Wow! Those parts look really good, Bruce W8BH. I always enjoy reading your technical documentation. Everything is always presented in a clear, understandable manner. Looking good!
I don't think I have ever seen an SMD speaker before? Thanks for the link to Dave's PCB Design Tutorial. What are you using for a portable paddle/key?
On Thu, Jul 9, 2020 at 8:47 AM Bruce Hall < bhall66@...> wrote: Part 5 is now posted:
- Bruce ?
I posted a draft of part 4 (audio): ?
- Bruce
|
|
|
Hi Ken,
Yes, those should work.??
The pot you specify is exactly what I am using, fits nicely, and feels right.? No knob needed.
The knurled encoder shaft feels a bit rough to me.?? Also, make sure the shaft length on the encoder is correct.? I noticed that the pot shaft and encoder shaft are measured differently. Since the encoder shafts are aluminum I cut mine to size with a dremel.
Part 6 will include a bill of materials and links for the major components.
Bruce ??
On Wed, Jul 8, 2020 at 3:19 PM Ken Kaplan < wb2art@...> wrote: Hi Bruce
I was thinking of using a knurled shaft for the audio pot and encoder.
Maybe something like these:
audio pot: PTV09A-4020U-B103
encoder: PEC11R-4215K-S0024
(Digikey)
I'm just trying to find a way to eliminate the hunt for knobs.
73
Ken WB2ART
On Wed, Jul 8, 2020 at 2:48 PM Ken Kaplan via
<wb2art=[email protected]> wrote:
>
> Hi Bruce
> Nice and simple.
>
> I do have a problem with the PAM8403 chips on the previous versions.
> They are very noisy when using headphones.
> Have not found a cure.
>
> I will probably sell the 5 'old' versions, as I like the idea of
> battery operations.
> We charge enough 'stuff' around here, so one more won't be a problem.
> 73
> Ken WB2ART
>
>
> On Wed, Jul 8, 2020 at 2:36 PM Bruce Hall <bhall66@...> wrote:
> >
> > I posted a draft of part 4 (audio):
> >
> >
> > - Bruce
> >
> >
>
>
>
|
Hi Bruce I was thinking of using a knurled shaft for the audio pot and encoder. Maybe something like these: audio pot: PTV09A-4020U-B103 encoder: PEC11R-4215K-S0024 (Digikey) I'm just trying to find a way to eliminate the hunt for knobs. 73 Ken WB2ART On Wed, Jul 8, 2020 at 2:48 PM Ken Kaplan via groups.io <wb2art@...> wrote:
Hi Bruce
Nice and simple.
I do have a problem with the PAM8403 chips on the previous versions.
They are very noisy when using headphones.
Have not found a cure.
I will probably sell the 5 'old' versions, as I like the idea of
battery operations.
We charge enough 'stuff' around here, so one more won't be a problem.
73
Ken WB2ART
On Wed, Jul 8, 2020 at 2:36 PM Bruce Hall <bhall66@...> wrote:
I posted a draft of part 4 (audio):
- Bruce
w8bh.net
|
Hi Bruce
Nice and simple.
I do have a problem with the PAM8403 chips on the previous versions.
They are very noisy when using headphones.
Have not found a cure.
I will probably sell the 5 'old' versions, as I like the idea of
battery operations.
We charge enough 'stuff' around here, so one more won't be a problem.
73
Ken WB2ART
toggle quoted message
Show quoted text
On Wed, Jul 8, 2020 at 2:36 PM Bruce Hall <bhall66@...> wrote:
I posted a draft of part 4 (audio):
- Bruce
w8bh.net
|
I posted a draft of part 4 (audio): ?
- Bruce
|
Hello Bruce W8BH,
The cool thing about releasing the draft PDFs is that many eyes usually see more than two eyes. I am glad that my nit-picky suggestions were considered.
All of these PDFs are very educational. I like the way you explain everything so clearly.
