Questions tagged [encoder]
An encoder is a device, circuit, transducer, software program, algorithm or person that converts information from one format or code to another, for the purposes of standardization, speed, secrecy, security or compressions
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Matching ADC and encoder data in time
I'm trying to measure load and elongation in homebrew testing machine. The load is measured by the AD7791 ADC and elongation is measured by linear incremental encoder (quadrature encoder + MCU ...
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DIY Quadrature Encoder? [closed]
Really struggling with making encoders work in my leonardo board, i could probably go the 20 ppr encoder way but i need it to be optical and not electrical/mechanical.
I was thinking about using 2 IR ...
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Encoder signal reading Arduino
I have a quadrature encoder both connected to the Interrupt pins on my arduino. I want to read the encoder values in the range of 0-255 with increment in the clockwise direction and decrement in the ...
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Peaks on absolute rotary encoder values graph
I have a rotary encoder AEAT-9922, which is connected using SSI2 mode. The read format is defined on the 16th page of the datasheet.
Encoder is connected to the STM32F373 microcontroller, which runs ...
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What is the term for a code that has duplicate or redundant/equivalent symbols?
I'm having a hard time performing a literature search because I can't find the right search terms.
I'm looking for what you name a code over some alphabet that treats multiple symbols equivalently. E....
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DC motor set to 0.25 RPM pulling -5 Amps at nearly 20% torque - Why the heck is it doing this?
Drive controlling the motor: PowerFlex DC Drive, 460 VAC, 3 PH, 27 Amps, 15 HP/11 kW, Regen, IP20, NEMA/UL Type Open, No HIM (Blank Plate), User Manual, No Communication Module, A Frame
Motor in ...
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Trouble to receive data from RS485 encoder in TM4C1294
I am trying to read data from an absolute RS485 encoder Single turn "eCoder-20S". The controller is EK-TM4C1294 launchpad. I am using SN75716AP for converting RS485 to UART conversion.
The ...
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RS-170 and SMPTE 170M Encoder
I have been searching for a Video Encoder (DAC) that can output composite signals that are EIA-170/RS-170 and SMPTE 170M standard compliant. I might not be understanding these standards correctly but ...
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Over voltage protection for 5v differential line
I am working on a stepper motor driver that will use 48V as a power source, this driver will have encoder interface. The encoder has 3 differential lines which will only tolerate 5V.
I want to protect ...
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Which waveform leads the other: A or B?
If you only look at the waveforms A and B below, can you determine which one leads or lags the other?
One person argues that A leads B because the first rising edge of A occurs before the first ...
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Tektronix DPO 3052 encoder repair
Two encoders are showing similar behavior as shown here.
But I do not have spare encoders. I have fond this on the ebay.
The part number is 260-2791-00. Edit: no, it is part number with detents, the ...
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Hall sensor or encoder
I have an Ashwoods 1008-269 motor, and I'm having some trouble actually finding a proper datasheet for it. Does anyone know whether it uses encoder or hall sensor, and the pin layout of the output ...
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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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Preventing servo motor and drive ground loops in shielding
I have an XYZ CNC machine that has an electrical panel with industrial servo drives.
I recently had an EMI problem on the encoder cable for one of the motors, and tried to diagnose the problem.
The ...
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Resistor for open-collector transistor
I have an encoder; the circuit is in the image below:
The one that I’m interested in is the PNP one. I want to use a 0-5 V digital voltage, the datasheet says this:
Applied voltage: 30 VDC max.
...
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24VAC Binary Encoder / Decoder for Sprinkler System
I have a typical sprinkler system that runs on 24VAC.
My sprinkler controller is in my garage and my sprinkler valves are across the yard with a cable running underground with 5 wires. One wire is the ...
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The interaction between the encoder and the servo Arduino Uno
Why when the turn occurs in the + direction, it is also read -. Assignment: reading of the encoder occurs with a period of 100 mc, when the encoder rotation is detected the servo also rotates by 2 ...
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Controlling several gear motors with encoders from one Arduino
I am working on a project making a robotic hand that uses several (around 20) gear motors with encoders. I'm using this dual motor driver to drive the motors. The motors are paired into ten sets of ...
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I want to get the data from my fraba encoder directly to my pc without using PLC
The Fraba Encoder which I have is OCD-EEA1B-1213-C10S-PRM Ethernet/IP encoder in which we to get the data from the encoder to show to the PC where we will not use PLC and the communication will be TCP/...
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Measure up to 50um linear displacement with ~100nm accuracy [closed]
I am using some open loop, mechanically amplified piezoelectric (PZT) devices to make linear movements of up to 100um. PZT are well known for hysteresis characteristics thus its repeatability is not ...
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Why is my BiSS C encoder not responding to register writes?
I am trying to write some data to a RLS BiSS C encoder. I'm able to get the single cycle data, so the connection is working and my clock timing seems to be correct. However, according to my ...
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How to programmatically connect/re-connect pull-up resistors?
I’m using a MT6701 magnetic absolute encoder that supports both I2C readout and quadrature pulses (ABZ).
Inconveniently, the pins for the quadrature outputs A and B are the same pins for I2C’s SCL and ...
