Category Archives: uln2003

No Need to Watch Your Tea, This Robot Does It For You

For anyone who’s ever had to make their own tea, steeping it for the right amount of time can be a pain. That’s precisely the problem that the automatic tea brewing robot solves with its painless approach to brewing tea, built by Slovenian electrical engineering student [Kristjan Berce].

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Posted in 2019 Hackaday Prize, 35BYJ46, Arduino Hacks, automated tea, classic hacks, Hackaday Prize, stepper motor, The Hackaday Prize, uln2003 | Leave a comment

Touch-A-Sketch Gives an Old Toy a New Twist

After nearly 60 years and a lot of stairs and squares, there is finally an easier way to draw on an Etch A Sketch®. For their final project in embedded microcontroller class, [Serena, Francis, and Alejandro] implemented a motor-driven solution that takes input from a touch screen.

Curves are a breeze to draw with a stylus instead of joysticks, but it’s still a 2-D plotter and must be treated as such. The Touch-A-Sketch system relies on the toy’s stylus starting in the lower left hand corner, so all masterpieces must begin at (0,0) on the knobs and the touch screen. …read more

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Posted in Microcontrollers, pic32, stepper motor, touch screen, uln2003 | Leave a comment