Teensy SDR help

[jrprogrammer]

HI,
I'm looking for a SIMPLE SDR sketch! You have to crawl before you can walk, so I've attempted to use VE3MKC's version 1 SDR, with no success. I was trying to compile using Arduino 1.8.9 with no luck. Then my friend said I should try the older Arduino version since the sketch was written back in 2015, so he kindly sent me 1.6.3 and the matching teensyduino file. Neither Arduino version will compile. I only get a cryptic message "multiple copies found for SD.h". Removing the offending SD.h file doesn't help either.

I just want a simple SDR: Teensy 3.2, Teensy audio board, TFT display (ST7735S), Si5351, and an encoder. I don't need to record, keep time, or transmit.... This isn't rocket science, is it? Does anyone have such a sketch or .HEX file I can play with?

Thanks,
Jim

[DD4WH]

This should be pretty close to what you are looking for:

https://github.com/DD4WH/Teensy-SDR-Rx

Have a close look at the pdf first of all.

All the best,

Frank DD4WH

[DerekR]

You might also take a look at AudioSDR here. It is a single Audio Library object that contains a complete SDR software package, but it is designed expressly for f32 processing and therefore needs a T3.6 or T4. My current full system uses the T3.6, but I also have a T4 "barebones" AudioSDR WSPR (Weak Signal Propagation Reporter) receiver running 24/7 very successfully on 40m (without any user controls).

There is extensive documentation in the AudioSDR package.

Derek

[robjohn]

I found this website and author very helpful..
https://zl2ctm.blogspot.com/2018/03/...27447334353041

I've used the very basic code from this site to demod SSB using teensy3.6 and it works fine.

Rob