In that project a microcontroller nxp lpc845 arm cortex m0 is driving 8 stepper motors one clock uses two motors each individually controlled.
Wall clock stepper motor.
The 28byj48 produces 32 steps per full motor revolution.
Because the motors are special 360 motors the zero position is determined with a magnet and a hall sensor for each hand.
For those familiar with arduino programming and shields you can find help programming stepper motors here.
4 3 out of 5 stars 2 492.
To adjust the timekeeping you might have to tweak the delay time a little according to the motor variability.
Although the stepper claimed to have a 1 64 reduction gear the actual ratio wasn t that precise.
You can drive a clock with a stepping motor prank to somebody.
Include hands quartz diy wall clock movement mechanism battery operated diy repair parts replacement.
The only changes necessary in the stepper motor control files is to change the delay time in the loop function.
1 16 of over 1 000 results for wall clock motors amazon s choice for wall clock motors.
Get it as soon as sat sep 26.
Free shipping on your first order shipped by amazon.
Stepping motor is 2 phase ac generator.
Using a serial connection the clock can be configured.
Owing to bad stepper mode specs the original version of the clock was gaining time overnight.
Its output shaft is geared to yield 512 or 513 depending on source steps per revolution.
Clock component running by stepping motor.
For the minute motor start with a delay of about 1800 and for the hour motor use a delay of about 21600.
For the time being ignore the section of the schematic labeled ir circuitry.
Finally 6 push buttons can be used to adjust the rtc and run the mechanical clock fast forward or fast reverse.