ARPIE is minimal, compact, hackable MIDI arpeggiator
An arpeggiator it is a device which takes chords (From a MIDI keyboard, for example) and converts them into rapid sequences of notes, which can then be played through MIDI-compatible synthesizer hardware or software. Arpeggiation is a very common technique in electronica and chiptune music and is an excellent creative technique.
With an ARPIE kit you can build your own fully-featured arpeggiator for much less than the costs of a commercial hardware arpeggiator. In your ARPIE kit you will receive two, high-quality printed circuit boards and all the components and hardware required to assemble the device, including two ready-programmed microcontrollers (Atmega328 and PIC12F1822). A PP3 is required for battery operation (not included) or you can run from a DC supply.
Soldering is required to complete this kit. Surface-mounts will be pre-soldered so you will only need to fit the through-hole components. The boards you will receive are white with black print as pictured.
So... here is the low-down on what your ARPIE can do:
- Arpeggio modes: Up, Down, Pendulum, Random Order, Manual Order
- Octave span: 1 – 4 octaves
- Note repeat modes: None, Lowest note, Highest note, 3 forward-1 back, 4 forward-2 back
- Step length: 1 beat thru 1/32 beat including dotted and triplet time steps
- Octave transpose: –3 thru +3 octaves
- Chromatic transpose: –3 thru +12 semitones
- Chord hold mode: on/off
- 16 step pattern editor allows you to apply a rhythmic pattern of mutes/rests over the arpeggio. Interactive control over repeating sequence of mutes which does not have to match the arpeggio length, allowing you to create weird and wonderful rhythmic and melodic effects.
- MIDI receive channel: 1-16 or OMNI mode
- MIDI send channel: 1-16
- MIDI note velocity: 0-127 in 16 increments
- MIDI note gate length: 15 increments up to one step length plus tied-note mode
- MIDI Synch mode: None/Master/Slave (can receive MIDI clock from IN or SYNCH sockets)
- Internal tempo generator for Master/standalone use with controllable bpm and "tap" function
- MIDI panic (all notes off) feature
- MIDI thru on controllers (e.g. Mod wheel, pitch bend) and notes
- Selectable options on MIDI thru functionality
- Switchable "lock" mode to ignore note input on a given ARPIE (useful when controlling multiple ARPIEs)
- Works great with other ARPIES. Cheap enough to use a bank of hardware arpeggiators in a composition or performance setup for hands-on tweaking.
- Performance possible without attached MIDI controller by selecting CMaj/CMin/C7/Cmaj7/Cmin7/Random chord insert and using transpose features to change to another root note
- Minimal, but easy-to-use control surface is based on 16 data LEDS, 16 data buttons, 13 command buttons
- Three standard 5-pin DIN sockets for MIDI IN, MIDI OUT, SYNC IN. SYNC IN is a second MIDI input which can receive MIDI beat clock messages from an alternate source. It does not support DIN SYNC (i.e. 5 volt pulses) clock input.
- Receive, Transmit, Beat Clock and Chord Hold LEDs on control surface, plus firmware diagnostic/power LEDs on main board.
- Integral 9V PP3 battery holder and 9V DC socket (2.1mm). The latest PCB (Rev 3) contains a diode bridge, allowing either polarity of DC supply to be used. Previous PCB revisions need centre-positive plug.
- Latest PCB (Rev 3) contains a new "hack header" - An easily accessible 6 pin female connector breaks out 5V, GND, three analog input/digital IO pins and one PWM output/digital IO pin. Makes it even easier to hack your ARPIE.
- Small size (98mm x 87mm x 35mm approx dimensions) and light weight (approx 125g without battery)
View the user guide here: https://github.com/hotchk155/arpie/blob/master/docs/arpie.pdf?raw=true
View the quick reference sheet here: https://github.com/hotchk155/arpie/blob/master/docs/quick%20ref.pdf?raw=true
The basic ARPIE device is a minimal bare-bones design, however it is designed to be easy to customise, reprogram and expand. ARPIE utilises Arduino compatible open-source firmware and an openly documented hardware design.
