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I recently built an LC meter that is based on the famous AADE design. If you are interested, please check out the links below. Many thanks to Ken KM4NFQ for reviewing the documentation. Bruce w8bh.net Part 1: Builder’s Guide: http://w8bh.net/LCmeter_BuildersGuide.pdf Part 2: Software Review (pending) Part 3: User’s Guide (pending) Full Source Code: https://github.com/bhall66/LC-meter Test Sketches: https://github.com/bhall66/LC-meter/tree/main/diagnostics Schematic: http://w8bh.net/LCmeter_Schematic.svg Interactive BOM: LC Meter - BN49 BOM (w8bh.net) PCB Gerbers: https://github.com/bhall66/LC-meter/tree/main/PCB

Hi guys: I have the following available for Bruce's LED tester. 1: PCB with some parts (only 1 set of parts available as follows) Digital Pot IC - $1.58 6 each 200K 1% resistor - $4.10 100K resistor 1% - $0.60 2 each SPDT slide switch - $0.96 12pos .1 connector - $0.82 14 pos IC socket - $0.73 PCB - $2.52 Shipping (1st Class USPS) $4.75 (US ship only) Total - $16.06 (via friends & family Paypal) 2: I have 3 more PCB's that will go for $2.52 + $1.08 postage in a regular envelope (EACH). $3.60 total, Paypal friends & family. The $2.52 cost for the PCB's is what I paid JCLPCB, $12.60 total for 5 each. The Digikey parts are the same cost I paid. If you are interested, please let me know. Ken WB2ART The Villages, FL

The Koch method: What is the koch method? The Koch method, named after German psychologist Ludwig Koch, which uses the full target speed from the outset but begins with just two characters. Once strings containing those two characters can be copied with 90% accuracy, an additional character is added, and so on until the full character set is mastered. It's based on learned reflexes, and is arguably the best and fastest method available! Learning at speeds below 15 WPM is strongly discouraged because building reflexes does not work at slow speeds. More info about Koch's method here: https://www.qsl.net/n1irz/finley.morse.html How morse code sounds at 15 wpm: https://youtu.be/EewFLTsHlFg https://youtu.be/JskAldoROMM A graphical representation of what is possible at different speeds. These speed "limits" are approximated, it's easy for someone who handles 30 wpm to go slower. https://github.com/Supermagnum/SuperKoch/blob/master/Screenshot_20210102-035710__01__01__01__01__01.jpg Something interesting happens when one can handle speeds above 30 wpm, you will start to hear the complete word! But, there is a thing.. NO ONE HAS USED THIS METHOD TO TRAIN A PERSON HOW TO RECEIVE AND SEND! It should work for both as it will teach muscle memory. There are NO software that can teach both, only receive to my knowledge. Koch himself, with hand-picked students, got a group to master receiving 12 wpm code in a mere 13.5 hours! That's much faster than any other method in the psychological literature. How the software should work,and it's modes: It should keep track of the users progress,time used and other statistics. Some of it may be posted to https://lcwo.net/ if an API is available. Cross platform ( Linux, Windows and mac ). USB connectivity. Training mode: First the program sends a series of K's in CW for 30 seconds while the character K is displayed. Then it repeats the procedure with the character M. When that is complete it sends a four characters group using K and M in random places without displaying the signs. It then waits for a four characters input using the keyboard or the morse device, shows the characters you have gotten correct in green, the wrong ones in red. That continues until the user has gotten 90 % correct of a number of groups, then a new letter is introduced ( for example X ), it is sent for 30 seconds while the character is displayed. Then the lesson continues using the new character until 90% of groups is correct, a new character or prosign is introduced and the lessons continues until all characters are learned. It may also be possible to display the character K and send the character in morse 5 times and wait for 4~10 around seconds for the answer using the morse key or keyboard. There should be not to harsh timing requirements on receiving, some normal slack should be permitted as long as the CW decoder can decode perhaps 70% of the transmitted CW it should be good. It should also support multiple users on the same software instance. It should also display statistics of a users progress and time used. The slowest permitted speed should be 13 WPM. Any speed below this is wasted time. It should also be possible to adjust the mininum and maximum number of characters in the groups and if they are of random size. It should support Farnsworth timing, characters are sent at the same speed as at higher speeds, while extra spacing is inserted between characters and words to slow the transmission down. The advantage of this is that you get used to recognising characters at a higher speed,the characters does not "blend together" as easily and thus it will be easier to increase the speed later on. Realistic mode: Available during Realistic mode: signal fading and white noise to imitate more "realistic conditions", as Hannes Matuschek Kochmorse has it. It is available at: https://github.com/hmatuschek/kochmorse . Kochmorse does have a CW detector, but it can't be used to input characters during learning how to receive Morse and it seems not to support winkeyer interfaces. Morse alphabets that should be used : Primarly I

