Recent content by tjw

  1. tjw

    Karaoke

    thanks, @SeaGtGruff.... this keyboard seems pretty capable and useful.....
  2. tjw

    Karaoke

    If you are using a Windows PC, I can probably help you. If you're using Android or Apple, I'm going to defer to the folks on here who are familiar with those. I have no background at all with either of them. There are some people on here who are expert-level at this stuff..... The only...
  3. tjw

    Karaoke

    I'm sorry to hear of your challenge. However, very remarkable things can be done with sequencing. I want to encourage you to branch out beyond your hand limitations - hookup your E543 through the USB port to a personal computer or tablet. Download some sequencing software and take a run at...
  4. tjw

    Karaoke

    Playing chords which are already played on the track will not add to the music you produce very much. In current scenarios, many very good keyboard players play to a track in live performances, however, their additions to the music are worthwhile and interesting embellishments more than chord...
  5. tjw

    HELP I got an old Accordion with Midi interface

    Can you trace these wires from the MIDI jack to where they are re-attached onto the circuit board. and follow the circuit board trace to a device? BTW - I was reading through a very old (1996) MIDI spec which states that pin 2 of the MIDI in jack should be left unconnected. This is consisitent...
  6. tjw

    HELP I got an old Accordion with Midi interface

    You can confirm whether pins 4 and 5 are shorted by checking with your ohmmeter. I am also confused. Standard MIDI adapters do not supply power to the instrument. The V++ (pin 4) is a current source (see the diagram @happyrat1 sent you on this thread earlier). It shows that the 5-volt power...
  7. tjw

    HELP I got an old Accordion with Midi interface

    Thanks @Edgar Scheffers for that info..... that makes more sense to me now
  8. tjw

    Finding a piano when you travel

    I'd check with the churches in the areas where you travel. It has become commonplace for churches to have well-designed electronic pianos. The acoustic pianos in churches are notoriously tuned badly and in sore need of repair.
  9. tjw

    HELP I got an old Accordion with Midi interface

    The person who worked on the exact system may be correct, saying it was a 12 volt supply. The reading you get between chip pin 14 and MIDI pin 4 looking "open" may be telling us that there is a voltage regulator inside the accordion that we are not seeing in the pictures. But this is pure...
  10. tjw

    HELP I got an old Accordion with Midi interface

    So far we have only talked about one MIDI connector. Does the accordion have two MIDI connectors, or only one ? If only one, does it function as MIDI out or as MIDI in ?
  11. tjw

    HELP I got an old Accordion with Midi interface

    Yes, that high resistance scale is megohms. The 0 ohm indication you get using the low scale between chip pin 7 and MIDI pin 2 is consistent with our "picture" that @happyrat1 sent you. I think this shows that the circuitry is intended to derive it's power supply return through the MIDI pin...
  12. tjw

    Playing by ear

    There was an organist named Reginald Foort - When I was a beginning organist (62 years ago :) ) he had published a set of "breaks, runs, and fill-ins" which my folks bought for me. I wasn't able to find this publication on the internet, I did find a plethora of links about the man himself, I...
  13. tjw

    Playing by ear

    You might find this article interesting: https://evangelisticpiano.com/introduction_to_runs_and_fills
  14. tjw

    HELP I got an old Accordion with Midi interface

    In those pictures, the three integrated circuits I can read part #s on are all 5-volt devices. The same is true of the SN74LS164N devices you showed on the display board picture. If you want to humor an old man...... using your ohmmeter function on your DVM, on the lowest-resistance scale...
  15. tjw

    Simple midi file question

    love it !!!:)
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