PLEASE NOTE: ARPIE is a MIDI Arpeggiator and requires separate synthesizer software or hardware to be connected to it to make sound. It does not make any sound by itself!
March 2, 2014, 7:17 p.m.
Hi, this thing is great. It was very easy to build - your instructions and photos made everything clear. I have one question. There are a couple of things I'd like to tweak. I've had a fair amount of experience programming an Arduino Mega 2560 and I have a 6 pin FTDI cable. If I plug the connector into the serial port with the black wire oriented to the "1" printed on the PCB, can I just load up your Arduino software and communicate with the Arpie similarly to an Arduino? I just want to make sure there's nothing in particular I have to be cautious of before I starting uploading to it. Darren
March 3, 2014, 12:41 a.m.
Hi - Thanks for your questions!
On the FTDI connector pin 1 is RESET. The full pin assignment from the Arpie side is RESET-TX-RX-5V (not connected)-CTS(tied to GND)-GND so if black wire is GND it should be pin 6.
Two things: 1) you need to have power from battery or DC connector during programming and power switch must be on 2) If you left off capacitor C9 you will need to press the RESET button as the Arduino environment status starts switches to "Uploading".
The board behaves like Arduino type "Duemilanova w/Atmega328" you need to select this in the Board Type menu.
There are also some useful docs here:
https://github.com/hotchk155/arpie/wiki/Diagnostics-and-Troubleshooting see "Cannot upload new firmware"
Feb. 24, 2014, 1:03 p.m.
Is posible to set a split point on the notes sended to arpie? for example if I want to play a bass line with the lowest notes arpeggiated and a melody in the higher notes of the control keyboard. Or, Is possible to program it for this function? Thank you very much and congratulations! looks really nice
Feb. 24, 2014, 1:21 p.m.
Hi, Thanks for your question.
Unfortunately this mode is not supported directly by Arpie at the moment. I think it could be supported with additional firmware coding and I will keep it in mind for future updates.
Also, some MIDI controller keyboards might be able to split keyboard ranges into different MIDI channels - in which case you could arpeggiate one channel and pass through the others, but I have not tried this myself.
Hope that helps!
Feb. 15, 2014, 11:28 p.m.
This looks like one cool device! I'm wondering though, it is rather tiny (which can be a good selling point I'll admit), if one wanted to put it in a box with a larger front panel, is it basically "just" a question of replacing the top board? I.e. does the top board just hold the LEDs and buttons (and labelling!), or is the a CPU or other electronics (apart from pullups and diodes which I'd assume would be needed for the scan matrix) on the board too? What I was thinking of was building a front panel straight in a box, then wiring it up with a connector which mates with the 0.1" header which appears to be the connector to the top board.
Feb. 17, 2014, 12:24 p.m.
Thankyou for your question.. The top and bottom board connect with a 20 way 0.1" DIL header but there is space on the bottom board for an IDC box socket in place of the female connector so you can ribbon up an alternative control surface.
The slight complication is that a pair of 74HC595 shift register chips are needed on the top board, however it is pretty easy to build up the control surface on stripboard (I did this for my original prototype) or custom PCB so you can make a larger control panel. Check out the schematic here
The pinout of the connector on the base board is indicated on the PCB. Photo here https://github.com/hotchk155/arpie/blob/master/docs/images/B324.JPG?raw=true
If you do make a custom control surface please share photos and I will feature them on the Arpie wiki!
Feb. 15, 2014, 9:25 a.m.
Just a couple of questions: 1) If I sync the device with external clock and connect midi out of my synth to midi in of arpie and then a midi out of arpie to midi in of the synth will there be any latency ? 2) Do you ship to Russian Federation ?
Feb. 15, 2014, 10:23 a.m.
Thanks for your questions:
1) There is always a finite latency with Arpie since MIDI-thru is "soft" implemented in firmware, however the latency is usually small and not noticeable. The actual timing will depend on how busy the device is and I can't give specific figures, but I have not had complaints about latency or noticed it myself.
