<p>Digital ICs from the CD4000 series CMOS are great fun and CHEAP to add. And, quite easy! Just remember to not leave the input legs on the chips floating kids! But yeah one cool trick you can do (hope Tom Bugs doesn't mind). You can have cascading ring mods. Basically take osc 1 and osc 2 and with two diodes, 2 100k resistors a 4011 cmos chip and a 47k resistor on the output and you have just ring modded osc 1 and 2 together. Now here is the fun. Do the same exact thing to 3 &amp; 4. The take the two outputs from those two ring mods and ring mod them again. This is akin to what Tom does on his Weevil boards he RMs osc 1 and osc 2 then takes the output of that RM and RMs it with osc 3. You could also get you a 4069 or another 40106 and make an envelope follower with just a few items and feed it into  one of the CVs that I probably expounded too much on in caspers CV article on forum. Another cool one to do as a cool addon to the drone lab this one takes a few more parts not much but a few, you could with two 4007 chips and a 40106 add pulse width modulation to each of the oscillators. Couple this with CV inputs and you can have some wild sounds. Lots of these things can be made into small building blocks like Casper is proposing to do, it would just require a bit of fiddling with the main board to add CV in/outs in a few places and then use his break out spots on the board. :( too bad he just made a new super duper cool board , i think i saw with more nooks and crannies to mangle) Also one really cool thing to add, but a little complex is IR synching. This will allow drone lab to keep its clock in synch with a lot of Eric Archers Andromeda space rockers and also 4ms has one that is CRAZY cool called the autonomous bassline generator (I caan attest it makes a great addon to the drone!)  With the IR Synch all devices keep the same beat by sending and receiving IR light pulses. If people are wanting lots and lots more CMOS ideas that let you get wild sounds on the cheap look in the electro forums group or write me a message here I might be able to help. For my project I have amassed about 70 different little doodads I will be putting out. Sorry cant give out too much info yet :( Ohhh...I will quit rambling I promise, one REALLY cool thing to do with your outputs on the drone lab is add a (this takes a add on board for each oscillator but its worth it!) a complex waveform generator. So instead of plain jane square waves you can seriously mess it up. Basically with each output of 40106 you add two more chips and 8 (EIGHT!!) 10k pots.</p>
<p>Have fun folks! I am trying to with crazy schedule. I only get to work on this stuff at night. So basically I never sleep now :)
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