminal

stephen-holdawayStephen Holdaway

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Managing resistors is a chore. Well, with the Resistorganizer, you can just jam your loose resistors into a breadboard and be done with it.
Project Owner Contributor

The Resistorganizer

mikeMike

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This frequency meter uses an inexpensive STM32 microcontroller and this time, thanks to his better perfomances of the MCU, the frequency ra
Project Owner Contributor

Simple STM32 Frequency meter from 1Hz to 30 MHz

mircemkmircemk

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kinetic sound and light sculpture
Project Owner Contributor

intermittent luminal phase

eirik-brandalEirik Brandal

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A simple project involving a Sound Sensor Module, connected to and controlling an LED.
Project Owner Contributor

Raspberry Pi Sound-Activated LED

electorialsElectorials

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This is a clone board on which I soldered all the components, it is fully compatible with Arduino Nano and UNO.
Project Owner Contributor

I made an ARDUINO NANO Clone Board

lithium-ionLithium ION

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I give my earphones a wireless audio transmitting power, Now I can plug any 3.5mm headphone/earphone and listen over bluetooth.
Project Owner Contributor

My 3.5mm Earphones got Wireless Bluetooth

electroboyElectroBoy

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snackster laptop
Project Owner Contributor

sudo make me a sandwich [cyberdeck]

trosephtroseph

157
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A robotic cricket wicket that automatically moves left/right to intercept pitched balls.
Project Owner Contributor

Automatic Moving Cricket Wicket

swaleh-owaisSwaleh Owais

134
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Built a little board using MCS1806 linear hall-effect current sensors, attached it to a pico to make it WIFI enabled!
Project Owner Contributor

Raspberry Pi Pico 3 Channel WIFI current meter

sciencedude1990sciencedude1990

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Linear Actuator with Solar Power
Project Owner Contributor

How to Control Your Linear Actuator

hayleymannn23444hayleymannn23444

109
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Solar Harvesting LIC Powered vibration monitoring solution makes uses of embedded AI models to classify vibration anomalies.
Project Owner Contributor

Vibration anomaly detection on logistics

ivan-arakistainIvan Arakistain

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Portable Variable Power Supply
Project Owner Contributor

CH32X035 USB PD Adapter

stefan-wagnerStefan Wagner

71
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Homegrown solder sucker
Project Owner Contributor

Solder Sucker with DIY PWM controller

urs-schmidtUrs Schmidt

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Cat wrote 07/07/2020 at 04:16 • point

Very interesting projects.  I've been thinking about a drone similar to yours for a long time but never really made one. Nice!

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Craig wrote 06/30/2020 at 00:44 • point

Thanks for liking/following the SBC-85 and #Magnetic Bubble Memory Makes a Comeback projects.

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Weff wrote 06/21/2020 at 09:12 • point

Hey John, Thank you for liking and following my project! Your open power project is insanely cool, and looks incredibly useful to a beginner such as myself. 

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Alexey Voronin wrote 06/18/2020 at 16:13 • point

Thanks for liking & following my projects!

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Eric Hertz wrote 06/17/2020 at 14:25 • point

Hey, John! I appreciate the follows!

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Dr. Cockroach wrote 06/13/2020 at 21:42 • point

Hey John, that was quick. Thanks for following my #LLTP - Light Logic Transistorless Processor 

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dannyvandenheuvel wrote 06/13/2020 at 16:16 • point

Thanks for liking and following my project #3D printer Interface 

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Stefano Valfrè wrote 06/11/2020 at 08:18 • point

Thanks for following #SolderDuino 

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Mark Wilson wrote 06/08/2020 at 04:09 • point

Thanks for following!

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Ahmed Hefnawi (Volta) wrote 06/07/2020 at 20:37 • point

Thanks for the like & follow on the NIRS project: https://hackaday.io/project/170662-detecting-sars-cov-2-near-infrared-spectroscopy

=)

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Vittorio Loschiavo wrote 06/07/2020 at 05:13 • point

Thanks  for following and like to my project https://hackaday.io/project/172235-energy-and-water-mushroom

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Starhawk wrote 06/06/2020 at 05:24 • point

Hey thanks for the +Likes and Follows!

I wish I had a more mechanical mind... my father has a thing where he can look at a machine and take it apart in his head and figure out how it works. I can kinda sorta do that with electronics but mechanically I'm fit only for a dunce cap :(

PM me sometime, if you have some spare time, tho -- I've got a project that needs a mechanical mind to look it over. It's a bit crazy but it's interesting... or so I'd say ;)

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Ken Yap wrote 06/04/2020 at 01:41 • point

Thanks for liking #Targeting SDCC to the 8080 

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roelh wrote 06/02/2020 at 20:22 • point

Hi John, trhank you for liking and following #Kobold K2 - RISC TTL Computer !

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Ken Yap wrote 06/01/2020 at 14:47 • point

Thanks for liking #Breakout board panels 

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Joel Fairstein wrote 05/29/2020 at 01:59 • point

Thanks for following a diy solar car for $12k !!

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Jasper Sikken wrote 05/28/2020 at 15:49 • point

Thanks for following my project https://hackaday.io/project/171829-18650-battery-discharge-tool, it is in progress, so expect some changes

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kristina panos wrote 05/27/2020 at 14:01 • point

Thanks for liking and following the dactyl! Should have new pictures up soon.

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Stefan Wagner wrote 05/27/2020 at 07:13 • point

Thank you for liking and following my project! (https://hackaday.io/project/171766-jtag2updi)

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