Questions tagged [rotary]

Characterized by circular movement around an axis, as opposed to linear movement along a line.

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0answers
280 views

Is it technologically possible for IVR systems to recognize and support pulse dialing

I understand all the concepts behind IVR systems. I've never been able to quite understand why pulse dialing can't be used with IVR systems. Tones are obviously sent to the other party, but a pulse ...
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2answers
908 views

No-Stop Rotary Switch

I need help naming a type of rotary switch. (If it exists.) I am looking for a rotary switch with no stopping point, so it would go around and around when turned, repeating each position infinitely. ...
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1answer
55 views

1 switch-bank, 1 rotary, 5 inputs, 3 devices, no idea how

I have 3 separate LCD's which have 5 push buttons to control the LCD settings and power. All push buttons on the LCD share a common ground. What I would like to do is use 1 switch bank and a 3-...
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2answers
91 views

Scaling signal voltage from 0 to 5 V

I have a rotary 5 V potentiometer with a center point of 2.5 V, that only reads a max of 3.8 V and a min of 1.2 V due to mechanical restrictions I can not give the pot and more movement. Is there a ...
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1answer
391 views

What is masking-time and chattering in rotary encoders?

In the datasheet of these encoders there is always a chapter mentioning masking-time and chattering. I couldn't find any tutorial on this. What are these definitions about?
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3answers
915 views

Help to understand incremental rotary encoders

I have this encoder. But I'm having extreme difficulty understand how these encoders work. I tried to google but still cannot picture in my mind how they really work. I spend two days for research ...
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1answer
3k views

DIY Rotary Phase Converter with starter motor, cutout relay in parallel with load?

I am working on a DIY Rotary Phase converter with pony motor. This will use single phase 240v and run capacitors to feed 2 legs of a 3 phase motor, which will generate the 3rd leg. It uses a 1/2 HP ...
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2answers
2k views

Rotating components in Altium Designer, clearance

I can't find out how to properly rotate 45 degrees components in Altium Designer. I read two topics about that: Rotated component placement in Altium How can I rotate a part in Altium without an ...
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1answer
661 views

Searching for the name of a rotary switch/push button switch combination [closed]

I'm looking for a switch that combines a rotary switch and a push button switch. The only one I could find is the "Würth Elektronik WS-RPTL 481RV12172100" which is not exactly what I was hoping to ...
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8answers
7k views

How to provide power to a rotating circuit? [duplicate]

I want to build something with my unused fan. I am planning to put a lighting circuit using LEDs and a microcontroller (ATmega, Arduino Nano, or something), thus creating some kind of image from the ...
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1answer
68 views

Rotary Sensor Potentiometer SP280X series

I have a novatechnik rotary sensor potentiometer SP2801 100 002 001.Th datasheet shows that it has a maximum electrical angle of 100 degree.But I saw that we can move the pot in any direction any ...
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2answers
419 views

Rotary Encoder for Android GPIO

I'm not too sure if this is the place to ask but I'm not sure where else this question belongs. I'm trying to hook up a rotary encoder to an Android dev board's GPIO pins, although I'm having trouble ...
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3answers
4k views

Rotary encoder to 2 buttons

Please excuse me if this question is a very obvious one, I have searched on here but my electronics knowledge is very very basic. Here's what I'm trying to do, I have taken an old Android phone ...
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1answer
269 views

How to reliably sample a sensor during the rotation of a wheel in a car?

I would like to sample the acceleration of the wheel axis (vertically and left-right) N times per rotation (for example once per spoke, but not necessarily). The data would be processed with Arduino. ...
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1answer
3k views

How does a Rotary Encoder work without connecting it to 5V

Like in this picture: I know we can hook 5v later externally to debounce but still, i heard it works without debounce circuit even if its bouncy. But how can it send signals if there are only output ...
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2answers
173 views

Small rotary switch

I'm looking for a small rotary switch but don't know the terminology to find what I'm looking for. To be honest I'm not sure they make what I'm looking for. The closest I have found is this, a rotary ...
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1answer
164 views

DIT-MCO hardware with Rotary switch & Nixie Tubes?

I really needed some help. I can't for the life of me find any information pertaining to this hardware manufactured by the DIT-MCO Electronics Division. The most information I can glean is that It's a ...
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1answer
601 views

Detect rotation direction of a rotary switch

Posted recently this: https://electronics.stackexchange.com/questions/210904/detect-rotation-of-a-rotary-switch But I want to be more precise about what I'm trying to do. I have a 1 pole 8 position ...
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5answers
8k views

Interfacing multiple rotary encoders to a microcontroller

What, in your opinion, would be the most efficient way to interface muptiple (let's say, >20) incremental rotary encoders to GPIO-limited microcontroller (for example, ATxmega128A4U, 44 pin)? ...
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1answer
294 views

Use a potentiometer in place of a 4 position rotary switch?

