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Re: Latest FW Update
开云体育At some point I will redo all the headers and pins again with new Tweeny and Hat. ? The last one I built I dispensed with the sockets and just soldered it all to the pins and the main board.? As long as I don’t “screw up” and short something out, I guess I’m ok… ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Tim via groups.io
Sent: Sunday, April 13, 2025 7:48 AM To: [email protected] Subject: Re: [AmateurRadioBuilders] Latest FW Update ? I went thru that, changed all the headers and pins to US made and , new Tweeny and Audio Hat, it was golden until yesterdays upgrade. I must have tweaked something pressing the reset button. The pins on expansion board must be off alignment just enough to cause issues. There is a lot of pins and headers that have to align perfectly. I wish they had brought the rest out to a pad where we could add an external PB. All good for now. At some point I will redo all the headers and pins again with new Tweeny and Hat. Tim? ? |
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Re: T41-EP V12 Board Connections and Development of the VHF-UHF Board
开云体育I can give you some insight for how the VHF-UHF module works.? It’s a complete module except for the I/Q decode and code.? It has its own antenna connections,? Connects to the control cable… has connections for the I/Q in and out (as one of the RF Boards)… Meaning it is a true SDT by itself less the I/Q Code/Decode and control that is provided by the MAIN board. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of J P Watters via groups.io
Sent: Sunday, April 13, 2025 12:17 PM To: [email protected] Subject: [AmateurRadioBuilders] T41-EP V12 Board Connections and Development of the VHF-UHF Board ? Dr. Bill and Oliver, ? Al and Jack could not have found a more capable pair to take the T41-EP project over the horizion into what we will find in the infinite Experimentation Beyond. ? I have searched but have not found a board interconnection diagram that shows how the VHF/UHF board is proposed to connect.? It seems like I have run across that but I need some guidance to find it.? ? ..jpw J P Watters KC9KKO Morris, IL USA ? ? ? |
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Re: U8 test
开云体育Jerry… on the 1.8 MHZ filter… did you build it on the LPF or did you just short across it? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of jerry-KF6VB
Sent: Sunday, April 13, 2025 1:29 PM To: [email protected] Subject: [AmateurRadioBuilders] U8 test ? Hello all, |
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Re: T41-EP V12 Board Connections and Development of the VHF-UHF Board
This shows the diagram for two receivers, but just ignore the second one and the 100W amp. Jack, W8TEE
On Sunday, April 13, 2025 at 01:17:11 PM EDT, J P Watters via groups.io <jpwatters@...> wrote:
Dr. Bill and Oliver,
?
Al and Jack could not have found a more capable pair to take the T41-EP project over the horizion into what we will find in the infinite Experimentation Beyond.
?
I have searched but have not found a board interconnection diagram that shows how the VHF/UHF board is proposed to connect.?
It seems like I have run across that but I need some guidance to find it.?
?
..jpw J P Watters
KC9KKO
Morris, IL USA
?
?
?
-- Jack, W8TEE |
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Re: [SoftwareControlledHamRadio] T41 Hardware Directions
开云体育Forgot the TDA7312…. One of my favorite parts! ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of K9HZ
Sent: Sunday, April 13, 2025 2:14 PM To: [email protected]; [email protected] Subject: Re: [AmateurRadioBuilders] [SoftwareControlledHamRadio] T41 Hardware Directions ? “I have mentioned to Bill and Oliver that I would like to see a small PCB hold the 4 connectors (mic, PTT, headphones, and key) just because the current direct wiring makes the front look like a rat's nest. It's purely aesthetics for me and something most people will never see. “ ? I’ve been working on this for a while but have tied it to an overall audio system.? Here’s what I have on the list (Comments welcome): ?
