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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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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BLDC motor phase sensor
I've been working on a 4 wheel differential drive robot. It has 4 brushless motors attached to gearboxes, driven by RC ESCs. I have some of these Hobbywing RPM sensors attached to two wires of each ...
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What is the circuit's logic diagram of a (2-bit binary to decimal) encoder
To give a sense of what I am looking for ... this is a the circuit's logic diagram of a 4-bit binary to decimal encoder.
Here is its truthtable
Now, What is the circuit's logic diagram of a 2-bit ...
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No change in output signal from SICK encoder
I have a SICK DFS20A-A2PBD065536 incremental encoder and I am powering it with 24V DC. When I rotate the shaft, I do not get any change in either A or B output signals (Its a quadrature encoder). We ...
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Pulse Interval Encoding
I am struggling to understand how do I get a pulse interval encoding scheme implemented in terms of hardware. Is there any source of information available explaining the circuit diagram of the same?
I ...
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STM32 encoder mode, CNT doesn't count
I'm using an STM32L476RT. I've got encoders based on a TLE4946-2K. I can't get it to work. I'm attaching my code and config below. I'm kind of stuck at this point. I tried to lower the voltage by ...
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HP C8941 Photosensor operating voltage and circuit
I have at my disposal a photosensor (Optical encoder) with "C8941-80018", it has three cables: Black, Green, and Blue.
I want to know the Operating voltage for this optical encoder and a ...
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Connecting luma only output to composite input [closed]
In the course of troubleshooting this problem I reconnected RCA connector connected to the RCA input of my TV to the luma wire of AD725 in hope having precise and beautiful grayscale picture, but got ...
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Why doesn't this circuit simulation work?
I am trying to build a circuit using only encoders and decoders. This circuit will output the 1’s complement of 3 bit number. (For example: If I give it 010 it will give output 101.)
I used a ...
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STM32 with encoder
I'm using STWINKT1 board connected to encoder to timer 3. I want to get a interrupt every time that the encoder count is 300, so the code in the interrupt is:
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Help to find an equivalent for encoder H9730 - 1926 (HEDS-9730)
I need help to identify the encoder from the photo. Seems H9730 is actually HEDS-9730 but I have no idea what the second number is (1926). I guess the resolution? I saw that even on heads there are ...
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Interrupted SSI clock sequence
I measured the following clock and data sequence (time axis is in microseconds) between a Beckhoff KL5001 encoder module and a 19-bit SSI encoder. Apparently the clock is interrupted 3 times before ...
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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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Rotary encoders to ensure 2 wheel robot goes straight!
I have successfully counted the rotary encoders on the wheel of my robot so this is not a problem.
My problem is what to do with this number.
Basically, the bigger problem is that I need my robot to ...
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Differential Manchester Encoding
I am trying to understand Differential Manchester Encoding. The way I understand it is that the representation depends on the previous bit. If the previous bit was 0 there is a transition, but if it ...
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Unusual Rotary Encoder Output
I'm trying to replace a rotary encoder with push switch from a Boss SE70 effects unit as the switch is broken; the same encoder is apparently used in a number of Roland products such as the JD-990, JV-...
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How to make my own sequence of numbers and letters in a seven segment display circuit? [closed]
In this circuit, I have connected a single switch to a priority encoder, which is then connected to some inverters, further connected to a binary decoder, then to some current limiting resistor which ...
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Downside/tradeoffs to clamping signals with zener diodes
I have a signal source that sends fast pulsing square waves in the MHz range (encoder pulses from a motor) down a long transmission line to a receiver. I have tried many solutions and different types ...
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STM32 timer shared input Pin (Encoder & PWM input modes)
Can I share the pin (PA0) between timers TIM2 & TIM5 (GPTIMs)?
Timers 2 and 5 can both use PA0 as an input, conveniently on ch1.
Is there any issue with configuring both of them to use PA0 as ch1 ...
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How to dampen/reduce oscillations from crosstalk in encoder signals
I have two encoders that emit A/B signals for a total of 4 wires. Not sure if this will be relevant but these encoders are not the same and have different output impedances and rise/fall time. I also ...
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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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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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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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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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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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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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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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How to precisely measure the speed of a BLDC motor with an encoder which has 1024 pulse per revolution
I am trying to control a BLDC motor with SVPWM based FOC method. I have a motor with a 1024 pulse encoder. I calculate speed in the encoder pulse interrupt. But I can't directly calculate d(encoder ...
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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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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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How to connect two FPGA boards - VHDL
(source: isabekov.pro)
Hi all,
I am trying to figure out a way to connect two fpga boards (like in the image) for a Morse code decoder/encoder. Our first plan was to make the decoding and the encoding ...
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Does EC11 Incremental Encoder need hardware debouncing and VCC for encoder?
I'm implementing an EC11E rotary encoder which has 3 pins + 2 pins for a switch. It seems like most of the projects I've seen online wire A/B and GND to the microcontroller, which to me, makes sense.
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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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What ASIC/MCU is in my keyboard?
I disassembled my unbranded USB keyboard to find out what ASIC/encoder/MCU is inside. The chip is (as expected) covered, like the following example:
How to find out which chip is underneath?
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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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Quadrature encoder - Most efficient software implementation
Simply put, I'm controlling a DC-motor with a dual-channel encoder with a microcontroller for a personal project, and I'm trying to find the "best" software-based implementation of the following state-...
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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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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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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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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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