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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44 views

Is it possible to implement a 3 Input Encoder?

I was want to implement a 3 input priority encoder. Is it possible to implement this by cascading two 2-1 encoders? If so how does this work? It also needs two outputs?
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Optical encoder from printer always has about 1.60V on output

I have disassembled HP DeskJet 3000 j310a. I've removed paper feeder encoder board (shown on image). The problem is that when I connected it to 3V3 supply (it has builtin resistor on LED side), it ...
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40 views

Dynamically setting address of HT12E with Raspberry Pi

I have a project where I need to send a wireless signal to one of several receivers to turn on an LED. One transmitter, several (many) receivers, each with an LED. The receivers need to have low ...
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30 views

8 pole-pairs BLDC sensored control design

I need to control a 16 poles BLDC motor, sensing the position of the rotor with an optical encoder that support 3 integrated commutation output pins (U,V,W), emulate the output of hall effect sensors. ...
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70 views

Stepper motor resolution calculation

I am not familiar on how to calculate the stepper motor resolution to operate with multi-turn absolute rotary encoder. Stepper motor details as follows, Total step - 600; speed - 160 pps; Motor type ...
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2answers
109 views

How do I move a motor to a desired angle using a motor encoder?

So I have this project, the goal is basically to be able to make a motor move to rotate a set of gears and move a panel attached to a hinge to a desired angle. I have a motor encoder attached to the ...
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29 views

What pattern can be assumed to write the functions of a 16x4 priority encoder?

How can we find the expressions of the solutions without using K-Map or the Tabulation method?
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94 views

Using motor encoder with VESC

I want to use this BLDC motor on a project. In its datasheet, the encoder pin sequence is shown as follows. I want to control this motor with a VESC. There is an overview of the board here. In it, ...
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47 views

Determining/Specing the proper stepper Motor

I am trying to properly spec a proper stepper motor for a project I am working on. I am attempting to provide roughly 3000 pounds of compressive force (about 13300 Newtons) using a p series NEMA 34 ...
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39 views

DC motor accuracy with encoder

I am building a coil winding machine and I've already set up something that works. I used two nema17 stepper motors and tb6600 stepper driver cards. The problem is that motors are seems to overheating ...
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56 views

How can I disconnect some wire connections automatically when a specific one is disconnected?

I have a selector switch that can select a 5V digital signal to the output or terminal C of the encoder to the output. It's simple so far. But my application requires that when I select digital signal ...
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67 views

Why we dont consider the complements of other inputs in encoder equations?

Consider the below diagram of the 8:3 encoder from this page. Above, n0 = I1 + I3 + I5 + I7 n1 = I2 + I3 + I6 + I7 n2 = I4 + I5 + I6 + I7 I was guessing why we dont consider complements ...
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What do you do to help you grasp a concept or understand something you're seeing for the very first time?

Often in industry you come across a lot of different devices or even concepts you're seeing/hearing for the very first time. Things like encoders, resolvers, PID, pressure transmitters etc. I would ...
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182 views

Reading a high-speed rotary encoder with a Raspberry Pi

I'm trying to setup a Raspberry Pi to measure the position and speed of 8 DC motors that all have incremental quadrature encoders. At full speed (unloaded), each encoder ticks at 3.3 kHz. I assume ...
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1answer
83 views

Need for MOSFET in encoder circuit?

I recently started to work on encoder sensors and circuits. I found one optical encoder sensor from vishay electronics that suits my requirement, I found a circuit diagram online and it works ...
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3answers
102 views

Determine angular position from two potentiometers

I am trying to generate a continuous angle based on the output of the two potentiometers that are inside my device. The pots are shifted by 180 degrees and are capable of spinning continuously. How ...
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60 views

How to connect a few shields correctly?

There are several shields on my PCB: shield on CAN-bus, on RS485, on Ethernet, on ENCODER motor signals. How do I correctly connect all these shields? If I use the star topology, which filters should ...
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83 views

TTL “radio-button” using priority encoder and latch

I'm liking this site and I am not always using it to just throw a question but to develop ideas all the way. First time I did that was on StackOverflow I need JSZip and gzip for my web page, and JSZip ...
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64 views

Conducted Noise On Earth Ground Created by Forklift Battery Charger

INTRO: I work for an AGV company trying to integrate an OEMs battery & charger into our application. I can't go into too much detail since I'm under and NDA, but I'll do my best. DESC. OF ...
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1answer
47 views

Scrolling wheel encoder with button push button action into wheel axis

I am looking for a wheel that you can push into as a button as well as scroll indefinitely in either direction. Here's the exact part I am talking about. I'm not sure exactly what it is called. The ...
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4k views

What advantages do the absolute encoders gain by employing Gray code transmission instead of binary code?

I have read about the Gray code, but in practice I don't get what is the advantage of it over the binary code. Some absolute encoder manufacturers offer both types so one has to decide before buying ...
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1answer
43 views

Confused with the time diagram and wiring for this SSI interface

I have an AEAT-6010/6012 10/12-bit magnetic absolute encoder and it has the following pin-outs: Since it is SSI but not SPI I dont use the CSn output and leave it. I supply 5V to the encoder and ...
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186 views

How it is possible to synchronise sensors?

I am wondering how sensors are usually synchronized in time. I would like to synchronize two sensors in order to be sure that at every time-stamp both of them are giving me a measure. What I saw that ...
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137 views

Schmitt Trigger Level Translation from Encoder

This is my first time using an encoder as well as a Schmitt trigger. Typically, I would do debouncing in software, but I want a hardware solution for the sake of learning how to do so. The encoder I ...
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131 views

How does this linear actuators know absolute position of their carriages?

