Arduino Hookup Detail

The hookup of the Arduino entails the interconnetcs that go to the controls (Encoder, Step Rate, USB/LSB Select, VFO A/B Select and engaging the TUNE Tone) as well as the wiring to the OLED display itself and the Si5351.

The woring is straight forward and is shown in the table below:

Function Pin
Encoder A D2
Encoder B D3
Encoder Ground Ground
Si5351 SDA A4
Si5351 SCL A5
Si5351 Vin 5 DC
Si5351 Ground Ground
OLED LED 5 VDC
OLED SCL D13
OLED SDA D11
OLED Reset D8
OLED DC D9
OLED CS D10
Step Tuning Rate A3
USB/LSB Select A1
VF0 A/B Select D5
Tune Tone A2
Nano Vin 9 VDC via a 7809, 1A
Nano Ground Supply GND

 
The Contol wiring involves the Relays that switch voltages between transmit and receive as well as Relays that also control the RF Signals coming into the Paesano as well as those leaving. The Transmit Low Pass Filter is at all times connected to the IRF510 stage.