Ooops!? I totally overlooked the previous:

?I would like one of each board please. Happy to pay once info is posted available.

W9PDS

That could make sense as a very fun toy.?
A hackable 0-30 mhz receiver.
I'm not convinced it's a good fit as an add-on to the uBitx.

Jerry

On Tue, May 22, 2018 at 05:10 pm, Nick VK4PLN wrote:

https://vk4pln.blogspot.com.au/2018/03/raduinoi2c-board.html

Thanks Nick, I figured there would be more. do you have ordering info ?

73 Kees K5BCQ

I did an initial quick test of CAT with WSJT-X.? Changed frequency fine, but TUNE was not working correctly.? The first TUNE try would key the relay and produce output power, but subsequent tries were non-responsive.? ?Change frequency and repeat test with behavior.? Reload Ian's firmware and all is well.? ?I'll try to do more testing when I can break free (I just got home from work and literally had 10 minutes to test).? I may be missing something basic in my setup and testing.
Tom
AB7WT

I too got the display. A 5" model.
I stumbled with the examples. Googled for some useful graphics to use.?
All the nice S meter images had a needle in the image at zero and I gave up. I'd love to look over your efforts to see if I can get it going at least.

73, Bo W4GHV since '54

Your signal at 7074 is probably the carrier. The ubitx doesn't have the
best carrier suppression in the world. If your receiver is close to the
ubitx it will pick up the carrier being transmitted.

Are you sure the 7072 signal is 7072.4 and not 7072.3? The carrier
frequency of 7074000hz - 1708hz is 7072.292khz.

Could be bad opposite sideband suppression. Are you sure your BFO
frequency is set correctly?

tim ab0wr

On Tue, 22 May 2018 13:51:24 -0700
"Bo Barry" <bobarr@...> wrote:

I've made some successful contacts on FT8 and WSPR using my Raspberry
pi and posted a guide on how to do it.

However, monitoring its output on my Icom 7300 I see:

ubitx freq 7074.0,? audio transmitted freq USB 1.708kHz? ?so signal
should be at 7075.8 MHz On the Icom I see
7072.4, 7074.0, 7074.2 big signal, and 7075.8

Any ideas?
Bo W4GHV

https://vk4pln.blogspot.com.au/2018/03/raduinoi2c-board.html

Jerry,

Would the following make sense then (software mods and Si5351 i2c bus address aside for now):

- $37 Elektor SDR board?

SDR board RF input connected after the first IF filter (or before?), uBitx Si5351 clocks #0 and #1 disabled (2nd IF and BFO off), 192kHz I/Q audio out to Teensy audio input with modded SDR software.

Tx chain as standard uBitx.

So many toys, so little time.

73, John (VK2ETA)

I did make progress by turning the audio down. Power dropped from 7 to 4 watts but the undesired dropped significantly and the desired increased. Then made a 500 mile FT8 contact with the 4 watts.

I just had the RF gain way down to watch the signals.
Anxious to have a nearby ham listen for them.

I plan to put some type meter on the audio input to the rig. It appears to be critical for digital modes at least.

Thanks for input. Bo W4GHV?

开云体育

Are you using stereo headphones? If you have a mono plug in the jack your shorting the audio to ground. You need to use a TRS plug in the jack supplied with the UBITX.

Allen?

I AM 70. I like the challenge...keeps me sharp.

I've decided I want built-in USB and the fear of RFI problems is a challenge I'm willing to take on. There are numerous RFI sources in the Raduino, from the 16 mHz clock, its harmonics and divided sub-harmonics, the I2C? bus and the SPI bus, plus 3 oscillators in the Si5351 and all their cross-talk intermodulation products.. It's an RFI jungle. At some point this has to be dealt with and running away from it won't eliminate the issue.

The Mega uses an ARM that also has no EEPROM if my memory serves, so you need either an extra part or a mechanism to use Flash for dAta storage. I think the latter is workable for this applicstion. Besides, I've seen no Mega boards in a Nano footprint except the Protoneer, which is $15 shipped. In that price range there are better alternatives. The $2.50 Pill is very compelling.

