https://www.buildsteam.com/home daily 1.0 2016-05-22 https://www.buildsteam.com/home/4-bit-binary-adder monthly 0.5 2016-05-13 https://images.squarespace-cdn.com/content/v1/551f1df3e4b0562b851f0284/1463103241405-ERGVSHGYKNPQ12LHAL3T/image-asset.jpeg Home - 4 Bit Binary Adder up to 15 + 15 Here, the three of the dark handle levers are pulled back. The 8, 4, and 2 are back so the first number to be added is 8+4+2 = 14. Notice 3 carries have advanced a quarter turn. Two are tow balls above the 4 and 8, and the third is the 16 bit indicator that turned 1/4 turn. The half pins in the back show the first number entered is 14. The half pins are up on 8, 4, and 2 and zero on the other places. https://images.squarespace-cdn.com/content/v1/551f1df3e4b0562b851f0284/1463103308103-SOL32V9N2X6BEN24YXZ8/image-asset.jpeg Home - 4 Bit Binary Adder up to 15 + 15 Just to show what it would look like if three of the light handle levers are pulled back. The 8, 2, and 1 are back so the second number to be added is 8+2+1 = 11. Notice 3 carries have advanced a quarter turn. Two are tow balls above the 2 and 4, and the third is the 16 bit indicator that turned 1/4 turn. No carries have taken place yet. The half pins in the back show the second number entered is 11. The half pins are up on 8, 2, and 1 and zero on the other places. https://images.squarespace-cdn.com/content/v1/551f1df3e4b0562b851f0284/1463103389844-0GJ03BADL9IT10Z3BECT/Binary+Adder+14+%2B+11+%3D+25.jpg Home - 4 Bit Binary Adder up to 15 + 15 This is what it looks like when both 14 and 11 have been added. The carries have automatically completed and the result shows in the back. The half pin is up on the 16, 8, and 1. All these bits are set so the result is 16+8+1 = 25. The half pins are down over the 4 and 2 so those bits are set to zero and aren't counted in the sum. https://images.squarespace-cdn.com/content/v1/551f1df3e4b0562b851f0284/1463103159360-KEI8V1C85USSHP8BYYZ4/image-asset.jpeg Home - 4 Bit Binary Adder up to 15 + 15 Here the binary adder is set to all zeros. The four dark handle levers (to the left of the numbers) are pushed forward. The four light handle levers (to the right of the numbers) are also pushed forward. In the back, the four tow balls are pointing up and away so it will take two 1/4 turns to activate a carry in the next binary place. https://www.buildsteam.com/home/video-equation-of-time monthly 0.5 2016-05-14 https://www.buildsteam.com/home/article-published-in-horological-science-newsletter monthly 0.5 2016-05-05 https://www.buildsteam.com/home/great-thoughts-about-sharing monthly 0.5 2016-05-05 https://www.buildsteam.com/home/introduction-to-the-lego-astronomical-clock monthly 0.5 2016-04-25 https://www.buildsteam.com/home/building-with-limited-resources monthly 0.5 2016-07-03 https://images.squarespace-cdn.com/content/v1/551f1df3e4b0562b851f0284/1461041862310-8SZBK1YF661CHH4KTBCE/image-asset.png Home - Building with Limited Resources https://images.squarespace-cdn.com/content/v1/551f1df3e4b0562b851f0284/1461208678253-65LJHUS2CLQJJM7W6OSK/image-asset.png Home - Building with Limited Resources https://www.buildsteam.com/home/friction-part-ii-cantilever-and-supports monthly 0.5 2016-07-03 https://images.squarespace-cdn.com/content/v1/551f1df3e4b0562b851f0284/1461044404979-6Q9HUTFNWYXEPQ4ZVSWQ/image-asset.jpeg Home - 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