The tag has no usage guidance.

learn more… | top users | synonyms

0
votes
0answers
25 views

iPhone Notification Bracelet [on hold]

I would love to create a device (much like those on the market already) that will communicate that the user's phone has received a text/call. In thinking about this, I am imagining using a vibration ...
-1
votes
1answer
89 views

Frequency control of vibrator motor

I wish to generate a controllable frequency vibration on a device. The vibration frequency then has to be measured and filtered. For this purpose, I am using a vibrator motor as shown. Now, i wish ...
0
votes
3answers
144 views

How To Detect a Gunshot

Hey everyone I am working on a project that is a lot harder than what I thought. It is a project for school. How can I detect a gunshot indoors without using an array of microphones? I had something ...
-1
votes
1answer
54 views

Is there a programmable remote vibration motor? [closed]

I am a developer and loves to develop all kind of things for me to simplify my life. Now I'm looking for the possibility to wear a tiny device that receives signals from an app of mine to vibrate when ...
0
votes
1answer
136 views

Triangulation Vibration Sensor Impact Detection Position

I am working on a project to detect the position of an impact using three vibration sensors each one of them linked to a micro-controller(in my case STM32F4) . Using ADC and UART ,I can plot with a ...
0
votes
1answer
90 views

Why is my LED less bright when activated through a vibration switch? How can I avoid this?

total noob here. I'm trying to figure out why an LED in a small circuit isn't getting to full brightness, and how to fix that. It's a simple, pre-bought circuit, seen here http://postimg.org/image/...
0
votes
1answer
87 views

Vibrating bracelet controlled from cell phone [closed]

I was inspired by this project: How do I build a bracelet that vibrates once every n minutes? but I want to take it a step further. The main idea is creating a vibrating bracelet that is controlled ...
0
votes
1answer
59 views

Order analysis, need help

Hi fellow electronics enthusiasts. I'm currently working on vibration detection machine used to detect unbalance from a rotating shaft, rotating from 300-2500 Hz. I have both the tacho signal ( 1 PPR )...
0
votes
1answer
460 views

Arduino piezo vibration measurement circuit

I'm looking for a very simple measurement circuit to measure vibrations with a piezo elment and an arduino device. I want to read positive and negative values. I have this sensor: http://www....
1
vote
1answer
100 views

Piezo vibration sensor board negative values

I have this piezo vibration sensor module from Grove: http://www.seeedstudio.com/wiki/Grove_-_Piezo_Vibration_Sensor Using this sensor and an arduino device I want to measure two things: ...
3
votes
3answers
166 views

Is a screw or push-in terminal better for vibrating environment?

I need to decide what connector to use on my PCB to connect low power wires. Among the available options on Farnell/Mouser etc. The price and size are almost similar. I wonder if using a screw ...
3
votes
1answer
84 views

Electromagnetic energy harvesting designing problems

We designed a very simple energy harvester made of a little magnet that moves inside a coil. We have a vibrating environment moving at 12 Hz with 10 millimeters peak-to-peak. Our pcb will be ...
0
votes
3answers
86 views

Piezo or vibration sensors?

I see that there're vibration sensors and that piezo can detect vibrations. Which is better (more sensitive) for detecting knocks over a piece of wood? I'm looking for a small package, so I'm only ...
8
votes
2answers
186 views

Minimum wire gauge with vibration

I've heard that there is effectively a minimum wire size for vibrating environments. In other words, when designing wires that will experience vibration (in my case, an automobile), it's recommended ...
0
votes
1answer
118 views

controlling vibration frequency and amplitude of a motor

I want to build a hardware circuit that can control the frequency and amplitude of motors. I have a few questions about this. 1) What kind of actuator do I need to use? I have used ERM motors and the ...
-2
votes
1answer
65 views

Vibration sensor and its tiny leg

Why does a vibration sensor have such a tiny and easy to break second "leg"? Why can't this contact be as strong as the other? Datasheet is at http://www.beelee-switch.com/uploads/soft/120512/18010P....
0
votes
2answers
110 views

Generating exact frequency of vibration with motors

I measured the frequency of motors with an accelerometer (ADXL335), but the frequency from my measurement is a lot different from the frequency specified in the product page. I tested with two ...
1
vote
2answers
71 views

Frequency of motor vibration with different voltage

I'm using a motor shown in the link below. http://www.adafruit.com/product/1201 The product page is not showing the detail of how the frequency of vibration changes with different voltages. I sent ...
5
votes
1answer
136 views

How would you dampen this little quadcopter?

