Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [rotary-encoder]

40 questions
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Can I use a motor as a rotary encoder?

Let me preface this by saying that I'm not an expert, nor do I conclusively understand how op-amps work, but I have a strong suspicion that this should be possible, at least crudely. I have this idea that by using op-amps to measure the voltage…
Isaac Walters
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Inexpensive approach to finding a shaft position with an absolute encoder

I need an absolute rotary encoder to monitor the position of a 2 inch shaft. I have access to the end of the shaft Hunting for a starting position may be very difficult, as the machine is very heavy and can't be moved by hand - this may mean I need…
sebastian323
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Is it possible that north and south poles of a disc-shaped magnet change position over time?

[See update at the bottom] We build brushless DC motors of about 1 kW power at 48 volts. In order to drive the motor, we need to know the rotor position and, to do that, we fit a disc-shaped magnet on the top of the shaft, and read the rotor…
linuxfan says Reinstate Monica
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Reducing the filter complexity for rotary encoders

I am using Bourns rotary encoders, specifically the PEC11R-4215F-S0024 part. In the datasheets, Bourns suggest a filter circuit as follows: I've used this filter in a previous PCB design, and it works quite well. No lost pulses, no double counts,…
Bram
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Raspberry Pi not reading rotary encoder accurately

I wish to write a program for my Raspberry pi that will print > when a rotary encoder is rotated clockwise and < when its rotated anti-clockwise. Based on code for Arduino, I wrote the following program: #include #include //…
Doron Behar
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Running a 12V motor on 9V battery and arduino and matlab implementation

I have a DC geared motor rated at 12V and 60 rpm . It has a quadrature encoder with 700 PPR. I connected it directly to a 9V battery (almost new) and wished to measure the rpm of that motor. To find the nature of the pulses generated by the encoder,…
Helix xxx
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Is there a rotary controller that can detect both X and Y axis of motion?

I'll preface this by saying that I know nothing about electronics and have never held a soldering iron in my entire life. I am a pathologist by profession. I am trying to design a controller that mimics the X- and Y- adjustment knob of my microscope…
user329958
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How to increase STM32 Timer (encoder mode) counter value?

I am developing mobile robot. Hear i required to read quadrature encoder.So i am using stm32F401 using 16bit timer(encoder mode) to read the count.After 65535 count goes to 0. My question is how to make the counter larger. Thanks
Saravana kannan
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Soldering information missing from datasheet - what can I assume?

Background I tested some Bourns PEC11L encoders before soldering - they were working fine. Once soldered to my PCB at 300C using Sn99.3,Cu0.7 solder, they stopped working. Looking at the datasheet, I see that I did it all wrong... (In case you're…
OutstandingBill
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BLDC motor for position control for brushed DC motors

I have done s SE survey of BLDC motors and figured out they are essentially stepper motors but aimed for continuous torque. Moreover they differ from brushed DC motors significantly in terms of control. I am building a linear rail for a camera (so…
user0193
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Optocoupler Input or Encoder Output Problem?

I have this basic circuit but it's doing my head in with the actual prototype: When LINK is open (not connected to the optocoupler), Encoder output works OK - it goes 0V and 5V. Also while LINK is open and if I put optocoupler cathode to ground,…
Ariel Narboada
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How is this encoder supposed to be wired?

I have this encoder: https://www.mouser.com/ProductDetail/Bourns/PEC12R-4020F-S0024?qs=sGAEpiMZZMsUJpHmmVieqHTo0n9kjhYO9zCZFTxUfRg%3D&countrycode=US¤cycode=USD and I am trying to figure out how it is supposed to be wired. I think the A & B…
RGB Engineer
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BLDC alignment of hall sensors and encoder

I am trying to build a BLDC motor controller using field oriented control. The motor I am going to use is equipped with hall sensors as well as with an incremental encoder that has 512 steps. I have implemented a SVPWM and the Clarke and Park…
T. Pluess
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How to tune this PID loop

I have a DC motor that is controlled by an FPGA and a L298N motor driver board. The FPGA generates a PWM signal based on feedback from a dual channel quadrature rotary encoder (1000ppr per channel). I have the code at the bottom of this post showing…
David777
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Need advice with PID loop on hardware

This is my first time using a PID control loop so I have a lot to learn. I will explain what I am trying to do before I ask any questions. I have an FPGA running a processing core that I made myself, which works fine. I then have a 24Vdc motor…
David777
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