?????????????????????????????????????????????? i.???? AUDIO: Mic, PTT in, Phones, ? ????????????????????????????????????????????? ii.???? Key? ??????????????????????????????????????????? iii.???? On/off
?????????????????????????????????????????????? i.???? AUDIO: Mic, Line in, Line out, speaker (internal). ????????????????????????????????????????????? ii.???? Key ??????????????????????????????????????????? iii.???? PTT IN ??????????????????????????????????????????? iv.???? KEY OUT (from LPF) ???????????????????????????????????????????? v.???? ACC Connector (BAND0-BAND3 from LPF Inverted). ??????????????????????????????????????????? vi.???? USB2 ?????????????????????????????????????????? vii.???? RS232 ? This is all sitting in a box here waiting to proto it up and try. ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Jack, W8TEE via groups.io ? All: Obviously I agree since I suggested to Al that Bill take the hardware over, to which he was in total agreement. Same for Oliver on the software track: both were done in consultation. In the future, I, too, would like to remove the Audio Hat and move it to the Main board. I would like to see the ADC/DAC's mounted over a small hole in the PCB, since mounting those has been troublesome in the past. Placing the SPI driver on the board makes sense. I don't know enough about the LT3045's to judge, but while they are relatively expensive (~$9), a quantity 10 purchase, however, drops the price by almost 25%, so some kind of sharing might be possible. The ones I saw are rated at 500mA, so I'm guessing more than one is needed but I don't know. I think most of us would plunk down an extra $20 if it results in a more quiet rig. I have mentioned to Bill and Oliver that I would like to see a small PCB hold the 4 connectors (mic, PTT, headphones, and key) just because the current direct wiring makes the front look like a rat's nest. It's purely aesthetics for me and something most people will never see. ? On the software side, I would love to take the time to cut down the globals in the code. It will make some things a little slower (noticeable??), but it would address Greg's complaint about the limited stack/heap space. My guess is that it would also make debugging easier, too. It would be super cool if the Arduino people noticed that the newer processors now have some serious code space with significantly faster clocks and that might permit a mini OS kernel that would support a symbolic debugger. Alas, that's probably not going to happen until the Arduino family get a significant boost in memory. ? Anyway, I think Bill and Oliver will take the T41 Project to even higher performance levels than it enjoys now. And a big thanks to all the members of these groups who have helped along the way! ? Jack, W8TEE ? On Sunday, April 13, 2025 at 12:18:50 PM EDT, K9HZ <bill@...> wrote: ? ? Like Oliver on the Software side, I have graciously been handed the hardware side of the T41 development moving forward. ?(Just my take with this next statement) The software side is easier to experiment with… basically because its easier to “roll it back” if the experiment fails.? To that end it requires more discussion and engineering calculation on the hardware side to make measurable steps forward. ?I do have a stable of engineers that work for me… but they are not here to work on the T41 project (unless they do it off-hours).? ?To that end, I will start permanent “hashtag” sub-groups in the AmateurRadioBuilders when there is a growing interest in any aspect of the T41 hardware to address and discuss.? ? There will be some changes to the building process tools I want to announce today.? I will begin to stock solder masks shortly… something I have not done in the past.? I originally considered stocking solder masks and “renting them out” for reuse.? But after understanding that the SHIPPING for return would cost about the same as purchasing a mask outright… I will simply sell them outright.? Then you can share them on a local/ club level. ? I’ve shipped about 50 of the display driver hardware devices.? I have about 150 more in stock and then I will restock.? Eventually, this hardware can be moved to the main board if there is an update. ? Remember, ?there is a difference between the T41 hardware and my K9HZ, and the K9HZ/KI3P hardware projects that we may or may not allow group think due to the fact that there may be external requirements that you are not aware of (e.g. the 100W PA module, the VHF/UHF Module, ETC.). ??? ? Here are a few hardware things I am thinking about for the existing T41 boards.? If we update the main board to a 12.7 at some point, I think we should consider placing the hardware from the audio hat directly on the main board.? I would also put the SPI display driver on the board… a pair of ultra-low noise references for the A/D and D/A as needed, and possibly update the linear regulators with ultra noise LT3045 (etc.) devices.? Maybe splitting the A/Ds and D/As to a separate card… off the Main board may facilitate more experimentation at that level too… making it easier to change.? All of these are small changes… but if you are an experimenter, it might be up your alley. ? ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ?
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Re: [SoftwareControlledHamRadio] T41 Hardware Directions
开云体育“I have mentioned to Bill and Oliver that I would like to see a small PCB hold the 4 connectors (mic, PTT, headphones, and key) just because the current direct wiring makes the front look like a rat's nest. It's purely aesthetics for me and something most people will never see. “ ? I’ve been working on this for a while but have tied it to an overall audio system.? Here’s what I have on the list (Comments welcome): ?