2) Yes I ship to Russian Federation and have done so for previous customers
Feb. 10, 2014, 7:21 a.m.
Hi, Is there a way to switch the device on and off in order to choose from playing the synth normally or with the arpeggiator ? The arpeggiator would be plugged between an external keyboard (Keith McMillen 12 steps) and a microbrute
Feb. 13, 2014, 1:05 a.m.
Thanks for your question. Yes you can do this, but unfortunately there is not a quick switchover to do this.
Bypass mode is possible to achieve but currently it is via 2 settings... you have to set it up to "pass MIDI notes on input channel" then put it in "MIDI lock" mode by pressing the HOLD button for a couple of seconds. Alternatively you can change the Arpie's input channel to a dummy channel while you want it to ignore and pass through your notes. The second approach is probably better as it avoids input notes going to the output while an arpeggio is playing (which can sound messy on a monophonic voice).
Dec. 11, 2013, 5:30 a.m.
First off, this thing is fantastic. So much fun to play, and even though the UI is minimal, it is pretty intuitive. Some options do require the handy sheet you provided but overall, very easy. Also, I love blinky things! The blue lights are rather attractive. Overall excellent piece of hardware. A few questions\recommendations for future firmware: Can the chord\note max be increased to 16 from the current 12? Any other sequencer type functions would also be great. Could you add an option to send the MIDI clock beat on a separate channel from the notes? Or send a duplicate clock beat on a separate channel? Possibly even enable sending the clock beat on a separate channel and on the MIDI synch port. I'd like to have the Arpie arpeggiate one synth and send just the master clock to another (so I can run its built-in arpeggiator in time).
Dec. 11, 2013, 6:09 a.m.
Thanks very much for your nice comments! let me look at the chord size limit - I thought 12 would be OK as and you can extend an arpeggio over multiple octaves with the SPAN option, however I guess 16 note chords wouldn't be too hard to support.
As for the MIDI clock - the clock is not on a "channel" as such in MIDI - its common to all 16 channels. However your example of synching the arpie with an arpeggiator on a synth can work anyway - arpie can send its MIDI clock to its MIDI output, which could be split between the synth being arpeggiated and another one (which must not play the notes on arpie's send channel).
Alternatively if your synth with built in arp can send MIDI clock itself, you can synch the arpie up to that via the ext synch port.
Another solution is my midi clock hub device which can generate a common clock which both the arpie and the other synth can slave to.
hope that helps!
Nov. 19, 2013, 7:40 a.m.
I RECENTLY BOUGTH THE ARPIE (ARRIVED TODAY !) YOU CLAIM THAT = An arpeggiator it is a device which takes chords (From a MIDI keyboard, for example) and converts them into rapid sequences of notes. ARPIE HAS A = Chord hold mode: on/off but WHEN I OPENED THE BOX , WHY DOES IT SAYS ITS ''MONOPHONIC arpeggiator '' ????????????????????????????????????? YOU KNOW WHAT I MEAN...... COME ON please tell me i will be able to make chords on this stuff... that reason i bought it for.. (juno 106)
Nov. 19, 2013, 8:54 a.m.
Panic ye not... yes it is a monophonic arpeggiator which means (at least the way I define it...) it takes Chords In and sends single Notes out.
The notes it puts out are sequenced from the chords you play into it... I think that is what you expect right?
The "monophonic" description just means the Arpie does not SEND chords out - only sequences of single notes - you can play its output happily on a monosynth
You can play chords into it (or it would not be an arpeggiator :) Hope that helps
Nov. 13, 2013, 3:20 p.m.
Hi, I have a Moog Voyager XL and it does not have an arpeggiator... Would Arpie work with it? Thanks, Scott
Nov. 18, 2013, 1:23 p.m.
