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Questions tagged [rotary-encoder]

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Rotary encoder filter schematic unclear

I have a PEC11R-4215F-S0024 rotary encoder and want to build a filter circuit but I do not understand which parts of the schematic are connected to their respective pins. Additionally I only see 4 ...
Sandvall's user avatar
1 vote
0 answers
25 views

What is the single line waveform of a resolver of sin or cos output?

For a resolver, the excitation signal is about 10kHz sin waveform. And the output are two pairs of differential ports: sin+/- and cos+/-. If I test the output signal(such as sin+/-) by using a ...
lukeluck's user avatar
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Cable layout for multiple motors and encoders

I need to make a connection between 2 PCBs, the first is a controller board with microcontroller, motor drivers and other peripherals. The second is a motor/encoder board, essentially a three motor ...
mowbly's user avatar
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2 votes
1 answer
251 views

What is the output voltage of 1 Vp-p specified sin/cos encoders?

Encoders with sin/cos analog output (example model Hengstler S21) typically specify the output signal as 1 Vpp. This seems to be some kind of de-facto standard for the output amplitude. If I ...
jpa's user avatar
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1 vote
1 answer
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Should I maintain any minimum distance between two hall encoders of two motors?

I am a beginner and am trying to build an autonomous mobile robot. I want to use two DC motors with Hall-effect encoders. The image shows the position of the two DC motors. Do I need to maintain any ...
Msr09's user avatar
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0 answers
62 views

Replacement of an encoder with strobe/CS line by a standard SSI encoder

The encoder is operated by a Beckhoff KL5001 unit, part of a larger control system with few documentation available. The strobe/CS signal is generated elsewhere in the system. I am wondering what ...
Christian K.'s user avatar
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44 views

Replace ring encoder in a circuit

So a ring encoder on my car's HVAC control module went bad. There is another identical encoder on the same PCB. I took readings of the voltage across al five pins of the working one while changing ...
Manuel Ruiz's user avatar
3 votes
0 answers
77 views

What is this component? Car AC control unit ring encoder [closed]

So my mode door knob (the one to direct air to windshield, feet, etc.) has gone bad, it always blows air to the windshield. I tore down the dashboard and got to the problem, the potentiometer-like ...
Manuel Ruiz's user avatar
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0 answers
80 views

Rotary encoders giving incorrect output

I've tried two gray code encoders recently, one from Panasonic, one from TE. They both exhibit a similar problem. When connected electrically with wires, but not connected mechanically otherwise (...
OutstandingBill's user avatar
4 votes
3 answers
958 views

Reducing the filter complexity for rotary encoders

I am using Bourns rotary encoders, specifically the PEC11R-4215F-S0024 part. In the datasheets, Bourns suggest a filter circuit as follows: I've used this filter in a previous PCB design, and it ...
Bram's user avatar
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1 answer
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Ways to measure brushless motor velocity?

I am using an RC car chassis for some robotics work, I am interested in sensing motor velocity. With brushed motors the only option appears to be using an external encoder(though I wonder if spikes ...
FourierFlux's user avatar
7 votes
3 answers
2k views

Can I use a motor as a rotary encoder?

Let me preface this by saying that I'm not an expert, nor do I conclusively understand how op-amps work, but I have a strong suspicion that this should be possible, at least crudely. I have this idea ...
Isaac Walters's user avatar
0 votes
1 answer
140 views

Get Motor RPMs from Resolver Signal

everyone. I have a servo motor that outputs a resolver signal (sine, cosine, and reference). Each of the three signals is a differential pair (+A/-A, +B/-B, etc.). And the three signals are encoded ...
njs's user avatar
  • 277
6 votes
2 answers
743 views

Inexpensive approach to finding a shaft position with an absolute encoder [closed]

I need an absolute rotary encoder to monitor the position of a 2 inch shaft. I have access to the end of the shaft Hunting for a starting position may be very difficult, as the machine is very heavy ...
sebastian323's user avatar
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2 answers
55 views

Recommeneded method to monitor rotary position and speed of machinery shaft

I am building a piece of industrial machinery that will operate between 10-200 RPM. I would like to know the rotational position and speed of the shaft (2in diameter steel crankshaft). I am currently ...
sebastian323's user avatar
0 votes
1 answer
132 views

I have three absolute rotary encoders that can output analog sinusoidal voltages OR SSI signals. I need to send their signal to a single pin. How?

The rotary encoders I'm using are sold with several different output options. Analogue sinusoidal (90* phase shifted sin and cosine signal), Incremental output (90* phase shifted quadrature signals ...
sebasjhin's user avatar
2 votes
2 answers
340 views

Is there a rotary controller that can detect both X and Y axis of motion?

