This will be the base paper of the Post-it Note Holder. Score the rectangle at 3 ½, 4 and 4 ½ inches. At ¾ inch in from each side, cut a straight line across the score lines. This notch is for ...

Remember the Great Toilet Paper Crisis of 2020 ... His 3D printed roll holder has a Hall effect sensor that counts revolutions of the roll and sends it to a NodeMCU. The number of sheets per ...