bapril / osc_clock

A stepper driven clock controlled by OSC.

OSC_Clock

A stepper-driven clock controlled by OSC. This was created for a production of Rodgers and Hammerstein's Cinderella. It never made the stage because as it always does, time ran out.

Parts

• CPU: NodeMCU 12E
• Stepper Driver: DRV8825 (https://www.pololu.com/product/2133)
• RTC: DS3231 (https://www.adafruit.com/product/5188)
• Stepper: NEMA 17 1.8 degree
• Frame/gears: Laser-cut parts
• Hardware:
  • 12x 3mm x 30mm hex head screws.
  • 12x 3mm nyloc nuts.
  • 3x 608z ball bearings
  • 40+mm of 8mm Al tube.
  • 30+mm of 5mm fiberglass rod.
• IR LED + IR detector

OSC commands

• /clock/home - advance the clock hands to the "home" position as detected by the optical sensor.
• /clock/stop - stop the clock
• /clock/now - advance the hands to the current time as set in the RTC.
• /clock/run - Run as a clock, keep in sync with the RTC time.
• /clock/gear $gear - change the virtual gearing of the stepper. options (1,2,4,6,16,32)
• /rtc/set - TBD
• /rtc/get - TBD