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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0answers
21 views
Gray-code Encoder - Verilog
Given the truth table of gray-code encoder, how do I calculate the canonical forms for each output; w, x, y? I am trying to write the code in Verilog. I am very confused on where to start.
My ...
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0answers
18 views
Difference between encoding and decoding in DLD [closed]
I am search on google but not found any relevant material. I need some 3 to 4 differences, some diagram and some examples about encoding and decoding in digital logic design.
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2answers
73 views
Minimise backlash in DC geared motor
I am new here, I actually work on application programming.
As a hobby I started to work with arduino and dc motors. Soon I ended up with backlash problems. Right now I am using a rotary encoder which ...
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1answer
62 views
AS5048A SPI - 13bits instead of 14bits resolution
I'm trying to make a driver for as5048a (spi) on STM32f405rg
This magnetic encoder is supposed to have 14bits of resolution :
and the read package shows that the 2 MSB are parity and error flags
So ...
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1answer
37 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 ...
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0answers
41 views
Turning Optical Encoder into Digital Outputs
I've got a challenge... I'm working to build a custom arcade game. Specifically, this is an arcade version of the original Mario Kart. I've got an arcade steering setup that works off of an optical ...
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3answers
85 views
8-bit binary U/D counter with rotary encoder
Im trying to make 8-bit binary counter using CD4516 / HEF4516 (doesnt matter, both act same).
My circuit works well excepct one error.
I can successfully go from ...
0
votes
1answer
48 views
Input circuit to handle both single ended and differential motor encoders
I'm working on a motor controller design that I would like to be as flexible as possible without driving up my BOM cost and board area more than necessary. To that end, I would like to use a single ...
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1answer
58 views
calculate encoder period from motor rpm?
Let's say I have a stepper motor which rotate at a speed of 1000 RPM and I have an incremental encoder attached directly to the shaft with 4096 PPR (pulses per revolution).
How I can measure the ...
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1answer
56 views
Dc Motor Position Control
I am driving dc motor with drv8848. I send pwm pulse to the drv8848 and then ı read encoder value. My pwm frequency is 500 Hz. So here is my problem, pulse count is same but encoder value is ...
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1answer
99 views
Detect rotation direction of a rotary switch
Posted recently this: Detect rotation of a rotary switch
But I want to be more precise about what I'm trying to do.
I have a 1 pole 8 position rotary switch with continuous rotation, and I need an ...
0
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1answer
53 views
How to generate constant movement given variable opposing resistance?
I need to generate constant movement in one direction given a variable opposing force even while "stalled" (no net movement in either direction) and when the opposing force is greater than the force ...
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2answers
42 views
Effects on motor encoder by over-volting
I'm using Maxon RE-max 17 4.5W 12V DC motor with encoder attached for my research. Currently I'm using up to 18V for the voltage input to get a better rotation speed and torque.
My questions: Is this ...
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0answers
28 views
QEI module in lpc1768
I am working on lpc1768 qudrature encoder interface module. I am not able to get the velocity compare feature to work. I am able to read the velocity and but the the velocity interrupt is not asserted ...
2
votes
1answer
96 views
How to implement line code?
I am looking for an easy way to implement a line code (both the encode and decode parts). This could be something like Biphase Mark Code, Differential Manchester, or anything else that has the ...
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votes
1answer
34 views
Sony STR DN1030 2nd volume control using a second Vr Encoder
First off, I am very, very new to any electronic physics/engineering.
Here's my problem:
I want a second remote volume control for my receiver that is wired to my desk. (I have already managed to ...
1
vote
4answers
359 views
Interfacing multiple rotary encoders to a microcontroller
What, in your opinion, would be the most efficient way to interface muptiple (let's say, >20) incremental rotary encoders to GPIO-limited microcontroller (for example, ATxmega128A4U, 44 pin)?
...
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1answer
48 views
Sending serial signal of HT12A encoder by wire over 25 meters distance
This question has been asked many times, but I couldn't find something regarding sending out serial binary pulses from HT12A encoder over long distance.
