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Waleed's Scrapyard

Waleed's Scrapyard

Owned by Waleed Asim
Last updated: Feb 07, 2025
2 min read

  1. how to get accurate position reading? @waleed

    1. angular readings/sensors?

    2. linear displacement readings/sensors?

Encoder basics: Basics of How an Encoder Works | Encoder Basics | Encoder Whitepaper

  • encoder takes any motion and converts it to a usable electric signal ( i bet that's how to current pedal works)

  • wed be looking for specifically a rotary encoder (its exactly what you think it is)

  • we need a analog/absolute encoder; gives a continuous signal instead of only providing a signal during movement; a good resource: How Do Rotary Encoders Work? | Configurations & Output Types

    • “Absolute encoders are like the GPS of the encoder world. Each position of the encoder corresponds to a unique code or output. This means they can provide the exact position of the rotating shaft at any given time, without needing to reference a starting point.” from that source i mentioned

  • Look:

    image-20250207-013017.png

     

  • pros of encoder: fairly straightforward and easy to integrate/package, highly accurate (~<0.05 degrees), pretty durable

  • cons: not super duper cheap; upwards of 75$ cad not including tax, gonna need more processing from the output data (outputs from 0.8V to 3.3V), has power consumption needed from our precious precious already limited energy store

 

 

some possible models (literally pulling shit out of my ass, idk if these would work) : AMT22 Modular Absolute Encoders - Same Sky | Mouser,

 

Rotary Magnetic hall sensors:

Rotary potentiometer:

 

 

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