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.

Olympia Circuits Teases Arduino Programmers With $60 Arno Shield by Ray Willington — Monday, April 29, 2013, 05:50 PM EDT Comments ...

The machine uses a ‘grbl’ controller, which has an Arduino-based circuit that includes multiple outputs, including a powerful 24V pwm signal that is generally used to drive a 60-80W spindle motor.

PCB Direct Virtual Breadboard Creates Circuits For Arduino, RasPI, ARM And More 9:54 am January 12, 2015 By Julian Horsey ...

The opto isolator, isolates the mains/line voltage from the Raspberry Pi and is the safest way to detect AC voltage using a Raspberry Pi since the Pi is never in contact with the high AC voltage. The ...

The opto isolator, isolates the mains/line voltage from the Raspberry Pi and is the safest way to detect AC voltage using a Raspberry Pi since the Pi is never in contact with the high AC voltage. The ...