?????????????????????????????????????????????? i.???? AUDIO: Mic, PTT in, Phones, ? ????????????????????????????????????????????? ii.???? Key? ??????????????????????????????????????????? iii.???? On/off
?????????????????????????????????????????????? i.???? AUDIO: Mic, Line in, Line out, speaker (internal). ????????????????????????????????????????????? ii.???? Key ??????????????????????????????????????????? iii.???? PTT IN ??????????????????????????????????????????? iv.???? KEY OUT (from LPF) ???????????????????????????????????????????? v.???? ACC Connector (BAND0-BAND3 from LPF Inverted). ??????????????????????????????????????????? vi.???? USB2 ?????????????????????????????????????????? vii.???? RS232 ? This is all sitting in a box here waiting to proto it up and try. ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Jack, W8TEE via groups.io
Sent: Sunday, April 13, 2025 11:58 AM To: [email protected]; AmateurRadioBuilders <[email protected]> Subject: Re: [AmateurRadioBuilders] [SoftwareControlledHamRadio] T41 Hardware Directions ? All: Obviously I agree since I suggested to Al that Bill take the hardware over, to which he was in total agreement. Same for Oliver on the software track: both were done in consultation. In the future, I, too, would like to remove the Audio Hat and move it to the Main board. I would like to see the ADC/DAC's mounted over a small hole in the PCB, since mounting those has been troublesome in the past. Placing the SPI driver on the board makes sense. I don't know enough about the LT3045's to judge, but while they are relatively expensive (~$9), a quantity 10 purchase, however, drops the price by almost 25%, so some kind of sharing might be possible. The ones I saw are rated at 500mA, so I'm guessing more than one is needed but I don't know. I think most of us would plunk down an extra $20 if it results in a more quiet rig. I have mentioned to Bill and Oliver that I would like to see a small PCB hold the 4 connectors (mic, PTT, headphones, and key) just because the current direct wiring makes the front look like a rat's nest. It's purely aesthetics for me and something most people will never see. ? On the software side, I would love to take the time to cut down the globals in the code. It will make some things a little slower (noticeable??), but it would address Greg's complaint about the limited stack/heap space. My guess is that it would also make debugging easier, too. It would be super cool if the Arduino people noticed that the newer processors now have some serious code space with significantly faster clocks and that might permit a mini OS kernel that would support a symbolic debugger. Alas, that's probably not going to happen until the Arduino family get a significant boost in memory. ? Anyway, I think Bill and Oliver will take the T41 Project to even higher performance levels than it enjoys now. And a big thanks to all the members of these groups who have helped along the way! ? Jack, W8TEE ? On Sunday, April 13, 2025 at 12:18:50 PM EDT, K9HZ <bill@...> wrote: ? ? Like Oliver on the Software side, I have graciously been handed the hardware side of the T41 development moving forward. ?(Just my take with this next statement) The software side is easier to experiment with… basically because its easier to “roll it back” if the experiment fails.? To that end it requires more discussion and engineering calculation on the hardware side to make measurable steps forward. ?I do have a stable of engineers that work for me… but they are not here to work on the T41 project (unless they do it off-hours).? ?To that end, I will start permanent “hashtag” sub-groups in the AmateurRadioBuilders when there is a growing interest in any aspect of the T41 hardware to address and discuss.? ? There will be some changes to the building process tools I want to announce today.? I will begin to stock solder masks shortly… something I have not done in the past.? I originally considered stocking solder masks and “renting them out” for reuse.? But after understanding that the SHIPPING for return would cost about the same as purchasing a mask outright… I will simply sell them outright.? Then you can share them on a local/ club level. ? I’ve shipped about 50 of the display driver hardware devices.? I have about 150 more in stock and then I will restock.? Eventually, this hardware can be moved to the main board if there is an update. ? Remember, ?there is a difference between the T41 hardware and my K9HZ, and the K9HZ/KI3P hardware projects that we may or may not allow group think due to the fact that there may be external requirements that you are not aware of (e.g. the 100W PA module, the VHF/UHF Module, ETC.). ??? ? Here are a few hardware things I am thinking about for the existing T41 boards.? If we update the main board to a 12.7 at some point, I think we should consider placing the hardware from the audio hat directly on the main board.? I would also put the SPI display driver on the board… a pair of ultra-low noise references for the A/D and D/A as needed, and possibly update the linear regulators with ultra noise LT3045 (etc.) devices.? Maybe splitting the A/Ds and D/As to a separate card… off the Main board may facilitate more experimentation at that level too… making it easier to change.? All of these are small changes… but if you are an experimenter, it might be up your alley. ? ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ?
