tago

Hi @pilo intresting stuff. It looks like you can print multiple font faces and sizes on the same dispaly. Is this already implemented in MIOS?

The selected waveforms could be displayed as labels via simple graphics or just words like "SINE" or "SQUARE".

It would be very cool to have an onboard solution for mixing display types/sizes. But, my programming skills are not sufficient. If someone with more brain cells left wants to corporate on this topic, please contact me.

The term VCO is a little misleading, it will be midi only. I have some sections like VCOs that will each get their own display and others will use the main/SCS displays via banks like in my previous screenshot. Rough sketch here:

4x OLED acting as one large display, if you press Bank [SCS] the SCS will be activated, otherwise 1-4 Encoders act as bank to edit other sections of the synth. @Psykhaze all my other OLEDs will be placed near other sections of the controller. E. g. each VCO gets one OLED to display its waveform and other relevant parameters.

What i really want is one large 40x2 character display and multiple small 0,96" OLEDs. Do you know a way to convert HD44780 to SSD1306?

@latigid on Thanks, funny stuff. Do you have a photo/video with the actual SCS on it? I'm thinking about an emulated SCS composed of 4x OLED + an encoder under each display and on the right of it two banking buttons (up/down) + 1x exit button. Do you think it will work that way? Whats up with that shift button? Actually i don't want to do it that way, but since i can't mix display types/sizes this is my workaround to get a larger OLED display for the main section of my controller.

@latigid on Do you have something to show yet?

Thank you very much @TK. Will look into your files. Since i don't know much about sequencers, i have to find various concepts to study. Do you think that 8 or 16 cncoders with buttons (tune/note and on/off) would be suficient for a basic sequencer?

A pity, i don't know if i'm good enough at coding. A second Core would require a lot of space also and could be overkill for a little basic sequencer. Maybe i should add a little Teensy? How would you connect the Teensy, via Midi?

I'd like to add a basic sequencer to my synth controller project. Maybe 8 or 16 steps with one button and one encoder per step. Is this possible out of the box?

You mentioned an oscilloscope earlier. Unfortunately i don't own one. What specs will i need? I'm afraid i can only afford an old one. I suppose a high scan frequency will be important. Can you recommend an old scope? What's up with Hameg 203 or cheap China scope (DSO138 or DSO203)?

@Hawkeye Thank you very much for your advice. I'd like to understand one more thing. Should i go with two power supplies in my system? One powering digital stuff and one for analog ins (in my case AINSER64)? Someone on TI forums says: https://e2e.ti.com/support/microcontrollers/msp430/f/166/t/285794 The Teensy for example has AGND and GND. How is this handled with Midibox and how this related to "digital"/"analog" power supplies?

Or the Meanwell PS-05-5 5V/1A http://www.ebay.de/itm/Meanwell-Schaltnetzteile-PS-05-5-5V-1-0A-/251537064348?hash=item3a90c7019c:g:k1sAAMXQ3kNTfINn

Thanks, Peter. Do i have to estimate the expected total current draw? A 60Watts power supply seems a bit high to me. Since i do not plan use it for more than the controller, should i get a smaller power supply? USB2.0 is 5v*0,5A. Do you think 0,5-1A would be sufficient and better suited in my case? Edit: Reichelt has this 5V/3A Meanwell: http://www.reichelt.de/Schaltnetzteile-bis-150-W/SNT-RS-15-5/3/index.html?&ACTION=3&LA=2&ARTICLE=137080&GROUPID=7264&artnr=SNT+RS+15+5 Would you recommend that PS?

Thanks for encouraging me. I need help regarding power supply for my project too. Please take a look here:

Currently i plan to use an AINSER64 (40-50 pots), 8 OLEDs, 8 Encoder, 16 LED Buttons and a 49 key Fatar keybed to scan. I've no idea if it will run smooth.

If i understand @Zam correctly, powering via USB is ruled out, right? That would have been newbie friendlier.

Would this be good enough? http://www.ebay.de/itm/AC-DC-5V-3A-Low-Ripple-EMI-Isolated-Step-down-Switch-Power-Module-Buck-Converter-/291810357129?hash=item43f140af89:g:L6EAAOSwuhhXU5j5 Ripple and noise: <100mV

Sorry, but this has nothing to do with old synth's don't have Midi. I want to build a controller that does look/feel like an old synth, the sound engine will be digital (e. g. vsti).

I'm looking for an appropriate power supply to minimize jitter with pots/faders. @Zam worte in another thread: Can you recommend a ready to use power supply? I'm have no idea how to build one myself. Would i tbe simple to build one myself?

Is there an alternative PIC based AIN board? I fear we're getting too offtopic.

Is the Enabler based on Midibox? Yeah, that's the downside. IMO ok if you don't mind old analog synths. They often have not even presets. But i can imagine a second synth controller wholly based on encoders. Do you see jitter problems with around 50 pots? The AINSER board is ready for 64 inputs, so i assume it should work. I know that multiplexers will not make things easier concernig jitter. Therefor i asked before if i shoud go the AINSER8 route to get better wiring. But it seems you can't have lots of AINSER8 modules. Do you know someone who built a similar midibox, who could be asked about upcoming issues?

Around 40, max. 50 Do you think my idea is idiotic? I mean not building a Programma.

Only partly. My idea is to have a more traditional/analog section with pots and sliders and additionally a universal Encoder/OLED section (e. g. 4x (or 8x) Encoder/OLEDs combinations) plus a SCS for patch selection/system stuff. The analog section would occupy the most space on the frontpanel. So i've three main sections 1. Lots of analog inputs (pots/sliders) with an edit button for each synth section e. g. LFO, OSC.. - maybe with additional OLEDs for each section to show waveforms and other paramters 2. Encoder/OLED combinations (with banking) that show corresponding (sub) parameters of the selected synth section via the edit buttons 3. SCS/System menu, mostly displaying the current patch name, patch selection, patch saving.. I hope it's getting not too offtopic.