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Ahmed Hefnawi (Volta)

Innovator, Engineer, Maker, IoT, Cyclist, Diver, Traveler, Full Stack, Python, C++ & FreeBSD.

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18.7k Followers
53 Following
4 Projects
45 Likes
ahmed-hefnawi-volta
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This user joined on 03/14/2014.

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https://hefnawi.me/posts/detect-sars-cov-2-near-infrared-spectroscopy/
Project Owner Contributor

Detecting SARS-CoV-2: Near-infrared spectroscopy

ahmed-hefnawi-voltaAhmed Hefnawi (Volta)

2.8k
2.8k
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This project is a Heat Conduction Isothermal Calorimeter based on the designs of Dr Lars Wadsö, Sweden.
Project Owner Contributor

Isothermal Calorimeter

ahmed-hefnawi-voltaAhmed Hefnawi (Volta)

2.7k
29
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Measuring strain using strain gauges.
Project Owner Contributor

Strain Indicator V2.0

ahmed-hefnawi-voltaAhmed Hefnawi (Volta)

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IoT Wireless Nodes to gain Real-Time Insights into Structural Health Monitoring Data of Critical Structures.
Project Owner Contributor

IoT SHM Node [ Structural Health Monitoring ]

ahmed-hefnawi-voltaAhmed Hefnawi (Volta)

Things I've Built

Strain Gauge Indicator

This is a simple strain gauge indicator I built for my Civil Engineering class at Alexandria University. It had an OLED display to show the voltage as well as the milli-Strain calculated from a strain gauge (OMEGA) fitted on an aluminium beam.

138.5k
1k
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High Power, High Performance 400V 300A 100+kW Motor Controller fully compatible with VESC®
Project Owner Contributor

Axiom: 100+kW Motor Controller

marcosMarcos

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419
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3D Printed ESP32 Powered Video Streaming Robot
Project Owner Contributor

ESP32 WiFi Robot

maxkMax.K

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The slightly different USB peripheral
Project Owner Contributor

pcbtc (GaN edition)

lucy-fauthLucy Fauth

23.5k
350
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Open-source wire bending CNC machine for wires at 1mm and less in diameter.
Project Owner Contributor

Precise Wire Bending Machine

ji-prausJiří Praus

21.2k
4.7k
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Demonstration robot for learning principles of real-time control using Raspberry Pi, RT Linux, and ROS.
Project Owner Contributor

Bobble-Bot

mike-mooreMike Moore

20.6k
39
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Rig and technique for digitizing 35mm film negatives.
Project Owner Contributor

35mm Flim Negative Scanning

stephen-holdawayStephen Holdaway

15k
87
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A neat Tree like decoration based on the RGB LEDs.
Project Owner Contributor

RGB Tree

paczkaexpressPaczkaexpress

13.3k
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A 16-bit (and a 32bit) FPGA CPU I call Lion CPU and a computer, the Lion computer. Everything built from scratch.
Project Owner Contributor

Lion FPGA CPU/Computer

leonLeon

7.5k
67
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New spin on the laser blocking musical instrument
Project Owner Contributor

Upright Laser Harp

jonathan-bumsteadJonathan Bumstead

7.4k
1.7k
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Augmenting materials with electrical properties ⚡⚗️
Project Owner Contributor

PolySense

drixDrix

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Tomographic scanner using my X-Ray machine, a simple motor to rotate the object and a reconstruction software
Project Owner Contributor

X-Ray CT Scanner

francisco-piernasFrancisco Piernas

5.8k
20
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A laser cuttable face shield
Project Owner Contributor

Face Shield (Laser Cuttable)

peter-jansenpeter jansen

5.7k
993
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1/2 Watt stereo audio amplifier with extra gain and loudness control.
Project Owner Contributor

LM386 stereo audio amplifier

carbonosilciocarbono.silício

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Opamp, 555, comparator, Not, Nand, Nor
Project Owner Contributor

IC tester

carbonosilciocarbono.silício

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An electric mountain board, built from scooter parts.
Project Owner Contributor

REMB - Raz0r Electric Mountain Board

daren-schwenkeDaren Schwenke

2.7k
60
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RC controlled lasercut Strandbeest
Project Owner Contributor

Strandbeest

joJo

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This project is cuffless cNIBP research platform with ECG(two-electrode) and PPG
Project Owner Contributor

Continuous Non-Invasive Blood Pressure ECG+PPG

gcyGCY

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A 7-segment display using thermochromic liquid crystal sheets that are heated and cooled by peltier elements
Project Owner Contributor

Thermochromic Temperature & Humidity Display

moritz-v-siversMoritz v. Sivers

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[skaarj] wrote 10/02/2016 at 16:33 • point

Thank you for following my project.

Also, I'm FreeBSD maniac so we are in the same club.

  Are you sure? yes | no

Ahmed Hefnawi (Volta) wrote 10/04/2016 at 14:37 • point

You welcome, it's my pleasure!

Wow I'm glad to find a fellow FreeBSDer on HackADay :D ;)

  Are you sure? yes | no

Luke Beno wrote 09/28/2015 at 11:09 • point

Thanks for the skull, awesome projects, i'd love to help you get a few of your sensors publishing data to analog.io

  Are you sure? yes | no

Ahmed Hefnawi (Volta) wrote 09/28/2015 at 11:56 • point

Thanks Luke,

Great job on the analong.io! That sounds amazing, I'd love to publish the data to your IoT stack =)

  Are you sure? yes | no

Alex Rich wrote 05/13/2015 at 23:50 • point

thanks for the follow!

  Are you sure? yes | no

Ahmed Hefnawi (Volta) wrote 05/13/2015 at 23:55 • point

You welcome!

  Are you sure? yes | no

ProtoVoltaics wrote 04/21/2015 at 15:23 • point

Thanks for the skull! More updates on the way!

  Are you sure? yes | no

Ahmed Hefnawi (Volta) wrote 04/21/2015 at 15:30 • point

Great Job on your Pick and Place Machine

Looking forward to it!

  Are you sure? yes | no

Kert wrote 04/21/2015 at 04:00 • point

Thanx

  Are you sure? yes | no

Ahmed Hefnawi (Volta) wrote 04/21/2015 at 11:15 • point

You welcome.
I really like your retina array =)

  Are you sure? yes | no

Radu Motisan wrote 04/14/2015 at 19:15 • point

Thanks for your interest in uRADMonitor!

  Are you sure? yes | no

Ahmed Hefnawi (Volta) wrote 04/14/2015 at 19:33 • point

You welcome Radu,
Amazing work on uRADMonitor, keep it up!

  Are you sure? yes | no

Radu Motisan wrote 04/14/2015 at 19:41 • point

I'll do my best, thanks!

  Are you sure? yes | no

frankstripod wrote 03/13/2015 at 17:43 • point

Thank you for the follow! :)

  Are you sure? yes | no

Ahmed Hefnawi (Volta) wrote 03/13/2015 at 18:36 • point

My pleasure =)

  Are you sure? yes | no

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