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A nice, compact 5mW green laser. Fun, but don't point in anyone's eyes.
Give your project a voice, and more than just pre-recorded messages on loop! The EMIC 2 takes a serial string and turns it into synthesized voice.
Excellent for building a portable project with a single LiPoly, and recharge it from microUSB!
Here's the official Arduino Ethernet Shield With PoE Module
This is a speed sensor, designed to check the rate of a motor.
Compact, inexpensive, and LASER. Enough said.
OLEDs are simply the next step up in display technology. Sure, a regular LCD may work, but you should use OLEDs when you need a much brighter display, much better viewing angle and lower current consumption!
Think of this as a audio robotic digestive system. It'll eat 20 whole seconds of sound before barking it back at you with beautiful clarity, maybe not exactly as you remember it but pretty close!
4-channel relay control board with optical isolation.
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