How to Control Multiple Vibrating Motors for Timed Intervals?

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SUMMARY

This discussion focuses on controlling multiple vibrating motors, specifically small DC motors similar to those used in mobile phones, powered by a 1.5V AAA battery. The user, Alex, seeks to activate 20 identical motors for 2 seconds every 15 minutes over an 8-hour period. It is established that a single transistor can be used to control the on/off state of the motors, which draw approximately 85 mA at a 3V supply. This solution provides a straightforward approach to managing multiple motors simultaneously.

PREREQUISITES
  • Basic understanding of electronics, specifically transistor operation.
  • Familiarity with DC motor specifications and power requirements.
  • Knowledge of circuit design for controlling multiple outputs.
  • Experience with timing circuits or microcontrollers for interval control.
NEXT STEPS
  • Research how to use a transistor as a switch for DC motors.
  • Learn about microcontroller programming for timed motor control, such as Arduino.
  • Explore circuit design for parallel connections of multiple motors.
  • Investigate power supply considerations for driving multiple motors simultaneously.
USEFUL FOR

This discussion is beneficial for biology students, hobbyists in electronics, and anyone interested in controlling multiple small motors for timed applications.

alexmuntz
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Hello,

I am a biology student working on my masters and i have to control a small vibrating motor (like http://www.alibaba.com/product-gs/51129609/dc_micro_motor_vibration_motor_small.html) and have no experience with electronics and such.
i would like the motor to vibrate for a couple of seconds, every 15mins, over the period of 8 hours let's say… the motor is very much like those found in mobile phones. it’s powered by one AAA 1.5V battery.

What do I need to connect it to, in order to control it this way?
second deal: i need to control 20 identical motors at the same time, in the same way..

id be glad to know at least what i need, the devices and maybe ressources to get me further.

Thank you for your time!

Alex
 
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Nothing fancy, just turn the DC supply voltage on/off.

These motors draw about 85 ma at 3V supply. You may be able to drive it with a single transistor.
 

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