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Keith Tanner
Keith Tanner GRM+ Memberand MegaDork
9/24/21 3:13 p.m.
Junghole said:

It now needs retro modded like most of my electronics. 1200mah lipo, usb-c, wireless Qi, led backlighting, Nintendo switch speaker, etc. 

It's got full RGB on each key and there's a little squawker in there. I've got loads of space to store a battery, that wouldn't be that big a deal I don't think. Gotta look to see if the board has a power input other than the USB.

Videos from development!

Here's the "Echo" game. You start by choosing a length. It plays a random sequence of that length and you have to play it back. Then you get scored.

Because it's similar but different, I also programmed in Simon. Merlin lights up one key, you press it. It adds one to the sequence, you play it back. It keeps going until you screw up and then you get a score. Psychologically it's quite different from Echo as the stakes are always being raised. I can display scores of up to 49 (I think), which is more than enough.

Music Machine, aka the sequencer. A full octave plus a a fourth down and a fifth up and a rest. You enter a tune and it plays it back. I added the tempo control because I can, and because I liked it I also implemented the tempo on Echo and Simon so you can make it really hard :)

I haven't done blackjack yet, that's next. I should do tic-tac-toe as well but it's a really boring thing to program. I'm also still working on the color schemes.

It's funny, I don't remember the membrane keys specifically. But I notice that the reissue has traditional buttons. Also, Eric dredged up this alternate universe unit from Japan. Meet Dr Smith.

https://www.ebay.ca/itm/293160982472

Keith Tanner
Keith Tanner GRM+ Memberand MegaDork
9/25/21 8:34 a.m.

The keyboard surround looks better in red. 

Also, I think it definitely needs an onboard battery for playability.  That's going to be interesting to package - not the battery, but the wiring. 

Keith Tanner
Keith Tanner GRM+ Memberand MegaDork
11/9/21 8:44 p.m.

No progress on this because I've been playing with other things, but I did do a single quick and dirty, unedited video that shows it all off. Well, everything but Mastermind.

 

Portable power is a problem. I have loads of room to stuff a battery inside and I can power it via the USB-C port, but I also need to be able to connect to the laptop for programming. Maybe with some soldered connections. I'm still thinking about it. And no, I haven't connected it to the DX7 for MIDI control yet :)

codrus (Forum Supporter)
codrus (Forum Supporter) GRM+ Memberand PowerDork
11/9/21 11:03 p.m.
Keith Tanner said:

Portable power is a problem. I have loads of room to stuff a battery inside and I can power it via the USB-C port, but I also need to be able to connect to the laptop for programming. Maybe with some soldered connections. I'm still thinking about it. And no, I haven't connected it to the DX7 for MIDI control yet :)

You're using a Pi?  It's not too hard to unsolder the power pins from the the USB port and wire them up to a power supply instead.

 

Keith Tanner
Keith Tanner GRM+ Memberand MegaDork
11/10/21 8:09 a.m.

It's an Adafruit Macropad, which is an RP2040 on a custom PCB. Things ar a little tight.  I don't think soldering is impossible but it's a bit more difficult than with a Pi. With the Pi, I'd just feed it into the power pin in the gpio header. 
Thr thing does have a Stemma QT connector with a 3.3v output, I'm not sure I can feed it from there. I'll find out. 

David S. Wallens
David S. Wallens Editorial Director
11/10/21 12:34 p.m.

Wow, never had one BITD but knew people who did. 

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