If you are using a NEO M8N GPS module you might consider updating the firmware to get more sattelite constellations available. Of coure everything you do on your own risk – here is just a writeup of what worked for …

How to update NEO M8N firmware Read more »

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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 …

Measuring Nikon DSLR IR remote signal Read more »

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I am a proud new owner of a Nikon D3300 camera and yesterday while browsing the hackaday prize entries I found this project. It’s a pretty neat IR remote for a Nikon camera. And I even have some of those …

Another Arduino Nikon IR Remote Read more »

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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 …

Simplest battery / power indicator circuit Read more »

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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, …

Replacing potentiometer with up-down buttons on arduino Read more »

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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 …

Arduino capacitive sensor and the friction drum Read more »

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Step up converters

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 …

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

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During elementary and high school I was quite into model rocketry, building and launching a number of model rockets. Most of them were bulit around commercially available rocket motors. At that time some of my colleagues were building their own …

Testing digital altimeter for project Rocket 404 Read more »

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