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Projects Johan Carlsson likes and follows

15.2k
7.3k
31
Interfacing 3.5" HD 1.44 MB Floppy drive through FDD connector with Arduino UNO
Project Owner Contributor

Arduino raw data 3.5" Floppy reader

lukas-vacekLukas Vacek

31.9k
2.9k
193
Environmental sensing for everyone.
Project Owner Contributor

FieldKit

shah-selbeShah Selbe

9k
2.2k
26
A joule thief powered by an easy-to-make aluminium air cell.
Project Owner Contributor

Aluminium powered joule thief

willstevenswill.stevens

1.6k
1.4k
20
A SAW stabilized UHF transmitter for audio
Project Owner Contributor

Ultrastable microsized Audio transmitter spy bug

tomTom

4k
886
24
Modern security and cryptography call for a source of true-random numbers. This design creates them from thermal noise in a resistor.
Project Owner Contributor

True-Random Number Generator

tom-andersonTom Anderson

17.6k
249
173
Biomedical Imaging project using AC currents.
Project Owner Contributor

Spectra: Open Biomedical Imaging

jeanjean

5.3k
220
134
[ an open-access peer-reviewed journal ]
Project Owner Contributor

Hackaday Journal of What You Don't Know

aleksandar-bradicAleksandar Bradic

2.9k
201
17
Convert your Raspberry Pi in a smart remote control with the open source hardware ANAVI Infrared pHAT
Project Owner Contributor

ANAVI Infrared pHAT

leon-anaviLeon Anavi

2.3k
136
3
Communicate between Internet of Things projects with Blynk Bridge
Project Owner Contributor

Blynk Bridge tutorial with ESP8266

geekstipsgeekstips

9.4k
99
84
A little UHF transmitter can be located with a directional antenna.
Project Owner Contributor

Tiny Low-Tech tracking transmitter

tomTom

15.8k
69
53
Always wanted to have Msps ADCs on a Raspberry ... Let's dig into it.
Project Owner Contributor

20Msps+ ADC RaspberryPi HAT

kelu124kelu124

24.9k
69
63
A flexible power supply for Nixie tubes. Input voltage can be from 3V to 12V. Output up to 200V. It uses commercially available transformers
Project Owner Contributor

Nixie Tube Power Supply

paul-andrewsPaul Andrews

10.5k
60
56
If you have a lot of time, you can decide your position on Earth just using watches and eyes. Or RTC and LDR.
Project Owner Contributor

Light level geolocator

jaromirsukubajaromir.sukuba

18.8k
49
37
A small and inexpensive kiln for melting metals and firing clay
Project Owner Contributor

RepKiln

matt-mosesMatt Moses

9.1k
48
50
Experimental PCB single layer transformer - proof of concept
Project Owner Contributor

PCB coil joule thief

bobriciusbobricius

15
7
Using an SDR, noise source and SWR bridge to create an antenna and filter analyzer.
Project Owner Contributor

SDR Based Antenna and Filter Analyzer

scott-braggScott Bragg

1.4k
15
13
The FPGA uses a custom floating point to implement integrators, and all the arithmetic necessary to solve ODE under ARM9 HPS control.
Project Owner Contributor

FPGA, Floating Point, differential equation solve

bruce-landBruce Land

5.3k
10
8
Using a microphone in speaker cabinet as feed-forward, to extend low frequency range of audio system
Project Owner Contributor

Feedbass! (microphone in loudspeaker)

deepsoicDeepSOIC

752
7
6
This is a remix of https://hackaday.io/project/28550-light-level-geolocator
Project Owner Contributor

Daylight Geolocator Remix

agpcooperagp.cooper

282
6
5
A wind-up device to replace primary cell batteries
Project Owner Contributor

Wind up battery

farrellsegallfarrell.segall

430
2
2
A dual analog SMPS using components that the average maker is likely to have lying around
Project Owner Contributor

Electric Heart

jakob-wulfkindJakob Wulfkind

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