Re: Dirt cheap uBitx case
#ubitx
I'll be uploading a few more pics as I go along. The display is a tad bit too forward for the front panel so I'm flipping the header pins from the back to the front of that board that the LCD plugs into. That will give additional clearance.? I'd not recommend reusing the headers and to definitely use new ones instead. It wasn't worth the hassle and the ugly result.? The heatsinks on the finals also needed to be flipped upside down and slightly angled inwards towards the center of the board to avoid touching the case. I'll add a few strips of kapton tape where they are located to avoid any bumps to the case moving them. I'm still seeing conflicting information on the heatsinks making contact with the case, does anyone have definitive information about the tabs being at ground voltage level?? I'll be added a RJ45 jack for microphone/speaker/up/down (with the related component changes needed for dynamic mics) and a 2A fuse holder adjacent to the power input.? I'll use the provided power jack but will have a short tail to powerpole connectors. That's the extent at the moment I'll be deviating from the original design.?
Thanks to?Mike Woods - ZL1AXG for tossing my post up on his page here?? ?It was a surprise to see that while looking for additional ubitx hacks a few hours after I posted.??
@Joe - I'll be probably freeing some pins up by going with a I2C display later on
@John - They've got plenty more sitting there on the shelf for the same prices.? The place is a goldmine and has been in operation since 1971 - ?They also sell through ebay.??
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Re: The issues of the TDA2822
Skip,
For me obsessed in experimenting with receivers, the audio parts graduated from LM380 then smaller 386 and then someone
mentioned the TDA2822.. I always had a soft corner for National Semi but switched to TDA. I always worked on 12V and
the TDA in bridge mode. Compared to 386 the 2822 sounded warm and nice lows with 2W out.
Vaguely I remember blowing one to reverse polarity supply. One TDA melted my solderless bread board but survived. I now realise
that it IS designed for 9V or lower although it can take 15V max.
Raj
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At 09-03-18, you wrote: Raj, when you use the TDA 2822 in other designs what voltage are you running them at? Is it at the 9 volt dc via a voltage regulator?
Skip Davis, NC9O
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Re: uBITX Firmware CEC Version Added WSPR function, I am looking for a beta tester.
#ubitx
Hi Ian.
I would like to be a beta tester for the WSPR firmware. Just been playing with V1.05W, noticed a couple of problems.
For the uBITX to TX in WSPR mode the band your going to TX in needs to be selected first, maybe in WSPR mode the BPF selection is incorrect.
The other one is to do with the TX frequency. the display shows 14.097100 MHz which is the frequency I selected in uBITX manager, but the RF being transmitted is in fact 14.099330 MHz..?
I have attached my BTX file from uBITX manager.
Best 73 Philip g7jur.
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Re: The issues of the TDA2822
Raj, when you use the TDA 2822 in other designs what voltage are you running them at? Is it at the 9 volt dc via a voltage regulator?
Skip Davis, NC9O
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BITX QSO Afternoon/Night, Sunday, March 11, 3PM/7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere
BITX QSO Afternoon/Evening, Sunday, March 11, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.
Join us as we make contacts from BITX40 to BITX40 on 7.277 MHz in 40 meters!
This is a worldwide event for BITX40 stations starting at 7pm in each time zone. To participate, call CQ BITX on Sunday, starting at?3PM and/or 7PM?your local time. The BITX QSO Night continues through the evening and conditions usually improve after sunset, so it is worthwhile to participate later in the evening.
Suggested Best Operating Practices:
Work at QRP power levels unless conditions require more power.
Call and listen for CQ BITX on the hour and every quarter hour.
It is helpful if you call CQ BITX with your callsign, name and location.?
Repeat your callsign a number of times during your CQ BITX and during QSO's.
Start a QSO by confirming the callsign, location, name and signal report of the other operator.
Say the callsign, name and location of the other operator so others can hear.
If the frequency is busy, avoid long conversations.
After your initial QSO is complete, ask if there are any other stations who would like to contact.
Report your QSO's, discuss propagation, noise, signal reports, audio reports, antenna type, etc. in this thread.
This is an undirected, scheduled event.? The BITX QSO Night relies on you to call CQ BITX to initiate contacts with other stations, so warm up that final and transmit a few calls on Sunday evening.? Talk to you then!
--
John - WA2FZW
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Re: Raduino oscilators. 33mhz and 57mhz. Documentation says one thinng, but this is what I measured.
