Arduino Nano PI Main Discussion

[surfdetector]

My copy of the book has just arrived, so it is time to start reading

[Bodhi3]

I'd love to buy a copy of this book but Amazon says it's OUT OF STOCK. Isn't it on KDP?

[MartyJ1963]

Brilliant little book George! Had a read through it today and love the really clear schematic images. I will be reading it a bit more thorough when I have everything together to begin building. I'm really pleased with the detection range you have detailed in the book and I'm looking forward to this new and interesting project. Thanks again for the 'Gift' and congratulations on your book. Regards, Marty.

[Qiaozhi]

I'd love to buy a copy of this book but Amazon says it's OUT OF STOCK. Isn't it on KDP?

I assume you looked on the Amazon Italian site?
It's definitely not out of stock as it's a print-on-demand book.
https://www.amazon.it/s?k=arduino+na...ref=nb_sb_noss

Also there is no ebook ... before anyone asks.

[Carl-NC]

Yup, ordered mine yesterday.

[wallaby]

would it be possible to get a schematic in PDF form?

[Qiaozhi]

would it be possible to get a schematic in PDF form?

DipTrace does not have the facility to export a PDF file, but if you download DipTrace (it's FREE) and load the schematic, you can print it out.

[Bodhi3]

Very funny!

I've tried twice (on different days) on the first post link and Amazon.co.uk was saying "OUT OF STOCK" (anyway sometimes has happened to my KDP book too).
Now everything is OK and I've bought my copy!

Great job George!

Regards,
Leonardo

[Qiaozhi]

Very funny!

I've tried twice (on different days) on the first post link and Amazon.co.uk was saying "OUT OF STOCK" (anyway sometimes has happened to my KDP book too).
Now everything is OK and I've bought my copy!

Great job George!

Regards,
Leonardo

[surfdetector]

George,
In reading through the Sketch I have a question about the following line on page 18.

const byte syncDemodOn = LOW; // Sample gate turns on when input high

Should the description not be, // Sample gate turns on when input is low

[Qiaozhi]

George,
In reading through the Sketch I have a question about the following line on page 18.

const byte syncDemodOn = LOW; // Sample gate turns on when input high

Should the description not be, // Sample gate turns on when input is low

I thought you may have found an error, but in fact that is correct.

The syncDemodOn state needs to be LOW in order for the input to the sample gate to be HIGH. That's because the signal goes through a voltage converter circuit which inverts the state. The same applies to syncDemodOff. See Fig. 2-1.

If it had been an error, I was going to blame Andy's proofreading.

[surfdetector]

I thought you may have found an error, but in fact that is correct.

The syncDemodOn state needs to be LOW in order for the input to the sample gate to be HIGH. That's because the signal goes through a voltage converter circuit which inverts the state. The same applies to syncDemodOff. See Fig. 2-1.

If it had been an error, I was going to blame Andy's proofreading.

Thanks for the explanation, I was scratching my head.

[AK48]

another thread seems good : https://hack-review.com/software/ard...ctor-by-jorbi/

[Qiaozhi]

another thread seems good : https://hack-review.com/software/ard...ctor-by-jorbi/

Interesting ... I've not seen that link before.
Although the Arduino code is actually for a BFO design, even though he talks a lot about PI in the main text.

All the Arduino-based PI designs I've seen do not include an EFE sample. They also directly sample the preamp output, and with the Arduino's 10-bit ADC resolution they exhibit poor depth.

[wallaby]

George: In your opinion, what are the pros and cons of this detector vs the Voodoo project?