The wire will be running beside of AC 220v ...
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1answer
52 views
Encoder/decoder for serial connection without separate clock?
I'm putting together a link where the physical layer is SPDIF transmitters and receivers. I control both sides of the link (ie it doesn't have to interoperate with any other equipment). I would like ...
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1answer
50 views
How to connect absolute encoder on the rotating shaft. Please see the three options?
Hi,
Here I have added 2 options for connecting encoder on shaft.
Motor, gearhead and shaft is connected using coupling. But where will be best place for encoder (To avoid backlash from coupling ...
5
votes
1answer
157 views
Encoder PCB design - grounding, noise and decoupling
Hi first time posting here. There always seems to be helpful answers and tips.
Okay my question is simply are there any glaring mistakes in my approach to the PCB layout (see image links below), I'm ...
11
votes
13answers
608 views
Tracking rotation with extremely high accuracy
I would like to track the angular position of a fairly slow motorized rotating arm (direct-drive; see illustration below) -- but require angular accuracy of under 0.05°, and similar resolution.
As ...
1
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1answer
85 views
Differences and conversion between encoding techniques (NRZI, Manchester, MLT3)
I'm currently reading a lot about different encoding techniques for data transmission, in particular ethernet, fiber (and usb). 10Base Tx ethernet uses Manchester encoding for data transmission. But ...
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2answers
2k views
How does a laser printer control the laser to produce such high resolutions?
I opened up a broken laser printer yesterday to find one of the important sections (this is an example photo from Google Images), trying to learn from the design of the laser+polygon mirror motor ...
5
votes
3answers
625 views
How these laser show systems work
I am trying to understand how laser show galvanometer systems like this one create high-resolution movement, and generate drawings of reasonable precision (w.r.t. minimum beam angular-deflection step ...
2
votes
3answers
56 views
Optic encoder - Rotation
In the following you can see the channel A ( above ) and the Channel B ( middle) output of an optic encoder that is connected on a rotating shaft.
My questions is: Does the impulse width impact ...
5
votes
4answers
1k views
How to achieve very accurate/fine rotation with motor
I am running an experiment where I need to rotate a lightweight dial (<5 grams, so very low torque requirement, and fairly slowly), but need to do very accurate, fine steps of 0.03 degrees.
...
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votes
2answers
77 views
rotary encoder, got a 20ppr but need more like 200 ppr [closed]
I'm a tinkerer who is attempting to turn a guitar pedal into a remote tempo control for a drum machine, which uses a rotary encoder. In place of the potentiometer in the guitar pedal, I have put in a ...
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1answer
2k views
How to connect 16x2 lcd to esp8266?
I have ESP8266-01 this model
I Updated the frimware to nodeMCU and uploaded the web server code and tested by blinking led via web browser. Now I want to test that if I can send text data from web ...
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1answer
114 views
Why are servo motors geting weaker in a few minutes?
What I am experianceing is very weird but I will try to explane it as best as I can.
I have a simple robot arm with 4 Degrees Of Freedom (DOF). This is not a robotics problem but thought it would be ...
0
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0answers
172 views
What happens when you use internal+external pull-up resistor?
I was working with an Arduino One and this rotary encoder from SparkFun. Then, for no good reason, I put three pull-up resistors, one for each input pin (pin 2, 3 & 4) facing the encoder, like ...
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2answers
351 views
How does sin cos encoder work?
Sin cos encoders are used in motors to determine position and direction of motor. However I am unable to understand its exact working.
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2answers
1k views
Making a robot go straight using encoder motors and micro-controller (Arduino)
Now I have a simple chassis with two wheels which are powered by encoder motors. I connected Arduino Uno with the chassis and made a simple program to just count the numbers of signals (in simple ...
2
votes
3answers
384 views
Where to place debouncing circuit for remote mounted buttons and rotary encoders
I have an application where a push button and mechanical grey-code rotary encoder(user inputs) need to mounted away from main pcb. 24" - 48" away. This is for space and packaging reasons.
Is it OK to ...
