Recently, we published an entry-level Arduino project with a single seven-segment LED display. Although it’s an amazing DIY project, we noted that most of the readers are looking for more advanced ...

And honestly, a cheaper hobby to get into. With small Arduino boards becoming more popular, Olympia Circuits is jumping into the mix with the Arno Shield.

HB (high-brightness) LEDs require a large amount of current to operate. When driving HB LEDs from a voltage source, you can set the required current with a suitable series resistor. If the voltage ...

Circuits are designed on Fritzing software which is open source and you can design perfectly the Arduino experiments and export the circuits in formats like PCB layout, Fritzing format etc.

Show full PR text Olympia Circuits announces the Arno Shield Olympia, WA, April 29, 2013– Olympia Circuits introduces the Arno Shield to expand their line of products for new Arduino users.

The Arduino then controls the state of the LED using the active high enable line from the column multiplexer chip. [Alex] wanted more than just a static image to show off on his new display, so he ...

Calculating the appropriate resistor values for a photocoupler isn’t complicated, but some basic min/max considerations must be acknowledged in when doing the analysis.