I am looking forward to the Audio part. !!!
Your Portable Morse Code Tutor is looking like it might be a good ARC project? If the COVID19 pandemic ever allows groups to get together again?
On Wed, Jul 8, 2020 at 8:12 AM Bruce Hall < bhall66@...> wrote: Thanks Ken, I am indebted to your careful proofreading.? ?The corrections are now in place.
Bruce
On Wed, Jul 8, 2020 at 8:04 AM Ken KM4NFQ < km4nfq@...> wrote: Hello Bruce W8BH,
I really enjoyed that microcontroller part !!!
I have now had a chance to sit down and read each part carefully.
Here are a few suggestions that you may consider for all three parts, so far:
part 2 pg 2
having a very lower Vdo is important.
suggested:
having a much lower Vdo is important.
part 2 pg 4
Pin 1 if the MCP73831 is the status line.
suggested:
Pin 1 of the MCP73831 is the status line.
part 2 pg 4
What resistor value should be use?
suggested:
What resistor value should be used?
or:
What resistor value should we use?
part 2 pg 4
to a microcontroller input, so that you the application also knows
suggested:
to a microcontroller input, so that the application also knows
or:
to a microcontroller input, so that your application also knows
part 3 pg 1
flash memory, used by Morse Code Tutor to store its settings,
suggested:
flash memory, used by the Morse Code Tutor to store its settings,
part 3 pg 4
Let¡¯s add connect the pushbutton, resistor, and capacitor to the
suggested:
Let¡¯s add and connect the pushbutton, resistor, and capacitor to the
part 3 pg 4
The datasheet for the
STM32 recommends bypass capacitor for every set of
voltage pins on the microcontroller.
suggested:
The datasheet for the
STM32 recommends a bypass capacitor for every set of
voltage pins on the microcontroller.
or:
The datasheet for the
STM32 recommends bypass capacitors for every set of
voltage pins on the microcontroller.
I know those are all very nit-picky, and the drafts were very understandable as written, but I can't help it. I think it is an OCD thing? 8^D
On Tue, Jul 7, 2020 at 7:55 PM Bruce Hall < bhall66@...> wrote: Thanks Ken. Here is a draft of the microcontroller part:
- Bruce
?
On Tue, Jul 7, 2020 at 7:27 PM Ken KM4NFQ < km4nfq@...> wrote: Hello Bruce W8BH,
That is very educational. Nice work.
I am looking forward to the microcontroller part.
Regards,
Ken, KM4NFQ "Not Fully Qualified"
/g/w8bhMorseTutor
On Tue, Jul 7, 2020 at 4:19 PM Bruce Hall <bhall66@...> wrote:
>
> I just posted a draft of the second part to:
>
>
> - Bruce
>
>
>
> On Sun, Jul 5, 2020 at 2:17 PM Bruce Hall <bhall66@...> wrote:
>>
>> I am starting a project description of the handheld "pocket" tutor.
>> The overview is at:?
>> More to follow.
>>
>> Bruce
>>
>>
>> On Sat, Jun 6, 2020 at 8:45 PM Bruce Hall via <bhall66=[email protected]> wrote:
>>>
>>> Attached are photos of a Morse Tutor prototype I built.? Some features:
>>>
>>> Handheld:? 110 x 60 x 20 mm (roughly)
>>> Li-poly battery or USB powered, with built-in battery charger
>>> Larger 3.2" display.
>>> Built-in speaker + External audio out jack
>>> Runs the same code-base at the Blue Pill.
>>>
>>> The construction is mainly SMD.? The "enclosure" is a PCB sandwich.
>>>
>>> It is a work in progress so I don't have many details.? But if anyone wants a great way NOT to make a power supply, I can help.
>>>
>>> Bruce
>>>
>>>
>>>
>>>
>
|
Thanks Ken, I am indebted to your careful proofreading.? ?The corrections are now in place.
