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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45 views

Turning a DC motor a set number of Rotations using an encoder [on hold]

I'm using an arduino UNO, and i want to turn a motor a set number of revolutions, i'm trying to read the clicks of the encoder which has a resolution of 360 clicks/ revolution, my logic is that i ...
3
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4answers
173 views

Dialing a miniaturized stargate

I want to build a miniaturized Stargate but I have no clue regarding the electronic part. The Stargate is a fixed circle with 9 chevrons (see links bellow). An inner circle is spinning inside the ...
0
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1answer
81 views

Netduino Interrupts Affected By PWM - Diagnosis of Issue

I've got a funny problem with interrupts and PWM signals that's causing false interrupts to trigger. What exactly is happening is that I'm using a hardware debounced quadrature rotary encoder. The ...
0
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1answer
30 views

design a 8 to 3, valid output - priority encoder with AND,OR,NOT Gates

I'm trying to implement a 8 to 3 priority encoder which worked quiet well. My function for the three outputs are: A0=e1+e3+e5+e7 A1=e2+e3+e6+e7 A2=e4+e5+e6+e7 Now I want to add an output which ...
0
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1answer
34 views

Coding a priority encoder

Let's say I have a 25bit priority encoder. So each input pin from \$i_{24}\$ to \$i_0\$ has its distinct priority in our encoder. That means that if more than one inputs are active, the encoder will ...
0
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1answer
38 views

Monitoring a fan with 2800 RPM with a Siemens 27-226 PLC

I have a fan that rotates at 2800 RPM. I need to make sure that the fan is operating. I need to monitor the fan. It has an output that gives a signal 2 times per rotation so it's 5600 pulses which is ...
0
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1answer
82 views

Motor/driver for smoothest and most constant speed

Which type of motor/controller can maintain the smoothest and most constant speed in the range 300 - 1000 rpm with minimal vibration? ie: low cogging torque, etc. I have an application in mind which ...
0
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1answer
73 views

Do any rotary encoders allow zero idle current

Many microcontrollers and logic devices (programmable or otherwise) are capable of drawing very little current when nothing is happening. If a double-throw switch is wired to such a device, then when ...
1
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1answer
52 views

Wiring up a Knitter-Switch rotary encoder

I have two MERP 12 24 126 GR rotary encoders from Knitter-Switch. The only information i can find regarding this encoder is here http://www.knitter-switch.com/pdf12/E-2012-MER12-MERP12illuminated.pdf ...
2
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2answers
53 views

Create a fake depth encoder signal on a surface system?

I am trying to create a test box which will do away with the actual depth encoder as it is awkward to have out all the time the encoder is similar to this: ...
0
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0answers
66 views

3A Back EMF H-Bridge with Encoder driver board to Arduino

Apologies for the probably strange title. I'm working on a robot from a previous student at Uni and there is very very little documentation on how it was previously done. H-Bridge x2 Encoder ...
3
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2answers
129 views

Incremental Encoder and Arduino

I have wired a 600 p/r incremental encoder to an Arduino Uno. My question is this: Given that the Arduino has a clock speed of 16Mhz and I really do not want to miss a single pulse I am creating a ...
0
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1answer
54 views

Handling large numbers of input contacts

I'm trying to interface a large number of contacts (<=1024) under velostat with an arduino DUE. I have a large array of pads and I want to detect when any one point goes high (think of this as a ...
3
votes
3answers
147 views

Motor Control with PMW or RPM on heavy robot

I'm going to try to explain my problem as clearly as I can. I have been building a robot that has four wheels, 2 motors and 2 free wheels. Its a differential drive system. ...
2
votes
1answer
425 views

STM32 Rotary Encoder with Hardware Interrupts

I'm trying to get a rotary encoder working on my STM32. I have channel A & B being pulled up to 3V and debounced with 1uF capacitors. The board has channel A & B connected to PA11 & ...
0
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0answers
39 views

Meaning of GS output parameter in TTL octal encoder (LS148)

LS148 encodes eight data lines to three-line (4-2-1) binary (octal). We had an experiment wherein there are eight push buttons corresponding to decimal inputs from 0 to 7. In our experiment, the state ...
1
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1answer
115 views