Sorry for the incomplete email.? Pushed the wrong button on the keyboard while still compiling this draft before any corrections..
OK.Let's see if I can make it easy.
Lets say that we have a 12 MHz carrier and we want to convert it to transmit to the 28 MHz band. We could either mix the 12 MHz carrier with a 16 MHz signal (12 MHz + 16 MHz = 28 MHz) or a 40 MHz (40 MHz - 12 MHz = 28 MHz). In the case of mixing the 12 MHz carrier with the 40 MHz signal we will also get 52 MHz which we do not require and which we will filter out.
Let's say that now we have a 12 MHz filter which passes the lower side-band and we want to mix the filter output signal to transmit on the 28 MHz band. Let's say that the carrier frequency is exactly 12 MHz and we modulate the carrier with a 1 kHz audio tone. In a normal AM transmitter, we end up with the carrier and two side bands, one which is 12 MHz + 1 kHz = 12,001,000 MHz which is the Upper Side Band (USB) and the other 12 Mhz - 1 kHz = 11.999,000 MHz which is the lower side band?
Now let's take the same example as above but the signals are passed through a filter which passes the lower side-band (LSB) (11,999,000 MHz in the example) and filters out the Upper Side-band (USB) (12,001,000 MHz).
The carrier is also attenuated somewhat by the filter as it is placed down the slope of the filter curve to cut the lower voice frequencies as we are not after generating a hi-fi signal and are not really required for intelligibility apart from other considerations while the carrier is further heavily attenuated in the balanced modulator. Theoretically, if the balanced modulator was perfectly balanced and everything screened, the carrier attenuation will be infinite, but practically it is attenuated to a very very low level as to be considered as being suppressed.
Now let's say that the carrier was not suppressed but the lower side-band was passed by the filter and we mix them with a 40 MHx oscillator. (Remember that the upper side-band was suppressed by the filter and theoretically is not present, leaving us with the 12 mHz carrier and the 11.999,000 MHz signals)
The output of the mixer will contain the 40 MHz oscillator, the 12 MHz carrier and the 11.999.000 MHz lower side-band including other mixer products which for the present purpose we shall ignore.
By using a balanced mixer as used in the 12 MHz side-band generator the 40 MHz signal can be cancelled (attenuated to a very low level) and we will have an output signal from the mixer of 40 MHz + 12 MHz = 52 MHz and 40 MHz - 12 MHz = 28.000,000 MHz and also 40 MHz + 11.999,000 MHz = 51.999,000 MHz and 40 MHz - 11.999,000 = 28.001,000 MHz.
However, since we used a balanced modulator at 12 MHz, the 12 MHz carrier was suppressed and only the lower side band was allowed to pass through, which simplifies the matter as when we mix the lower side band from the filter with the 40 MHz oscillator will will only get??40 MHz + 11.999,000 MHz = 51.999,000 MHz and 40 MHz - 11.999,000 = 28.001,000 MHz.
At the output of the mixer we put a filter to select our wanted 28 MHz signal and strip the unwanted 52 MHz signal.
This clearly shows how the lower side-band from the filter (11.999,000 MHz) in relation to the original carrier frequency of 12 MHz has been turned into an upper side-band by the mixer when we used an oscillator frequency for mixing higher then the output frequency required.
Now if we take the lower side band which is 11.999.000 Mhz and mix it with a 40 MHz oscillator, we can also get on the 50 MHz band, but in this case it is easy to see that we will still end up with a side-band transmission if you work out the simple mathematics.
Now let's say that instead of mixing our crystal filter output with 40 MHz, we mix it with 16 MHz to get on the 28 MHz band (16 MHz + 12 MHz = 28 MHz). But since we have suppressed the carrier and we only have an 11.999,000 MHz signal, 16 MHz + 11,999,000 = 27.999,000 signal which in this case will be outside the 28 MHz band but serves to illustrate our purpose. 16 MHz - 11.999,000 Mhz will also give us 4,001.000 MHz which we can easily filter out.
If our side-band filter passed the upper side-band, the opposite will be true
As you can see it is simple mathematics but may be difficult to understand without some numbers.
Hope this explained the difficulty.
Regards Lawrece
On Fri, Mar 9, 2018 at 12:39 PM, Lawrence Galea <9h1avlaw@...> wrote: OK. Let's see if I can make it easy.
