Stepper Motor Door Lock

The advantage of a servo motor over a stepper motor or dc motor is that they provide feedback so they can return to specific locations with great accuracy. There are no brushes in a stepper motor. At rest a stepper motor will have full torque as long as the coils are energised.

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This operation can be used to actuate a door lock or a latch to enable you to remotely lock and unlock a door or gate.

Stepper motor door lock.

Providing the motor is appropriately sized and you can provide it with power then the motor will be locked in position without the need for a separate brake. One with permanent magnet rotor and one without permanent magnet. The servo motors we offer can rotate between 0 180 degrees. Unlike brushless motors applying power to a stepper motor will not make it turn.

A 1 ms pulse width will position the motor to the extreme left 0 a 2 ms pulse width will position the motor to the extreme right 180 and a 1 5 ms pulse width will position the motor in between these two extremes 90. Stepper motor door lock the system we did had a custom board that interfaced to a pc104 bus on a single board computer. After doing some market research we realized that low cost high functioning electronic servo locks were scarce. The project is able to turn on from the switch read the rfid card using the scanner send a signal to the stepper motor and have the stepper motor turn to unlock the door.

Stepper motors are brushless dc motors with many internal teeth that magnetically lock into position with surrounding copper coils. I tried to lock my steppers in ugs with 1 255 for a bit change. Is 1 255 suppose to lock steppers or should i use m6 how do i unlock steppers if i what to release them from m6 or 1 255. This magnetically locks the rotor in the position shown because unlike poles attract.

So in reading i entered m6 into command line and motors locked. A short time later 3 seconds for this case the stepper motor moves again to move the rack and pinion system and lock the door. Therefore this will. It could control up to 8 doors with associated sensors rfid readers and keypads.

Well that didn t go well the spindle moved when changing bit in fact i could move all axis s. Instead it locks into a position specified by the inputs given and turns either clockwise or counterclockwise by a small step. In step 3 phase b is turned off and phase a is turned on but with the polarity reversed from step 1. When phase a is turned off and phase b is turned on the rotor rotates 90 clockwise.

The free rotation of the shaft depends on whether if it is. There are two types of stepper motors.

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