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Re: [SoftwareControlledHamRadio] T41 Hardware Directions
All: Obviously I agree since I suggested to Al that Bill take the hardware over, to which he was in total agreement. Same for Oliver on the software track: both were done in consultation. In the future, I, too, would like to remove the Audio Hat and move it to the Main board. I would like to see the ADC/DAC's mounted over a small hole in the PCB, since mounting those has been troublesome in the past. Placing the SPI driver on the board makes sense. I don't know enough about the LT3045's to judge, but while they are relatively expensive (~$9), a quantity 10 purchase, however, drops the price by almost 25%, so some kind of sharing might be possible. The ones I saw are rated at 500mA, so I'm guessing more than one is needed but I don't know. I think most of us would plunk down an extra $20 if it results in a more quiet rig. I have mentioned to Bill and Oliver that I would like to see a small PCB hold the 4 connectors (mic, PTT, headphones, and key) just because the current direct wiring makes the front look like a rat's nest. It's purely aesthetics for me and something most people will never see. On the software side, I would love to take the time to cut down the globals in the code. It will make some things a little slower (noticeable??), but it would address Greg's complaint about the limited stack/heap space. My guess is that it would also make debugging easier, too. It would be super cool if the Arduino people noticed that the newer processors now have some serious code space with significantly faster clocks and that might permit a mini OS kernel that would support a symbolic debugger. Alas, that's probably not going to happen until the Arduino family get a significant boost in memory. Anyway, I think Bill and Oliver will take the T41 Project to even higher performance levels than it enjoys now. And a big thanks to all the members of these groups who have helped along the way! Jack, W8TEE
On Sunday, April 13, 2025 at 12:18:50 PM EDT, K9HZ <bill@...> wrote:
Like Oliver on the Software side, I have graciously been handed the hardware side of the T41 development moving forward. ?(Just my take with this next statement) The software side is easier to experiment with… basically because its easier to “roll it back” if the experiment fails.? To that end it requires more discussion and engineering calculation on the hardware side to make measurable steps forward. ?I do have a stable of engineers that work for me… but they are not here to work on the T41 project (unless they do it off-hours).? ?To that end, I will start permanent “hashtag” sub-groups in the AmateurRadioBuilders when there is a growing interest in any aspect of the T41 hardware to address and discuss.? ? There will be some changes to the building process tools I want to announce today.? I will begin to stock solder masks shortly… something I have not done in the past.? I originally considered stocking solder masks and “renting them out” for reuse.? But after understanding that the SHIPPING for return would cost about the same as purchasing a mask outright… I will simply sell them outright.? Then you can share them on a local/ club level. ? I’ve shipped about 50 of the display driver hardware devices.? I have about 150 more in stock and then I will restock.? Eventually, this hardware can be moved to the main board if there is an update. ? Remember, ?there is a difference between the T41 hardware and my K9HZ, and the K9HZ/KI3P hardware projects that we may or may not allow group think due to the fact that there may be external requirements that you are not aware of (e.g. the 100W PA module, the VHF/UHF Module, ETC.). ??? ? Here are a few hardware things I am thinking about for the existing T41 boards.? If we update the main board to a 12.7 at some point, I think we should consider placing the hardware from the audio hat directly on the main board.? I would also put the SPI display driver on the board… a pair of ultra-low noise references for the A/D and D/A as needed, and possibly update the linear regulators with ultra noise LT3045 (etc.) devices.? Maybe splitting the A/Ds and D/As to a separate card… off the Main board may facilitate more experimentation at that level too… making it easier to change.? All of these are small changes… but if you are an experimenter, it might be up your alley. ? ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? -- Jack, W8TEE |
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T41 Hardware Directions
开云体育Like Oliver on the Software side, I have graciously been handed the hardware side of the T41 development moving forward. ?(Just my take with this next statement) The software side is easier to experiment with… basically because its easier to “roll it back” if the experiment fails.? To that end it requires more discussion and engineering calculation on the hardware side to make measurable steps forward. ?I do have a stable of engineers that work for me… but they are not here to work on the T41 project (unless they do it off-hours).? ?To that end, I will start permanent “hashtag” sub-groups in the AmateurRadioBuilders when there is a growing interest in any aspect of the T41 hardware to address and discuss.? ? There will be some changes to the building process tools I want to announce today.? I will begin to stock solder masks shortly… something I have not done in the past.? I originally considered stocking solder masks and “renting them out” for reuse.? But after understanding that the SHIPPING for return would cost about the same as purchasing a mask outright… I will simply sell them outright.? Then you can share them on a local/ club level. ? I’ve shipped about 50 of the display driver hardware devices.? I have about 150 more in stock and then I will restock.? Eventually, this hardware can be moved to the main board if there is an update. ? Remember, ?there is a difference between the T41 hardware and my K9HZ, and the K9HZ/KI3P hardware projects that we may or may not allow group think due to the fact that there may be external requirements that you are not aware of (e.g. the 100W PA module, the VHF/UHF Module, ETC.). ??? ? Here are a few hardware things I am thinking about for the existing T41 boards.? If we update the main board to a 12.7 at some point, I think we should consider placing the hardware from the audio hat directly on the main board.? I would also put the SPI display driver on the board… a pair of ultra-low noise references for the A/D and D/A as needed, and possibly update the linear regulators with ultra noise LT3045 (etc.) devices.? Maybe splitting the A/Ds and D/As to a separate card… off the Main board may facilitate more experimentation at that level too… making it easier to change.? All of these are small changes… but if you are an experimenter, it might be up your alley. ? ? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? |