Lets say that we have a 12 MHz carrier and we want to convert it to transmit to the 28 MHz band. We could either mix the 12 MHz carrier with a 16 MHz signal (12 MHz + 16 MHz = 28 MHz) or a 40 MHz (40 MHz - 12 MHz = 28 MHz).
Let's say that now we have a 12 MHz filter which passes the lower side band and want to mix the filter output signal to transmit on the 28 MHz band. Let's say that the carrier frequency is exactly 12 MHz and we modulate the carrier with a 1 kHz audio tone.
In a normal AM transmitter, we end up with the carrier and two side bands, one which is 12 MHz + 1 kHz = 12,001,000 MHz which is the Upper Side Band (USB) and the other 12 Mhz - 1 kHz = 11.999,000 MHz which is the lower side band
Now let's take the same example as above but the signals therough a filter which passes the lower sideband (LSB) (11,999,000 MHz in the example) and filters out the Upper Sideband (USB) (12,001,000 MHz) in this example.
The carrier is also attenuated somewhat by the filter as it is placed down the slope of the filter curve to cut the lower voice frequencies which are not re and further heavily attenuated in the balanced modulator. Theoretically, if the balanced modulator was perfectly balanced and everything screened, the carrier attenuation will be infinite, but practically it is attenuated to a very very low level as to be considered as being suppressed. Now let's say that the carrier was not suppressed but the lower sideband was still passed by the filter and the upper sideband was rejected we mix them with a 40 MHx oscillator.? The output of the mixer will contain the 40 MHz oscillator, the 12 MHz carrier and the 11.999.000 MHz lower sideband including other mixer products which for the present purpose we shall ignore. However, by using a balanced mixer as used in the 12 MHz sideband generator the 40MHz signal can be cancelled (attenuated to a very low level) and we will have an output signal from the mixer of 40 MHz + 12 MHz = 52 MHz and 40 MHz - 12 MHz = 28.000,000 MHz and also 40 MHz + 11.999,000 MHz = 51.999,000 MHz and 40 MHz - 11.999,000 = 28.001,000 MHz. However, since we used a balanced modulator at 12 MHz, the 12 MHz carrier was suppressed and only the lower side band was allowed to pass through, which simplifies the matter as when we mix the lower side band from the filter with the 40 MHz oscillator will will only get?
40 MHz + 11.999,000 MHz = 51.999,000 MHz and 40 MHz - 11.999,000 = 28.001,000 MHz.
At the output of the mixer we put a filter to select our wanted 28 MHz signal and strip the unwanted 52 MHz signal. This clearly shows how the lower sideband from the filter has been turned into an upper sideband by the mixer when we used an oscillator frequency for mixing higher then the output frequency required.. Now if we take the lower side band which is 11.999.000 Mhz and mix it with a 40 MHz oscillator, we can get?
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Re: Raduino oscilators. 33mhz and 57mhz. Documentation says one thinng, but this is what I measured.
OK. Let's see if I can make it easy.
Lets say that we have a 12 MHz carrier and we want to convert it to transmit to the 28 MHz band. We could either mix the 12 MHz carrier with a 16 MHz signal (12 MHz + 16 MHz = 28 MHz) or a 40 MHz (40 MHz - 12 MHz = 28 MHz).
Let's say that now we have a 12 MHz filter which passes the lower side band and want to mix the filter output signal to transmit on the 28 MHz band. Let's say that the carrier frequency is exactly 12 MHz and we modulate the carrier with a 1 kHz audio tone.
In a normal AM transmitter, we end up with the carrier and two side bands, one which is 12 MHz + 1 kHz = 12,001,000 MHz which is the Upper Side Band (USB) and the other 12 Mhz - 1 kHz = 11.999,000 MHz which is the lower side band
Now let's take the same example as above but the signals therough a filter which passes the lower sideband (LSB) (11,999,000 MHz in the example) and filters out the Upper Sideband (USB) (12,001,000 MHz) in this example.
