I created a digital version of the Flippy Do that I can project for students to see. It also does the math for me in case I’m not paying enough attention to the addition while teaching.
This updated version is easier to use with only a mouse. Clicking on the check boxes toggles 0 to 1. The reset button clears the number.
This updated version includes a guide to help convert decimal numbers into binary numbers as well. In the right panel, enter the decimal number you would like to convert, then click check boxes to see the decimal number decrease as the binary number increases.