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Projects Keri Szafir likes and follows

9.4k
652
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A different approach for a solar tracker, alternative movements, to be installed on the outside, to optimize the efficiency of solar panels
Project Owner Contributor

mysoltrk - a solar tracker, reinvented

my-solar-trackerMy Solar Tracker

3.3k
33
38
New developments in planetary position calculation applications and external PROM modules for PERSEUS-9.
Project Owner Contributor

PERSEUS-9 2023 Update

mitsuru-yamadaMitsuru Yamada

4.3k
28
18
This is the oldest PCB in my collection, acquired from a scrap sale at an old NASA test stand. What did it do?
Project Owner Contributor

Reverse Engineering an Apollo-Era Circuit Card

skyhawksonSkyhawkson

2.6k
23
31
Modern recreations of a 1898 21-segment display
Project Owner Contributor

SC-002

montemonte

4.2k
20
29
A smart cat bowl that uses facial recognition
Project Owner Contributor

Cat Bowl Monitor

joe-mattioniJoe Mattioni

8.1k
18
19
This is a 1/60 scale model of the Saturn V and Launcher - Umbilical Tower. This model is huge! I have been working on it for two years.
Project Owner Contributor

Apollo Saturn V and LUT

wglasfordwglasford

1.3k
17
19
This is an 8 bit vacuum tube computer I built using recycled 1950s Vacuum Tubes I found in Eastern Europe a few years ago.
Project Owner Contributor

Vacuum Tube Computer

mikeMike

1.1k
15
15
I build a model railway controller using analog PWM & block detection with manual and automatic control, and I evaluated the passing siding.
Project Owner Contributor

Model Railway Controller using Analog PWM

mitsuru-yamadaMitsuru Yamada

1.4k
15
18
An 8 line by 3 trunk telephone exchange
Project Owner Contributor

Mockingbird Telephone Exchange

stevesteve

2.1k
11
11
A vacuum tube computer without semiconductors, 4-bit Von Neumann, 4096 words core memory, graphics output
Project Owner Contributor

GLASNOST Vacuum Tube Computer

paul-kocylaPaul Kocyla

576
10
14
In this project, I convert a classic PCL86 single-ended tube amplifier design to operate with the less common PCL82 vacuum tube.
Project Owner Contributor

DIY PCL82 Tube Amplifier, Single-Ended

mircemkmircemk

1.6k
10
13
Just doing some restoration on vintage synthesizers
Project Owner Contributor

Synth Restoration

quinnQuinn

1.8k
9
11
Intel 4004 single board computer running calculator program, VTL interpreter, 8080 emulator, and so on
Project Owner Contributor

Intel 4004 Homebrew Computer

ryo-mukaiRyo Mukai

858
9
10
My entry to the 2024 business card contest, a big-muff guitar pedal in a business card form factor !
Project Owner Contributor

Party in the front, business in the back

chloe-chateauChloe CHATEAU

599
9
12
I'd like to build a teletype-style terminal using an Alphacom thermal printer and a decent keyboard that will work with any RC2014
Project Owner Contributor

MCU-less teletype terminal using Alphacom printer

shiela-dixonShiela Dixon

1.8k
5
6
This article presents an actual operation and internal circuitry of my own Digital Sampler in 1979.
Project Owner Contributor

Homebrew Digital Sampler in 1979

mitsuru-yamadaMitsuru Yamada

647
4
3
Utilizing a low cost electrophoresis high voltage supply and DMMs to test a rare Powertube for use in Fluke regulated power supplies.
Project Owner Contributor

Simple Vacuum Tube Tester

collin-matthewsCollin Matthews

312
3
5
An Arduino compatible board for Polish Makers
Project Owner Contributor

Polduino UNO

szymorszymor

964
2
2
My long journey to understanding the architecture and fixing what ended up being a trivial resistor failure.
Project Owner Contributor

Fixing a Fluke 412b High Voltage Supply

collin-matthewsCollin Matthews

68
1
3
Three different displays that use an uniform playlist definition language.
Project Owner Contributor

Desk Displays

jeroen-brinkmanJeroen Brinkman

102
1
2
A dynamic LED fox mask
Project Owner Contributor

Vulpine Visage

sky-guidedsky-guided

Going up?

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