Signal Generator

Signal Generator from Stuff I've Already Made/Bought

• NANO-BKOUT
• 2x NewPot2
• PulseGen
• UNI-OPAMP-08 or ANA-SIG-CON
• AD9850 card on GRID49 card
• 0.96" I2C OLED card

NANO-BKOUT

• Arduino NANO Breakout board
• 5V Power Regulator
• Probably don't need all the connectors
  • Why not just install them?
  • Good for 5V power/ground distribution
• Install I2C connector
• USB connector

NewPot2

• Use 2x boards for menu control
• Used as 0.1" pitch connector to Encoders
• Install R1-R3 = 10K
• Don't install ATTiny85
• Don't install C1
• Don't install D/A converter

NewPot2 H1 Connector

1. Rotary Switch B
2. VCC
3. Unused
4. Rotary Switch A
5. Rotary Switch pushbutton
6. GND

PulseGen

• Two boards
  • Use 1 to drive square wave on BNC to 50 Ohm load
    • Install BNC, 74AC14, 249 Ohm Series resistors
    • Don't install oscillator parts
  • Use other to connect to BNC for Sine Wave output
    • Only install BNC

UNI-OPAMP-08

• Drive Sine Wave output
  • Route to PulseGen card for BNC use
• Use 100 MHz GBWP Op Amp
  • Disable all other channels

AD9850 Card on GRID 49 Card

Mechanicals

• Mount to Front Panel
  • 2x NewPot2
  • 0.96" I2C OLED card
• 49mm stack
  • NANO-BKOUT
  • UNI-OPAMP-08 or ANA-SIG-CON
  • AD9850 card on GRID49 card
• Front or Rear Panel
• 2x PulseGen - could be stacked or bolted individually

Software

• AD9850 Waveform Generator

<img src = "http://www.vwlowen.co.uk/arduino/AD9850-waveform-generator/AD9850-waveform-generator-circuit.png"></img>