Questions tagged [rotary-encoder]
The rotary-encoder tag has no usage guidance.
52 questions
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Make optical encoder using IR Receiver [closed]
I want to make an optical encode to measure rpm of a motor. I have F429 optical encoder but it does not seems to be working above 2100 RPM. Also it is full of errors.
I have seen in this tutorial to ...
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Quadrature encoder interface without capacitor
I have connected Digilent PmodENC board with a rotary shaft encoder to myRIO MXP DIO pin. MyRIO has an internal 40 kOhm pull-up resistor.
On PmodENC board each encoder output has 2 resistors with ...
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SSI interface to an encoder
I'm trying to interface a rotary encoder (IFM RM8002) with an Arduino Nano. The encoder uses the SSI protocol with RS-422 signaling. It has a 2-meter cable, no big stretch for RS-422.
I have a TTL / ...
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Mouse wheel rotary encoder
I've been designing a computer mouse to replace the now discontinued logitech g600, and am using an RP2040 module as the MCU. Everything on my journey has had design references available except for ...
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Implementation of a variable-detent rotary encoder
I'm curious as to how a variable-detent rotary encoder would be implemented. For example, the Rivian R2 dials on the steering wheel have this effect, and I'm interested in how they made it work. Also, ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 (...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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320
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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¤cycode=USD
and I am trying to figure ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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, ...
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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?
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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 ...
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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 ...
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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 ...
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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 ...
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