I'll preface this by saying that I know nothing about electronics and have never held a soldering iron in my entire life. I am a pathologist by profession. I am trying to design a controller that ...
user329958's user avatar
0 votes
2 answers
81 views

24 pin potentiometer/rotary encoder identification

I am building my first button box. I got some electronic parts that were going to be scrapped to take some switches off. I found this potentiometer or rotary encoder on one of them but I can't ...
hogwashnd's user avatar
0 votes
1 answer
51 views

Controlling a rotary controller by a stepper motor

I have seen a lot of projects showing how to control a stepper motor with a rotary controller. Has anybody ever seen a solution for the inverse problem? I would like to control a rotary controller ...
Jean's user avatar
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0 answers
836 views

How to connect an EC11E rotary encoder to a microcontroller?

I'm connecting a EC11E rotary encoder to a Adafruit Feather 32u4 Bluefruit LE. The EC11 has 5 pins: 2 for the switch, and 2 for the knob. Connecting the encoder itself would be easy, but I'm having a ...
kid's user avatar
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0 answers
212 views

Totally misunderstanding how a PMOS works? PMOS not turning off

I'm trying to use a PMOS to inverse an on/off signal. This is for a battery powered application. VSNS pin is connected to MCU GPIO. By design the rotary encoder channels A/B (detent type) are always ...
Vulxcn's user avatar
  • 75
3 votes
3 answers
817 views

Raspberry Pi not reading rotary encoder accurately

I wish to write a program for my Raspberry pi that will print > when a rotary encoder is rotated clockwise and < when its ...
Doron Behar's user avatar
1 vote
1 answer
214 views

BLDC motor for position control for brushed DC motors

I have done s SE survey of BLDC motors and figured out they are essentially stepper motors but aimed for continuous torque. Moreover they differ from brushed DC motors significantly in terms of ...
user0193's user avatar
  • 436
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0 answers
41 views

Could hall encoders that are attached to the DC motors affect each other or the IMUs?

I am a newbie and I want to build an autonomous mobile robot. I am planning to use 4 DC motors with hall-effect encoders. I will use 4 IMUs for localization at first. Next, I also have the plan to ...
Msr09's user avatar
  • 53
1 vote
5 answers
736 views

Optocoupler Input or Encoder Output Problem?

I have this basic circuit but it's doing my head in with the actual prototype: When LINK is open (not connected to the optocoupler), Encoder output works OK - it goes 0V and 5V. Also while LINK is ...
Ariel Narboada's user avatar
0 votes
3 answers
324 views

Identify rotary encoder or potentiometer?

I'd like to fix my old receiver/amplifier. It has a broken button "balance", but after opening and extracting the component I have no idea what I should buy to replace it. From my point of ...
Robert's user avatar
  • 29
1 vote
2 answers
495 views

How is this encoder supposed to be wired?

I have this encoder: https://www.mouser.com/ProductDetail/Bourns/PEC12R-4020F-S0024?qs=sGAEpiMZZMsUJpHmmVieqHTo0n9kjhYO9zCZFTxUfRg%3D&countrycode=US&currencycode=USD and I am trying to figure ...
RGB Engineer's user avatar
2 votes
3 answers
3k views

How to increase STM32 Timer (encoder mode) counter value?

I am developing mobile robot. Hear i required to read quadrature encoder.So i am using stm32F401 using 16bit timer(encoder mode) to read the count.After 65535 count goes to 0. My question is how to ...
Saravana kannan's user avatar
4 votes
2 answers
683 views

Is it possible that north and south poles of a disc-shaped magnet change position over time?

[See update at the bottom] We build brushless DC motors of about 1 kW power at 48 volts. In order to drive the motor, we need to know the rotor position and, to do that, we fit a disc-shaped magnet on ...
linuxfan says Reinstate Monica's user avatar
3 votes
0 answers
129 views

Running a 12V motor on 9V battery and arduino and matlab implementation

I have a DC geared motor rated at 12V and 60 rpm . It has a quadrature encoder with 700 PPR. I connected it directly to a 9V battery (almost new) and wished to measure the rpm of that motor. To find ...
Helix xxx's user avatar
2 votes
2 answers
141 views

Soldering information missing from datasheet - what can I assume?

