A mechanical binary counter

                <a href="https://dmania.lol/post/bitius/a-mechanical-binary-counter-zg1hbmlh-f4nx1">
                  <img src="https://s3-eu-west-1.amazonaws.com/dmania-images/9wg8l2e9hs-00001.jpg">
                </a>
                <h3><a href="https://dmania.lol/post/bitius/a-mechanical-binary-counter-zg1hbmlh-f4nx1">Watch video on dMania</a></h3>
                <a href="https://dmania.lol">
                  <img src="https://dmania.lol/assets/img/dmania_steemit_post.png">
                </a>