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VAB-03 Released : How Do LRAs Work?

  • 3 July 2015
    • VAB-03 : How Do LRAs Work?
Video Application Bulletin 03 rounds off our introductions to our 3 most popular product lines by covering Linear Resonant Actuators. We appreciate LRAs are a more difficult concept than ERMs, so hopefully this video should address some of the most common questions. The video is embedded below, but for our email subscribers you can access the video on precisionmicrodrives.com here, or directly on our Vimeo page. Remember, the video acts as a quick overview - so you may have…

Gravity Light's Unique Use of Motors to Create Lamps

  • 16 June 2015
    • Gravity Light generates fuel-free lighting
The Concept Recently we were contacted by the GravityLight™ team regarding a very interesting project they are working on, an alternative to kerosene lamps that is powered only by gravity. Kerosene lamps are still commonly used in the developing world, despite the numerous financial and environmental repercussions. The concept of the GravityLight is elegantly simple. A weight is manually raised and as it falls it turns the shaft of an electric motor via a gearbox, creating a voltage across…

Design Guidance for Haptic Wearables

  • 3 June 2015
    • Haptic wearables are becoming increasingly popular
We’re seeing a great number of startups and early projects looking for design advice. In part this is thanks to advancements and cost reduction in 3D printing, but also the general adoption of crowdfunding has provided small companies and individuals with more opportunity to get their idea off the ground. The barriers to developing a working prototype are lower than ever. This has also coupled with a rise in the wearables market, in part thanks to low power bluetooth…

VAB-02 Released : How Do Vibration Motors Work?

  • 27 May 2015
    • VAB-02 : How Do Vibration Motors Work?
Our latest Video Application Bulletin looks at how eccentric rotating mass vibration motors work. It’s the type of application that really lends itself to animation, where we’re able to show you exactly how the motor’s movement creates a displacement. We also discuss what aspects of the ERM affect the vibration amplitude and the vibration frequency, including how to calculate them. It’s only a couple of minutes - you’re much better watching the video than reading a description of it!…

Quick LRA Debugging

  • 4 May 2015
    • Using an audio wave to drive an LRA
Email Subscribers: You may wish to view this post online to see all images and access the files (in a zip)! Intro Linear resonant actuators are more difficult than their DC motor based ERM counterparts. They should be driven with an AC signal at their resonant frequency, which is one of the reasons we recommend using a dedicated driver. However, adding in drivers can quickly make a system quite complicated - especially if using I2C to communicate. This introduces…

C08-001 Released New 8mm LRA Available

  • 30 July 2015
    • The 8mm LRA C08-001
At Precision Microdrives we are excited to announce our smallest linear resonant actuator to date, the C08-001. This LRA is only 8mm in diameter and just 3.2mm in height,…

306-009 Released : Direct replacement for 306-006 with improved mounting

  • 15 July 2015
    • The 306-009 Through-Hole Vibration Motor
The recently released 306-009 serves as a direct replacement to the depreciated 306-006. Using the same motor and mass, the 306-009 maintains the existing performance but offers improved mounting…

303-103 Released : Tiny Spring Terminal Vibration Motor Released

  • 30 June 2015
    • 303-103 Spring terminal vibration motor
The recently released 303-103 is a new 3mm vibration motor, featuring a rubber boot and spring terminals for easy mounting. Designed for applications where space is at a premium,…
  • 308-103 High Amplitude ERM Vibrating Motor
  • Product Release :: 308-103
  • New high amplitude eccentric rotating mass vibrating motor. Strongest sub-12mm vibration motor available!