Well, I made a little quad from scratch. From scratch as in from PCB design. After assembling, testing, some coding, it turns out my accelerometers get WAY TOO MUCH vibrations and I can't detect ...
0
votes
1answer
383 views

proximity probe (sensor ) / eddy current pre-conditioning circuit

my goal is to use Arduino with 2 proximity probe sensor to achieve some output like orbit plot for a shaft mounted on a bearing the system ...
0
votes
2answers
84 views

reducing mechanical vibration from a PSU

I have a keyboard synthesizer which emits a 60Hz hum due to mechanical vibration of its PSU. The vibration is magnified by the metal chassis of the synth which acts as a soundboard. It’s very annoying ...
0
votes
1answer
38 views

Power requirements for offset motor or other forms of vibration

I need to generate vibrations to provide tactile feedback. The device has minimal power available. What type of power do offset motors require? Are there other forms of vibration that can use less ...
3
votes
2answers
732 views

How do I find source of vibration from a mechanical source outside of my home?

My problem is vibration from a mechanical source outside of my home. I think I have found the source (machinery at a legal marijuana grow op) and need to prove it to get an injunction at court. I ...
2
votes
1answer
311 views

Connect a vibration motor to a headphone jack

I would like to solve the following problem: I have a a variometer-device for an RC plane. Its receiver has a standard 3.5 mm headphone jack that provides a beeping sounds to my headphones. I would ...
3
votes
1answer
359 views

can I drive 100 or so LRAs with WS2811 controlling DRV2603?

I would like to make a suit with 100 or more individually controllable Linear Resonant Actuators. Texas Instruments makes this http://www.ti.com/lit/ds/symlink/drv2603.pdf which take a PWM as an input ...
0
votes
1answer
177 views

Calculating mV/g of a sensor

I have constructed a piezo-resistive sensor using graphite. I managed to obtain the output voltage of 0-5V by using the ADC of my Arduino to read the sensor. But I have no idea how to calculate its ...
0
votes
2answers
1k views

converting mV to g

I have recently run a vibration test at work using a PCB piezotronics model 482C sensor signal conditioner. How do you convert the the MAX reading (in mV) into the equivalent acceleration (in g). The ...
0
votes
3answers
1k views

Need a fast, sensitive vibration sensor circuit that doesn't jitter

I have been working on a project to take high speed photographs of things like balloons popping. I shoot in a completely dark room and use fairly fast shutterspeeds, but flash is what freezes the ...
3
votes
1answer
1k views

How does vibration motor create motion in particular direction?

I am building an autonomous robot for robot swarm reasonably small in size (say 30mm x 30mm). I was analyzing such robot's locomotion and found that coin vibration motors are used widely as opposed to ...
0
votes
1answer
719 views

Accelerometer raw data output to measure vibration,and do a frequency spectrum/ amplitude spectrum?

Ive used an Arduino to measure vibration on a washing machine and have up to 100 raw data out putvalues. I want to present an amplitude/frequency spectrum with these values, i have matlab and simulink ...
0
votes
1answer
53 views

Is there risks or limitations to install driver board under a pinball playfield?

