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 »

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 »

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 »

I am currently playing with some GPS receivers and video capture. The problem I had is that even as the recording was in progress the  laptop shut down to conserve power. I know that I can change the sleep / …

Making your computer not go to sleep or turn on the screen saver Read more »

Cirrus project is led by a group of young enthusiast from Slovenian high schools and universities who are aiming to reach the space barrier with an amateur rocket. I am happy to be a part of the team 🙂 This …

Cirrus project aiming to reach space with amateur rocket Read more »

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 »

Today I spent quite some time figuring out how to set up a batch script to run before a bulid in a CooCox IDE. The script I wrote was to automatically change the bulid number of a program I am …

Correctly setting up prebulid batch script in CooCox Read more »

Have you ever had the need to connect multiple programs that utilize serial ports? Or you tried to stream the data from single GPS device to multiple programs that needed the data? Then either you found out it can’t easily …

Connecting multiple virtual serial ports together Read more »