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Re: Teensy 3.5/3.6 upgrade for uBITX
Jack,
I agree that there are many people standing on Farhan's shoulders and he has certainly created/generated a huge interest in his uBIT-X design point..... key parameters being that the cost is being held low for a simple design to allow more people to try modifications if they want to ......AND he's allowing others to start small businesses and learn skills. I think the latter, in itself, is great.? Message counts of ~2000 per month definitely indicate a huge interest. My point was that there are many steps in the progression from the uBIT-X that arrived in the mailbox, TO one that has slight modifications, TO more comprehensive AGC hardware, audio amps, etc, TO SWR indications, 4 line displays, more keyer features, TO DSP and other SW defined modes, RPi, Teensy 3.5/3.6, large touch screens, etc ......you get the idea. Many options. The point is that you can take the path and get off at any step. I personally want to go as far as I feel makes sense to me (staying with the Nano or an Arduino based derivative and basically "Keeping It Simple") with a result that I think I can reach, and a Transceiver I will/can use. Some of the guys that want to Hack-to-the- Max ....more power to them but the number of followers will drop off pretty quickly and I for one will become a (maybe) drooler, not a follower.? ? 73 Kees K5BCQ |
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Re: UBITX Assemly Wiki Page
#ubitx
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 |
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Re: KD8CEC 1.072 download
William I use git for version control, but it seems to be difficult to trace history when the file name changes. Instead, I will create a separate file to keep track of which files have changed each time I deploy. All filenames are now cleaned up. Since Version 1.070, there was work such as splitting and merging files to support various hardware. I will publish Version 1.073 (Beta) within a day. Thank you for testing the firmware. Ian KD8CEC 2018-04-24 9:31 GMT+09:00 K9HZ <bill@...>:
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Re: Low mic gain, was, show your mic
Gordon Gibby
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From: [email protected] <[email protected]> on behalf of MAX <max@...>
Sent: Monday, April 23, 2018 8:29:23 PM To: [email protected] Subject: Re: [BITX20] Low mic gain, was, show your mic ?
Thank you Gordon. ? Humbled. ? Max K 4 O D S. ? I've Never Lost the Wonder. ? Antique Electronics Site: ? ? From: [email protected] [mailto:[email protected]]
On Behalf Of Gordon Gibby ? Max, your web site is very impressive! ? great work!! ?
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Re: KD8CEC 1.072 download
¿ªÔÆÌåÓýIan... would you PLEASE consider writing the version number in the file name of the code? ?That way different versions can be saved easily in the Arduino ISD.?Dr.?William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton - J68HZ Soufriere, St. Lucia W.I. Rent it: email:??bill@... ? On Apr 22, 2018, at 2:50 PM, Ian Lee <kd8cec@...> wrote:
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Re: Low mic gain, was, show your mic
MAX
¿ªÔÆÌåÓýThank you Gordon. ? Humbled. ? Max K 4 O D S. ? I've Never Lost the Wonder. ? Antique Electronics Site: ? ? From: [email protected] [mailto:[email protected]] On Behalf Of Gordon Gibby
Sent: Sunday, April 22, 2018 10:23 PM To: [email protected] Subject: Re: [BITX20] Low mic gain, was, show your mic ? Max, your web site is very impressive! ? great work!! ?
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Apology
MAX
I wish to apologize for my statements on the list last night. I'm not
going to make excuses. I shouldn't have said what I said and I know it. I'm likely to ask some stupid questions as I go along and I hope you all will be patient with me. Red in the face. 73. Max. K 4 O DS. P. S. I was not drinking. I've Never Lost the Wonder. Email: max@... Vacuum Tube Site: Transistor site: Woodworking site: Music site: To subscribe to the fun with transistors group send an email to. funwithtransistors-subscribe@... To subscribe to the fun with tubes group send an email to, funwithtubes-subscribe@... To subscribe to the fun with wood group send a blank email to funwithwood-subscribe@... |
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Re: show your mic
Jack Purdum
Yep, with a #2 on it.
Jack, W8TEE
On Monday, April 23, 2018, 8:13:21 PM EDT, Paul Schumacher via Groups.Io <wnpauls@...> wrote:
was it yellow?
