Leaderboard

Hello, This is an introduction for my new baby, a really funny toy, the HAARP (yes I like conspiracy theory ;) It's a pure MIDIbox Project, just a dedicated CS and some coding. It works with any STM32F4 Core. Why? Many synths have an integrated arpeggiator, the SH-101 is well known for that, but the available parameters are still limited. There is also some good plug-in I think especially of the Ableton live's one but it's software. So I designed an hardware one, "LIVE" oriented, starting from the @TK.'s arp example. No encoder(except for MENU section Data entry), all parameters are directly accessible and are potentiometers. The screen is a small color TFT with a resolution of 128x160(sorry for picture, colors are better in real). It's 8 independent voices. 8 banks of 8 Presets. Session are saved/loaded from the SD Card. The Arpeggio parameters are divided in 3 sections: First is the TIMING Section (Purple pots): On/Off button, HOLD Button, it holds or releases the Notes in the notestack. The MODE Pot, it's UP, DOWN, UP-DOWN and AS-PLAYED, fr the moment but I will implement more. The RATE, from slowest to fastest, from 4 Bar to 32nd with dotted and Triplet value. The RESYNC, it retriggers the arpeggio, values are the same as RATE parameter. The OFFSET, it will shift left or right the starting step(note). Is Note Stack and MODE dependent. The DELAY, it will delay the whole arpeggio within the step range(duration), is RATE dependent. The GATE, the length of the Note, max is STEP length, is RATE dependent. The SHUFFLE, it will delay all the odd steps, in the range of an half step, is RATE dependent. Second is the TRANSPOSITION Section (Yellow, Orange, Red): Simple Transposition On/Off (Yellow). Simple OCTave Transposition, +/- 10. Simple SEMItone Transposition, +/-12 Repeat On/Off. Repeat, LOOPS number, 1 to 8. Repeat, SHIFTing on each loop, +/-32 semitones. Force to Scale On/Off Force To Scale, SCALE, list is the same as the Force to Scale example from the repo. Force To Scale, ROOT from C to B semitone. Third is the VELOCITY Section. REGEN Pre/Post(Target process) button. REGEN, +/- 100% Target process On/Off. TIME, the time to reach the target value, in PRE initial value is the regenerated value. in POST initial value is the one stored in the Note Stack. TARGET is the targetted value, 0 to 127. RETRIG, if on the TIME is retriggered by the RESYNC parameter. The main page of the screen represents an octave range, the note color changes depending on the octave, there's a Velocity section on the bottom, it's like a piano-roll. In the code, the arpeggio processing is ready, it remains me to complete the MENU section, I was waiting for the CS PCB to write it, now I can... ;) This little guy is to much fun, so I can't keep it for me. Then i will propose it to you ASAP. and I hope it will help me to finance some other bigger projects I've got in my back-pocket ;) I will try to make it available in two format, I'm currently working on a PCB for USB host/device, sdCard MIDI etc.. which will fit for both version and will be reuse for other small toys like that. An Eurorack version for the patching addicts. I used a MCP3204(4 channels) instead of a MCP3208(8 channels) for the AINSER, it's an AINSER32. I use only 2 channels for the 16 pots(8Multiplexed lines * 2 channels), it remains 16 analog Inputs which are accessible to connect some CV In Modules, thanks to @Hawkeye for making me think about this. The SRIO Chain is available too, you can connect GATE In (DIN) easily. You will be able to connect the MIDIPHY CV/GATE Out Modules which will be available soon. @latigid on is working on it. MCAN will be available, for an internal MIDI bus within your Eurorack, I reuse the BUS1 and 2 from the Euro Power connector for that purpose. A Desktop version, for MIDI purpose only(except if i find a way to add some CV/Gate without designing a too much big box). Voilà! More information will be available soon. For the moment this is a small video I made, I seem a little febrile but it's because I continue to discover it every day. I really love this little toy, it is very effective and musical, even in LIVE and if the Force To Scale is activated, there's no wrong note ;) Best regards Bruno

@Hawkeye I just remember that I made the "Force To Scale" as a regular module, for quick implementation and use in any app. https://www.dropbox.com/s/q8tais6dmtcnny8/force_to_scale.zip?dl=1

i mixed our sound on stage with our own mixer (like always) with the crappiest crackiest paper monitors i ever heard (you may can send a voice on it, but bass? kick? a stereo summ of EDM > no way!) i sent the stereo-summ to the "sound manager" the sound manager was sent here from church during his "social task year"... he hasent any clue, nor interest, he was sitting there doing "smart"-phone - no it was no "mixer" app ;) the sound manager - managed to get the thinnest silence sound on the floor ever.. and when he heard feedback from our mics, he quickley reduced our Stereo Summ on Main PA > well thank you - not! i drunk 2 beers...then it turned out that i had to build up the main pa, and helped other bands - because the sound manager havent any glue --- what i learnt --- always - always -always take your own Monitors with us, and sent the stereo-sum (if possible) directley to main PA --- hopefully my bandmate learnt this too -because i was the one that wantet to take the monitors with us in first feeling...

Nice, I remember doing it also in front of all my college for a end-year party, my friend, a very good guitarist, improvised while I had only a drum machine. I hope for you things have changed because for us everyone looked at us with big questioning eyes and the sound manager tended to put us in the wheels. lol Best Bruno