[Damcave] decided to try out some bar code reader projects. He got his hands on a CueCat years ago. The problem is that it outputs encrypted character sets instead of a clear text string. To get ar… ...

Proving that astrophotography doesn’t have to break the bank, [Gerald Gattringer] has recently documented his DIY “barn door” style star tracker which is built almost entirely fro… ...

Each Bar absorbs approximately 60-65mA at 12V. Here three such LED light bars (one Red, one Green and one blue) are used to complete the circuit. Use a standard 9V battery to power the arduino board, ...

I was recently provided a copy of Environmental Monitoring with Arduino to review and it doesn’t disappoint in keeping the idea train ... the LED bar graph uses 10 pins on the Arduino, ...