## Vibrating Christmas Tree Instructable from our London Engineering Team

Introduction Christmas time in Northern European countries is a time of rest, feasting for the cold months ahead, and spending time with family. For our readers with children, you’ll know all too well that keeping them busy and engaged is important. Also being engineers, Christmas

## How to Drive a Vibration Motor with Arduino and Genuino

Looking to drive a DC vibration motor using an Arduino or Genuino? In this article, you’ll find simple circuitry, suggestions on using Pulse Width Modulation (PWM), and example code to download. Microcontrollers are used with virtually every vibration motor application. Whilst some industrial applications may

## DC Motor Speed: Voltage and Torque Relationships

Something we have discussed in the past is how varying the voltage to a vibration motor can change the amplitude, particularly with reference to haptic feedback and playing different effects. However, something we haven’t explicitly shown is why this happens, or discussed it in the

## High Side Current Sensing for DC Motors

This blog post describes a simple and accurate way to measure the current in a DC motor circuit. Perhaps the most obvious method for measuring current is to use an ammeter. However should you wish to plot the current overtime on an oscilloscope or measure

## 5 Methods of Circuit Protection for Gearmotors Part 2

Note: this is the second of two posts, continuing on from this post. 3) Use a Current Shunt Monitor   Current shunt monitoring takes two forms – high side and low side current sensing. Each has their own advantages/disadvantages and each is available as analogue or digital output devices. Current

## 5 Methods of Circuit Protection for Gearmotors Part 1

Note: this is the first of two parts looking at limiting current for gearmotors, our next post will complete the article. Our gearmotors are frequently used to drive a variety of industrial mechanisms, such as linear actuators or pulleys. A common design consideration in such applications is circuit

## Why Does the Resonant Frequency of an LRA Shift?

Linear resonant actuators must be driven with an AC signal at their resonant frequency, it only takes a couple of Hz in either direction for the vibration strength to dramatically decrease. To make driving LRAs even more challenging, the resonant frequency can shift. What Causes the Shift The

## Driving Brushless Vibration Motors – AB-018 Released

Our latest brushless vibration motor, the 912-101, is a great new product aimed at long life mechanical aid and vibration alerting applications. When it comes to driving the motor, there are some differences between it and the 910-101 coin brushless vibration motor. So we thought we would put

## Mechanical Mounting for Vibration Motors : Moulded and Machined Enclosures – AB-015 Released

Our newest Application Bulletin looks at mounting vibration motors using moulded or machined enclosures. These are specially designed housings for a specific vibration motor which can both secure the vibrating motor and help provide secure electrical connections, for example, spring pad vibration motors. There are a

## Securing Vibration Motor Leads and Wires – AB-009 Released

We are taking a quick break from our series of helping you mount your vibration motors, see AB-006 for PCBs and AB-007 for Bulkheads, but we’re not moving far from it. Our latest Application Bulletin will help readers with connecting their vibration motors to their drive circuitry. The connection method can depend