Checking the specs on the XL I believe it has a standard MIDI IN which can trigger the synth engine, so I think it should work fine with notes sent from the ARPIE output (e.g. when played via another controller keyboard)
If your question is whether the ARPIE can add an arp to the XL for chords played on the XL's own keyboard, this would need the XL's MIDI OUT to be able to send out notes played on the keyboard without the synth playing them - then have the synth play notes coming on MIDI IN. If the XL can do this (and unfortunately I don't know) you could put the ARPIE between XL's MIDI OUT and MIDI IN to give you the equivalent on an onboard arp. In this setup you could also configure the ARPIE in a passthru mode to play the synth normally.
I hope that helps
Oct. 27, 2013, 2:50 p.m.
Hi! i bought an arpie, still have to build it actually. i was wondering what could be the best way to build a case for it and get the exact positions for the knobs. i bet i should get a transparent case and mark all the positions before soldering all together?! is there something like a 1:1 layout i can print out and use as a scheme for drilling the case? since the switches are microswitches, the distances have to be pretty exact, i m worried i cant build it precise enough.. maybe you got some hints, experiences and feedback from users. thanks anyway, best, chris
Nov. 18, 2013, 1:15 p.m.
Hello Chris - sorry for the slow response (missed the question :\). The best way to get a template for switch positioning is to use EAGLE. The PCB design files are available on GitHub. There is also a render of the control panel there. Let me think if there is a better way to to provide just a template (the main thing is making sure it consistently prints at the correct dot pitch).
I have not actually made a case myself, and I would think that you may need replacement switches with a longer actuator that can potrude through holes in a top panel (or maybe you could cut a panel right around the switch body and fit it lower..?). My guess is that laser cutting would be the best bet for shaping it.
Another idea could be to build a larger, replacement control panel using stripboard and connect it via an IDC cable to the mainboard. My very first ARPIE-like arpeggiator was made like this http://www.youtube.com/watch?v=0zILPekRcp0
Oct. 26, 2013, 3:06 p.m.
Hey, just got my arpie up and running. Overall I'm very pleased and impressed with its functionality. Excellent work. I am, however, having a small issue with it. When the arpie is set to an external clock, it receives and passes start messages just fine, no problem. It doesn't seem to respond or pass stop messages. Is this intentional? Am I missing something? If this is how it's programmed, what steps would it take to reprogram it to implement this functionality? Appreciate all your help. Thanks.
Oct. 27, 2013, 8:41 a.m.
Hi - Thanks for your question. At the moment the external clock handling will not react to STOP message if the TICK messages continue. However I think this can be changed with a firmware tweak: the PIC microcontroller that manages the external synch port does provided a "running" signal as well as "start" and "continue" pulses, so when "running" signal stops the ARPIE could send a STOP message and stop the playback. Please can you drop me an email: goarpie at gmail.com and we can talk some more and I can provide you with an update to try - it does sound like this scenario should be supported
Oct. 14, 2013, 1:07 p.m.
Hallo, i am now on vacation now but soon i'll try to do some programming my self! but i really hope i can add any kind of sequencer set up to the devise! notes, envelope or filters sequenced control would be really great and very A useful feature. or even having an the arpie arpegiate the filter or the envelope, while one is playing the notes can be alot of fun. slimier features can be found on the "volca keys"! being able to do that with any synth of choice would be unique! if a simple sequencer code can be included in the next firmware, that would make easier to rewrite or personalize the code! i was wondering if its also possible to add memory slots. having a couple would be open up musical possibilities for playing live music! one could change the pre-set depending on the parts of the song. thanks again cheers hasan
Nov. 18, 2013, 1:06 p.m.
Hi - there are some great ideas here - I love the idea of arpeggiating MIDI controller values that could be assigned to a filter cutoff etc. on a synth. Currently this is not supported in the stock firmware, but the firmware is open source and the device reprogrammable using the Arduino IDE and a USB programmer. I will keep these ideas in mind for future firmware updates. Thanks!
Currently memory slots are not supported although the EEPROM of the MCU is not being used, so there is some scope to add a memory with a firmware change.
Oct. 10, 2013, 1:17 p.m.
