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Steven J Greenfield

ET, EET, CET and an information sponge

Lacey, WA
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3 Followers
2 Following
6 Projects
21 Likes
steven-j-greenfield
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This user joined on 08/16/2014.

2.1k
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Two 555 timers turn capacitance into an analog voltage readable on a DMM. With a modern 600.00mV scale, that is readable to 10e-11F.
Project Owner Contributor

Dual TLC555 Capacitance Meter 0.1pF Resolution

steven-j-greenfieldSteven J Greenfield

471
4
1
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Recreating a 555 timer based Class D PWM amplifier I first built in the '80s.
Project Owner Contributor

Class D Amplifier TLC555 Timer Based PWM Audio Amp

steven-j-greenfieldSteven J Greenfield

197
6
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3
Using two 555 timers to drive a pulse reverse electroplating/electroetching bath.
Project Owner Contributor

Pulse Reverse Electroplating/Electroetching 555

steven-j-greenfieldSteven J Greenfield

455
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2
A simple remote level sensor that only requires two wires to provide power to the sensor and send the signal back to a microcontroller.
Project Owner Contributor

Remote Continuous Liquid Level Sensor 555 Timer

steven-j-greenfieldSteven J Greenfield

1
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Measures belt tension for 3D printers and CNC machines
Project Owner Contributor

3D printer/CNC belt tension measurement

steven-j-greenfieldSteven J Greenfield

184
1
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Just a fun Tesla-punk kissing meter. A couple each hold a copper handle and kiss. Large meter, huge vacuum tube, arcs and sparks.
Project Owner Contributor

Relationship Meter

steven-j-greenfieldSteven J Greenfield

53.4k
421
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7 segment clock
Project Owner Contributor

EPTAORA

ekaggrat-singh-kalsiekaggrat singh kalsi

44.6k
291
9
269
A rugged cyberdeck with network hub and SDR
Project Owner Contributor

Cyberdeck1

cyzooniccyzoonic

34.8k
108
36
101
A DIY oscilloscope probe to dig small differential signals embedded in high common mode voltages.
Project Owner Contributor

A 10X 100MHz Differential Probe

bud-bennettBud Bennett

34.8k
203
22
170
100 MSps 2ch oscilloscope based on Raspberry Pi Pico
Project Owner Contributor

RPScope

jgpeirojgpeiro

27.6k
256
2
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Design, development and build of an open-sourced SLS 3D Printer suitable for hobby users.
Project Owner Contributor

SLS4All - Affordable SLS 3D Printer

tomas-starekTomas Starek

17.9k
213
14
154
A touchscreen control panel for Grbl controllers with MPG handwheel and hardware inputs.
Project Owner Contributor

Touchscreen Control Panel for Grbl

uriah-liggettUriah Liggett

8.6k
207
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A lost art, that few can still use, and guard viciously as a company secret.
Project Owner Contributor

Universal Coil winding Machine

brettBrett

8.3k
54
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An open source LC-Meter, which is very accurate and easy to build. All the documentation included.
Project Owner Contributor

build an LC Meter

core-weavercore weaver

8k
1.8k
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65
EBM - 3D Metal & Ceramic Printer - Electron Beam Melting
Project Owner Contributor

3D Metal & Ceramic Printer

agustin-cruzAgustin Cruz

8k
54
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Replace your old 78xx voltage regulators with this much more efficient pin-compatible buck converter.
Project Owner Contributor

78xx Replacement

stefan-wagnerStefan Wagner

4.6k
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A simple replica of the tesla gun from one of my favorite shows. My first project, hoping to get it light up in different brightness levels.
Project Owner Contributor

Warehouse 13 Tesla Gun

melissa-matosMelissa Matos

3.9k
23
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The filaments used in "vintage" Edison type light bulbs are readily available and can be used to make 7 segment displays.
Project Owner Contributor

Using LED filaments to make a digital clock

jay-hamlinJay Hamlin

3.4k
38
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An open project to bring new functionalities to vintage phones with the nice old rotary, keeping their fascinating vintage style alive.
Project Owner Contributor

Vintagephone - old rotary phone retrofitting

giulio-ponsGiulio Pons

3k
8
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A Star Trek away mission themed escape room in a box.
Project Owner Contributor

Star Trek Shuttle Console

rubenfixitRubenFixit

2.2k
15
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<$10. <10μm repeatable. >10kg capacity. Laser-cut 1/8" hardboard. For 100mm x 6mm rod, but semi-parametric. Handwheel or stepper drive. CAD.
Project Owner Contributor

A Cheap Compact Linear Slide

paul-mcclayPaul McClay

995
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This is based on DIY NanoDrop spectrometer design available on Hackteria
Project Owner Contributor

DIY Millivolume spectrophotometer

brainybaboonBrainy.Baboon

742
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A rugged laptop that will survive fieldwork. Cold, rain, dust. Everything in the environment that I dislike, but sometimes have to cope with
Project Owner Contributor

Field Computer

cees-meijerCees Meijer

663
634
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Two 555 timers and oscilloscope X-Y mode to generate animated art
Project Owner Contributor

Oscilloscope Art using 555 Timers

ted-friedTed Fried

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AVR wrote 10/06/2016 at 05:48 • point

thanks for the follow on my ESP32 lib, I'm quite jazzed at the attentiion its been getting, open source FTW

  Are you sure? yes | no

Steven J Greenfield wrote 08/16/2014 at 19:33 • point
Very much an electronics person. Learning to program.

  Are you sure? yes | no

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