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      1. Build Progress:
        • Build in Progress...
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      My Hyatt machine will assist in guitar speaker cabinet fabrication including single and multiple speaker (2, 4, and 6) designs.

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      The screw-driven Openbuilds Workbee 1010 was perfect.
      hyatt cad.png

      With limited workshop space, Hyatt will store inside my 9'x5' workbench and rise to working height with a mechanical lift system.
      hyatt lift.png

      Many speaker cabinet designs use finger joinery. Hyatt has a removal split work surface that enables vertical stock end milling. Using vertically-mounted Rockler Vacuum Clamps, vertical stock protrudes through the Hyatt base for stock-edge finger joint cutting.

      Hyatt steps up motion performance using JMC NEMA23 2NM integrated step-servo motors with driver and position encoder.

      I also wanted a machine that my granddaughter and wife could operate manually (ie no CAD/CAM/Sender). She and I work on various projects together.

      A variety of operator interface projects exist, mostly involve a laptop or RPi. I didn't want this for Hyatt. There's too much to know, the operating learning curve is too long. Hyatt must turn on and be ready to run in 5 seconds. Otherwise my now-impatient granddaughter will go back to playing computer games. I want her to experience the joy of precise machining and project builds.

      That being said, I set off to create an operator interface and machine control system using Bart Dring's GRBL Cypress PSoC5 port that includes the following.

      Hyatt Feature Set
      • CY8KIT-059 based design
      • 4 axis CNC controller, Dring GRBL port - PSoC HW pulse generation, debounce, interrupts
      • Spindle speed/direction control - PSoC PWM
      • Piezo element work piece probe - PSoC opamp, ADC, DAC comparator, interrupt
      • Motor drive current monitor - PSoC analog mux and ADC
      • Supply voltage monitor - PSoC ADC
      • WiFi link with webserver, OTA, flash filesystem, websockets, TCP-serial bridge using ESP8266 - PSoC USART
      Operator Interface
      • 12 illuminated buttons via I2C I/O port expanders - PSoC I2C Fixed master
      • Jog wheel with quad encoder - PSoC quad decoder
      • 20x4 LCD panel display - PSoC I2C Fixed master
      • 3.5" TFT 480x320 resistive touch screen display, attached to X axis gantry - PSoC USART
      • Real-time feed speed override - PSoC ADC
      • SDCard reader- PSoC SPI EmFile library
      • Wireless CNC pendant - DirecTV remote control - my custom IR decoder using PSoC digital logic
      Custom PCB board, 100x100mm 2 layer, mixed through and SMT parts, see holla2040/hyatt


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      My complete build progress is documented here, The Valve Studio WorkBee 1010 Build and holla2040/hyatt .

      I'm almost done and operational. Step-servo performance is unbelievable with 0.001mm positional accuracy (100x better that I need). See

      Project named after Dale Hyatt, the one of the original K&F (Kaufman and Fender) guitar amp cabinet makers. See "The Sound Heard 'Round the World", Richard Smith, p28.

      Attached Files:

      1. Special Notes

        I love the Hyatt operational simplicity. However that comes with a complexity of design that requires multi-discipline experience. I'm an embedded hardware designer with 25+ experience years, so digging into GRBL, PSoC, and circuit design is what I do.

        Hyatt's desired output, guitar speaker cabinets, is part of my true lifelong passion to learn every aspect of guitar amplifier design. This build lasted a year and I loved every minute of it. Its yet another step on my journey to Tonehenge.
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  • Build Details

    Build License:
    • MIT Licence (MIT)

    Reason for this Build

    I need a precise machine to eliminate fabrication variance when researching speaker cabinet design choices. If I'm evaluating tonal differences between cab A, B and C where A,B and C might be different material, thickness, joinery, etc. I don't want introduction of additional variables to due to fabrication differences.

    Inspired by

    Clearly the Openbuild's Workbee build videos.
  • Attached Files:

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