• Prototype 1

    besenyeim • 04/07/2019 at 15:20 • 0 comments

    Today I tried this ugliness:

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  • PoC2

    besenyeim • 04/06/2019 at 19:33 • 0 comments

    New arrangement, ADC scanning. Noisy, but promising.

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  • PoC

    besenyeim • 04/06/2019 at 16:41 • 0 comments

    AFAIK today's capacitive and inductive encoders use continuous AC signal to measure the impedance of variable elements. They need dedicated analog circuits, tuning and close tolerance parts. These make them more expensive.

    BTW I'm not deeply familiar with analog circuits, so in my other project from last year I used a different approach. It is easier (for me) to understand.

    Now I tried this:

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  • What about...

    besenyeim • 04/06/2019 at 16:05 • 0 comments

    So, I like robotics. Pro robots usually use servo motors, they are expensive. Good quality motors are expensive, but decent brushed or brushless DC motors can be found for good price. For one-off projects, even scavanged parts can be used.

    High resolution encoders are also expensive, especially absolute scaled, and reliable ones. Cheaper encoders are only incremental and/or bulky. CUI's  (AMT series) encoders look nice, but the cca. 50 USD is still a solid investment for a hobbyist (you rarely need only one for a project). Can they be even cheaper? Two PCBs and an MCU cheap?

    There was an interesting experiment, even featured on hackaday blog.