I found this project a while back when I was searching for information on how to drive lavet stepper motor[1] inside these kind of clocks[2]. My project is sim

I found this project a while back when I was searching for information on how to drive lavet stepper motor[1] inside these kind of clocks[2]. My project is similar in a way that you have to manually drive this motor, idea is to convert existing 12-hour clock to 'week' 168-hour clock. Hour hand would make full rotation only each 168 hours, showing current day of the week and approximate part of the day. Very cool project to tinker with electronics and gears, you have to figure out timing(30ms energize, 970ms rest, repeat in reverse polarity) and how to drive motor(use half-bridge circuit or motor driver)[3], you have to deal with inductive 'kick' flyback voltage spikes and protect IC from it[4], and figure out mechanical gears[5] (typical quartz mechanism[6]) [1] https://en.wikipedia.org/wiki/Lavet-type_stepping_motor https://en.wikipedia.org/wiki/Lavet-type_stepping_motor [1.1] https://resonanceswavesandfields.blogspot.com/2011/03/understanding-quarz-analog-mechanical.html https://resonanceswavesandfields.blogspot.com/2011/03/unders... [1.2] https://resonanceswavesandfields.blogspot.com/2011/03/understanding-mechanical-clock-part-ii.html https://resonanceswavesandfields.blogspot.com/2011/03/unders... [1.3] http://mysite.du.edu/~jcalvert/tech/quartz.htm http://mysite.du.edu/~jcalvert/tech/quartz.htm [1.4] https://www.tablix.org/~avian/blog/archives/2016/04/clockwork_part_2/ https://www.tablix.org/~avian/blog/archives/2016/04/clockwor... [1.5] https://www.tablix.org/~avian/blog/archives/2016/03/clockwork/ https://www.tablix.org/~avian/blog/archives/2016/03/clockwor... [2] https://en.wikipedia.org/wiki/Quartz_clock https://en.wikipedia.org/wiki/Quartz_clock [3] https://en.wikipedia.org/wiki/H-bridge https://en.wikipedia.org/wiki/H-bridge [3.1] https://www.microtype.io/h-bridge-circuit-design/ https://www.microtype.io/h-bridge-circuit-design/ [3.2] http://homepage.divms.uiowa.edu/~jones/step/circuits.html http://homepage.divms.uiowa.edu/~jones/step/circuits.html [4] https://en.wikipedia.org/wiki/Flyback_diode https://en.wikipedia.org/wiki/Flyback_diode [4.1] https://pdfserv.maximintegrated.com/en/an/AN6307.pdf https://pdfserv.maximintegrated.com/en/an/AN6307.pdf [4.2] https://en.wikipedia.org/wiki/Snubber https://en.wikipedia.org/wiki/Snubber [5] https://ciechanow.ski/gears/ https://ciechanow.ski/gears/ [6] https://geargenerator.com/#68.75,675,25,30,1,3,513926.19999999995,12,1,12,3,4,20,0,0,0,0,0,0,0,48,12,4,20,0,0,0,0,0,1,1,8,2,4,20,0,0,0,0,0,2,0,60,15,4,20,0,0,0,0,0,3,1,8,2,4,20,0,0,0,0,0,4,0,60,15,4,20,0,0,0,0,0,5,1,8,2,4,20,0,0,0,0,0,6,0,64,16,4,20,0,0,0,0,0,7,1,16,4,4,20,0,0,0,0,0,8,0,32,8,4,20,0,0,0,0,0,9,1,8,2,4,20,0,0,0,0,0,10,0,48,12,4,20,0,0,0,0,0,0,1,3,-432 https://geargenerator.com/#68.75,675,25,30,1,3,513926.199999...