As title, I can't find out how main system of this linear actuators knows each carriage absolute position. This system is iTRACK from Rockwell, but there are some other brands that do this. Here an ...
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65 views

How to carry quadrature encoder data using a single signal?

A quadrature encoder can be thought of as two switches, usually sharing one of the terminals, i.e. we have COM(mon), A and B. Is there some simple way of carrying its output on a single wire? How ...
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105 views

Are there Multi-Turn Absolute Encoders that Store the Number of Turns in Non-Volatile Manner?

I have been learning about absolute encoders, and am testing a multi-turn absolute encoder (link to datasheet is here). During testing, I realized that after shutting down the power, although the ...
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1answer
57 views

Help identifying pins in EVQV9C00116E rotary encoder

I'm trying to make a button box for a sim racing rig and need a few rotary encoders for menu browsing. I plan to connect it to an arduino but I can't seem to figure out how to wire things up. I have ...
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1answer
394 views

How to check if my quadrature encoder is broken or not?

I have purchased some cheap quadrature incremental encoders (YUMO E6A2-CW3C) for which I have found "a" data-sheet here. Now based on my limited knowledge the quadrature incremental encoders are ...
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4answers
646 views

How to make affordable DIY low-res absolute rotatory optical encoders with fibers? [closed]

I have zero knowledge of optics and want to make a very low resolution (~10°) absolute rotary optical encoder using rapid manufacturing (I have 3D printers, laser cutter, and desktop CNC). Digging the ...
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2answers
77 views

Avoid voltage peak / static discharge freezing arduino

I am building a speed-testing stand for electric wheelchairs with an arduino nano + rotary encoder. The wheelchair is put on cable caddies, which turn the rotary encoders via a belt. The setup itself ...
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215 views

Simplest way to count quadrature encoder counts [closed]

I need to count the pulses from a high-res quadrature encoder but the prohibitively high frequency means I can't use my main processor. I looked into the HCTL-2022 IC which does exactly what I need, ...
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111 views

Help understanding encoder

This circuit board is soldered at the back of a dc motor The motor has been removed and a magnetic disc is attached to the shaft and spins over these smd components. They seem to say A87L but I ...
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1answer
47 views

No. of comparators in Parallel ADC

I can't figure out why exactly the no. of comparators is (2^n)-1 in a parallel type ADC. The truth table (shown below) for a three bit priority encoder say that there must be at least one HIGH input ...
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1answer
80 views

What would be the difference between the output of a power bank and a laptop usb port? [closed]

I have an encoder which I have been successfully using when powered from my a USB2.0 outlet on my laptop. I need to be able to run it whilst disconnected from the laptop and so tried powering it from ...
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2answers
143 views

Rotary encoder sensor

Is there a way to get reading from rotary encoder without microcotroller? just simple circuit that count and increment, like op amp or 555 timer or logic gate . anything that u can help me .
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1answer
48 views

Can analogue Hall sensors be used in BLDC for static angle measurement?

Everything I have read on using Hall sensors with BLDC motors appears to use latching hall sensors which provide repeatable latching angles as the magnetic fields change at specific angles. I am ...
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1answer
273 views

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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2answers
69 views

Practical question on high resolution to composite/S-video

I read many resources on the internet talking about NTSC, PAL, timing and voltage levels. But I have specific practical question, and I can not find definite answer to it. There're very helpful posts ...
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1answer
133 views

Connecting luma only output to composite input

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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1answer
122 views

Non-systematic (7, 4) Hamming code encoder

I have to do the scheme of the non-systematic Hamming code encoder (not cyclic but classic). But I have not found any source where it would be written how to build a generating matrix and create a ...
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2answers
278 views

AD725: is it dot crawl - and what to do about it?

Device's datasheet says One well known distortion of composite video images is called dot crawl. It shows up as a moving dot pattern at the interface between two areas of different color. It is ...
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4answers
2k views

How to best clean this sealed mechanical rotary encoder / volume knob?

How can I best clean, replace or lubricate this fairly well sealed digital rotary mechanical encoder? The equipment operates, but the encoder is super finicky, often encoding in the wrong direction ...
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1answer
79 views

Two identical stepper motors behaving differently at higher (but below their rated) speeds

Note: My question might be short on specifics here when it comes to the motor-parameters, but I have been trying to understand a situation for the last 2~3 Weeks, and I still don't have an ...
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1answer
368 views

AD725ARZ wrong colors

I designed device based on AD725ARZ, datasheet is here. Device is built basing on the reference circuit diagram on page 12. TV is connected to composite output of the circuit. It does not have S-...
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1answer
122 views

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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2answers
157 views

HT12e: How is this a 2¹² encoder?

I am using HT12E, for a rf transmitter circuit. As per the datasheet HT12E is a 2¹² encoder. Ideally such an encoder must have 2¹² inputs and 12 outputs. In addition to that all the inputs should be ...
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23 views

avoid synthesizing priority encoder for onehot to binary conversion module

For https://github.com/jbush001/NyuziProcessor/blob/master/hardware/core/oh_to_idx.sv#L40 , why use OR operation to avoid synthesizing priority encoder ? if DIRECTION != "LSB0" and NUM_SIGNALS isn'...
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2answers
189 views

Anyone got these optical encoders working? [closed]

I got these Optical Encoders from a local vendor and connected it to my arduino in the following order; (+)----> 5v (-)---> Gnd (01)--->2 (02)--->3 But, it burnt and smoked out as soon as I ...
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596 views

Read Quadrature encoders over I2C bus

I need to add encoders to the 4 motors attached to a "remote" PCB. The remote PCB in question does not have microcontroller on it, but rather is connected to the microcontroller PCB with an I2C ...

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