Tag Archives: circuits

A duck. A cat. A rooster. Your mom. Quick, remember those four items and hold that thought. You’re going to need a sharp memory for building and playing this sweet memory game that you can build yourself, sans Arduino. It uses a Picaxe microcontroller, ensuring a headache of assembly-based program for all involved. The outcome does sound pretty rewarding though: ...

For those of you in high school or college, I just made your day. This little device, found on Instructables, emits a 17KHz high-pitched tone that’s undetectable to most people over the age of 30. It sounds similar to a ‘mosquito’ ringtone on a cellphone and will drive your classmates and/or teacher NUTS. Just rig up the circuitry and the ...