How to Build and Code an Arduino VFO Si5351 PART-3

In this series of videos I go though how to build a VFO based on the Arduino platform using the SI5351. The VFO includes IF offsets, frequency displays and a high speed rotary encoder. The VFO can be used for making home brew radio projects, tuning many types of radio equipment including SDR receivers. This VFO has good performance and is relatively cheap to build. No programming skills are required and I will supply the code for the project and go through how to configure and upload it. In the video I go through how the circuits work and cover troubleshooting to get the VFO working.
Part 3
In this video we look at a new PCB for the project, take a look at future options and look at mode sensing for LO frequency shifting.
Rev 2 of the code will be available to download in part 4
The details of how to get the PCB used in this video will also be available in part 4.
Downloads
Band Surfer VFO Schematic Download
drive.google.com/file/d/1sTjh...
VFO Schematic Download
drive.google.com/file/d/17vSC...
VFO Breadboard Layout Download
drive.google.com/file/d/1yMqR...
Arduino Sketch Download
drive.google.com/file/d/1LlNt...
Arduino NANO Clone Link
s.click.aliexpress.com/e/_Dm8...
SI5153 Breakout Board
s.click.aliexpress.com/e/_DeH...
OLED Display I2C
s.click.aliexpress.com/e/_Dn3...
Rotary Encoder 100PPR
s.click.aliexpress.com/e/_DBH...
AD831 Mixer
s.click.aliexpress.com/e/_DBN...
8 Digit Seven Segment Display MAX7219
s.click.aliexpress.com/e/_DBS...
SMA RG316 cables
s.click.aliexpress.com/e/_Dl0...
10dB SMA Attenuator
s.click.aliexpress.com/e/_DlH...

[@andyQ1981]

Thank you for sharing

[@houdielbow5770]

Fantastic work John, what a great series and confidence building style .

[@BrokenCircuitRanch]

wow, I have been thinking of reworking an old cb radio with one of these like your ham international jumbo. good stuff.

[@SimjetAU]

Great work John. Looks really good for any generic project. Top job and explanation I will email you...I want a few pcb's

[@rmwagar6524]

John, great series and I would like very much to have your PCB as soon as you have them available again. Do you have any Idea when they may be back in stock. I know that you asked for an email, however I didn't get a response to my email as of this time, so I'm trying this route.

[@M0XFXUK]

They will be available again soon and I have made some improvements. Keep an eye on the channel.

[@christopheriles1469]

Great video John! Can you put my name on one of the pcbs please? 😊