Bruce
On Wed, Jul 8, 2020 at 8:04 AM Ken KM4NFQ < km4nfq@...> wrote: Hello Bruce W8BH,
I really enjoyed that microcontroller part !!!
I have now had a chance to sit down and read each part carefully.
Here are a few suggestions that you may consider for all three parts, so far:
part 2 pg 2
having a very lower Vdo is important.
suggested:
having a much lower Vdo is important.
part 2 pg 4
Pin 1 if the MCP73831 is the status line.
suggested:
Pin 1 of the MCP73831 is the status line.
part 2 pg 4
What resistor value should be use?
suggested:
What resistor value should be used?
or:
What resistor value should we use?
part 2 pg 4
to a microcontroller input, so that you the application also knows
suggested:
to a microcontroller input, so that the application also knows
or:
to a microcontroller input, so that your application also knows
part 3 pg 1
flash memory, used by Morse Code Tutor to store its settings,
suggested:
flash memory, used by the Morse Code Tutor to store its settings,
part 3 pg 4
Let¡¯s add connect the pushbutton, resistor, and capacitor to the
suggested:
Let¡¯s add and connect the pushbutton, resistor, and capacitor to the
part 3 pg 4
The datasheet for the
STM32 recommends bypass capacitor for every set of
voltage pins on the microcontroller.
suggested:
The datasheet for the
STM32 recommends a bypass capacitor for every set of
voltage pins on the microcontroller.
or:
The datasheet for the
STM32 recommends bypass capacitors for every set of
voltage pins on the microcontroller.
I know those are all very nit-picky, and the drafts were very understandable as written, but I can't help it. I think it is an OCD thing? 8^D
On Tue, Jul 7, 2020 at 7:55 PM Bruce Hall < bhall66@...> wrote: Thanks Ken. Here is a draft of the microcontroller part:
- Bruce
?
On Tue, Jul 7, 2020 at 7:27 PM Ken KM4NFQ < km4nfq@...> wrote: Hello Bruce W8BH,
That is very educational. Nice work.
I am looking forward to the microcontroller part.
Regards,
Ken, KM4NFQ "Not Fully Qualified"
/g/w8bhMorseTutor
On Tue, Jul 7, 2020 at 4:19 PM Bruce Hall <bhall66@...> wrote:
>
> I just posted a draft of the second part to:
>
>
> - Bruce
>
>
>
> On Sun, Jul 5, 2020 at 2:17 PM Bruce Hall <bhall66@...> wrote:
>>
>> I am starting a project description of the handheld "pocket" tutor.
>> The overview is at:?
>> More to follow.
>>
>> Bruce
>>
>>
>> On Sat, Jun 6, 2020 at 8:45 PM Bruce Hall via <bhall66=[email protected]> wrote:
>>>
>>> Attached are photos of a Morse Tutor prototype I built.? Some features:
>>>
>>> Handheld:? 110 x 60 x 20 mm (roughly)
>>> Li-poly battery or USB powered, with built-in battery charger
>>> Larger 3.2" display.
>>> Built-in speaker + External audio out jack
>>> Runs the same code-base at the Blue Pill.
>>>
>>> The construction is mainly SMD.? The "enclosure" is a PCB sandwich.
>>>
>>> It is a work in progress so I don't have many details.? But if anyone wants a great way NOT to make a power supply, I can help.
>>>
>>> Bruce
>>>
>>>
>>>
>>>
>
|
Hello Bruce W8BH,
I really enjoyed that microcontroller part !!!
I have now had a chance to sit down and read each part carefully.
