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

Filter by
Sorted by
Tagged with
5
votes
4answers
13k views

Wheel encoder using an IR sensor

I made a rotary encoder using a IR sensor and a wheel with printed black and white spokes. Everything seems to work but I'm wondering if there is a better way to code this. The IR signal looks ...
1
vote
2answers
953 views

Simulate Encoder Using Buttons

I want to simulate a simple encoder wheel with two buttons (one for up and one for down). The output of the encoder is as follows: I want to accomplish this without the use of a micro. I have a ...
1
vote
1answer
249 views

HOA0901 Wheel Encoder Circuit

I am trying to use the wheel encoder mentioned in the circuit but somehow i can't manage to understand why there is a full voltage drop in the IR led and why the resistors are not limiting that ...
1
vote
2answers
3k views

Interfacing HEDS 9700 optical encoder with AVR atmega32

I'm trying to interface an HEDS 9700 optical encoder using an HCTL-2020 IC (or anything else) with my Atmega ( atmega128, atmega32, atmega16, atmega8 or any AVR-family based microcontroller, don't ...
5
votes
6answers
13k views

How to interface a quadrature encoder with PIC?

I'm developing a prototype that uses a quadrature encoder to measure it's linear displacement. The encoder is attached to the prototype body and has a wheel in it's shaft. As the prototype moves ...
4
votes
2answers
2k views

Do two encoders connected to a microcontroller interfere with each other?

I connected two AMT 103 rotary encoders (mounted on two separate DC motors) to a dspic30f4011 and read the values using interrupts (instead of qei as the dspic only has one). However, the error in the ...
5
votes
1answer
139 views

State of the art for turbo decoding

I am currently taking an online course on probabilistic graphical models. In the section on belief propagation (BP), specifically loopy BP, reference was made to Robert Mc Eliece's 1988 paper Turbo ...
8
votes
3answers
9k views

Using a LED to transmit data

I am curious about the possibilities offered by LEDs to transmit data over a short range (2 or 3 meters), and what maximum data transmission rate can be expected from carefully chosen, but consumer-...
1
vote
2answers
299 views

What specification for IR communication to AV equipment?

I'd like to task a micro-controller to use it as a universal remote. What is the specification used for IR communication to AV equipment (TV's, etc.) and where can I find it?
2
votes
3answers
682 views

Motor controller software design

I have to design a PID controller for a differential drive robot. The hardware board consists of a AVR atmega168 running at 16mhz. Driven by two 24v scooter motors with 256 CPR encoders The motors ...
0
votes
2answers
450 views

Brushless Motor Encoder Read?

I have this a MegaMo SY3056 BLDC Spec.PDF And beside the cables that are connected to the ESC i have thses encoder cables: How can i read this encoder? and what values do i get? Can i know the ...
2
votes
4answers
6k views

Is there an IC for a 32:5 Encoder? [closed]

I need a part similar to a 74HC148 8:3 encoder, but which takes 32 input lines and encodes them to a 5 bit value. I can guarantee that only one of the 32 will be high at a time, so I don't even need ...
1
vote
5answers
9k views

Where to get stepper motor with integrated encoder [closed]

I'm looking for a stepper motor with an integrated high-resolution encoder for some force-feedback experimentation. Maybe something like this: http://www.opticalencoder.com/pdf/CM-300.pdf It need ...
27
votes
1answer
9k views

How does a ball mouse know the direction?

Foreach axis on a mechanical (ball) mouse there is an IR transmitter and receiver pair with a wheel that looks like having only simple slits. How is the direction calculated?
4
votes
1answer
439 views

Help to understand this encoder timer tick code

Could somebody please please help me understand the following code. Its running on atmega128 @ 16 Mhz. Its reading an encoder pulse. Uses timer3. The encoder CHA is connected to PIND2 (INT2) which ...
1
vote
6answers
7k views

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 ...
1
vote
2answers
622 views

wheel encoder to find direction of wheel

I am doing an 8th semester project but I need to use an IR transmitter and receiver to find the wheel direction of car. I would like 8051 assembly level code to find wheel direction. I am using two IR ...
2
votes
4answers
749 views

Determine the position of a ball joint by image processing

I am wondering if it is possible to sense the position of a ball joint using: A photodiode array from an optical mouse, embedded in the socket A specific pattern deposited onto the ball A processor ...
2
votes
3answers
4k views

how to count 2 wheel encoder signal?

I'm looking to a simple solution to keep the position of a robot. It has two DC motor and one wheel encoder for each. The encoder are incremental type. I need to be able to get the current count of ...
7
votes
3answers
2k views

How to have custom keyboard scancode set

I'm new to the hardware field in general. For one project I'm trying to create a custom keyboard that will have some extra keys, say 20-25 more than a standard keyboard. I've read about scan codes and ...
5
votes
1answer
540 views

Robot Encoder Position

I've been using a Motoman and I'm wondering what is the best way to recover when the encoder position has been lost. I've tried lining up all the reference marks on the joins but this can be a bit ...

1
3 4 5 6
7