Background I tested some Bourns PEC11L encoders before soldering - they were working fine. Once soldered to my PCB at 300C using Sn99.3,Cu0.7 solder, they stopped working. Looking at the datasheet, I ...
OutstandingBill's user avatar
0 votes
0 answers
216 views

Minimum Distance between two magnetic rotary encoders in an array : AMS [AS5048B]

I am planning to prototype with multiple AS5048B sensors. (Very basic: Magnets are horizontally placed over the IC that the IC can detect and give an angular reading). I plan to create an array of ...
Rohit Kumar J's user avatar
0 votes
5 answers
1k views

Rotary encoder connected to stepper driver

I want to control the speed of a stepper motor using a rotary encoder (OMRON E6B2 series) conected to one of the PUL terminals of a DM556S stepper driver. ¿Is that possible? ¿Which encoder type would ...
user3177225's user avatar
1 vote
1 answer
1k views

BLDC alignment of hall sensors and encoder

I am trying to build a BLDC motor controller using field oriented control. The motor I am going to use is equipped with hall sensors as well as with an incremental encoder that has 512 steps. I have ...
T. Pluess's user avatar
  • 531
0 votes
0 answers
189 views

Rotary encoder mistakes knob turned for button pressed

I'm using this encoder https://www.cuidevices.com/product/resource/acz09.pdf to scroll through a menu and I'm having an issue where when you turn it clockwise, it thinks the button was pressed (this ...
Lil Mami Chula's user avatar
0 votes
1 answer
123 views

Help designing a data acquisition module

I'm prototyping a shoe that reads the pressure distribution of a person's weight as they walk. In order to accomplish this, I need to design a Data Acquisition circuit board that will be compatible ...
Danielle Luyet's user avatar
1 vote
1 answer
156 views

How to tune this PID loop

I have a DC motor that is controlled by an FPGA and a L298N motor driver board. The FPGA generates a PWM signal based on feedback from a dual channel quadrature rotary encoder (1000ppr per channel). I ...
David777's user avatar
  • 1,492
0 votes
0 answers
104 views

Rotary encoders for automotive display

I'm looking into designing a display to show and adjust brake bias. I'm planning to use a rotary encoder in order to select through menus. Unfortunately, I'm having a hard time deciding which model ...
Rafael Mattei's user avatar
0 votes
1 answer
203 views

Is there a workaround for a Hall effect encoder out of alignment with its sensors on a small motor?

I'm working with two budget SmartArduino 9V 25mm motors on a radio control tank project. Motor-A has a problem in that the encoder wheel is situated laterally above the Hall sensors. Motor-A does not ...
RowanP's user avatar
  • 446
1 vote
3 answers
275 views

Need advice with PID loop on hardware

This is my first time using a PID control loop so I have a lot to learn. I will explain what I am trying to do before I ask any questions. I have an FPGA running a processing core that I made myself, ...
David777's user avatar
  • 1,492
1 vote
1 answer
293 views

How to practically measure the resolution (PPR) of incremental rotary encoder?

I have an incremental rotary encoder that I can't determine its model number thus I can't get its data sheet, How can I measure its resolution manually?
Ziyad Tarek's user avatar
0 votes
1 answer
4k views

Help developing rpm calculation from encoder pulses

I have having a bit of difficulty calculating rpm of a motor using feedback from an encoder. The encoder datasheet is attached here: Encoder datasheet. The encoder has two channels at 1000 PPR, so ...
David777's user avatar
  • 1,492
1 vote
3 answers
631 views

Is an opto-coupler fast enough for this application?

I am counting the pulse edges from a quadrature encoder with an FPGA and using opto-couplers as the encoder is powered with 12V and the FPGA inputs are 3.3V. The encoder is 1000ppr with 2 channels and ...
David777's user avatar
  • 1,492
0 votes
1 answer
282 views

Encoder PPR Required Resolution

This question leads on from a question I asked last night, so some people will know it. I am using an FPGA with a 1000 ppr rotary quadrature encoder counting 4x (counting all edges is 4000ppr) and had ...
David777's user avatar
  • 1,492
0 votes
1 answer
168 views

magnetic rotary encoder 0.3V output voltage

I have a 24V DC motor with a magnetic rotary encoder. The encoder has a 5V supply voltage. The datasheet states that it has an output voltage of 300-700mV. I have also measured it, and it gives around ...
Marcell Juhász's user avatar
0 votes
2 answers
1k views

Connecting multiple encoders in to STM32 TIMx hardware counter (using channels 3+4)

I have a requirement to connect 3+ standard rotary encoders (A/B quadrature) into an STM32 - the STM32L072x is the current choice. While I could bit-bang it, it would be nice if I can just use the ...
John U's user avatar
  • 7,149
0 votes
2 answers
1k views

How to use a Hall effect sensor in a rotary encoder?

I'm designing my own rotary encoder using magnets and a Hall-effect sensor. I'm not getting the linear output I was hoping for. I'm using two magnets and putting the sensor in the middle - like this: <...
Espen's user avatar
  • 101