Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [rotary]

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

104 questions
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Is there something such as an infinite potentiometer?

I am trying to find a component, that, similar to a potentiometer, delivers an analog output, but which can be turned indefinitely in a single direction. I have tried searching for something like this, but I never quite found anything that does what…
Busti
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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 DC, so it requires more than just a ground and…
Alex
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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 design?
vicatcu
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How to provide power to a rotating circuit?

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 rotating LEDs. However, I have no idea about how…
anonimo
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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 one. The circuit is placed on a motor casing…
Zero Cool
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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 only one encoder will rotate at any given time.…
Matt Young
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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?
user1245
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How can I avoid twisting wires in a circuit that rotates?

I am working on a project where I used a hollow pipe whose one end has a circuit board so that the wires will go through the pipe to the other end completing the connections. That pipe has to be rotatable, too. Rotation speed will not be too high,…
Vinayak Rastogi
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KY-040 rotary middle push button switch is unreliable

I have the following rotary encoder with a built in push switch: http://henrysbench.capnfatz.com/henrys-bench/arduino-sensors-and-input/keyes-ky-040-arduino-rotary-encoder-user-manual/ I connect the switch pin to a regular digital input pin,…
qlesk
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STM32: Timer encoder reset

I configured my TIM4 as encoder input and everything is working well when I execute TIM_GetCounter(TIM4) But I would like to put the timer value back to 0 (reset?) when I press a push button with an interrupt on it) and I don't find a reset…
vib
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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 respectively and have configured hardware interrupts for…
spizzak
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How do I clean a badly corroded, jammed rotary switch with 12 position and 4 decks?

The 12-position 4-decked rotary switch on this Roland Re-201 dating back to the '70s or the '80s is completely stuck and won't move at all due to corrosion. The wafers on it's decks seem phenolic. The contacts can't be easily reached, with about 1…
philosyche
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Motorized rotary switch

Motorized potentiometers are easy to find and often used e.g. in music studio equipment, but I could need a similarly motorized rotary switch for a project. I am either searching for the wrong term (are such switches known under a specific name?) or…
jarnbjo
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Short range wireless pulse transmission in wind anemometer

I have an old windmil-type anemometer, something like this: (Illustrative image, the real unit is 40+ year old soviet-made device with presumably no operational active components inside) My project is to hook it up with sensors, so I can read and…
airguru
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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 but no luck. Here are my questions: 1-) What I read…
user1245
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