Paul
On Monday, April 23, 2018, 5:08:09 PM PDT, Jack Purdum via Groups.Io <jjpurdum@...> wrote:
Back when I was in school, I once wrote an essay with a manual graphite display generator.
Jack, W8TEE
On Monday, April 23, 2018, 7:01:26 PM EDT, William Cullison <wa8vih@...> wrote:
I made one from two carbon blocks, in a vertical configuration, with a dimpled area and a pencil sharpened at both ends. On Mon, Apr 23, 2018 at 4:07 PM, Dexter N Muir <dexy@...> wrote:
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Re: Practical CW Operation?
#ubitxcw
I put a SotaBeams DSP Audio Filter into my BITX40 and it works great. ?I have a 2nd one that I intend to use for my uBITX.
If you don't want to fuss with installing it in the rig you can get an enclosure for the filter and use it externally on different rigs. These filters outperform any active audio filter I have ever used.? There is also a small circuit board that is available from QRP Guys for the W0EB uBITX CW conditioning adaptor. This helps to make the CW keying more reliable.? |
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Re: Teensy 3.5/3.6 upgrade for uBITX
¿ªÔÆÌåÓýJackWell said. New tech license holders have a low cost incentive to get their general ticket and be able to join the community without fear of a steep investment.? Art - N2AJO? On Apr 23, 2018, at 8:05 PM, Jack Purdum via Groups.Io <jjpurdum@...> wrote:
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Re: show your mic
was it yellow?
Paul
On Monday, April 23, 2018, 5:08:09 PM PDT, Jack Purdum via Groups.Io <jjpurdum@...> wrote:
Back when I was in school, I once wrote an essay with a manual graphite display generator.
Jack, W8TEE
On Monday, April 23, 2018, 7:01:26 PM EDT, William Cullison <wa8vih@...> wrote:
I made one from two carbon blocks, in a vertical configuration, with a dimpled area and a pencil sharpened at both ends. On Mon, Apr 23, 2018 at 4:07 PM, Dexter N Muir <dexy@...> wrote:
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Re: show your mic
Jack Purdum
Back when I was in school, I once wrote an essay with a manual graphite display generator.
Jack, W8TEE
On Monday, April 23, 2018, 7:01:26 PM EDT, William Cullison <wa8vih@...> wrote:
I made one from two carbon blocks, in a vertical configuration, with a dimpled area and a pencil sharpened at both ends. On Mon, Apr 23, 2018 at 4:07 PM, Dexter N Muir <dexy@...> wrote:
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Re: Teensy 3.5/3.6 upgrade for uBITX
Jack Purdum
I said almost the same thing a day or two ago...it has some really nice features, like a 12-bit ADC (4096 instead of 1024). Another important plus is that it can be programmed and run in the Arduino IDE.
Jack, W8TEE
On Monday, April 23, 2018, 7:01:53 PM EDT, Kees T <windy10605@...> wrote:
In keeping in line with Farhan's $100 goal for the Transceiver, I would seriously look at using the "Protoneer" mentioned by some others. It has the "Nano" form factor, is Arduino Zero based, runs at 3x the Nano speed, has 8x the Nano flash memory, 16x the Nano RAM, and has a DAC. Seems like that is a great opportunity to sweep in some open source code like that K3NG has for his keyer, other modes of operation, and many, many, more features over time. 256KB of flash memory is a LOT of available space. The Protoneer is $10 and you can get a group together to save on the $5 postage from NZ. I'm sure there are plenty of firmware writers out there. 73 Kees K5BCQ |
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Re: Teensy 3.5/3.6 upgrade for uBITX
Jack Purdum
I see the complexity and cost growing exponentially. That's fine but I
really don't see the uBIT-X as suited for going in that direction.??
