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jjohnson873

40 year career in electronic design and semiconductor applications. Fascinated by new product designs and ultra-low power.

Indianapolis, IN
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jjohnson873
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This user joined on 06/30/2017.

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1,235.5k
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Follow for the 'Hacklet' and latest news about hackaday.io
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Hackaday.io Project

lutetiumLutetium

11.7k
58
8
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Building a freeform 20th anniversary clone of @tedyapo’s LED clock, driven with a PIC16F84A
Project Owner Contributor

Ted’s LED Clock

paul-gallagherPaul Gallagher

10.9k
1.2k
2
29
Converted a Sieg micro manual milling machine to CNC with a Raspberry Pi and pololu. No other ucontroller used.
Project Owner Contributor

Raspberry Pi CNC Milling Machine

marcell-marosvolgyimarcell marosvolgyi

4.6k
2.4k
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A Raspberry Pi inside of a GameBoy retaining as much of the case as possible and using
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Raspberry Pi Gameboy Utilizing Cartridges

daniel-johnsonDaniel Johnson

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1.2k
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19
Read/write access to floppy drives for storage, the oldschool way.
Project Owner Contributor

Arduino General Purpose Floppy Driver

stian-sorengStian Soreng

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This was created to be a 4H project. The kids would learn to program, understand what a PWM signal was and how to solder
Project Owner Contributor

Analog meter Arduino Clock

hamblinjoehamblin.joe

1.5k
1.5k
6
17
To celebrate 1000 subs on my YouTube Channel, I designed a custom YouTube Play Button.
Project Owner Contributor

Arduino YouTube Play Button

sean-hodginsSean Hodgins

1.4k
17
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A low-cost and accurate tool for analyzing the power consumption of ultra-low power and IoT devices with rapidly changing current usage
Project Owner Contributor

MetaShunt: High Dynamic Range Current Measurement

jake-wachlinJake Wachlin

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My Raspberry Pi suddenly started getting slow. I thought we must be running out of RAM/CPU capacity, and so this monitor was born.
Project Owner Contributor

Raspberry Pi Vital Monitor Via OLED

jayraj-desaiJayraj Desai

311
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Assisting speech requests through touch enhances communication and inclusiveness for those in need.
Project Owner Contributor

Empower speech with AssistiveTech

timTim

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