Category: Electronics

Nikon 1 J1 10-30mm lens error

I recently got a Nikon 1 J1 mirroless exchangable lens camera at a great price 🙂 Well actually the price was low because the kit lens (10-30mm) it came with were broken, displaying an error… The annoying lens error “popup”

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Measuring Nikon DSLR IR remote signal

I just got a Nikon ML-3 equivalent IR remote for remote controlling my Nikon D3300 camera. I recently also wrote the Arduino Nikon IR remote sketch and I figured why not do some reverse engineering on the “original” remote. I

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Accessing Beaglebone serial port while using a cape – DIY low profile pin header connector

I am currently using BeagleBoneBlack for logging some data. The system is designed to work autonomously so normally no wired or wireless connection is available. For testing purposes however diagnostic data can be output to the serial port of the

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A try at a Hammond XB2 repair

Matevž brought me a new organ to try to repair – Hammond XB2 🙂 It was lent to him by the original owner to decide whether to buy it or not. Here is a sample of how it sounded (not

Simplest battery / power indicator circuit

So we usually want to have a battery indicator circuit in many of our devices. The indicator warns us if we have left the device powered and also indicates if the device battery is reaching its end of life. The

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Repairing a Viscount Organ

I recently helped Andrej from Emšo Blues Band to repair his Viscount organ. Well, actually he did all the work, I just gave him some tips to figure out how the problematic chorus / vibrato section of the organ works.

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Replacing potentiometer with up-down buttons on arduino

Sometimes you want an arduino application to be controlled either by a potentiometer (eg. joystick) or by a keypad. Here is a simple resistor circuit that uses two keys and mimicks a potentiometer in three different states – middle position,

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Arduino capacitive sensor and the friction drum

I recently cut out a capacitive sensor on my old CNC machine for a friend working at the university. They plan to connect the sensor to Raspberry PI and try to make a virtual friction drum. The sensor is pretty

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Cheap ebay boost module comparison and performances – 5V from one or two batteries

You ever wanted to supply the 5V voltage to your arduino / electronics project, but didn’t have enough space for 4 or even 6 batteries that are needed to get the correct input voltage? With those cheap (USD 1-2) ebay

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Repairing Crumar Organizer electronic organ

Some time ago a friend of mine brought me a Crumar Organizer electronic organ to repair. If you understand slovenian language you can check a few of his post regarding the repair here. Lol, actually this is not really a

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