Topics

UBITX Assemly Wiki Page #ubitx

W7PEA
 

I started some rough notes on an assembly page right here on the group we can all update and maintain:
https://groups.io/g/BITX20/wiki/UBITX-Assembly

.. I'll do another round on it (its late) but feel free to make corrections, edits, or suggestions on this thread.

Thanks!
W7PEA - Patrick

w4rjp
 

Patrick:   Your idea of a stock uBitX wiring page is great.  I really like Mike ZL1AXG's uBitx.net website as it keeps me up-to-date with mods/issues/summaries/etc, but a  "stock" assembly page is important for uBitX newbies.  Received my uBitX in December. Browsing early uBitX threads, some builders had little or no difficulty with HF Signals wiring information, but as time went on more and more threads identified wiring, hardware, and sketch issues. While some highly customized their uBitXs from the get go, I learned it is sometimes better to stock build to insure the radio works before moving on with mods.

The attached began as a simple wiring diagram to assist (never intended to publish) in wiring the uBitX. While my uBitX is still mostly stock, over time I did revise the diagram to include a few options (I plan to pursue as time permits) as well as beneficial corrective actions identified by other builders. 

If you or others find errors please advise and will correct if it helps new builders.

73, Bob W4RJP 

Skip Davis
 

Very nice diagram Bob that will be very useful for new uBITX owners. 

Skip Davis, NC9O
847-331-4147

On Apr 23, 2018, at 08:30, w4rjp <pearsall20@...> wrote:

Patrick:   Your idea of a stock uBitX wiring page is great.  I really like Mike ZL1AXG's uBitx.net website as it keeps me up-to-date with mods/issues/summaries/etc, but a  "stock" assembly page is important for uBitX newbies.  Received my uBitX in December. Browsing early uBitX threads, some builders had little or no difficulty with HF Signals wiring information, but as time went on more and more threads identified wiring, hardware, and sketch issues. While some highly customized their uBitXs from the get go, I learned it is sometimes better to stock build to insure the radio works before moving on with mods.

The attached began as a simple wiring diagram to assist (never intended to publish) in wiring the uBitX. While my uBitX is still mostly stock, over time I did revise the diagram to include a few options (I plan to pursue as time permits) as well as beneficial corrective actions identified by other builders. 

If you or others find errors please advise and will correct if it helps new builders.

73, Bob W4RJP 
<uBITX_wireup V1.7.pdf>

Lee
 

I am putting my radio together and almost to the point of needing your wiring diagram.  Your colored wires make it look so easy and less confusing.  Fantastic work.  Thank you.  I have 1 request.   Could you maybe enlarge the microphone wiring to fit the open space and darken the lines.   It would make it easier on us with old eyes. 

w4rjp
 

Lee:  Thanks for the microphone suggestion. Snagged it from a web site as a raster image.  Converted it to match the wire-up diagram.

If you find anything else in error, please advise.

73, Bob W4RJP

Jonathan
 

Bob,

Nice diagram!   I had a question about your "N/C" notation on the switches.  In some cases the line between the pins marked with N/C is solid and dashed in others.  What is the intent of the notation?

Thanks

-Jonathan  KF6RTA

Jonathan
 

Sorry, should have said "sockets" instead of "switches".

-Jonathan

n5ib_2
 

Hi Bob,

Thanks for that great work to provide a clear diagram for the uBITX connections.

It highlights a point of possible confusion that will probably need to be clarified higher up the pay grades than we are :^))

Your diagram properly shows pin 1 of the 16-pin uBITX header to be not connected.
As indeed the uBITX PC board is physically made exactly that way.

But the PNG file schematics of the Raduino show pins 1 and 2 of that header connected together.
A check of a physical Raduino board confirms that connection.
And pin 2 provides the +12V line to the Raduino from the uBITX main board.

yet another But.... the PDF schematic files ubutxv3, ubitxv31, and ubitxv3-1 all show pin 1 as grounded.

No harm, no foul, as long as pin 1 remains physically "nc" on the uBITX main PCB.
But if those schematics portend a future revision which intends to ground that pin, that'll be an issue.

As an aside... if a revised main PCB were contemplated, using two adjacent pins for the +12 line would be a good idea from a reliability standpoint.

N5IB

W7PEA
 

This is great Bob, what is the original file format you're working in? Can you also share that in the files section and|or also make a PNG version available?

If the original version is in a format others can edit, it would be a nice jumping off point to show mods as well. 

I was going to suggest dating and versioning, but you already did that... what a pro!

Once there's a PNG version I can incorporate it into the assembly instructions.

Nice job!