It depends.? If you can fabricate a transceiver that competes with a rig costing 3x as much, why not? If your interest is hacking and DSP, why not? If you are trying to improve a rig with new/better features, why not? If you can have something that's better than, say an RS-918 at half the price, why not? Have you noticed how many people are standing on Farhan's shoulders and making his work even better? Also, an exponential cost function is probably not the case for most of the experiments that are going on right now. Look at the improvements Ian Lee has developed with almost no cost to the user. A lot of us are trying to convince the Techs with an HT and complaints that 2M offers nothing that their cell phone can't do to upgrade to General with an HF rig with reasonable power, features, and frequency agility. A lot of us are just working to move the tipping point for a lot of sideline people and if one of these new features pushes them over the edge...why not? That's the real genius that Farhan brought to the table: A rig that has the potential to make a lot of people sit up and take notice. Jack, W8TEE
On Monday, April 23, 2018, 7:33:17 PM EDT, Kees T <windy10605@...> wrote:
To continue a little further.....I see those who are interested in DSP and other number crunching applications will require a RPi, Teensy 3.5/3.6, or STM32F4xx/STM32F7xxx microcontrollers for standalone operation or as computer frontends. As a result, I see the complexity and cost growing exponentially. That's fine but I really don't see the uBIT-X as suited for going in that direction.? ? As Farahan said:??The ?BITX circuit design is simple enough to fit a single page. It¡¯s simplicity encourages you to modify, change and experiment (but keep it simple)......The ?BITX aims to fulfill such a need. It is a compact, single board design that covers the entire HF range with a few minor trade-offs. 73 Kees K5BCQ |
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Re: Teensy 3.5/3.6 upgrade for uBITX
To continue a little further.....I see those who are interested in DSP and other number crunching applications will require a RPi, Teensy 3.5/3.6, or STM32F4xx/STM32F7xxx microcontrollers for standalone operation or as computer frontends. As a result, I see the complexity and cost growing exponentially. That's fine but I really don't see the uBIT-X as suited for going in that direction.? ?
As Farahan said:??The ?BITX circuit design is simple enough to fit a single page. It¡¯s simplicity encourages you to modify, change and experiment (but keep it simple)......The ?BITX aims to fulfill such a need. It is a compact, single board design that covers the entire HF range with a few minor trade-offs. 73 Kees K5BCQ |
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Bitx20A bandspread
finally after all the years running a stock 20A I¡¯ve done the voltage stabilizing mod and the varactor tuning mod with a 10turn pot, and I think I¡¯ve worked out the L7 windings now to get into the phone section of the band. But as a result, the band spread is only about 25khz.?
I remember doing a tuning mod on a sw40+ Using a 10turn pot and the bandspread was small. There I added capacitance in the VFO and get nearly 100khz band spread with a 10turn pot.? I¡¯m thinking that by increasing C39 on the Bitx20A I should get more bandspread? ?Has anyone done this? I¡¯m I going in the right direction? I¡¯ll try it nevertheless but I didn¡¯t want to reinvent the wheel. Any guidance? Thanks! 72/73 de Chas ai4ot |
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Re: Teensy 3.5/3.6 upgrade for uBITX
In keeping in line with Farhan's $100 goal for the Transceiver, I would seriously look at using the "Protoneer" mentioned by some others. It has the "Nano" form factor, is Arduino Zero based, runs at 3x the Nano speed, has 8x the Nano flash memory, 16x the Nano RAM, and has a DAC. Seems like that is a great opportunity to sweep in some open source code like that K3NG has for his keyer, other modes of operation, and many, many, more features over time. 256KB of flash memory is a LOT of available space. The Protoneer is $10 and you can get a group together to save on the $5 postage from NZ. I'm sure there are plenty of firmware writers out there.
73 Kees K5BCQ |
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Re: show your mic
William Cullison
I made one from two carbon blocks, in a vertical configuration, with a dimpled area and a pencil sharpened at both ends. On Mon, Apr 23, 2018 at 4:07 PM, Dexter N Muir <dexy@...> wrote:
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Re: Teensy 3.5/3.6 upgrade for uBITX
I'd bet worst case latency on a not seriously loaded RPi is less than the
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milliseconds it takes us to load a new clock frequency into the si5351 via 100khz i2c. A google for "Rasberry Pi RT" shows there are real time variants of the kernel. I've got no idea how real time.? There are some going without linux, programming the bare metal. But I like the idea of still using a simple microntroller for basic rig control. Being something of a pessimist, I'd prefer not to depend on something as complex as the RPi,?too many billions of things that could go wrong. Jerry On Mon, Apr 23, 2018 at 11:01 am, Robert Weiman wrote:
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K9HZ
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