Whats the name of a BMW iDrive type of encoder? [closed]

I am looking for a component that some people call a 7 way encoder switch. Basically, if you look at the center piece of the BMW iDrive, its that. It's a knob looking piece that if you turn to the ...
0
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1answer
76 views

Measuring rotations problem with motor encoder

I have this motor encoder mounted on the back of a 120RPM motor which has a gearing of 298:1 ratio. The back shaft is directly from the motor, not through any gears. Im using an encoder disk that has ...
2
votes
2answers
134 views

Low cost high precision linear position sensor

I am trying to find a low cost high accuracy linear position sensor that can be used in a hobby 3D printer. Almost all current 3D printer designs rely on stepper motors to provide positioning but I ...
1
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0answers
96 views

Control Loop Frequency [closed]

I haven't started tuning/setting up my controller(s) yet, but already having trouble with the control loop frequency. This code shall later control the position of a X-Y stage. The code: ...
1
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5answers
182 views

Poor man large linear encoder

I'm looking for a way to build a cheap 1m linear encoder. Precision should be around 2cm (which is not really "precision"). Any advice will be welcome. @Joe Hass : yes it is moving. Not really fast. ...
0
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1answer
41 views

How IC encoder ΤΧ-2, encodes signals?

I 'm trying to figure out the way IC encoder ΤΧ-2, encodes signals. The procedure, if I am correct, is: Receives input data (DC signals). Generates digital pulses, via an internal oscillator. a. in ...
2
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4answers
129 views

Adding indicator LED to optointerruptor circuit?

This question relates to my earlier question on how to wire an optointerruptor:Figuring out wiring of optical encoder I was able to get the optointerruptor working using the circuit below. I wanted ...
0
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0answers
56 views

Signal encoding on Realtek TX2 IC [part 2]

The image below shows IC Realtek TX2 encoder (pinouts and block diagram), which is part of an RC car transmitter circuit. Datasheet refers: "The frequency of pulse depends on the local oscillator ...
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2answers
103 views

Figuring out wiring of optical encoder

I have a linear peristaltic pump (salvaged from medical equip. - likely used for dosing, etc). It uses a stepper motor and an optical shaft encoder. I have the motor working but I am confused about ...
0
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1answer
68 views

What will happen to the reading if the “A-connector” is grounded in an incremental encoder?

I have a machine, that the reading is around 50% of expectation. I guess maybe the "A-connector" is grounded accidentally during it is made. However, I cannot reach the wire. I don't have an extra ...
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1answer
83 views

Signal encoding on Realtek TX2 IC

I 'm trying to figure out the way IC TX2 encodes different signals (RIGHT, LEFT, FORWARD, BACKWARD, TURBO). I can understand that presence of voltage means an appropriate signal to be transmitted. ...
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votes
2answers
93 views

Defining the pins of Realtek TX2 IC

Can anyone explain clearly what is the purpose of SC and SO pins of TX2 encoder? Why SC isn't connected anywhere?
0
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3answers
85 views

Combine signals from two rotary incremental encoders to one output

There is some device controlled by (optical) rotary incremental encoder (which gives quadrature output - two channels with square shaped pulses and shifted between each other). I want to add another ...
0
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3answers
1k views

Motor speed control using arduino and quadrature encoders

I am trying to get precise control over the speed of rover 5 based robot. It has four PWM controlled motors and 4 Optical Quadrature Encoders. I am using 4-channel motor controller with rover 5 ...
6
votes
1answer
251 views

Weird servo mechanism

I want to use a servo taken by a radio-controlled car. However, I found out that wheels' rotation (front wheels) is not performed by a servo, but from a motor to move the wheels and a mechanism for ...
2
votes
1answer
521 views

RF Module Not Working

I'm working on RF Module(433MHz ) for Communication between Robot and controller. So I want to test this first. Here is the thing I've used two Encoders Named HT12E and HT12D which are WORKING Fine ...
2
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0answers
66 views

Gear motor with encoder: minimum drivable step

I am fancying this motor http://www.pololu.com/catalog/product/2271/specs to motorize an X-Y stage. (Alternative High rpm motors with high reduction ratio and high encoder counts/rev are welcome ;) ...
5
votes
3answers
246 views

What is the purpose of 8b/10b encoding?

