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
12 views

SM5172 RF encoder replacement [on hold]

I searching the IC SM5172-L3, it's a RF Encoder where it was located in wireless remote control. I can't find it nowhere! Is there some other which can replace it?
0
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1answer
24 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
41 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 ...
0
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1answer
44 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 ...
0
votes
1answer
85 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
votes
1answer
48 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 ...
0
votes
2answers
36 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 ...
0
votes
0answers
21 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
87 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
26 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
215 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)? ...
0
votes
0answers
31 views

How to find out the voltage and current ratings of a rotary encoder

I've got a faulty 12mm 24 pulses rotary encoder with no dents that I would like to replace, it functions as a volume controller on my hifi system but it stopped working properly. There's nothing ...
0
votes
1answer
46 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 ...
0
votes
1answer
46 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 ...
0
votes
1answer
41 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
146 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
532 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
vote
1answer
61 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 ...
19
votes
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
566 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
54 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
896 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. ...
0
votes
2answers
75 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 ...
0
votes
1answer
973 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 ...
0
votes
1answer
110 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
votes
0answers
149 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 ...
0
votes
2answers
226 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.
2
votes
2answers
738 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
358 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
276 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 ...
1
vote
1answer
74 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
158 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. ...
0
votes
3answers
124 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 ...
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votes
2answers
323 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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votes
1answer
446 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 ...
0
votes
1answer
49 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
91 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
votes
1answer
384 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
votes
2answers
286 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
votes
4answers
203 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 ...
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votes
1answer
361 views

Encoder and decoder function [closed]

Can anyone explain the function of encoder and decoder with diagram.? Any help would be highly appreciated.
0
votes
1answer
85 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 ...
0
votes
1answer
997 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 ...
0
votes
1answer
70 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 ...
1
vote
4answers
183 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 ...
1
vote
1answer
203 views

Binary Encoder Circuit

How exactly would I go from 7 output lines to 127 outputs. Since you can encoder a value of 127 with 7 lines I would imagine this should be possible.
1
vote
4answers
123 views

Getting frequency of a signal from its phase

How Can I get the real time frequency of a signal from its encoder phase angle. The encoder gives us a triangular wave from (0-2*pi). If I use derivation, I get discontinuity which provoke spikes. ...
2
votes
1answer
118 views

Maximum rotation speed for a potentiometer?

After a slight purchasing mishap, I am to end up with an encoder whose max RPM is too low for the application for which it is to be used. To achieve roughly the same purpose (that is, sensing of an ...
1
vote
2answers
2k views

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 ...
2
votes
2answers
2k views

What is the use case difference/benefit of using a Gray code vs. Incremental rotary encoder

I am planning to build a small digital project where a rotary encoder would be ideal for sending "up/down signals" (e.g. scrolling through a list on screen). Are there any benefits of using a Gray ...