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Sequential (toggle) input lock
Recently, I was working on my sequential input lock for my class assignment. The task is to make a password security system with toggle input. In my system, I have to make sure that it'll work using ...
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Problem with rotary decoder
I am designing a rotary decoder and I am facing an issue:
My comparator output seems to be high always, even if I cover both LDRs or only one or none.
The comparator output goes into the flip-flop ...
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Why is STM32 (STM32H7A3ZITxQ) 12-bit ADC minimal readout around 60 instead of 0?
I'm trying to read the analog output of an MT6701 magnetic encoder, but I'm having some issues with my ADCs.
The MT6701 provides an analog output where 0 - 3.3 V (I'm using 3.3 V as VDD) represents ...
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How to deal with incorrect optical encoder waveform?
Summarize the problem:
TLDR: I am having trouble reading the signals from an optical encoder to track the position of a stepper motor(I know that it’s redundant to use encoders on stepper motors. It’s ...
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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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How to limit Vd and Vq in FOC for 3kW , 48VAC induction motor?
I am working on developing motor controller for AC Induction Motor.Following are the specifications of the motor:
Rated voltage:48VAC
Rated power : 3kW
Rated current :54A
Poles : 4
Position feedback : ...
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How does a pull-up resistor affect an RC low pass filter? Are two resistors necessary?
I'm using a low pass filter and a Schmitt trigger buffer to filter the output of a rotary encoder. I have included the manufacturer's suggested circuit as well as my copy of it for sake of referencing ...
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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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Periodic noise on peak-to-peak plot
I've encountered a strage behaviour and would like to ask for suggestions.
I have a servo motor that is doing a jog movement with a fixed 250rpm. The motor drives a shaft through an epicycloidal ...
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Teensy read two encoders simultaneously
I am trying to read two Quadrature encoders at exactly the same time. They are 4000CPR encoders, and they will be spinning between 10 to 60 RPM.
The two encoders are mechanically paired to the same ...
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Manchester encoding where the initial state is low
Is this correct? I thought in Manchester encoding the 0's had to be high-low transition, even if the initial state is assumed to be low and 1's low-high.
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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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Connecting a Panasonic EVQ-VVD00203B radial encoder to Arduino
I purchased this Panasonic EVQ-VVD00203B radial encoder for an Arduino project, and am having difficulty figuring out out to wire everything up. This is the encoder:
If I understand the schematic ...
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Reading angular velocity from multiple rotary encoders
I am working on a project, where I need to get reliable data from 4 incremental rotary encoders. The motors can spin at a maximum of 100 RPM, with 420 pulses per revolution. This makes a single ...
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Wireless real-time control of RGB led strip using PWM and RF
I would like to send three 8-bit PWM values (generated using an ESP32 and the ledc library) wirelessly in real-time.
From what I've come across, RF seems like a good option, however I would prefer not ...
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RS-485 connection to motor encoder
I'm using a homebrew encoder based on two A3144 hall sensors (logic, open collector) to control motor rotation. It's connected to the MCU via 2 metres of fancy double-shielded cable with 1K pull-up ...
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5V encoder output to 3.3V microcontroller
I'm trying to design a circuit to connect this quadrature encoder AMT11 output signal to my microcontroller STM32L4R5ZIT6P that's running on 3.3V. Since the output from the encoder is 5V, if I ...
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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 can I shift the output voltage of an encoder to an MCU-acceptable voltage range?
I am using an encoder in my circuit operating on 5 V and the maximum output voltage of my optical encoder is 5 V. I am using the TI CC1350 Launchpad MCU to read the encoder signal, but the problem is ...
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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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How to read multiple quadrature encoders using an Arduino
I am developing a 4-wheel mobile robot. Each motor has a quadrature encoder with 2000 pulses per revolution (PPR).
I have tried to read the encoders' pulses using an interrupt, but the counted values ...
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Single-loop (PID) vs Dual-loop (i.e P-PI) servo position controllers difference?
I am wondering why the servo position loops are mostly dual-loop consisting of position and velocity loops while the position can be controller by using only the position PID controller. I am aware ...
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computation bit error as sum(abs)
I am working on a realisation the convolutional encoder/decoder with constraint length K=7. Encoder and decoder were implemented and currently I am testing these functions
My test file looks like:
<...
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FOC with 50pp stepper kills encoder precision by factor 50
this is my first posting here. I am an IT engineer which does some work on electronics also, partly hobby, partly for innovations at work.
I have a working stepper FOC prototype with current sensing ...
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Strange quadrature encoder signal
I have an inexpensive 600 PPR rotary encoder, like these ones found on Amazon.
It is powered by a 5V pin of an Arduino Uno.
I was unable to detect any rising edges on the signal pins and they never ...
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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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Concept of Booth Encoded Multiplier 8bit
So I'm kinda a newbie in this world so pardon me for the basic questions.
I want to implement Booth encoded multiplier 8bit. Until now, I pretty much understand for the block diagram and what happened ...
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MM74C933N Output-enabled pin
Studying the datasheet of the MM74C922N 4x4 matrix keypad and I am lost on what the output-enabled pin does, its function, and why it is needed. Any help is appreciated.
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