Here are a few suggestions that you may consider for all three parts, so far:
part 2 pg 2
having a very lower Vdo is important.
suggested:
having a much lower Vdo is important.
part 2 pg 4
Pin 1 if the MCP73831 is the status line.
suggested:
Pin 1 of the MCP73831 is the status line.
part 2 pg 4
What resistor value should be use?
suggested:
What resistor value should be used?
or:
What resistor value should we use?
part 2 pg 4
to a microcontroller input, so that you the application also knows
suggested:
to a microcontroller input, so that the application also knows
or:
to a microcontroller input, so that your application also knows
part 3 pg 1
flash memory, used by Morse Code Tutor to store its settings,
suggested:
flash memory, used by the Morse Code Tutor to store its settings,
part 3 pg 4
Let¡¯s add connect the pushbutton, resistor, and capacitor to the
suggested:
Let¡¯s add and connect the pushbutton, resistor, and capacitor to the
part 3 pg 4
The datasheet for the
STM32 recommends bypass capacitor for every set of
voltage pins on the microcontroller.
suggested:
The datasheet for the
STM32 recommends a bypass capacitor for every set of
voltage pins on the microcontroller.
or:
The datasheet for the
STM32 recommends bypass capacitors for every set of
voltage pins on the microcontroller.
I know those are all very nit-picky, and the drafts were very understandable as written, but I can't help it. I think it is an OCD thing? 8^D
On Tue, Jul 7, 2020 at 7:55 PM Bruce Hall < bhall66@...> wrote: Thanks Ken. Here is a draft of the microcontroller part:
- Bruce
?
On Tue, Jul 7, 2020 at 7:27 PM Ken KM4NFQ < km4nfq@...> wrote: Hello Bruce W8BH,
That is very educational. Nice work.
I am looking forward to the microcontroller part.
Regards,
Ken, KM4NFQ "Not Fully Qualified"
/g/w8bhMorseTutor
On Tue, Jul 7, 2020 at 4:19 PM Bruce Hall <bhall66@...> wrote:
>
> I just posted a draft of the second part to:
>
>
> - Bruce
>
>
>
> On Sun, Jul 5, 2020 at 2:17 PM Bruce Hall <bhall66@...> wrote:
>>
>> I am starting a project description of the handheld "pocket" tutor.
>> The overview is at:?
>> More to follow.
>>
>> Bruce
>>
>>
>> On Sat, Jun 6, 2020 at 8:45 PM Bruce Hall via <bhall66=[email protected]> wrote:
>>>
>>> Attached are photos of a Morse Tutor prototype I built.? Some features:
>>>
>>> Handheld:? 110 x 60 x 20 mm (roughly)
>>> Li-poly battery or USB powered, with built-in battery charger
>>> Larger 3.2" display.
>>> Built-in speaker + External audio out jack
>>> Runs the same code-base at the Blue Pill.
>>>
>>> The construction is mainly SMD.? The "enclosure" is a PCB sandwich.
>>>
>>> It is a work in progress so I don't have many details.? But if anyone wants a great way NOT to make a power supply, I can help.
>>>
>>> Bruce
>>>
>>>
>>>
>>>
>
|
Thanks Ken. Here is a draft of the microcontroller part:
- Bruce
?
On Tue, Jul 7, 2020 at 7:27 PM Ken KM4NFQ < km4nfq@...> wrote: Hello Bruce W8BH,
That is very educational. Nice work.
I am looking forward to the microcontroller part.
Regards,
Ken, KM4NFQ "Not Fully Qualified"
/g/w8bhMorseTutor
On Tue, Jul 7, 2020 at 4:19 PM Bruce Hall <bhall66@...> wrote:
>
> I just posted a draft of the second part to:
>
>
> - Bruce
>
>
>
> On Sun, Jul 5, 2020 at 2:17 PM Bruce Hall <bhall66@...> wrote:
>>
>> I am starting a project description of the handheld "pocket" tutor.
>> The overview is at:?
>> More to follow.
>>
>> Bruce
>>
>>
>> On Sat, Jun 6, 2020 at 8:45 PM Bruce Hall via <bhall66=[email protected]> wrote:
>>>
>>> Attached are photos of a Morse Tutor prototype I built.? Some features:
>>>
>>> Handheld:? 110 x 60 x 20 mm (roughly)
>>> Li-poly battery or USB powered, with built-in battery charger
>>> Larger 3.2" display.
