Now that Christmas is over, I’ve had chance to build the kit I bought from highly liquid. I’ve had a few of these in the past, and they are really good quality and easy to build and use, highly recommend!

Took about an hour to build and about 15 minutes to install into my dr-110 to replace the arduino-midi converter I whipped up on strip board that was in there.

Well my triangle waves are nice and triangley…. How ever the square waves need a little work!

a new scope for Christmas!!! Time to start production of some new toys and synths me thinks!

Hope everyone had a good christmas!

a few dead prototypes. Some just aren’t meant to be….

Now optimised for all good smart phones!!!!

Well, mostly all of it, still having problems with audio… Let me know if you find any other faults.

for the time being all comment postings are closed, please email me for any info or discussions. sorry for the inconvenience.

bod

my dr-110 arrived last week and i promptly set about dismantling it to modify. the dr-110 was one of the last analogue drum machines produced by boss and was severely lacking in control over the drums. as standard it came with accent, tempo, volume and balance control.

there are two great sources of mods for these machines, dave magnuson of resonant frequencies, for which the website has been down for some time, but there’s copies of the pages available to download from the electro-music forum, and a guy called rob from this page.

i’ve added mods mainly from daves, and a couple from robs huge list, and the results are phenomenal! i know have 13 additional pots, and the whole lot is being rehoused in a mini flight case thing i found in maplin for a tenner in the sale.

i’m writing a page on the mods i did so check back for the results.

my trusty HR-16 (or one of them at least) has bit the dust. think i have a fault in the master reset circuit, according to the service manual.

it was the one with the led’s as well. what a waste.

i’ve been using the arduino for midi input and output for a while now, mainly using kuk’s input method, output is easy enough though. midi input had me stumped for a while, but he found adding 100k resistor to the base of the phototransistor of the optoisolator created a stable response which sorted it out.

theres alot you can do with variations of his code, and many people have used the circuit to build midi>cv convertors for analogue synths, but at the moment i’m mostly interested in building a clock source for analouge/digital sequencers so i can run them straight from the output of my HR-16 or tr-505 without the need for a computer based midi sequencer. the basic idea is to receive a midi clock byte and advance the count of a 4 bit binary output from the arduino to advance the steps of a multiplexer ic based sequencer.

midi clocks output 24 pulses per quarter note, so this needs dividing down to get the step response you need. the ever useful and highly inspiring code from littlescale comes in handy here!

more soon.

i shall be circuit bending a seal! (cheers phil!)

no seals were hurt/damaged during the making of this clip… and before i get any comments about animal cruelty, i wouldn’t even get it past customs shoved down my pants in the first place, unfortunately. ;O)

although i am intriegued as to what the fuck they do with the blow torch in the dying seconds of the clip!