DIY S4 question: How to recreate the loop-size LCD display

**MiL0** · 10-13-2010, 09:34 AM

Anyone have any ideas how this could be achieved? If you look at the S4, on each deck it has a 2 digit LCD display showing the current loop size. This can be changed by rotating an encoder. I'm guessing that it's possible for Traktor to output the current loop size via midi but how/what would you send this to? There's probably a way to do it using Midibox hardware but I'm looking for a cheaper/easier solution... any ideas?

One way would be to use a different LED for each loop size (1,2,4,8,16,32,etc) and then illuminate the corresponding LED when the loop size is changed... would be nice to use a 2 digit calculator style LCD though...

**pumpkin2themax** · 10-13-2010, 09:31 PM

MidiBox would definately be the way to go for this, but i guess there are a couple of other options.

1)Arduino-I don't know much about this system, but I know it's very robust. I'm sure an LCD screen could be adapted.

2) http://www.djtechtools.com/forum/showthread.php?t=18512 - MiL0 usees a USB LCD screen to display traktor output.

3) As you mentioned, use LED's to emulate an LCD screen

**Unimagination** · 10-14-2010, 11:02 AM

^ It's a little funny that you linked to MiL0's handiwork when suggesting possibilities to... MiL0 lol.

**MiL0** · 10-14-2010, 12:25 PM

:P

so I'm guessing the LCD is done using NI custom hardware then... ah well...

**midifidler** · 10-14-2010, 05:51 PM

They are 7 segment displays, you will need some processor to receive the midi, then some extra electronics to drive the display

**pumpkin2themax** · 10-14-2010, 10:05 PM

Originally Posted by Unimagination

^ It's a little funny that you linked to MiL0's handiwork when suggesting possibilities to... MiL0 lol.

wow.. im an ass

lol

**diezdiazgiant** · 10-15-2010, 12:16 AM

that made lol

and then because i am so sick the lol was followed by a long series of wretching hacks and coughing from the liquid in my lungs

**Str8upDrew** · 10-15-2010, 04:31 PM

Is it possible to map each loop size to multiple outputs??(I've never really tried)
But if it is, then you could just use some 7 segment displays, and the custom hardware of your choice, and just map each loop size to the appropriate leds on the displays.