开云体育

I have PCBs based on a Maxim part.? Works real great on the Oscope.? Have not tried it yet on BitX. It puts out a constant value with 1-100 mv input sin wave.?? I have put a pot for output

I actually like the idea of two separate platform paths. Ot keeps competition between the two alive but allows porting of code ideas from one path to another. It also gives new people a choice of

Thanks for all the suggestions around expanding the number of ports and processor capacity. I already have a port expander (8 bit) in one of my BITX, but this is not going to solve the problem of SRAM

Yeah, there are solder holes for replacing R1 and R2 with pots!

This module could potentially be used, by removing R1 and substituting a potentiometer:

Both are cool!? I'd probably want to put some knobs on the BitX Box to twirl. Radiomanjwt, do you have pix or schematic?? Where do you get the 3V?? It's own regulator? I always wanted one of these

Would something like this work??https://www.adafruit.com/product/1713

I am using an ssm2167 speech processor ic on a small breakout board, as it is surface mount, soldered to a piece of vero board which holds the rest of the components.It works well, and the chip is

A good friend of mine was fond of putting on the 'Irish' and saying "good t'inkin' O'Rourke - yer foired!" <grin>. That's the sort of t'inkin' (tinkering?) I like - fun indeed! :) 73 de ZL2DEX

Nice to see someone working on multiband. Wondering if you might share project.? I have built bandpass filter for 20m and rx is good. The lpf for 20 is causing an issue. High swr. Tried several lpf

Yes, a USB dongle on the RPi could listen to Bitx40 audio. Should work, and requires no new PC boards. Could use one of the many si5351 breakout boards with the RPi. But ?I'd tend to build a small PC

The only ADC needed would be for S-meter. Tune by mouse (dragging across beneath waterfall like websdr.com) or scroll-wheel, or keyboard to dialog box. Mono audio, so one channel of a USB dongle could

Sweeping? Band is 200kHz (or 300), audio is say 2kHz, so 100 (150) steps, enough time to process an display a waterfall of that audio and stitch it onto the previous ... should be doable :)

For another $5 you can go from the zero to the zero W and have wifi.? Then you can VNC into the pi and skip the HDMI.? I am using a zero W with the HAT from TAPR as a WSPR transmitter and remote op

If the code is in C then it remains in common with those using the Nano, and updates to one can be easily ported to the other. ?Perhaps in C but with hooks so parts of it can be called from python

Absloutely! though LCD support not necessary - display by the Pi's HDMI. 73...

You are correct about the 3.3V I/O and lack of ADC pins.? I imagine we'd design a special 'HAT' (as Pi daughterboards are often called) that contained an ADC like the one you suggested plus the

Greetings, all! I seem to have put a cat among some pigeons! :) My hope would be that they can fly ... me, I'm hobbled. Financially - I'm a pensioner, and my reserves have been pillaged by

At the bitx40 we built, the BFO frequency varies in the voice signal. I wonder if it is normal or if someone has ever faced this problem as he did it. Thank you!

Yes,?the?RPi?does not have an ADC, so you would need to add an external one. There are a number of options available from