Build Instructions

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• 1

  Step 1

  Construct the circuit seen in the Kemani/Analog Front End Schematic.

  Instead of using the BOB-09816 OpAmp breakout modules, you may construct your own gain stages. The BOB-09816 (schematic) are simple non-inverting operation amplifier gain stages, with a dc bias at half Vcc.

  If you are using an Amani64 instead of the Kemani, you only need to build the analog portion of the circuit and connect the transmit line (pin 41 on the Kemani) to an Amani Dock of choice, as well as the receive line (Kemani pin 21).

• 2

  Step 2

  Connect the TX_TRIGGER line to Arduino pin 4. Connect RANGE_PWM to Arduino pin 9. Connect the GND line of the breadboard to the GND connection on the Arduino. (Ppower, GND)

  If you are using an Amani64 instead of the Kemani, simply seat the Amani on the Arduino. Define your Amani TX_TRIGGER and RANGE_PWM pins to match the Arduino signals. Amani pin 33 = Arduino pin 4, Amani pin 29.
• 3

  Step 3

  Connect an external DC power source to power jack J6 of your Kemani or Amani64.

  Technically you may power your Kemani or Amani64 from you Arduino. If you choose this option I highly advise that you do not rely on USB power alone as you are driving an analog stage. The Kemani, being a 5V core device can be powered from the 5V port of the Arduino. The Amani64 receives Arduino power via the JP2 setting.

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