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Greetings, I recently built the LED Tester on a breadboard. As I built the circuit, I drew a few diagrams. The diagrams are organized in an HTML page that can be viewed with a web browser. Bruce W8BH, put my notes up at his GitHub account: https://github.com/bhall66/LED-tester The latest documentation for the W8BH LED tester is now available. This is a fun project that results in a very useful piece of test equipment. A while back I bought a few Grab Bags of LEDs without any documentation. Also, this will be a helpful tool for figuring out what all those loose LEDs in the junk box are. Hopefully helpful. -- Regards, Ken, KM4NFQ "Not Fully Qualified" /g/w8bhMorseTutor

Does anyone in the group have an extra bare pocket tutor pc board they would be willing to part with? Thank you. Jim Pruitt WA7DUY

Bruce, Thanks for the keyer design, on my future list of projects to be sure! As a note, a while back I experimented with several USB shields for Arduino like https://www.amazon.com/gp/product/B01MTU9OLM/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 and https://www.amazon.com/gp/product/B01EWW9R1E/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 The first pretty much worked out of the box and I seem to remember that I got the second one working t0o. They both have some sample keyboard reading software. Proved that to my satisfaction that it basically worked, but didn't stress test it at all. I used it with a mini wireless keyboard: https://www.amazon.com/gp/product/B01CE70TZC/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Just a thought if anybody wants to take your design and add USB (wired or wireless) connection to your keyboard design. Definitely more expensive than your solution, but the wireless mini keyboard has interesting possibilities for SOTA, etc. 73 Mark AJ6CU

I can't find the gerbers for the GPS clock. Does anyone know where to find them? Thank you

The following breakout board is not nearly as clever as Ken's design, but it's what I used when breadboarding the keyboard keyer. Description: http://w8bh.net/ps2_breakout.pdf PCB Gerbers: https://github.com/bhall66/PS2-Breakout Bruce w8bh.net

I was just noticing that there are no files in this group's files section: /g/w8bhMorseTutor/files not a single file. I know Bruce has the stuff for his Tutor's on his web site and gerbers on his github feed but others have contributed info to this group in files via messages but nothing is saved in the files section for reference in the future. With that said, I wonder if anyone has a 3D STL file for the Pocket Tutor enclosure (for 3.2 inch display and other sizes) or has a link to one? Thank you. Jim Pruitt WA7DUY

I have been acquiring parts for the W8BH Pocket Tutor but am having trouble sourcing the DMP2054U-7 P channel mosfet. Digikey has none and long wait. Mouser has none and long wait, Newark has none and long wait. All 3 have searches for similar devices but find none. What can sub for this part? I ordered some things from Newark and that was a HUGE MISTAKE! I was charged $648 for my $173 order that was supposed to ship free and about half of it came from the UK including the MCP738310-2. At any rate, if anyone knows a suitable substitute for the DMP2054U-7 I would be interested in knowing what it is. Thank you. Jim Pruitt WA7DUY

Hi Bruce, Was able to get everything up to the Checkout for the keyboard to work. Now I have an error that says; “Invalid library found in C:\Users\halea\Documents\Arduino\libraries\EasyKey: no headers files (.h) found in C:\Users\halea\Documents\Arduino\libraries\EasyKey” Cannot seem to work around this. Perhaps you have run across this in your programming? All else has been successful thus far. All for now, Allan, WA9IRS Sent from Mail for Windows

Greetings, This was linked on page 14 of the August 2021 issue of the NAQCC Newsletter: https://www.n9bor.us/index.php/morse-code/the-art-skill-of-radio-telegraphy http://www.naqcc.info/newsletter_current.pdf Regards, Ken, KM4NFQ "Not Fully Qualified" /g/w8bhMorseTutor

I just looked at Digikey and they are listing the MCU as on back order with no lead time listed. Does anyone have a source for this mcu that actually has them in stock and available? Thank you. Jim Pruitt WA7DUY