>>> Built-in speaker + External audio out jack
>>> Runs the same code-base at the Blue Pill.
>>>
>>> The construction is mainly SMD.? The "enclosure" is a PCB sandwich.
>>>
>>> It is a work in progress so I don't have many details.? But if anyone wants a great way NOT to make a power supply, I can help.
>>>
>>> Bruce
>>>
>>>
>>>
>>>
>
|
Hello Bruce W8BH, That is very educational. Nice work. I am looking forward to the microcontroller part. Regards, Ken, KM4NFQ "Not Fully Qualified" /g/w8bhMorseTutor
On Tue, Jul 7, 2020 at 4:19 PM Bruce Hall <bhall66@...> wrote:
I just posted a draft of the second part to:
- Bruce
w8bh.net
On Sun, Jul 5, 2020 at 2:17 PM Bruce Hall <bhall66@...> wrote:
I am starting a project description of the handheld "pocket" tutor.
The overview is at:
More to follow.
Bruce
w8bh.net
On Sat, Jun 6, 2020 at 8:45 PM Bruce Hall via groups.io <bhall66@...> wrote:
Attached are photos of a Morse Tutor prototype I built. Some features:
Handheld: 110 x 60 x 20 mm (roughly)
Li-poly battery or USB powered, with built-in battery charger
Larger 3.2" display.
Built-in speaker + External audio out jack
Runs the same code-base at the Blue Pill.
The construction is mainly SMD. The "enclosure" is a PCB sandwich.
It is a work in progress so I don't have many details. But if anyone wants a great way NOT to make a power supply, I can help.
Bruce
w8bh.net
|
Looking better and better. Nice job so far! 73 Ken WB2ART?
On Tue, Jul 7, 2020, 4:19 PM Bruce Hall < bhall66@...> wrote: I just posted a draft of the second part to: ?
- Bruce ?
On Sun, Jul 5, 2020 at 2:17 PM Bruce Hall < bhall66@...> wrote: I am starting a project description of the handheld "pocket" tutor. The overview is at:?? More to follow.
Bruce
Attached are photos of a Morse Tutor prototype I built.? Some features:
Handheld:? 110 x 60 x 20 mm (roughly) Li-poly battery or USB powered, with built-in battery charger Larger 3.2" display. Built-in speaker?+ External audio out jack Runs the same code-base at the Blue Pill.
The construction is mainly SMD.? The "enclosure" is a PCB sandwich.
It is a work in progress so I don't have many details.? But if anyone wants a great way NOT to make a power supply, I can help.
Bruce
|
I just posted a draft of the second part to: ?
- Bruce ?
On Sun, Jul 5, 2020 at 2:17 PM Bruce Hall < bhall66@...> wrote: I am starting a project description of the handheld "pocket" tutor. The overview is at:?? More to follow.
Bruce
Attached are photos of a Morse Tutor prototype I built.? Some features:
Handheld:? 110 x 60 x 20 mm (roughly) Li-poly battery or USB powered, with built-in battery charger Larger 3.2" display. Built-in speaker?+ External audio out jack Runs the same code-base at the Blue Pill.
The construction is mainly SMD.? The "enclosure" is a PCB sandwich.
It is a work in progress so I don't have many details.? But if anyone wants a great way NOT to make a power supply, I can help.
Bruce
|
Great! I am really looking forward to seeing all of it. Good start. Regards, Ken, KM4NFQ "Not Fully Qualified" /g/w8bhMorseTutor
On Sun, Jul 5, 2020 at 2:17 PM Bruce Hall <bhall66@...> wrote:
I am starting a project description of the handheld "pocket" tutor.
The overview is at:
More to follow.
Bruce
w8bh.net
On Sat, Jun 6, 2020 at 8:45 PM Bruce Hall via groups.io <bhall66@...> wrote:
Attached are photos of a Morse Tutor prototype I built. Some features:
Handheld: 110 x 60 x 20 mm (roughly)
Li-poly battery or USB powered, with built-in battery charger
Larger 3.2" display.
Built-in speaker + External audio out jack
Runs the same code-base at the Blue Pill.
The construction is mainly SMD. The "enclosure" is a PCB sandwich.
It is a work in progress so I don't have many details. But if anyone wants a great way NOT to make a power supply, I can help.
Bruce
w8bh.net
|
toggle quoted message
Show quoted text
On Sun, Jul 5, 2020, 2:17 PM Bruce Hall < bhall66@...> wrote: I am starting a project description of the handheld "pocket" tutor. The overview is at:?? More to follow.
Bruce
Attached are photos of a Morse Tutor prototype I built.? Some features:
Handheld:? 110 x 60 x 20 mm (roughly) Li-poly battery or USB powered, with built-in battery charger Larger 3.2" display. Built-in speaker?+ External audio out jack Runs the same code-base at the Blue Pill.
The construction is mainly SMD.? The "enclosure" is a PCB sandwich.
It is a work in progress so I don't have many details.? But if anyone wants a great way NOT to make a power supply, I can help.
Bruce
|
I am starting a project description of the handheld "pocket" tutor. The overview is at:?? More to follow.
Bruce
Attached are photos of a Morse Tutor prototype I built.? Some features:
Handheld:? 110 x 60 x 20 mm (roughly) Li-poly battery or USB powered, with built-in battery charger Larger 3.2" display. Built-in speaker?+ External audio out jack Runs the same code-base at the Blue Pill.
The construction is mainly SMD.? The "enclosure" is a PCB sandwich.
It is a work in progress so I don't have many details.? But if anyone wants a great way NOT to make a power supply, I can help.
Bruce
|
Greetings,
I received an email today announcing a USA division of RobotDyn.
I have purchased Mega2560 Pro Mini boards from RobotDyn in the past.
They seem to be good little boards.
--
Regards,
Ken, KM4NFQ "Not Fully Qualified"
/g/w8bhMorseTutor
|
Re: Could the JYE Tech DSO150 kit be made into a version of the Morse Tutor?
Hi Bruce,
I bought the DSO150 kit from Bangood March 2nd,, the exact price was ?13.34 delivered.
Price seems to? fluctuate wildly and I had been watching on ebay, aliexpress and Bangood and, when i noticed that price decided to go for it.
As a scope, it is an interesting toy, I already have a decent Tektronix and a Pico USB scope, it was a purchase of curiosity rather than need.
It does do what it says on the tin but looking at the schematic of the already built and tested main board the mind started working.
Guess I was lucky to get the kit at that price, I have also had another bargain basement Bangood price on an offering of two Unos with one 2.4 and one 2.8 inch TFT display.
All were good except the smaller display which I managed to get to work with a controller identity different to the one reported.
73,
Bob GM4CID
|
Re: Could the JYE Tech DSO150 kit be made into a version of the Morse Tutor?
|
Re: Could the JYE Tech DSO150 kit be made into a version of the Morse Tutor?
Bob,
I think it could work.
$15 is a great price on the DSO150.? ?I haven't seen it below $20. Do you have a link?
Bruce
On Thu, Jun 11, 2020 at 7:21 AM GM4CID < gm4cid@...> wrote: I recently put together one of the very cheap ($15) toy digital oscilloscope products from JYE Tech, the DSO150, see?
The main board comes fully assembled and tested, with an STM32, rotary encoder and attached colour TFT, circuit diagram at
Could this become a neat Morse Tutor with some work to the sketch and a little hardware in place of the supplied analog board?
73,
Bob GM4CID
|
Ken KM4NFQ
Bruce Hall