Arduino keypad with 1 Analog pin

Here is my circuit design for Arduino keypad, using only 1 analog pin (instead of 7 serial pins), 6 resistors (can be reduced to 5) and 1 capacitor: And now for the full story: I decided it’s time to add a keypad to my Arduino playground. Usually, those simple keypads come with 7 pins (actually 9, […]

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My Robotics Adventures.

So, I bought myself this Robotic Arm Kit (similar to this) from China, since I thought it will be a nice thing to play with. Unfortunately, I didn’t notice the ‘Kit’ part in the name, and surely enough, the parts arrived disassembled. Alas – they also arrived without any documentation. After some googling, I found […]

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