Regards
Joe

Update:

Things are happening fast and I'm trying to keep it straight in my old head. Is this list complete relative to the various "Raduino" versions available today ? I may have left some off....... Anyone happen to have a matrix of the various options ?? (silly question).

$$ is defined as the --estimated-- $ to implement on your uBITX (new "Raduino" board, new microcontroller, new display, new extra parts, etc). Open to corrections/clarifications.

No$$ is defined as only requiring a firmware load for the existing Nano microcontroller
Lo$$ is defined as <$30
Med$$ is defined as >$30 & <$90
Hi$$ is defined as >$90
??$$ is I don't know

73 Kees K5BCQ

1) Original "Raduino" with a Nano Ver ? (base Farahan started with and probably what most uBITX units have today). No$$
2) Upgrade to #1 ?? Ver ?? No$$
3) Upgrade original "Raduino" Nano with firmware by Ian Lee, KD8CEC. (called Ver? 4.3 today) No$$?
4) "RaduinoUMAX" with firmware by Mike Hagen, WA6ISP, (more I/O). Lo$$?
5) "Raduino Protoneer" (Arduino Zero Compatible Nano-ARM, uses SAM21 microcontroller). Who was/is working on this one ?
? ? ?Lo$$
6) "Raduino Pill" by Joe, W3JDR (uses a STM32F103 "Blue Pill" microcontroller, lots more I/O). Lo$$
7) "RAdI2Cino" by Jim Sheldon, W0EB, uses the Nano. Lo$$
8) "BITeensio", this is the new one by Jim Sheldon, W0EB, more info coming. ??$$
9) "JackAl" board this is the "will blow your socks off" design recently announced at FDIM by Jack Purdum, W8TEE, and Al??
? ? ?Peter,??AC8GY (all the capability you should ever want, uses a Teensy 3.6 microcontroller and will cost "a few $$ more" but
? ? ?has?VERY impressive capabilities which highly depends on the guys writing the firmware (as do?ALL?the others). Hi$$
10) "KB1OIQ" by KB1OIQ has I2C display, supports Keypad and voice?output suitable for low/no vision operators. ??$$
11) "Alison TBD" by Alison, KB1GMX, uses the Nano and has no rotary encoder, less or no menu, more buttons. ??$$

Evan, the WX labeled audio chips can blow out if the voltage going to them is beyond their tolerance? If you had the volume pot wires switched, then you may have blown out the chip as soon as you put power to the rig. I soldered a 6 volt regulator in the amp's supply line before I put power to it and it's been purring along nicely for almost two months. When they blow, most people are putting in a socket so they can replace the chip easier and there are a few good options discussed here on the board. So, that's the recommendation.
73, Dan? W2DLC?

There has been issues with the wire-up documents, and I haven't kept up with the changes, so I may be wrong here.
but it looks like your yellow and orange wires are swapped on the audio gain pot.
Some one that has their working uBITX in front of them, could probably be more help then I am at the moment.


The orange range wire from the audio connector should be connected to the to the wiper on the potentiometer and the yellow wire to the hot end of the potentiometer.

Regards,
Gary

If you need phase information for a digital ham mode you can generate IQ locally in the baseband audio signal from the uBitx with the Hilbert Transform. Like in those old telephone modems. There may be advantages to doing it at IF (like before an AGC).

That was my understanding, reading between the lines in Jack's post:
? ??/g/BITX20/message/49882
I could be wrong.

Much of what they are doing could be done in a form factor to match the current Raduino,
so it's easily swapped in.? As per the last paragraph here:
? ??/g/BITX20/message/49519?
?
It's very easy and fun to speculate about what can be done.
I've been thinking about an ARM based Raduino for the last year and a half:
? ??/g/BITX20/message/19340

But have so much fun figuring out how I would cram a spectrum analyzer and VNA
and oscilloscope and ... into that Raduino that I never get around to actually doing anything.
Much more difficult to successfully do something..

Jerry, KE7ER

Hey, I'm new here. I just finished assembling my ubitx, and I was disappointed to find there was no audio. I double checked all my connections, and everything seems to be wired correctly.

I saw somewhere that the "WX" branded TDA2822M chips are of lower quality than others, and mine is a WX. Might this be the issue??