I'm currently designing the electronic for a pinball. I would like to reduce the usual cable mess under the playfield. I'm thinking of creating small driver card that handle small amounts of switch, ...
0
votes
1answer
311 views

Distance sensing with comparator

I want to implement a alert system using a comparator circuit. The circuit will alert the user when he is a certain distance away from an object of interest. The comparator circuit will comprise of an ...
1
vote
2answers
4k views

Stepper Motor rotating but vibrating

So my problem is that I have 3 steppers and using the Accel Library I tried to make them move simutanousley, first of all two steppers move at the same time then a third one continues to rotate, ...
0
votes
3answers
437 views

Multiple sensors off one pin

I have multiple piezo sensors acting as vibration sensors. I am using a PIC microcontroller that only has 2 ADC. I want the circuit to function in such a way that if any of the sensors are hit and ...
0
votes
1answer
594 views

Small Vibrating Motor at Set Intervals

I am looking to create a simple circuit that utilizes a very small vibrating motor such as the one here: http://www.adafruit.com/products/1201#Distributors. I would like the small motor to be powered ...
7
votes
1answer
588 views

What PCB wire termination should I use for high-vibration environments?

I'm designing a system for a high-vibration application. I need to land wires on circuit boards. Someone suggested that I use a Wago cage clamp, and that there might be similar things from other ...
2
votes
3answers
4k views

What is good device for generating vibrations, offset weight motor or solenoid or some other?

I am building a vibrating device for that I am thinking to use a solenoid for vibration. The solenoid will be used such that device will be mounted in the floor and when a stick is put over solenoid, ...
-1
votes
1answer
75 views

Vibrotactile graphic equilizer? [closed]

I'm very new at this, but here goes: I work with adults who are both deaf and blind. I'm trying to basically build a graphic equalizer that has vibration motors instead of LED's. It would be worn on ...
4
votes
3answers
547 views

Vibration Detection bronze keyed instrument

I want to be able to detect when a bronze key (Balinese Gamelan) gets struck by a mallet (hard wood) without effecting the keys vibration, so a piezo is likely out. Example of the instrument: Is ...
5
votes
1answer
3k views

Using Piezo Vibration Sensor with Pull-Down Resistor - Arduino

I'm using a MEAS piezo sensor (this one: https://www.sparkfun.com/products/9196) to detect very slight vibrations, but I'm having trouble selecting a pull down resistor that allows it to be sensitive, ...
0
votes
4answers
724 views

Can I buy a motor that vibrates or pulses very precisely?

I'm trying to make an item with a number of pads that will pulse individually or in sequence with a given signal. I have looked at vibration motors but these are like the ones in video game ...
1
vote
1answer
216 views

I need to sense if a rope has been touched, what is a safe way to do this?

I was thinking of attaching a sensor to the rope but there are so many types I'm not sure which one to use. Pizeoelectric, rolling ball, vibration, tilt and tension sensors could all work. I need ...
2
votes
3answers
325 views

Why don't capacitor's plates stick together?

When capacitor plates carry opposite charges, then why don't they stick together due to attraction? They must stick since the plates have opposite charges.
2
votes
1answer
882 views

Finding a sensor for vibration of impact event, preferably for interface with arduino

Vibration Sensor, I want a really high tolerance, I intend on using this to measure the vibration generated when dumbells are thrown onto the floor in a gym. Because, I have familiarirty with the ...
5
votes
2answers
272 views

What is the most power-efficient way to generate vibration in a small area?

I'm trying to generate a perceptible vibration (as felt against skin) in a roughly 4x4mm area. What's the most power-efficient way to do that?
3
votes
2answers
318 views

Circuit movement detector

I'm looking for some simple schematic for movement detection. I want to use it with a small hobby project of my own to detect if someone is moving the box, doesn't matter the direction. I'm looking ...
2
votes
1answer
1k views

Vibration Measurement using Accelerometer ADXL335

I like to know how to measure vibration in Hz using ADXL335/similar sensor in one axis, With that sensor, after converting digital using ADC, now i have some 8-bit binary value(0-256 in decimal)... ...
8
votes
4answers
12k views

How do I build a bracelet that vibrates once every n minutes?

I intend to establish a few new personal habits that eventually become second-nature to me. To assist myself, I want to wear a bracelet that vibrates every, say, 5 minutes all throughout the day as a ...