6
votes
2answers
299 views
What type of encoder is this (optical, magnetic, inductive… etc)? and how does it operate?
I have found this circuit mounted to a DC motor. It is probably an encoder but I don't know how it works. I have looked everywhere but I could not find a similar encoder assuming that this is in ...
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1answer
83 views
Absolute encoder or Incremental encoder?
I'm planning on making a robot whose exact location can be tracked, which would be appropriate to use-- an absolute encoder or an incremental encoder and convert the number of rotations to distance ...
3
votes
2answers
178 views
Help me identify this rotary encoder [closed]
I need help identifying this 360 degree rotary encoder on my Roland SC-880 rack synthesizer. This one has become 'jumpy' and Roland claims the part is discontinued. So my only choice is to replace it. ...
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3answers
137 views
Appropriate Method of Counting counts from a Quadrature Encoder
I'm using an Mbed to drive a DC motor which will follow a trapezoidal trajectory.
What is the most appropriate way to determine position from the quadrature encoder?
Should I use interrupts, or is ...
-1
votes
2answers
384 views
Design Priority Encoder using only NAND and NOR Gates
I'm trying to build an 8-to-3 priority encoder using only nand and nor gates. Below is a 4-2 priority encoder, however it is using only ands, ors, and nots. If I have specific activation levels (some ...
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1answer
502 views
Using HT12E/D with RX/TX 433Mhz modules
i have ht12d and ht12e ic's and rx tx 433Mhz modules. i arranged the ht12e to the output port of Microcontroller and connected the ht12e to transmitter and similarly to the recieving side. is it now ...
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1answer
54 views
LPI requirement on optical encoder
I am using the AEDR-8300 as a simple optical encoder solution. The part seems simple enough:
An LED emitter
Photodiodes that pick up the light that is reflected from a codewheel or black/white strip
...
1
vote
2answers
99 views
Two phase frequency doubling a rotary encoder
I have a 600ppr quadrature encoder that I would like to get the highest possible resolution out of. I need sub arc/second accuracy for my project.
I saw differential Manchester encoding as a solution ...
0
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1answer
426 views
UVC Compliant H264 Encoder for PAL/NTSC Analog Camera Modules
I've been looking for some weeks on a part/module and haven't found anything so far.
I've been experimenting with streaming techniques using Logitech C920 webcam.
This webcam has an embedded H264 ...
0
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2answers
323 views
Stepmotor closed loop - matching encoder and microstep resolution
I am trying to get a high accuracy and not so extremely high resolution motor to work.
It's a step motor with 200 steps/rev and the motor driver can compute up to 400x microstepping. We have an high ...
0
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4answers
222 views
Is it possible to use 2 rotary encoders at once?
I'm working on this project: http://www.corsaclube.com.br/viewtopic.php?t=102183
I'm basically installing an iPad mini on the dash of my new car, but I'm facing a problem:
The iPad doesn't offer ...
-3
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1answer
510 views
Encoder and decoder function [closed]
Can anyone explain the function of encoder and decoder with diagram.?
Any help would be highly appreciated.
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1answer
98 views
Can't seem to determine quadrature encoder resolution
I'm currently working on an autonomous terrain-mapping rover, and I've run into problems in the seemingly most straight-forward area: processing quadrature encoder data.
For any unfamiliar, a ...
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1answer
1k views
Optical encoder in Proteus
I am working on dc motor speed control project in proteus and for the feedback i am using optical encoder.Dc motor speed is calculated by counting pulses from encoder.
But i wanted to know what is ...
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1answer
73 views
Can a rotary incremental encoder, count more steps due to interferences
I have an incremental encoder having differential signals A-NotA, B-NotB I-NotI, that apparently randomly seems to count more impulses. It is possible to have more impulses due to electrical ...
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4answers
194 views
What are my options for interfacing **30** incremental encoders to an MCU?
Background: I am familiar with interfacing a few incremental/quadrature encoders to a single MCU chip. My go-to chip STM32F10x can decode 4-5 encoders even in a ...