The carrier is also attenuated somewhat by the filter as it is placed down the slope of the filter curve to cut the lower voice frequencies which are not re and further heavily attenuated in the balanced modulator. Theoretically, if the balanced modulator was perfectly balanced and everything screened, the carrier attenuation will be infinite, but practically it is attenuated to a very very low level as to be considered as being suppressed. Now let's say that the carrier was not suppressed but the lower sideband was still passed by the filter and the upper sideband was rejected we mix them with a 40 MHx oscillator.? The output of the mixer will contain the 40 MHz oscillator, the 12 MHz carrier and the 11.999.000 MHz lower sideband including other mixer products which for the present purpose we shall ignore. However, by using a balanced mixer as used in the 12 MHz sideband generator the 40MHz signal can be cancelled (attenuated to a very low level) and we will have an output signal from the mixer of 40 MHz + 12 MHz = 52 MHz and 40 MHz - 12 MHz = 28.000,000 MHz and also 40 MHz + 11.999,000 MHz = 51.999,000 MHz and 40 MHz - 11.999,000 = 28.001,000 MHz. However, since we used a balanced modulator at 12 MHz, the 12 MHz carrier was suppressed and only the lower side band was allowed to pass through, which simplifies the matter as when we mix the lower side band from the filter with the 40 MHz oscillator will will only get?
40 MHz + 11.999,000 MHz = 51.999,000 MHz and 40 MHz - 11.999,000 = 28.001,000 MHz.
At the output of the mixer we put a filter to select our wanted 28 MHz signal and strip the unwanted 52 MHz signal. This clearly shows how the lower sideband from the filter has been turned into an upper sideband by the mixer when we used an oscillator frequency for mixing higher then the output frequency required.. Now if we take the lower side band which is 11.999.000 Mhz and mix it with a 40 MHz oscillator, we can get?
On Wed, Mar 7, 2018 at 10:13 PM, Michael Shreeve <shreevester@...> wrote: Ok, checked out the BITX40 explanation, and clearly the uBITX is a completely different giraffe and requires different math. If someone even wanted to try to do that I'd be grateful. I guess I might be able to wrap my head around it.
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In the previous email, I am not sure why the PULSEVIEW screen looks fuzzy- however, on the actual PC screen, it is quite sharp and clear,
and the pic I posted was sharp and clear.
Something got fuzzy in the posting process.
Rod KM6SN
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Hi All,
KD8CEC software will run in a stand-alone separate Arduino Nano
which is not connected to a uBITX.
I have had occasions where I needed to look at the CAT serial
link, so I mounted a spare Nano on
perfboard so I could access the UART RX and TX lines, as well as
the Nano Reset line, and installed
the KD8CEC software on it. Test jig shown here:
and note the ESD ground plate underneath!
----------------------------------------------------------------------------------------------------------------------------------
Some time ago I? purchased a Saleae 8ch logic analyzer when they
were still cheap. I used it, and enjoyed it for about a year.
Then, an ESD accident blew the Saleae. I looked online and did
not like the new Saleae prices, so I purchased a cheap
Saleae clone for about $12. See
Unfortunately, the folks at Saleae got upset at all the clones,
and changed their software so that it would not work with the
clones.
So, I went to the USBee web site to get software, only to find
out they wanted $20 for it. I did not want to pay $20 for
proprietary software linked to one piece of hardware only.
After some digging I found what appears to be excellent open
source (FREE!) logic analyzer software called? PULSEVIEW and sigrok.
PULSEVIEW provides for decoding protocols, such as I2C, UART,
CAN, 1wire, and many more.
Sigrok is the command line version, and PULSEVIEW is the
GUI on top of the command line
that provides a graphical display of decoded serial link.
PULSEVIEW/sigrok supports an impressive list of hardware
analyzers. Furthermore, PULSEVIEW/sigrok supports
data collection from some digital mulit-meters, and digital
oscilloscope dongles...see:
Apparently some logic analyzers have an analog channel, and
PULSEVIEW can show the analog signal as you would see it on an
oscilloscope.
Here is an example PULSEVIEW screen showing a UART serial link
decoded.
Channel D0 is Nano UART RX, channel D1 is Nano UART TX, channel
D2 is Nano reset line:
 ?
Not bad for a $12 investment!!
------------------------------------------------------------------------
PULSEVIEW/sigrok installation instructions:
WINDOWS:
???
LINUX:
I use Linux, specifically LUBUNTU 16.04.This is how I installed
sigrok/PULSEVIEW:
Then, install the firmware for the USBee AX using these
instructions:
Use sudo to copy the attached file 99SaleaeLogic.rules into
/etc/udev/rules.d
Remember to add your username to the plugdev and dialout groups.
