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Descrição
3D printed ball clock
The clock is based on a design from the ’70s by Harley Mayenschein, using marbles on three different rails to give a readout and to track time. Although my design is more optimized to be smaller and uses an original lifting system using a bar mechanism. It is quite accurate, it has an error of 6 seconds in 24 hours In the following video the operation and assembly of the clock is explained: https://www.youtube.com/watch?v=r3Faj1h3iq4
BOM: Ø16mm steel balls - 30 units Bearing Ø5x10x4 - 6 units Steel Rod Ø5x50 - 3 units Steel Rod Ø4x25 - 1 units Steel Rod Ø6x250 - counter dams set screw M3x6 - 2 units Allen screw M3x16 - 15 units Allen screw M3x8 - 15 units Allen screw M3x20 - 2 units Allen screw M2.5x12 - 8 units Allen screw M2x6 - 2 units Allen screw M4x12 - 3 units Allen screw M4x10 - 4 units Allen screw M4x8 - 1 units Pin Ø5x16 - 10 units Countersunk head screw M3x16 - 7 units Nut M2 - 2 units Nut M3 - 20 units Nut M4 - 3 units 300x150x6.5mm wooden board Motor Nema 17 1.7A - 1 unit Driver DRV8825 - 1 unit Arduino pro mini - 1 unit Charging port - 1 unit
Upgrade 8-3-2021: The electronic schematic and the arduino program are added
Update 19-3-2021: part73b is added with the text of the hours in English "HOURS"
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