In the physical layer of USB 3.0 there is an 8b/10b encoder. Wikipedia says that this eliminated DC offset, while the tutorial I am reading says it is a common encoding scheme in high-speed ...
1
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1answer
289 views

Can I use this rf module with HT12E and HT12D?

I have recently made RC car using HT12E and HT12D connected to a cheap ASK RF module of 433 MHz frequency,but it's range is not good only a few meters and also so prone to electrical noise generated ...
4
votes
1answer
171 views

What is the advantage of differential Manchester

I can see the advantage of Manchester code over NRZ: you get clock and data in one signal combined. But what does differential Manchester add to that?
3
votes
1answer
174 views

Optical linear encoder for motion tracking?

I need to find a cheap optical solution to measure the position of an object in relation to a surface. The object glides in a linear motion along an axis, around 30mm away from the surface. The ...
4
votes
1answer
208 views

What is this part? PN:R19F 2E

Mystery Encoder I think this is some sort of rotary encoder, but it doesn't seem to act like one (no quadrature output from the pins). Tests I've run: 5V input in each pin, monitoring the other ...
3
votes
2answers
407 views

FPGA encoder counter running away randomly

I am programming an Altera FPGA using Quartus II v9.0 to count encoder pulses and output that count to an external LabVIEW program (see diagram below). I was able to debug one issue with my code ...
0
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1answer
218 views

Quadrature counter on FPGA is running away

I am attempting to count pulses from a quadrature encoder in an Altera FPGA. I believe I have my counter set up correctly (circuit diagram below, following this tutorial), but when I turn my encoder ...
0
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2answers
144 views

What component (IC) to use for collecting A and !A signals into a single TTL signal?

I am building a circuit board to listen to quadrature encoder signals from a motor controller and send these signals on to an FPGA that will be used to count the pulses and direction. The signals ...
2
votes
1answer
207 views

RPM Measurement (rotary Encoder)

I am measuring Dc motor RPM using a rotary encoder(custom made).The input supply to the encoder is 3.3v and the encoder output(Sine wave) is given to the Schmitt trigger to get square shaped signal. I ...
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votes
1answer
233 views

4X2 Priority Encoder with priority I0>I2>I3>I1

I have to design a 4X2 priority encoder which has this priority (I0>I2>I3>I1). the problem is that the priority encoder concept is not very clear to me. I have googled but cant understand. Can anyone ...
1
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1answer
108 views

component to measure the passing of a striped string

Has anyone ever come across some sort of optical component that can count the stripes in a patterned string as the string is pulled through? Just curious if something like this exists or if the DIY ...
0
votes
1answer
157 views

How to implement a radial encoder with a diametrically magnetized magnet using a hall-effect sensor?

I want to implement a rotary encoder that doesn't use optical sensing or physical contacts. I found the following solution using a diametrically magnetized magnet on the shaft, and a dual axis hall ...
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2answers
113 views

Constructing an Encoder

I understand an Encoder is 2^n input lines and n output lines`. I want to construct an Encoder from scratch so I can understand how it works, so that I can construct any other Encoder in the future. ...
1
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0answers
232 views

Brushed DC motor with incremental encoder— How do I use it?

I have come across large brushed DC motor, a Dunkermotoren GR 53X30 with an incremental encoder attached. Here are the spec sheets for the motor and the encoder: ...
0
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2answers
111 views

Minimum tolerable signal to noise ratio in modern communication systems

What is the minimum tolerable SNR in today's (digital) communication systems for successful recovery of the message? I've heard that regular commercial systems can recover the message with a SNR as ...
2
votes
1answer
132 views

Wiring optical incremental encoder

I'm trying to connect an optical encoder (Bourns EN series) to AVR microcontroller, and a few things are not clear for me from the datasheet. At first, datasheet says that the maximum supply current ...
0
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1answer
133 views

Programmable Encoder, variable numbers of pulse/revolution!

Programmable Encoder, variable numbers of pulse/revolution! Hey everyone. I'm doing my final course work and I have a problem with an encoder. Well schematically I have to feedback a frequency ...