------------------------------------------------------------------------
Now you have a very effective logic analyzer for about $12 !!!
Have fun...
Rod KM6SN
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Re: Wiring of the CW jack
Hi Tim Here is a picture of the control wiring (without on/off connected) 73 Mike G0CVZ 
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Re: RD16HHF1 power curve flattening...some
No worries, thank you Simon for the information.
I haven't noticed the feedback issue on mine.
Not sure where it coming from since Q6 is in-powered in RX.?
Worse case we can put an emitter follower npn on the supply side of the SSM2167 and extract the T/R line from the raduino (I have done that on mine) or bring the TX supply and regulate to 5V.
I will check that issue here.
73, John (VK2ETA)
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Re: Raduino oscilators. 33mhz and 57mhz " . Documentation says one thing, but this is what I measured.
That's an excellent method to measure the frequency of the 25mhz oscillator.
If the receiver has sufficient low frequency audio response, you could monitor the speaker wires with a scope
and get sub hz accuracy when zero-beating.
I'll check my uBitx (tomorrow?), see how much warmup drift I can detect.
The 2.3khz drift (at 25mhz) you reported seems too large by a couple orders of magnitude.?
Jerry
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On Thu, Mar 8, 2018 at 07:55 pm, Michael Shreeve wrote:
I don't know if I responded to this. I thought I explained but then maybe not. What I have always done when there is no buffered output is 1 use a receiver and an "antenna" if you will, one that is near the raduino but not touching anything. 2 turn on a somewhat stable generator and, in my case right now, measure the generator frequency directly with a counter. I can hear that generator in the same receiver.. Zero beat the generator , which is being measured, with the 25 MHz signal emanating from the raduino. Turns out it did change as I indicated, merely from heating up. No direct coupling at all for this measurement. At least to the raduino. If I had a communications monitor I wouldn't need to measure the freq of the generator. Or some other stable generator source. Also, I need to try to determine just how accurate my counter is.?
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Re: Raduino oscilators. 33mhz and 57mhz " . Documentation says one thing, but this is what I measured.
I don't know if I responded to this. I thought I explained but then maybe not. What I have always done when there is no buffered output is 1 use a receiver and an "antenna" if you will, one that is near the raduino but not touching anything. 2 turn on a somewhat stable generator and, in my case right now, measure the generator frequency directly with a counter. I can hear that generator in the same receiver.. Zero beat the generator , which is being measured, with the 25 MHz signal emanating from the raduino. Turns out it did change as I indicated, merely from heating up. No direct coupling at all for this measurement. At least to the raduino. If I had a communications monitor I wouldn't need to measure the freq of the generator. Or some other stable generator source. Also, I need to try to determine just how accurate my counter is.?
On Wed, Mar 7, 2018 at 10:12 PM, Jerry Gaffke via Groups.Io <jgaffke@...> wrote: So did you measure the crystal directly?
If so, your probe likely modified the frequency a bit.
My calculation of 24.9991375 may be wrong for a number of reasons:
It assumed that your two readings of the three clocks were made while?
tuning through 10.0mhz in 50hz steps.? But we have since seen that there
is a bug in the code such that it would not make the LSB to USB transition while?
tuning in 50hz steps.? So not clear exactly what was going on there.
It assumes your rig was either uncalibrated (and thus si5351_vco==875.0mhz)
and that your probe on the crystal is not disturbing the crystal frequency.
Or that you are doing an si5351_setfreq() to one of the clock outputs of 25.0mhz and measuring that.
Jerry
On Wed, Mar 7, 2018 at 09:59 pm, Michael Shreeve wrote:
. . .
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?Does anybody have a diagram or description of the mic wire up for the uBITX? I am looking for the mic itself, not the mic jack on the transceiver. Most of the mic's I have dealt with have the MIC+ going to one side of the electret and MIC- or ground routing through the PTT switch when it is closed, completing the circuit. Looking at the uBITX schematic and a mic wireup for an older version of BITX from several years ago on the forum, what I think I am seeing is that the sleeve is providing a constant ground to both the MIC- side of the electret and one side of the PTT switch. The tip connects a constant output to the other side of the PTT switch and the ring is providing a constant output to the MIC+ side of the electret. It almost looks like the electret is an "always on" state but the output is not utilized until the separate PTT circuit is completed. Any help would be appreciated.
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Re: RD16HHF1 power curve flattening...some
Thanks John.?