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Re: [SoftwareControlledHamRadio] T41 V12 software development path forward
开云体育Hey Oliver, I have no problem with you moving the test routines to your GITHUB.? They surely will get more maintenance attention there than on my GITHUB… ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Oliver KI3P via groups.io
Sent: Sunday, April 13, 2025 9:26 AM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] T41 V12 software development path forward ? The README file on GitHub describes how to set up the build environment and install all the required libraries: ? In general, you should try to test each board as you build it. The hardware repository contains a variety of sketches to do so: ? It would be nice to have a step-by-step guide to using these sketches to test a radio. Maybe you, or someone else out there, would like to write this as you test your radio and contribute it back to the group? |
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Re: [SoftwareControlledHamRadio] T41 V12 software development path forward
All: I agree with everything Oliver has stated here. I should have done a better job of structuring the code from the outset, but at the start, it was just Al and I working on the T41, and we were anxious to see if we could just get it to work. Over time, the T41 Project morphed into a much bigger project than we ever envisioned to the point where we have 3200+ people following its development. The early design mistakes I made are coming home to "byte" me in the butt. The display is a nettlesome issue and it's puzzling to me that some people have issues and others don't. The good news is that Oliver is masterful at both the hardware and software points. Anyway, Oliver's restructuring idea is a good one. If this is something you haven't wrangled with before, just search "hardware abstraction layer" (HAL) to read about it. Both Al and I still plan to be active in the Project, albeit less than in the past. (Last night, for the first time since Field Day last year, I spent over an hour actually playing radio...I still enjoy it after 70 years of operating and plan to be more active now!) We also have some small projects we'd like to mess around with. We hope everyone will continue to support the T41 Project going forward. Jack, W8TEE
On Sunday, April 13, 2025 at 08:12:17 AM EDT, Oliver KI3P via groups.io <oliver@...> wrote:
As Jack mentioned in a recent post, I've accepted the weighty responsibility for maintaining the code for the T21 V12 radio. I've learned so much by participating in the T41 project, I'm happy to help keep this project going so others can get as much enjoyment and knowledge as I have.
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Here's how we're going to manage the code. Jack and Al have written a of their book describing the T41 theory and operation of the T41 radio. We will maintain Version 66-9 of the code on GitHub in a state that reflects the book so that anyone buying the book in the future can download code that corresponds to the structure and features described in the book. We'll fix bugs, but not add any new features to this code. It will live here:
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New features and changes to the code will be hosted in a new repository on GitHub:
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At the moment these two repositories are identical (other than a change in the name of the sketch). Expect them to diverge over time.
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So what comes next? A lot of discussion in this forum over the last few years has centered around the display and the need to restructure or reformat the code to make it easier to change this code. Similarly, the changes to the hardware between V11 and V12 necessitated making many changes sprinkled through the code base. Updating the code to accommodate changing hardware becomes very challenging. Both of these issues are derived the same root cause: the software is not structured in a way that abstracts the hardware implementation. Before leaping into any major feature upgrades, I think that restructuring the code to make it more modular and hardware-portable would be a good idea. So I'm thinking a lot about how the software works and what a different architecture might look like.
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-- Jack, W8TEE |
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Re: Latest FW Update
开云体育Others have had trouble with the pins and connectors… they are not all created the same and can cause intermittent connections if they are not 100% compatible. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Tim via groups.io
Sent: Saturday, April 12, 2025 7:10 PM To: [email protected] Subject: Re: [AmateurRadioBuilders] Latest FW Update ? Some how when I use the audio hat extension board it causes issues, If I plug audio hat direct into main board no boot issues.? I ohmed out the traces on on extension board and all seem fine, so not sure but I can go on with calibration and working on optimizing rf cable lengths and ends. Odd thing is I never had issue with previous builds, I tried previous build and got same result so I suspected hardware. Good thing is I have plenty of room for audio hat extension is not needed.? Tim W4YN ? ? |
K9HZ
Jack, W8TEE