How to Build and Code an Arduino VFO Si5351 PART-2

Рет қаралды 2,414

Күн бұрын

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 2
In this video we cover the breadboard layout, trouble shooting, downloading the Arduino IDE and uploading the code.
Downloads
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...

Пікірлер: 27

@johnwest7993 6 ай бұрын

Thank you. This video was just as clear, concise and thorough as the first one. Very impressive work. You asked for suggestions, and I do have one. Do a complete receiver just like this. You can leave out the 'box', as everyone has their own ideas about what they want to or can do. But your descriptions and comments of everything are the best I've seen on the Internet. So a complete series on the 'guts' of an entire receiver would be welcome, at least by me. I don't know if you would find that fun, or of value. But I'd certainly watch it, and probably build the rig, just as soon as I finish the VFO aspect of it. I already have some of the parts in stock, and the rest are on order. What I like best about your videos is that I understand what's being done, and why, so that instead of merely following directions I actually understand what has been done and why, and I can then expand upon it. I learn. ++

@M0XFXUK 6 ай бұрын

Hi John, I am glad you hear you liked the video. Yes I have to agree with you, there isn't much on KZfaq that goes into enough detail to help people build projects like this. I am chuffed to hear that you are building the VFO, let me know how you get on and I do my best to help if you run into any issues. Yes a receiver would make a perfect follow on project to the VFO. I really enjoy building radio gear too. Thank you for the suggestions. 73 John M0XFX

@BobMellor1954 6 ай бұрын

Thanks for this John, very interesting and most of all, vbery easy to understand, thank you 73 Bob

@M0XFXUK 6 ай бұрын

Hi Bob, I am glad you found this of interest. As I mentioned in the videos, I had a number of requests to make a VFO and I was hoping that it would be straight forward to understand. Im in the middle of part 3 and hope to have it upload by the weekend. Thank you for the feedback 73 John

@mikegeo408 5 ай бұрын

Thanks John. I’m just waiting on my shipment of components. Looking forward on assembling

@alibaba6194 26 күн бұрын

very good stuff ! Love & subscribe from Morocco !

@M0XFXUK 22 күн бұрын

Great to hear that you are enjoying the channel and greetings from the UK.

@golden-balls-radio 6 ай бұрын

Proper!

@toolmanchris 6 ай бұрын

An interesting series John. Not my cup of tea personally but very informative as usual 👍

@M0XFXUK 6 ай бұрын

Hi Chris, It's a pleasure as always having you stop by the channel. I am glad to hear that you found the video interesting. I am trying to mix the channel content up a bit, but don't worry I have a stack of radios that need fixing and have a number of videos in the pipeline. Best Regards John.

@GeorgeEI7KO 6 ай бұрын

Good stuff John boy.

@M0XFXUK 6 ай бұрын

Thanks George, I hope you are well mate. Don't worry I haven't forgotten about the Cobra.

@GeorgeEI7KO 6 ай бұрын

@@M0XFXUK no pressure John. You know that.

@radiotec76 4 ай бұрын

Very nice work. I have a TTGO board so I wonder if the board’s built in OLED display is accessed off of i2c.

@CBRadioWayBack10-4 6 ай бұрын

you source all the bits and develop a simple kit bundle for the purchaser to build in to their own project box and i'll be buying one.. just plug and play, bit of soldering and put in a suitable box of the buyers choice and i can see these selling.. especially with extra filter boards and such to make a nice high end RX.

@M0XFXUK 6 ай бұрын

Hi Mark, yes very good ideas. I was thinking of making up some PCB's for the VFO so people can put them together easily and it would make quite a neat job too. I agree good band pass filters would really make all the difference. Great food for thought, thanks for your input. Best Regards John

@CBRadioWayBack10-4 6 ай бұрын

Well sign me up if you do a run of Yoyo SDR kits, i'm sure i have a few project boxes just begging to be used, is there a provision for an external signal meter, like the £15 Yaesu ones from China ?? @@M0XFXUK

@paultomlinson528 6 ай бұрын

Love to use this in my new homebrew radio. Do you have plans for a bigger lcd?

@M0XFXUK 6 ай бұрын

Hi Paul, I think this would be perfect for home brew projects. Interesting question regarding the screen size, yes there are many screens that could be hooked up to the Nano and in different sizes. I will have a think about this and cover it in the next video. Thank you for your input. Best Regards John

@paultomlinson528 6 ай бұрын

@@M0XFXUK I am so going to use this.

@user-wh1ve6yo7w 6 ай бұрын

how many pulses per revolution can be applied to the encoder

@M0XFXUK 6 ай бұрын

Hi there, I am using a 100PPR quadrature encoder, so Arduino is count 200 pulses per revolution (I think that is right). I am not sure what the maximum speed the Arduino will read. Thank you for the question, I will check and look at this in the next video.

@user-se5jc3gw1y 6 ай бұрын

Is there any code in your project that would preclude the use of the older Arduino IDE (1.8.19)?

@M0XFXUK 6 ай бұрын

The sketch uses well established libraries so there shouldn't be a problem. I just compiled the sketch on version 1.8.19 and it seems fine. Are you having problems?

@user-se5jc3gw1y 5 ай бұрын

Not having problems, just curious as I've had problems in the past using different IDE revs from ones that other users have compiled their sketches under. Thank You!

@M0XFXUK 5 ай бұрын

@@user-se5jc3gw1y Hi Carl, no worries. The libraries used in the sketch are well established and date back a few years so you should be OK. If you run into any problems please let me know and I will do my best to help. Also this would be good for other people playing with the code so they know what to do if they run into the same problems. Thanks for the comment. best Regards John M0XFX.

@user-se5jc3gw1y 5 ай бұрын

Thanks John .... KL7MA