Come up with a simple application for switches and LED circuits.
How does drawing or mark making translate to pulses of light?
Materials & Tools
Book Board or Cardboard
Heavy Card Stock
1 220 Ohms Resistor
Female-to-Male Jumper Wires
Power for the Arduino (I used my laptop via USB)
While okay for this small, temporary project, tape does not provide a secure enough bond to withstand repeated poking. For the next iteration, also find a replacement for the foil; it sounds cheap, which of course this is!