MVS Sarma
 

Bob, Overall wiring and  a Nice presentation.
all the best
regfards
sarma
vu3zmv
 

Joe Puma
 

Nice work 



On Apr 23, 2018, at 3:18 AM, W7PEA <patrick@...> wrote:

I started some rough notes on an assembly page right here on the group we can all update and maintain:
https://groups.io/g/BITX20/wiki/UBITX-Assembly

.. I'll do another round on it (its late) but feel free to make corrections, edits, or suggestions on this thread.

Thanks!
W7PEA - Patrick

Jonathan
 

Bob,

The reason I was asking about the "N/C" notation on the sockets is that I recall some discussion of how to wire the sockets to avoid problems when you plug in a (audio-style) jack that is mono (only tip and barrel, no extra area for left/right).   My guess is that "N/C" means no connection.  However, sometimes the line between them was dotted and some are solid (all marked with N/C).   So I was confused...   It would be good if someone could clear that up.

Thanks

-Jonathan

a.vision
 

Normally closed ?



Sent from my Samsung Galaxy smartphone.

-------- Original message --------
From: Jonathan <jmcameron@...>
Date: 24/04/2018 18:44 (GMT+00:00)
To: BITX20@groups.io
Subject: Re: [BITX20] UBITX Assemly Wiki Page #ubitx

Bob,

The reason I was asking about the "N/C" notation on the sockets is that I recall some discussion of how to wire the sockets to avoid problems when you plug in a (audio-style) jack that is mono (only tip and barrel, no extra area for left/right).   My guess is that "N/C" means no connection.  However, sometimes the line between them was dotted and some are solid (all marked with N/C).   So I was confused...   It would be good if someone could clear that up.

Thanks

-Jonathan

w4rjp
 

Thanks to everyone for their accolades. Glad most find the wiring diagram of value. 

Patrick:  The original file is a CAD DWG. Writing it out as a PNG should be doable. Having it live on your Wiki with others contributing versions for the various sketches and mods would be outstanding.  I'll post a PNG version for you.

Jonathan: The dotted line in the jacks was a way to show a connection between the N/C (normally closed) pins.  Once a 3.5mm plug is inserted the N/C connections open.

Finally thanks to all who found errors in the original HF Signals schematic and wire-up.  Bringing those to the attention of the group made the process of creating the diagram much easier.

73, Bob W4RJP

Jonathan
 

Thanks Bob!  The "N/C" meaning "Normally Closed" makes sense.  Should have realized it myself!

-Jonathan

KE6BB
 

Really nice schematic, Bob.

It may be of interest to some that the position of the diodes relative to the fuses as shown does not provide reverse current protection unless your power supplies or power cords are also fused.  The diodes must be on the radio side of the fuses, not the power supply side.  As shown, they WILL provide some measure of high SWR protection.  Just how much high SWR protection is probably beyond topic to this thread.

Thank you for taking the time to make the schematic and for sharing it with us.  BTW, I just received my uBitX last week, and this is my first post.

--
Mark,
KE6BB

w4rjp
 

Patrick:   Attached is a PNG of the wire-up.  Hopefully this will work with WiKi.

73, Bob W4RJP

Mark:  The diode placement was from HF Signals information.   Not necessarily my particular favorite, either.

Jim Sheldon
 

I checked against the schematic V3 and measured from the audio connector's pins to the proper points on the components.  The volume control wiring in your diagram is wrong.  The green wire IS ground and connected to the proper point on the volume control as shown.  The yellow and orange wires are switched.  the pins of the connector from left to right as viewed from the front of the board are (verified with an ohm meter)
1 = microphone input - Purple wire
2 = microphone ground - Blue wire
3 = volume control ground - Green wire
4 = volume control high - Orange wire
5 = volume control mid (center) - Yellow wire
6 = ground - Red wire
7 = speaker high - Brown wire
8 = ground - Black wire

I have all of HF Signals version except Version 4.  The above wiring is correct and unchanged on the 3 version 1 boards I have 116/1, 212/1, 324/1, 933/2 and now 133/5.  I don't have either version 3 or version 4 boards but I hardly think the wiring to the audio plug would have changed for those 2 versions and then changed back in version 5.

The "Wiring Up" diagram that's currently on the HF Signals website has recently been changed and appears to be correct with respect to both the CW Jack and the Audio Plug.

Jim - W0EB

W7PEA
 

I updated the Assembly page with pictures, no making fun of my soldering. ;-)

I could use help with two things as I did not do a vanilla installation of these two.
1. The microphone 
2. The Keyer

If you did a no-modification build, please snap some pics and post them or send them to me and I'll do it.

Thanks!
W7PEA

Bo Barry <bobarr@...>
 

Can you verify that the orange PTT goes to the sleeve? It is shown to the tip on the Randino schematic I found
Bo W4GHV