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Questions tagged [rotary]

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

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0answers
41 views

Can you identify this type of switch? Need to replace it

This is hopefully just a simple one to fill in my inexperience. I have a busted rotary switch that I'm trying to replace and I feel like I cannot find one for the life of me, can you tell me what this ...
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3answers
111 views

High resolution angular position (~0.5 degree) measurement [duplicate]

I am attempting to replace a light/mirror sensor to measure the slight low speed oscillations/ rotations of a disc over a period of time. I want to record the angular position, but I wanted to find a ...
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0answers
47 views

Does potentiometer accuracy change with degree of movement?

I want to use a conductive plastic potentiometer for my actuator application where movement is +/- 40 degrees. As in datasheet, the potentiometer linearity is given as +/-0.2 % which I think is for ...
2
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1answer
134 views

Rotary Encoders

I am trying to find a replacement for an obsolete encoder. I thought I had found a good replacement, hiwever the unit increments up when turned both ways, instead of up for right and down for left. ...
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1answer
197 views

DIY rotary inverter technical and economical feasibility

I’m setting up a solar panel system (200W) that’s used to charge batteries that will power small appliances in a converted van. Solid state inverters are expensive and difficult to fix and it seems ...
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1answer
61 views

Receive same GPIO input signal on multiple raspberry's from one source

I'm having 7 raspberry Pi's 3 connected to 7 screens, running an python 2.7 app to download different images from google drive, every raspberry has different images. Geeqie is displaying those images ...
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1answer
106 views

How would I use a rotary encoder without housing?

I'm looking to buy a rotary encoder and I've stumbled upon this: which I assume is an encoder stripped of its housing. My question is how would I use it? There is no shaft to turn, so I'm assuming I ...
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2answers
343 views

How to handle rotary encoder overflow

I am using a magnetic rotary encoder(AS5048B) to detect the rotation angle of a motor shaft. This is fed to a pid loop to calculate the PWM value for motor position control. The encoder has a 14Bit ...
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1answer
106 views

How do memory seats keep track of their position?

I was wondering how do memory seats keep track of their position. Since this kind of equipment existed in 1990's cars, it must be simple yet ingenious. I have been thinking about this for quite a time ...
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1answer
126 views

What do the pins mean on this rotary encoder?

I'm trying to repair a speaker of mine (old AudioEngine A5). The encoder that controls the volume is not working properly and turning the volume up REALLY loud sometimes when you touch it. I had some ...
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2answers
195 views

Determining optical rotary encoder RPM

I hope the first part of this question isn't too physics based for this forum but I am trying to use an optical rotary mask encoder such as this one (Optical Encoder Pair Kit) to determine the RPM of ...
2
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1answer
198 views

Rotary switch that changes resistance on each click?

I am trying to create controller for my car head unit as it lacks a volume knob amongst other things. I have worked out that when tapping onto the control pin I can "send" commands by applying a ...
2
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1answer
657 views

How to calculate RPM, given timer frequency and counter on STM32

on my STM32F103, I use a timer to read rotary encoder Prescaler = 71 Period = 20 Clock = 72MHz Rotary encoder: 2000 ppr Given the formula: TIMUpdateFrequency(Hz)=Clock/((PSC−1)∗(Period−1)) I ...
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1answer
55 views

Arduino reading double-din radio volume rotary dial knob [closed]

Hey all I bought a Chinese double din radio in order to modify it to my liking. The main reason why i went with this one is that it had a few buttons and turn knobs on the front and i wanted to use an ...
17
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9answers
7k views

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,...
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2answers
172 views

Why does this rotary switch register multiple positions simultaneously?

New to electronics, tackling a project that involves a switch matrix. Having grasped the concept of regular button matrices and modifier keys, it’s time to move on to explore alternative types of ...
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8answers
1k views

Can rotary encoders be multiplexed?

I am currently working on a MIDI based project and would like to use rotary encoders. However, due to the nature of my project I need to multiplex a total of 64 encoders with 8:1 multiplexers. Is ...
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1answer
427 views

Quadrature encoder interface loses count

I am trying to read the encoder signal of a drive amplifier using an ARM (TM4C). The amplifier has differential outputs (+- 5V), the MCU has 2 QEIs (Quadrature Encoder Interfaces). First I have ...
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1answer
102 views

Pass power to components on a high speed spinning motor

I have a small Emax RS2205 2600kv 16v DC Motor that is turning a PCB with IC chips that needs to be powered. I want to send 2 power cable (VCC and GND) from to stationary battery to the rotating PCB. ...
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1answer
104 views

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 ...
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2answers
718 views

rotary encoder pin identification

Every datasheet that I have looked at mentions the function of pins A, B and C but no mention of D and E. I'm unsure which one is the push button output and which one is the Ground pin. I'm currently ...
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1answer
135 views

High resolution rotary encoder

I'm trying to find a way to translate small angle rotation into some form of digital signal. 1 degree resolution would be excellent, but something like 5 degrees would be ok. I need something like a ...
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2answers
403 views

SPI: MOSI not dropping LOW for receiving device

I hope this question is not a repeat of others on this stack exchange concerning SPI. I've been searching for at least an hour and have not found the same problem/answer. SCENARIO My friends and I ...
4
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1answer
775 views

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 ...
2
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1answer
3k views

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 ...
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1answer
530 views

Mouse Wheel Rotary Encoder … encoding wrong

OK, guys - I'm pretty confused here. I bought a cheap wireless mouse to gut and use in a project. Right now I'm trying to get the rotary encoder behaving, but (while it IS behaving) it's behaving ...
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1answer
131 views

How to understand data from Bluetooth LE accelerometer with X,Y,Z as single value? [closed]

I'm using a cheap BLE accelerometer MPU 6050 that notifies X, Y, Z values as a single attribute. It seems that this type of value hasn't been standardized and I don't know how to read data correctly. ...
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2answers
231 views

Necessary Read Frequency vs PPR of Rotary Encoder

I am working on a microcontroller (ATMega328) project where I am planning to use a rotary encoder. I plan to have a non-time critical main loop and set up a timer interrupt to handle reading the ...
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3answers
249 views

Maximum rotation rate for digital compass

How well do digital compass ICs (e.g. HMC5843) cope with when rotating rapidly? If I were to rotate one at 1000 RPM, what kind of signal could I expect to get from it? Would the measured bearing lag ...
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3answers
247 views

Identifying this part - ALPS 242N Probably a rotary encoder

This was damaged in shipping. Looking it over I THINK it's a rotary encoder. ALPS seems to have forgotten they ever made the part. Printed on the back is ALPS 242N. Can't find any specs on it. ...
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2answers
45 views

Can HEDS-5500 rotary encoder work with semicircular shaft?

Does anybody know if HEDS-5500 rotary encoder can be used with a stepper motor semicircular shaft (with the shape like in this picture)?
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1answer
115 views

Rotary Decoder circuit for high PPR Encoders

I am working on a project that uses a rotary encoder, I am using a locally made encoder of 200 PPR(pulses per revolution), The encoder has 2 inputs wires (0-5 volts) and 2 output wires (output pulses)...
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5answers
1k views

Telling which way a KY-040 Rotary Encoder has been turned

I am stripping this problem down to the bare minimum. I have KY-040 Rotary Encode, When it is turned clockwise I want a blue LED to blink for every increment it is turned. When it is turned anti ...
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0answers
198 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
447 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
51 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
74 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
253 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
687 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
1k 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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votes
2answers
1k 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
568 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 ...
6
votes
8answers
6k 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
54 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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votes
2answers
374 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
2k 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
230 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
2k 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 ...
3
votes
2answers
150 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
128 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 ...