Just got my LE STRUM kit last night, put it together and was instantly blown away. Amazing device, quality components, great instructions. Thanks so much for making these products available to us less technical folk. I plan to get an Arpie next, but I have a couple of questions about it. First, is it capable of a bypass mode? I may want to turn the arpeggio off but still be able to play notes manually without reconfiguring my setup. Also, does Arpie pass through midi data on channels other than its active channel? Like if I connect my LE STRUM to Arpie set to channel 2, will it still pass the strummed notes to the next device even though it wouldn't be arpeggiating them? Hope that makes sense. Thanks for your assistance.
Oct. 11, 2013, 2:08 a.m.
Thanks for your nice comments and feedback. let me answer the easy question first.... Arpie can pass through MIDI information on channels other than the one its "listening to" provided that you give it a specific input channel (not OMNI mode)... As for a bypass mode it is possible to achieve this but currently it is via 2 settings... you have to set it up to "pass MIDI notes on input channel" then put it in "MIDI lock" mode by pressing the HOLD button for a couple of seconds. Alternatively you can change the Arpie's input channel to a dummy channel while you want it to ignore and pass through your notes. The second approach is probably better as it avoids input notes going to the output while an arpeggio is playing (which can sound messy on a monophonic voice). Hope that answers/Jason
Oct. 10, 2013, 5:47 a.m.
Hallo, I already have three of your masterpieces (including this one). I only use analogue equipment, and having a separate midi-in for clock and for receive was a great idea! i have had the most fun with arpie, using it as a 5 step sequencer! i was wonder how difficult would it be to use arpie as a sequencer (16 steps/32 steps)? i would also like to know how to update and change the firmware. as musician, i would really like to learn how to do that. i am hoping to program some chords. or other functions to control the filter etc... thank you for the great work!
Oct. 11, 2013, 1:32 a.m.
Thankyou for your nice comments! Technically you could adapt the Arpie firmware (or replace it) to make a sequencer - although you might need to think hard about how you'd want the control surface to work. To work with firmware mods/replacement you need to work with the free Arduino development environment, and you need a serial programmer (FTDI USB-TTL 5V lead or similar - I sell something suitable on Tindie). The Arpie code is C++ (Arduino) and you can download source code on Github. As long as you can get on with the coding you can reprogram an Arpie as many times as you like. I also have a new firmware version in the works that you can download on github to try out. Finally - let me know if you have specific suggestions for new features
Oct. 7, 2013, 9:54 p.m.
Out of interest how does it compare feature/function-wise with a MAM Map1 or Oberheim Cyclone, both examples of the "dedicated hardware arpeggiator... that might set you back a few hundred dollars" you reference on your description page? Thanks
Oct. 8, 2013, 2:13 p.m.
Thanks for your question. Unfortunately I don't have experience of either of those, but the features of the Arpie kit are listed on the product page. The main limitations are that it only supports a single arpeggio at a time and is entirely monophonic. The closest comparison is the RPG-8 module in Reason, with which it shares the play/rest pattern sequencer. I am working on some additional features for a new firmware release, including force-to-scale, a chord gating mode, ability to store and play back a sequence of pattern transpostitions and some more interesting random play modes. Hope that helps/Jason
Sept. 24, 2013, 1:30 p.m.
Hi, i'm interrested in your arpegiator. i'm looking for one to control my minibrute, to create more complex arp paterns, would it work? how do i connect that apegiator to my minibrute? thanks florian
Sept. 25, 2013, 4:30 a.m.
I believe the minibrute can accept notes via MIDI IN, so yes it would be possible to control it with an Arpie connected to a MIDI controller keyboard.
I am not sure if minibrute can be configured to send MIDI output from its keyboard without that going to its synth engine. If so you *might* be able to put an Arpie between the MIDI IN and MIDI OUT of the minibrute and avoid the need for another controller keyboard. I don't have a minibrute to try that out with, but it may be possible
Hope that helps
Sept. 22, 2013, 6:35 p.m.