I used the same board and similarly power from the regulated 5v line on the raduino. It also offboard and just inline with the mic line.
75k for compression and 1k for gating and 100k pot on output. At full output my audio was readable but distored based on the one audio check qso I had before I turned it down a bit.
I put a larger heatsink on the irf510 too to cater for the higher average output as the stock one was getting warm where previously it didnt.
A sideeffect of the mic being on all the time is that there is leakage through to the speaker and it causes some feedback if the mic is within 2 inches or so of the speaker. Not a big problem.
Sorry all for the off topic content!
Regards
Simon VK3ELH?
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Re: RD16HHF1 power curve flattening...some
Hello Simon,
I used the small circuit board as found on eBay. A search of "SSM2167 Microphone Preamplifier Board Preamp COMP Compression Module DC 3V-5V" will show you the module I used.
I simply connected the input to the mic, added a 4.7Kohms resistor between the mic input and the 5VDC (taken from the Raduino) for biasing the electret and put a 10Kohms potentiometer in the output to adjust the power level to the mic preamp stage.?
So I didn't modify the uBitx board, simply inserted in the circuit. There is most likely too much gain which is reduced back with the output potentiometer?, but I haven't received any negative feedback about the compressor except when I pushed the output potentiometer?too high.
I have since removed the "R1" resistor and replaced it with a 51K Ohms resistor to get a 4/1 compression factor, up from the 2/1 as delivered. I haven't tested that on air yet.
On your Bitx40 what values resistors do you have for compression and noise gating?
Picture attached.
All the best,
73, John (VK2ETA)
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Re: uBITX - U1 Getting Fried - possible cause
#ubitx
DUH!? I failed to read the datasheet!
Much obliged, sir.
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Re: uBITX - U1 Getting Fried - possible cause
#ubitx
Good analysis. Since the current surge is of short duration, the 1.2W series resistor may be overkill.
I propose scaling the resistor to 2R2 (2.2 ohms) and the capacitor to 220uf...? I will enjpy your analysis.? At my age, arithmetic is advanced math!
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Re: How to order a Raduino
Thanks, Mike. I just sent you some money for one of your assembled ubitx boards. I could assemble it myself but I just don't know where to get the time! tim ab0wr On Thu, 8 Mar 2018 14:07:47 -0800 "Michael Hagen" <motdog@...> wrote: I did it on an old Allard version. Use the library that is available,
and edit the prints to the LCDs.
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
Set up LCD and its I2C address.
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);
My boards got a dedicated 4 Pin Molex for I2C at 5V.
Find the library and run some examples to get started.
73's Mike
On 3/8/2018 1:09 PM, Tim Gorman wrote:
Mike,
Is there code out there for utilizing your RaduinoUMax with an I2C
lcd?
I'm running a bunch of jumpers from the Raduino to the lcd and it's
a mess. Running four jumpers would be a lot cleaner installation.
tim ab0wr
On Thu, 8 Mar 2018 10:31:48 -0800
"Michael Hagen" <motdog@...> wrote:
I have the "Better" Rauinos for BitX and uBit.
I have sold over 50 to folks on this list.
Shipping to foreign countries is usually $15-20. I can give you a
shipping price from the US Post.
Take a look at attached documents.
73's Mike, WA6ISP
On 3/8/2018 9:40 AM, kir@... wrote:
Hi guys,
As I have an old Bitx40 with analog VFO, I would order a Raduino.
How can I do that ? found no info.
I do not have the correct email.
Can you help ?
Tnx and 73's from Felix/ON4KIR
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Re: uBITX Firmware CEC Version Added WSPR function, I am looking for a beta tester.
#ubitx
Carlos
Thanks for trying test.
1.First, test with a communication program such as Ham radio deluxe or Wsjt-x to check the communication status.
2.Occasionally, such a problem can occur if the thickness of the USB cable is thin.
3.uBITX Firmware CEC Version may not be able to
CAT?
communicate when WSPR are used.
4.This is when you entered the WSPR menu.
please?Test and tell us your results.
Ian KD8CEC
Hello Ian.. I have the same problem....
?"Error Receive Length = 0/1027"
-- Best 73 KD8CEC / Ph.D ian lee kd8cec@...
(my blog)
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N1AFF - formerly KB1JPW
Raj vu2zap
Skip Davis
Michael Shreeve
Robert Ogburn