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Johan von Konow

Johan von Konow

– my projects

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  • Selected Projects
    • Leet AI – Wireless Synthesizer Ensemble with AI-powered inspiration
    • ChipChamp
    • LED tiles
    • SokoDay – addictive sokoban game
    • LEET modular – a multifunctional Eurorack module
    • LEET Synthesizer
      • LEET Synthesizer
      • LEET Keyboard
      • LEET Pad
      • LEET Chord
      • LEET Control8
      • LEET Control
      • LEET Arpeggiator
      • LEET Sequencer
      • LEET Linux
    • 3DPCBoy – handheld gaming platform
    • 3DPCB Wi-Fi Ducky
    • Cardiac – Paper computer from 1968
    • 3DPCB Keyboard
    • Colourful Connected Clock
    • My First Brainfuck computer
    • 3D printed Arduino case
    • Nanino – the DIY friendly Arduino PCB
    • Developing 3DPCB
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Category: Repair

Posted on 2019/10/142019/10/14

Repairing noise canceling Bose headphones

Repair guide for broken noise canceling Bose QuietComfort 25 headphones.

Posted on 2013/05/212013/05/21

Fixing broken LED light bulbs

How to turn three broken LED lamps into two working ones…

Posted on 2012/08/082017/06/06

Bringing a 12 year old Roland MDX-20 up to date

How to add: USB connection, FTDI drivers and a new postprocessor to a low cost CNC mill (Roland MDX-15 / MDX-20).

Posted on 2012/02/232012/02/23

Repairing a broken AirPort Express

How to fix an AirPort Express Base Station that does not power up.

I added a 5V power adapter and a 3.3V LDO instead of the broken power unit.

Posted on 2011/12/222012/02/16

Using a Sony Ericsson dock as an USB2Serial adapter

Getting serial connection (5v RS232) from a USB SEMC DSS-20 SyncStation.

Guide for: Disassembly, Attaching serial communication cables, Remove serial EEPROM to avoid custom drivers for the FTDI232 chip.

Posted on 2011/12/032012/02/16

Repairing a broken Samsung TV

How to fix a Samsung le40s71b that does not power up.

Hint – replace the broken capacitors ;)

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