New Optical Encoder for DDS

Optical Encoder

This is a New but surplus Optical encoder for use with my DDS

From what I guess it was a special made by Oak Grigsby,  it is not listed in their current offerings.
The case is plastic and inside there is a slotted wheel which passes through an optical detector. (See photo below)

There are 128 pulses per revolution (you can achieve 256 ticks per revolution with appropriate setup)

  • A mounting nut and washer included.
  • Pushbutton switch NOT included you will have to add your own (SPST-NO)

  • Pricing: SOLD OUT

    Installation instructions:
    Encoder Cnx
    The Encoder has 4 pins on the back, labeled: + A B -
    Connect Encoder pin "+" to +5v on the PCB
    Connect Encoder pins A, B to the holes marked A.B on the PCB photo above.
    Connect the encoder pin labeled "-" to ground.
    Connect the pushbutton switch pins to the holes makes PB-SW and GND

    Encoder Cnx

    You will need to connect the serial port and change some paramtertes in the micro. (No programming is required) Refer to the RS-232 manual on This page Change these parameters:

    Encoder Guts
    Inside of the encoder you can see the slotted disk which passes through the optial sensor.