|
Greetings,
I have put my build notes up on Google Drive at: https://drive.google.com/open?id=11z8o1TdftJ3L4lMulJt85jp3l_sfvTff They are in PDF format with a size of 2M. A short video clip of my build is on YouTube at: All of the ESP32 Rev 2B PCBs that I have are already spoken for. Questions, comments, error reports? Regards, Ken, KM4NFQ "Not Fully Qualified" /g/w8bhMorseTutor |
|
Greetings,
I just finished the first W8BH Morse Tutor (ESP32 Rev 2B) board and posted a short clip on YouTube: https://www.youtube.com/watch?v=-hPkAeXV-OM I am building two at the same time, following the excellent Build Guide, located at: When I am finished adding the audio section to the second board, I will post some Build Notes. Regards, Ken, KM4NFQ "Not Fully Qualified" /g/w8bhMorseTutor |
|
Hello Kevin, K3TL,
I ordered two of these 3.2 inch displays: https://www.ebay.com/itm/383327432771 You can compare what you got with that one? You may want to wait until I build my first ESP32 PCB to see if the ones I ordered work? I will be posting my build notes to this thread. Regards, Ken, KM4NFQ "Not Fully Qualified" /g/w8bhMorseTutor |
|
Two 3.2" displays arrived today, the 16th of January. They were shipped from China on the 4th of January, so that took about 13 days. Not bad. Plus the tracking for this package was very good. I cannot say the same thing for the 2.8" displays I ordered on the same day, which, as far as I can tell, are still somewhere in China.
I will start building the ESP32 Rev 2B PCBs tomorrow. -- Regards, Ken, KM4NFQ "Not Fully Qualified" /g/w8bhMorseTutor |
|
Ken, Great job!? Thanks for posting this cute little pcb.? ?I had fun trying all sorts of paddles. Here is a short video with oranges:? Bruce On Sat, Dec 28, 2019 at 3:22 PM Ken KM4NFQ <km4nfq@...> wrote: I have put my KiCad 5.0.2 files up at GutHub: |
|
Rev 2B Completed!
#esp32
Thanks for your work on this Bruce! Finally the last piece arrived today (the 3.2" screen)! Me and my little guy are having fun with the final result.
That being said, I already have some new items on my list: 1.? Design and 3D print a case 2.? Work on a new design that removes the knobs and utilizes the touch feature of the 3.2 inch screen 3.? Switch to Lora for CW transmission. 4.? Use ADC for sidetone generation This second item will take substial work, but will result in a much smaller (just a little bigger than the screen) device and would be a fun improvent. The third item should result in the sending of actual Morse over the waves for listening by any receiver on the country appropriate license free bands. The fourth is more exploratory. It may not be practical or valuable. We'll see ? Thanks again for this project, it has really gotten my gears turning. Nick/NC7BC |
|
Greetings,
The ESP32 Rev 2B PCBs that I ordered from JLCPCB on 20 DEC 2019 arrived today, 13 days later. That is ten days faster than my first PCB order from JLCPCB. I chose the Economy shipping option this time as well. I was trying to beat Chinese New Year, which is on the 25th of January 2020. Evidently, China businesses shut down for Chinese New Year Holidays because everyone goes home. 'Home' for the Chinese living in the city is usually somewhere in the country. Anyway, this year I beat Chinese New Year. These are beautiful boards! Thanks Bruce! You are a Gentleman, a Scholar, and a fine Craftsman as well. I hope that one day I can make such a nice board using KiCad. You worked F.Cu as well as B.Cu. Well done! These PCBs are 100mm x 98mm. They are double sided. There are two choices available for the display. I can mount either a 3.2" TFT display on the board, or a 2.8" TFT display on the board. It looks like the display, the Volume knob and the Rotary Encoder are mounted on the front of the board. The Speaker, Audio Jacks, Barrel Jack, Amplifier module, and Mini-360 buck converter are mounted on the back of the PCB. The silkscreen layer is very sharp looking, easily identifying where each component and module needs to be placed. I am looking forward to putting a couple of these boards together. I will have to order a couple of displays first, so it may take awhile before I can show a finished PCB. Total cost for five PCBs, including shipping and handling was $8.64. That comes out to be about $1.73 per board. I already have everything, except the display module. So I'm going to order those today. I am leaning toward the larger display because these old eyes need all the help they can get. (8>{D= Regards, Ken, KM4NFQ "Not Fully Qualified" /g/w8bhMorseTutor |
|
I have put my KiCad 5.0.2 files up at GutHub:
I added mounting holes and corrected a misspelled callsign. I have no idea if the construction files will work for anyone else, but the Gerbers are good. Attached are a couple of screenshots of the 'Preview' PCBs at JCLPCB (green) and OSH Park (purple). -- Regards, Ken, KM4NFQ "Not Fully Qualified" /g/w8bhMorseTutor |
|
This is a short clip of my newly soldered and wired M0UKD Capacitive Touch Key plugged into an ESP32 version of the W8BH Morse Tutor.
It is very sensitive. I am accustomed to lightly touching the paddles with my fingers when keying. With this key I am not able to do that. The slightest touch sends a DIT or a DAH. This is my first KiCad 5.0.2 schematic and PCB. I generated the Gerbers from the PCB. I sent the Gerbers for the board to OSH Park on 11 December 2019 and got them in the mail today, 27 December 2019. I am very pleased that the circuit works so well. There are a total of ten SMD components on the board. I soldered them with solder paste and a hot air gun. My PCB mistakes include a misspelling and I forgot to make mounting holes. I can live with the misspelling, and I drilled my own mounting holes. This is my fourth homebrew Key, and my third paddle. I ordered the ESP32 rev 2B boards from JLCPCB, and according to the tracking reports they are In-Transit. I expect a minimum of at least three weeks since I got the Economy S&H. -- Regards, Ken, KM4NFQ "Not Fully Qualified" /g/w8bhMorseTutor |
|
ESP32 DAC
#esp32
While I've been waiting for all my parts to arrive... I've been playing around and looking through docs and ESP32 specifications more. During this time, the board changed, and I couldn't put together a brand new MorseTutor without the latest board :D Amazingly, JLCPCB has been very fast and cheap, and now I have 5 Rev1 and 5 Rev2's :p? (All the parts are yet to arrive :( ) But now, as I look closer at the schematics, I'm wondering if an opportunity hasn't been missed in the current design. I'm noticing that the speaker is driven from a normal GPIO port with PWM. The ESP32 has 2 DAC's on it. But they are only on ports 25 and 26. Wouldn't using the on-board DAC make for a better sounding tone? If so, we up for a rev 3 :P?
|
Ken KM4NFQ
Bruce Hall
Nick Clark