Can I use Female headers soldered to the top board to attach to the male headers on the bottom board to avoid having to desolder just to get at the bottom board?
Sept. 23, 2013, 4:56 a.m.
Hi - you don't need to desolder anything to separate the boards on an Arpie. The kit comes with a female header strip to match the long pin header, so once assembled you just need to remove the top screws and pull the connectors apart (for example to change the battery)
Hope that helps
July 22, 2013, midnight
Hi I ordered the arpie on the 9th of july and still not here yet its the 22nd of july I am in usa should my arpie be here by now? thanks ....----scott
July 22, 2013, midnight
Thanks for your question. Yes, according to Royal Mails estimates you should have received it at the end of last week. However I have been seeing a lot of delayed orders, including 3 weeks for delivery within Europe (where it should be 5 working days max). I can assure you it was mailed out on the 9th, so I can only ask that you wait a bit longer. Please let me know when it arrives/get back in touch if it has not arrived within another week. Sorry for the inconvenience and thankyou for your patience
July 7, 2013, midnight
Hi Jason. I've bought Arpie (It has been just shipped and I am wainting for it). I would like to know if it is possibile to modifiy hardware (2ns board with LEDS), transforming ADC output used for LEDs in order to have 2 or 3 pots to use as hw surface control (for example filter modulation, filter cutoff and filter reso). I was looking the schematic and it seems easy to modify the upper board but I would be sure that this hack is compatible with Arpie functions. I'd like also to use Arpie as gate control, that to say use 16 swith to turn on/off trigger gates inside the loop and to play a chord with its notes gated. It would be useful also to register a keyboard split, in order to have gate effect only on a specific part.
July 7, 2013, midnight
Hi, Thanks for your ideas.. some really interesting stuff there. The chord gate part could be done with enhancements to firmware. Adding extra pots to the control surface would need some extra wiring - there is already an unused ADC pin routed thru the 20 way connector (UN1 = Analog input A0) and analog inputs A4 and A5 are unconnected on the base board. You could wire pots to UN1 header and ATMega pins 27,28. to add 3 pots. These mods would need firmware changes to read them, but should not interfere with other i/o.
Drop me an email goarpieXgmail.com X=@
June 28, 2013, midnight
Hi Jason, I'd very much like to purchase an Arpie, but can't seem to figure out from where it ships. The price is in dollars, but you are located in GB. My hopes are that it is within the EU. Am I that fortunate? The product looks absoltely great and just the thing I'm looking for. cheers Rack - Copenhagen, Denmark
June 28, 2013, midnight
yes I am in Brighton, UK and shipping to Denmark is not a problem. Tindie is a USA site and all prices are in USD but you can pay in any currency you like ;-)
To get a price quote put the item in your basket and go to the checkout, you'll get a full price with postage before you commit to anything.
June 13, 2013, midnight
Hi Jason! Thanks so much for the Arpie kit - everything is PERFECT! Thank you! I just wanted to share a little hack I did but for some reason Tindie seems to have taken away the message option :( http://www.muffwiggler.com/forum/viewtopic.php?p=1202016#1202016 I used the Clock LED to add an output jack that sends out the clock to my Eurorack modular! The voltage needs to be amplified a little but it works excellently :) Thanks again for this GREAT kit - bring on the next project!!! Dave
June 14, 2013, midnight
Thats awesome!! Thanks Dave. I will start a little "user hacks" page on the Github wiki for ARPIE and add your description to it. Cheers, Jason
Edit: Heres the page https://github.com/hotchk155/arpie/wiki/Clock-Output-Mod
May 31, 2013, midnight
Hi Mr Hotchkiss, and thanX for that ARPIE ! Great fun to build and to play with. I just now read the manual again to find out that there should be 5 octaves span. I just rechecked, but mine shows 4 led dimmed, first bright, when starting, so 4 to chose. All LED's work well besides/otherwise. Is this right ? many greetz Simon
May 31, 2013, midnight
Thanks for the nice comments!
The octave span is 1-4 octaves but I have a feeling when I did the preliminary manual it said 5, which was a typo. Have you got the latest manual? let me know if you still think something is not right there and sorry for confusion
May 30, 2013, midnight
Hey, just wanted to say thank you for designing this and making it available! it is a great instrument. putting it together was fun and made easier by your excellent instructions which came in handy even for a seasoned builder (particularly on getting those blue LEDs straight!). i like the way the sequence of notes doesn't reset after the 16 steps, so depending on how many notes are held down it can take a few cycles before you hear the same thing twice. it's just uncanny how i was looking for something like this and came across your fundraiser, great timing! many thanks again!!
May 31, 2013, midnight
Thankyou very much for the feedback :)
May 25, 2013, midnight
Not a question - just feedback. A truly great product! Built mine in about 3 hours yesterday using the extremely idiot-proof instructions at https://github.com/hotchk155/arpie/wiki, and it worked first time with no issues at all. Since then, been having terrific fun with it, trying it with different synths and devices. A mighty big well done and thank you, Mr Hotchkiss.
May 26, 2013, midnight
Thankyou for the nice comments! It's great to get feedback and to know people are having fun with them. Feel free to add a review. Cheers/Jason
May 12, 2013, midnight
Can we still order this ?
May 12, 2013, midnight
Absolutely! There is a bit of a delay as I clear the backlog of fundraiser orders but should done by end of this week
May 4, 2013, midnight
ERRATA: The instructions say the 100nF capacitors should have a 105 code, but the capacitors in the kit show 104 code
May 4, 2013, midnight
This was a typo in the instructions. The included capacitors are correct - 104 is the correct code for a 100nF cap. Sorry for any confusion!
April 1, 2013, midnight
Hi again! Sorry, but I've a new question about the connection ARPIE / Korg MS20 Mini. I'd like to know if I connect the ARPIE via MIDI IN into the Korg, I play a selected arppegio of the ARPIE, and before I play any key of the synth: the Korg will send through the "Amplifier Out" the arppegiated signal into the amp, and it would sound the arppegiated note directly through the amp? Jose Ignacio Alonso.
April 1, 2013, midnight
I am not able to try it out with the MS20 mini but I believe ARPIE can play it just like an external sequencer. This would usually mean that an external device (ARPIE or another MIDI sequencer) plays notes just like if you were playing them on the MS20 mini's own keyboard. I got this information from the MS20 mini specifications and I have not been able to try this myself with an MS20 mini - however this is the standard way that a MIDI input works and I am pretty sure the MS20mini works the same way
I hope that helps
March 27, 2013, midnight
Instead of running off of a 9v battery would it be possible to run off a power supply? Like a godlyke or other pedal power supply.
March 27, 2013, midnight
Absolutely - there is a 2.1mm 9V DC centre-positive socket on the PCB. The on-board voltage regulator should handle voltages up to 30V or so - so anything from 8V to 30V DC should work fine
March 26, 2013, midnight
Hi! Great device! I'm going to purchase a new Korg MS20 Mini, and I'd like to connect an arpeggiator to this synth. Will the ARPIE work into the Korg through its MIDI connection? Regards from Bilbao and sorry for my english! Jose Ignacio Alonso
March 27, 2013, midnight
That MS20 mini looks amazing! I'd not seen it before but now I want one :)
Korg's web site says "The MS-20 mini provides a MIDI IN jack for receiving note messages... You can connect the MS20 mini to your computer and play it from a sequencer." so as I read this - YES, the ARPIE should be compatible, since it is only sending standard MIDI note messages.
Thanks for your question
March 25, 2013, midnight
Hi, This looks GREAT - I have two quick questions please. I've been lookin for a way to generate random sequences for my x0xb0x and Basstation. Woul the Arpie be able to do this standalone? Second, will there be a case for it in the future? Thanks for your time - this looks GREAT! Dave Oh! P.S. would their be any possibility of adding a clock out for Eurorack or is it too late at this stage?
