How to Build and Code an Arduino VFO Si5351 PART-4 of 4

[@IV3GFN]

Good evening John, I have been building a double conversion receiver using the Si5351 for about a year, finally I found your channel where I learned many things that I did not know before. Thanks for your work, 73 de IV3GFN 😊

[@MalcolmMurray-xm1so]

Many Thanks John for producing an excellent series of videos. My PC boards arrived yesterday and impressed with the quality of them. Just waiting now for the components to start the build. Its great that the code is available and makes this so flexible I can see its uses already in future projects

[@andyhunter5191]

Great videos on the Si5351 build and code. I ordered and recieved my PCB's from John and they really are nice quality.

[@DuanesMind]

Thanks for making the time to create these videos. I've been trying learn how the coding part works and how it fits with the hardware. These videos are an awesome learning tool!

[@casadeloboinnovacion7960]

Hi John, Great videos, organized and rich content! Wondering if any more Band Surfer PCBs are being made, if not would you kindly share the PCB details so we can have some made? Thanks in advance.

[@williammckee4369]

Great work!! I have watched and enjoyed your series on this subject. I would like to order at least 2 boards. I have already started collecting parts.

[@justme-n-gracie]

Very good instructional series! Thank you

[@paultomlinson528]

Absolutely brilliant, im so going to use this with my multi bitx project!

[@stevelewis121]

Hi John, awesome project! Is it possible to change the ILI9341 display pins in your sketch? I have a project with the TFT already connected to different pins and wanted to use this to try out your VFO.

[@williamglew2851]

thak you i look forward to making this

[@johnwest7993]

Thank you.

[@bob_mosavo]

Thanks 👍

[@DreamLab-zr2hq]

Ciao John, ti ho scritto sulla mail indicata in descrizione ma non ho ricevuto alcuna risposta....🤷‍♂

[@M0XFXUK]

Ciao, non ho ricevuto e-mail da te. Per favore, invia di nuovo. Questo è il mio indirizzo e-mail. [e-mail]

[@peterwebb2224]

Hi John, For your information, I have just tried compiling the code on my windows 11, machine using arduino ver 1.8.19 and I get the following errors: F:\Utils\m0xfx\SI5351_VFO_001\SI5351_VFO_001.ino:57:24: warning: overflow in implicit constant conversion [-Woverflow] int Cal_si5351 =(122360);// need to go through calibration routine to get this figure ^ F:\Utils\m0xfx\SI5351_VFO_001\SI5351_VFO_001.ino:78:36: warning: narrowing conversion of '1.0e+6' from 'double' to 'long int' inside { } [-Wnarrowing] long freq_rangeHz[3]{1e6,10e6,100e6}; ^ F:\Utils\m0xfx\SI5351_VFO_001\SI5351_VFO_001.ino:78:36: warning: narrowing conversion of '1.0e+7' from 'double' to 'long int' inside { } [-Wnarrowing] F:\Utils\m0xfx\SI5351_VFO_001\SI5351_VFO_001.ino:78:36: warning: narrowing conversion of '1.0e+8' from 'double' to 'long int' inside { } [-Wnarrowing] Best regards...........Peter

[@M0XFXUK]

Hi Peter Thank you for the detailed feedback, I will look into this. Quick question: what micro controller is the IDE set to when you try to compile? Also under Tool/Boards Manager search for "Arduino AVR Boards" I have version 1.8.6 installed and it's compiling.

[@M0XFXUK]

Hi Peter, I think that I have figured out the issue. Apologies it was an oversight on my part. I will update the code and links. Here's a quick fix. Note: This is for sketch "SI5351_VFO_001" only! On line 57: the integer type is defined wrongly. Replace the "int" with a "long" type variable, it should read long Cal_si5351 =(122360); . Also on line 78: comment out this array as it for the seven seg display and is not being used in this sketch. So it looks like this //long freq_rangeHz[3]{1e6,10e6,100e6}; The compiler seems to overlook the integer type issue on the later revs of the IDE and I'm not sure why, it could be that I have been using 32bit micro controllers with the IDE. Please let me know how you get on and thank you for bringing this to my attention Peter. Best Regards John

[@peterwebb2224]

@@M0XFXUK Hi John, Just tried your fix and it compiles ok, Thankyou. I know that with the Arduino that different versions of the libraries can give various compile issues, so it's nice to know what versions are being used in the code. Anyway excellent work . Best regards............Peter