¿ªÔÆÌåÓý

https://www.adafruit.com/product/2885?gclid=Cj0KCQiAmZDxBRDIARIsABnkbYRg9juiv7J6cWfAg1uPyjYb8HqQTQIYUSIxcKSwYMQ4lNe2UFPbircaAi_fEALw_wcB _._ wrote:

If I could only find it for $5, locally it is around €25, on ebay and aliexpress ~$20 Rpi with wireless would be ideal for over the net SDR (thinking about setting up a satellite dish for Oscar

For me probably the #1 reason why I moved to STM. If you have some free time try the BMP, the "integrated" serial console is quite convenient, one cable less to get tangled ;) These days I mostly do

Jerry, You make a good point about being able to do software development right on the RPi. In your opinion, what are the RFI concerns about using the Pi-Zero? Al, N8WQ

You can also do it externally with a varactor diode¡­ but the onboard seems simpler at this point. Whats then really needed is a good separate/calibrated frequency counter, which could be integral to

I was indeed able to move tinySA Arduino code into PlatformIO, build and upload through STLink into the blue pill. Very nice to have real debugging possibilities On a side note: When I started with

PlatformIO + VSCode. It's sometimes a bit finicky but since I use VSCode for pretty much everything else these days, it's a good fit.

While it is possible to tune the analyzer and signal generator frequency using the two LO offset fields in tinySA.exe it would be nice if we could tune the frequency of the calibration output from

With the black magic probe or a STLINK-V2 indeed no need to upload via USB Are you using PlatformIO in VSCode? Or the Arduino debugger plugin? -- HBTE Files section: /g/HBTE/files

Yes, you can and should The SDO is SPI compatible so in tristate when the chip is not selected -- HBTE Files section: /g/HBTE/files Erik, PD0EK

Indeed, the $2 Blue Pill has two 12bit A/D's, good to 1 msps, up to 16 channels. A 72mhz 32bit ARM processor, 64kbytes of flash, 20kbytes of SRAM, lots of IO pins Runs on 3.3v, so no need for level

Well,? I would think the NANO is fast enough.? And now after your code cleanup it will fit fine. Yeah, yet another software download... I bought what I thought was a 3V Nano but it turned out to be

Oh, one more thing I thought about... SDO pin.. you hook both SDO Si pins to one Arduino pin??? Normally you shouldn't do that... I suppose only the RX Si really needs to output..? 73, Gary WB6OGD

Good point, hadn't looked at that yet because I had Nano compile problems? ;-) Yes, the PE4302 board has 10K pulldowns and gives good levels with a red LED. SI board..? well I do have level shift

If memory serves me right more bits, more channels and sampling speed up to 2M so not sure what you mean?

Just a note on the blue pill¡­ the A/D on that thing is not up to the nano spec. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch ¨C K9ZC

I have used the same modules many time and they work great. Two in series (for combined 64 dB attenuation) is less than 1 dB loss. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ

Is there any need for a bootloader except to enable firmware upload via usb port? None of mine have it and I see no need for it in my setup (VSCode - BMP debugger - BluePill). Did I miss something?

I tried the blue pill but most don't come with the maple bootloader so it's another step to take. But I agree the blue pill is a much better choice for the tinySA. Faster, cheaper and much more RAM

Jeorg Thanks for this info I think all the nano outputs could use a resistive level converter as the SI4432 has no pull down resistors on it's inputs -- HBTE Files section: