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#QSX suggestion: E-ink display?

#qsx

N1EDC All Messages By This Member #33031 I was browsing around and I found that you can get small e-ink displays for very reasonable prices: They have very low power consumption, especially standby power (they essentially only draw current when changing the display), and are easily readable in direct sunlight, so may make a good option for a display for an outdoor radio. The disadvantage is that they have a pretty slow refresh time and don't handle moving images well, so fast tuning or an s-meter may not work well. Thoughts?
jjpurdum Member Profile All Messages By This Member #33032 I'm using a 2.2" TFT SPI display in my Morse Code Trainer: and it draws about 0.06A, not great, but not that bad, either. The key thing for me is the quality of the libraries that support the display. Also, the cost is pretty reasonable at under $6 (eBay #163356024114).. On Thursday, March 28, 2019, 8:32:33 AM EDT, KE0GYC <dragonfanatic90@...> wrote: I was browsing around and I found that you can get small e-ink displays for very reasonable prices: They have very low power consumption, especially standby power (they essentially only draw current when changing the display), and are easily readable in direct sunlight, so may make a good option for a display for an outdoor radio. The disadvantage is that they have a pretty slow refresh time and don't handle moving images well, so fast tuning or an s-meter may not work well. Thoughts?
Gerry Kavanagh All Messages By This Member #33036 Do you mind if I ask for some details on the morse code trainer, Jack? / Gerry
jjpurdum Member Profile All Messages By This Member #33039 Not at all. In the photo, the Receive menu option has the Morse Code Trainer (MCT) able to send Letters, Numbers, Punctuation, Words, Letters and Numbers, Call Signs, and a mock QSO. All are randomly generated so you can't memorize them. The mock QSO generates what might be the content of a? "typical" QSO and includes randomly generated signal and weather reports, names, QTH, antennas, rigs, etc. Sending is done via the Koch Method with a little Farnsworth blended in. For example, if you hope to reach 30wpm, the Koch method starts you at 30wpm, which is just over two letters per second. This forces you to listen to the rhythm of the letter instead of counting dits and dahs and then translating it. The Farnsworth Method simply means an exaggerated spacing is used between letters. A beginner might have a target speed of 30wpm, but use a Farnsworth spacing of 5wpm. This gives the user over 2 seconds between letters. Those speeds (as well as sidetone, encoding type, and paddle reversal) are set using the Config menu. Those values are stored in EEPROM. The Send method has you listen to characters and then send them back using a paddle. There's a Flashcard option that sends a letter, flashes on the display, and waits for you to send it. The CopyCat option sends a random call sign and waits for you to send it back...correctly. If no menu option is selected, you can use it as a code practice oscillator. It has a 3W audio amp in it, so it could be used for a CPO in a classroom. The display does have an SD card reader on the back, so it is possible to have Gone With The Wind in ASCII on the SD and listen to it in CW as you make that long drive between NYC and LA. I have not implemented that...yet. If you don't have a junk box, the cost should be under $20. I'm making it open source. Jack, W8TEE On Thursday, March 28, 2019, 11:59:44 AM EDT, gerrykav via Groups.Io <gerrykav@...> wrote: Do you mind if I ask for some details on the morse code trainer, Jack? / Gerry
Garry Foster All Messages By This Member #33075 Jack I over use the word some but that us an awesome project. Garry? 73 toggle quoted message Show quoted text On Thu, Mar 28, 2019, 1:14 PM jjpurdum via Groups.Io <jjpurdum=[email protected]> wrote: Not at all. In the photo, the Receive menu option has the Morse Code Trainer (MCT) able to send Letters, Numbers, Punctuation, Words, Letters and Numbers, Call Signs, and a mock QSO. All are randomly generated so you can't memorize them. The mock QSO generates what might be the content of a? "typical" QSO and includes randomly generated signal and weather reports, names, QTH, antennas, rigs, etc. Sending is done via the Koch Method with a little Farnsworth blended in. For example, if you hope to reach 30wpm, the Koch method starts you at 30wpm, which is just over two letters per second. This forces you to listen to the rhythm of the letter instead of counting dits and dahs and then translating it. The Farnsworth Method simply means an exaggerated spacing is used between letters. A beginner might have a target speed of 30wpm, but use a Farnsworth spacing of 5wpm. This gives the user over 2 seconds between letters. Those speeds (as well as sidetone, encoding type, and paddle reversal) are set using the Config menu. Those values are stored in EEPROM. The Send method has you listen to characters and then send them back using a paddle. There's a Flashcard option that sends a letter, flashes on the display, and waits for you to send it. The CopyCat option sends a random call sign and waits for you to send it back...correctly. If no menu option is selected, you can use it as a code practice oscillator. It has a 3W audio amp in it, so it could be used for a CPO in a classroom. The display does have an SD card reader on the back, so it is possible to have Gone With The Wind in ASCII on the SD and listen to it in CW as you make that long drive between NYC and LA. I have not implemented that...yet. If you don't have a junk box, the cost should be under $20. I'm making it open source. Jack, W8TEE On Thursday, March 28, 2019, 11:59:44 AM EDT, gerrykav via Groups.Io <gerrykav=[email protected]> wrote: Do you mind if I ask for some details on the morse code trainer, Jack? / Gerry
Joe Street All Messages By This Member #33092 Yes I have to raise a little sand on that account as well.? Good going Jack!? With cw activity declining on the bands these days a nice hardware tool like that can really be a pseudo elmer for anyone who doesn't have access to a live one.? I know the CWops crew are doing fine business also with thier academy program but having a piece of harware in your pocket you can take anywhere and practice whenever it is convenient seems like a perfect application for a little microcontroller project and the time is certainly right for it. Joe ve3vxo toggle quoted message Show quoted text On Sat, Mar 30, 2019 at 10:03 AM Garry Foster <gmfoster@...> wrote: Jack I over use the word some but that us an awesome project. Garry? 73 On Thu, Mar 28, 2019, 1:14 PM jjpurdum via Groups.Io <jjpurdum=[email protected]> wrote: Not at all. In the photo, the Receive menu option has the Morse Code Trainer (MCT) able to send Letters, Numbers, Punctuation, Words, Letters and Numbers, Call Signs, and a mock QSO. All are randomly generated so you can't memorize them. The mock QSO generates what might be the content of a? "typical" QSO and includes randomly generated signal and weather reports, names, QTH, antennas, rigs, etc. Sending is done via the Koch Method with a little Farnsworth blended in. For example, if you hope to reach 30wpm, the Koch method starts you at 30wpm, which is just over two letters per second. This forces you to listen to the rhythm of the letter instead of counting dits and dahs and then translating it. The Farnsworth Method simply means an exaggerated spacing is used between letters. A beginner might have a target speed of 30wpm, but use a Farnsworth spacing of 5wpm. This gives the user over 2 seconds between letters. Those speeds (as well as sidetone, encoding type, and paddle reversal) are set using the Config menu. Those values are stored in EEPROM. The Send method has you listen to characters and then send them back using a paddle. There's a Flashcard option that sends a letter, flashes on the display, and waits for you to send it. The CopyCat option sends a random call sign and waits for you to send it back...correctly. If no menu option is selected, you can use it as a code practice oscillator. It has a 3W audio amp in it, so it could be used for a CPO in a classroom. The display does have an SD card reader on the back, so it is possible to have Gone With The Wind in ASCII on the SD and listen to it in CW as you make that long drive between NYC and LA. I have not implemented that...yet. If you don't have a junk box, the cost should be under $20. I'm making it open source. Jack, W8TEE On Thursday, March 28, 2019, 11:59:44 AM EDT, gerrykav via Groups.Io <gerrykav=[email protected]> wrote: Do you mind if I ask for some details on the morse code trainer, Jack? / Gerry
Roy Appleton All Messages By This Member #33094 Jack, when, how and where will this great project be available? Roy WA0YMH
jjpurdum Member Profile All Messages By This Member #33097 This project is the subject of my FDIM talk, so I will likely make it and the code available after that (mid-May). It is also in Chapter 7 of the new Projects book Al and I are writing. We plan on having all of the projects in the book available with a PCB when the book is published. (Probably year's end.) However, the Morse Code Tutor circuit is so simple,? I doubt that there is a need for a PCB, so I built it on perf board. Jack, W8TEE On Saturday, March 30, 2019, 7:57:54 PM EDT, Roy Appleton <twelveoclockhigh@...> wrote: Jack, when, how and where will this great project be available? Roy WA0YMH
Roy Appleton All Messages By This Member #33100 Thanks for the update! Roy WA0YMH toggle quoted message Show quoted text On Sat, Mar 30, 2019, 10:10 PM jjpurdum via Groups.Io <jjpurdum=[email protected]> wrote: This project is the subject of my FDIM talk, so I will likely make it and the code available after that (mid-May). It is also in Chapter 7 of the new Projects book Al and I are writing. We plan on having all of the projects in the book available with a PCB when the book is published. (Probably year's end.) However, the Morse Code Tutor circuit is so simple,? I doubt that there is a need for a PCB, so I built it on perf board. Jack, W8TEE On Saturday, March 30, 2019, 7:57:54 PM EDT, Roy Appleton <twelveoclockhigh@...> wrote: Jack, when, how and where will this great project be available? Roy WA0YMH
Patrick Sullivan All Messages By This Member #33112 This looks a bit like the Morserino, which I'm also excited about: 73 de AC3K
jjpurdum Member Profile All Messages By This Member #33115 Seems a tad expensive... Jack, W8TEE On Monday, April 1, 2019, 12:20:35 AM EDT, Patrick Sullivan <expatrick@...> wrote: This looks a bit like the Morserino, which I'm also excited about: 73 de AC3K
Gerry Kavanagh All Messages By This Member #33116 Looking forward to it. I hope to have the pipeline cleared by then - unless Hans releases the OSX. Is it running on an Arduino or a bare Atmel micro? / Gerry
jjpurdum Member Profile All Messages By This Member #33117 Gerry: Not sure you're addressing me and my Morse Code Trainer (MCT), but I'll assume you are. The microcontroller used for the project is an STM32F103. It has 128K of flash memory, 20K of SRAM (the real bottleneck on the Arduino family), and is clocked at 74MHz (4.5x the Nano). It can be programmed with the Arduino IDE. We prefer the Maple Mini version () as it has an easy to use bootloader. Pay attention if you buy (aka "Blue Pill") as some of the cheaper ones are the 64K variety with no bootloader. If you want a good source of info about it, try: . This guy has forgotten more about the STM32F series than I'll ever know. In any event, even the big stores sell it for under $5. I think we paid $30 for 10 of them. Jack, W8TEE
Shirley Dulcey KE1L All Messages By This Member #33120 Isn't the OSX an Apple product? The QSX does not use either an Arduino or a bare ATMega. It uses an ARM microcontroller. The ATMega would be far too slow for the DSP computations done in the QSX. On Mon, Apr 1, 2019 at 8:58 AM gerrykav via Groups.Io <gerrykav@...> wrote: Looking forward to it. I hope to have the pipeline cleared by then - unless Hans releases the OSX. Is it running on an Arduino or a bare Atmel micro? / Gerry
Roy Appleton All Messages By This Member #33121 Just what I was thinking! Roy WA0YMH toggle quoted message Show quoted text On Mon, Apr 1, 2019, 7:25 AM jjpurdum via Groups.Io <jjpurdum=[email protected]> wrote: Seems a tad expensive... Jack, W8TEE On Monday, April 1, 2019, 12:20:35 AM EDT, Patrick Sullivan <expatrick@...> wrote: This looks a bit like the Morserino, which I'm also excited about: 73 de AC3K
Gerry Kavanagh All Messages By This Member #33144 @Shirley I was asking Jack about his Morse Code Tutor. Apologies for the typo. Had eye surgery recently so sometimes I miss things. / Gerry

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