March 25, 2013, midnight
Cheers for your comments - yes this does have a function to generate fixed or random chords for arpeggiation without a keyboard. You can use the controls to transpose the sequence and add rhythmic patterns of rests (a la Reason RPG8) so you can have a lot of fun without a keyboard hooked up. If you know any Arduino stuff you can also reprogram it to do pretty much anything.
Also it can output a MIDI beat clock on the MIDI output (and you could split that) but has not dedicated clock out. Not sure if that would do what you need? Since it -does- have a dedicated MIDI SYNCH in port it may be best to synch the arp to other equipment rather than the other way round. Depends what you are trying to do
At this time I am not planning to provide a case but I might give it some thought if there is a demand.
March 25, 2013, midnight
I've always needed a hardware arpeggiator and since the ARPIE's price is so reasonable, I might be getting two or three of them and run them in parallel. My question would be: Is there a way to connect internally several ARPIES so that they share the same input notes and the same clock? This would spare me the need of an external MIDI thru box. Thank you for your efforts, this device is awesome indeed. Jorx
March 25, 2013, midnight
In the current design there is no way to connect the devices together in any way except via MIDI. However I do sell another kit on Tindie which could be of use here. My MIDIhub++ kit can generate a central MIDI clock and thru a single MIDI note input to 6 outputs, and is also pretty cheap
I built my Arpie in one night and it's the first major soldering kit I've built without someone helping me. The components were extremely well-organized with everything carefully divided and clearly labelled. The tips and tricks throughout the instructions, like how to get the LEDs flush with the board, were extremely useful.
Everything went smoothly until I burne out a trace running down from the primary blue LEDs, though. At first I thought I burned out the LED itself and spent a long time trying to remove it (and then clearing the hole I had filled :( ...), but adding a bridge wire between the two terminals fixed the problem. I had to do this twice. So when making the UI board be careful and solder quick!
And of course the software is on github making this really a dream tool for music hackers. Highly highly recommended
Feb. 11, 2014
The Arpie kit was my first electronic soldering and i´m very happy about the easyness and the result.
Thanks a lot, fantastic work.
Just a few ideas of future developments of the Kit: CV-outports, integrated USB, easier updating of the programs, different sequences for different midi channels.
Jan. 13, 2014
I bought an Arpie a little while back, and I'm really digging it. It's surprisingly easy to use and seem fully featured. I still need the reference sheet to remember which button takes me to which parameter, but I'll memorize all that eventually. Flexible enough that I can reconfigure on the fly, and since it's external I can drive a bunch of synths at once. A lot to like.
I'm slightly concerned that the open frame will be less than ideal for gigging, but I think it'll be safe stuck down in my pedal board case.
All in all, I'm a fan.
Jan. 7, 2014
I bought the ARPIE and that it is very comfortable and fun to build it, it is a fantastic tool to have in the studio. I consider the arp in reason as one of the best (to use) in software form and ARPIE is just that in hardware. once you get comfortable with the leds its just so much fun playing with it. however i wanted to use it in a live environment, there is basically no hardware alternative to this item. the problem is to build a case around but in fact its not a huge problem, you just have to be a little bit creative. i missed that point and used the parts that were delivered but you should think about how you want to put that gear in a case _before_ you solder. i would have definitely soldered micro switches with longer press buttons to let them stick out of the case. if you have a lasercutter at hand you can get the 1:1 EAGLE pcb design on github.
anyway, this gear is a big bang for the bucks and jason is a great guy.
Nov. 19, 2013
Really happy with the functionality and ease of use of the ARPIE. a must for people looking to get an "out of the box" sound with soft synths. make it work like a simple sequencer on drums or percussion too. easy to build and good looking boards.
July 31, 2013
I'm just impressed by this device. Apart of how well documented and easy to build it is, you get a very useful piece of equipment for any professional musician.
This is the arpeggiator you are missing in your synths.
Lots of fun!
I'm ordering another unit.
July 24, 2013
Rates to United States
|Shipping Rate||First item||Additional items|
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