I have a little oil heater in my house that is on the fritz. Its "Off-High-Med-Low" switch is just basically gone. While I might be able to dig out another switch from some of my electronics junk, I ...
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1answer
367 views

How exactly do 1950's rotary phones receive phone calls? [closed]

What happens start to finish. For example, how does the signal get from the central office to the phone and what mechanisms within the phone move to signal that a phone call is coming?
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3answers
93 views

Optic encoder - Rotation

In the following you can see the channel A ( above ) and the Channel B ( middle) output of an optic encoder that is connected on a rotating shaft. My questions is: Does the impulse width impact the ...
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3answers
807 views

Where to place debouncing circuit for remote mounted buttons and rotary encoders

I have an application where a push button and mechanical grey-code rotary encoder(user inputs) need to mounted away from main pcb. 24" - 48" away. This is for space and packaging reasons. Is it OK to ...
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2answers
1k views

What type of encoder is this (optical, magnetic, inductive… etc)? and how does it operate?

I have found this circuit mounted to a DC motor. It is probably an encoder but I don't know how it works. I have looked everywhere but I could not find a similar encoder assuming that this is in fact ...
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2answers
1k views

Help me identify this rotary encoder [closed]

I need help identifying this 360 degree rotary encoder on my Roland SC-880 rack synthesizer. This one has become 'jumpy' and Roland claims the part is discontinued. So my only choice is to replace it. ...
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2answers
519 views

Two phase frequency doubling a rotary encoder

I have a 600ppr quadrature encoder that I would like to get the highest possible resolution out of. I need sub arc/second accuracy for my project. I saw differential Manchester encoding as a solution ...
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4answers
780 views

Is it possible to use 2 rotary encoders at once?

I'm working on this project: http://www.corsaclube.com.br/viewtopic.php?t=102183 I'm basically installing an iPad mini on the dash of my new car, but I'm facing a problem: The iPad doesn't offer ...
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1answer
719 views

Changing the path of a signal through multiple transistors with a single-poled switch

I was wanting to construct a "fuzz" distortion guitar pedal, but being indecisive, I wanted to be able to change the type of transistors in the circuit at will. I found the idea of using a double-...
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2answers
6k views

What is the use case difference/benefit of using a Gray code vs. Incremental rotary encoder

I am planning to build a small digital project where a rotary encoder would be ideal for sending "up/down signals" (e.g. scrolling through a list on screen). Are there any benefits of using a Gray ...
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4answers
2k views

Computer controlled rotary switch

I have a circuit with a rotary switch (1 pole, 6 positions). Instead of turning this switch by hand, I would like to control it via a computer. Are there any components that can do this? They would ...
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6answers
281 views

Accurate sensor for a rotating object

I have a square-shaped plastic plate (3 cm length X 3 cm width X 1.5 cm height) attached to a motor that rotates it at 500 Hz: I would like to have an interrupt fired on my microcontroller every time ...
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2answers
192 views

Toggle battery powered LEDs

I am helping to build a costume prop that has four LEDs lights on it (1 white and 3 amber). This device is worn on the wrist, so space for power is limited- a 9V battery or something that will fit in ...
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1answer
714 views

Arduino hinge rotation sensor

I'm having trouble finding a specific component for a project I'm working on. What I need is a sensor that can act as a hinge (or can measure the rotation of a hinge) and tells the degree of rotation ...
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1answer
3k views

Rotary Cam Switch wiring help

I am trying to wire this rotary cam switch to spin a DC motor forward and backwards based on the UP and DOWN setting. I am having a really hard time trying to figure out how to wire it. Can someone ...
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1answer
14k views

STM32 Rotary Encoder with Hardware Interrupts

I'm trying to get a rotary encoder working on my STM32. I have channel A & B being pulled up to 3V and debounced with 1uF capacitors. The board has channel A & B connected to PA11 & PA10 ...
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1answer
1k views

Whats the name of a BMW iDrive type of encoder? [closed]

I am looking for a component that some people call a 7 way encoder switch. Basically, if you look at the center piece of the BMW iDrive, its that. It's a knob looking piece that if you turn to the ...
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4answers
1k views

Combine signals from two rotary incremental encoders to one output

There is some device controlled by (optical) rotary incremental encoder (which gives quadrature output - two channels with square shaped pulses and shifted between each other). I want to add another ...
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2answers
1k views

Measuring rotation angle

I have a horizontal platform that rotates over a vertical axis. Is there a way to measure the rotation angle with respect to earth (or its initial position) without gyroscopes, rotary encoders on the ...
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2answers
496 views

Continous rotary input?

I need something to work as an input for a rotary device. It must be able to rotate continously, accurate to a degree of rotation, and so that any extra full rotation will have no effect on the input, ...
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4answers
55k views

How can I spin an old HDD motor?

I've stripped out an old IDE (40 Pin) HDD from 1998 for use in a POV display project (Gr. 12 Computer Engineering), and I've been trying to spin it up. The problem is that the HDD motor is brushless ...
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1answer
7k views

Rotary Encoder Detents

I've seen rotary encoders that you can get with and without detents (example). What are detents in the context of rotary encoders? When would you want / need your encoder to include this feature in a ...
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3answers
2k views

Decoding multiple quadrature rotary encoders

Scenario I have 4 ACZ16 quadrature rotary encoders connected to GPIO Port D on an ATMega168P. I am only trying to extract rotation direction from them. Position is irrelevant, and it is guaranteed ...

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