input rim

Contents

• input rim
  • features
  • self build encoder
  • absolute position
  • push action
  • mechanical
  • text
    • 5-Elements
    • 4-Elements

features

• easy smooth moving by hand
• automatic moving by hidden motor
• push action

self build encoder

on underside of rim is a black/white pattern printed.
(check that printing is really black for IR!!) then read with two reflective ir sensor. classical encoder gray-code pattern thing…

• Overview: Optical Sensors - Reflective
• VCNT2020 2,5x2mm SMD package

absolute position

for absolute position it would be possible to use a color sensor with an rainbow circle on the rim.

• AS7262
  • Adafruit
  • sparkfun
• APDS9960
  • Adafruit
  • sparkfun
• ISL29125
• BH1749NUC
• TCS34725

push action

ring could be mounted on small springs - this way the springs could be measured inductively. this could give a pressure reading.

• LDC1314 4-channel, 12-bit Inductance-to-Digital Converter with I2C for Inductive Sensing
• FDC2114 Noise-immune Capacitive Sensing Solution for Proximity Sensing

• FDC1004 4 Channel Capacitance to Digital Converter for Capacitive Sensing (Cap Sensing) Solutions

• where are the devices listed?
• TI forum - sensor FAQ

mechanical

bearing with rubber

text

5-Elements

| element | direction | | :——- | :——– | | wood | east | | fire | south | | earth | center | | metal | west | | water | north |

4-Elements

source