[Midibox Konvolut]

Hi Forum Community,

 

a small heads-up to me seeling Midibox Stuff (Core board, DIOmatrix and stuff):

 

https://www.ebay-kleinanzeigen.de/s-anzeige/midibox-konvolut-diy-midi/2342845829-282-8212

 

 

Cheers

 

FFW

[Midibox SEQ V4]

Hi Forum, 

 

i am selling a finished SEQ V4 project. The only diy that is left for you is some holes for the pcbs and connections on the backplate. The "final" assembly, so to say. 

This one has the very expensive and rare Heidenreich case. 

The Sequencer itself is up and running, everything works just fine.

Here are some pics:

 

Here are some pictures:

 

[SEQ V4 (V1) CS-pcb trouble]

Hi Forum, 

 

i have built an old Wilba CS pcb. After finishing i connected it to the wrong port on the stm32f4 core pcb (J4A) instead of J10A. 

Then, after recognizing my error, the Seq wont start up - showing flickering (very dim) displays.

Disconnecting the CS pcb was needed for the Seq app to start. As soon as i reconnected the CS, the app crashed again, with dimly lit flickering displays. 

I then (one after another) changed !all ICs and, after the error was still there, !all resistor networks. 

Now the error is still there. It feels like there could be some shortcut somewhere.

But i triple triple triple checked everything. That could not be the issue, really. 

Now i suspect, connecting to the wrong port, i may have fried an IC cap somewhere. 

 

But i really want to hear some expert opinion on this, before i begin changing them as well. 

 

Hope you can spend a bit of your time and give some thoughts. 

Below are some pcb pics as well. 

Thank you very much for looking at it. 

 

Best, 

FFW

 

[!Sold! [FS/D] (backup/unused) SEQ V4 with TPD]

Hi Forum,

 

this is my last SeqV4 which was hoping to be used sometime.

Now that never happened, its always something else that occupies my time.

So now this unique build will find a new home.

The Sequencer is build with all around quality and DIY love.

Its very rugged, even though its open frame is not looking like thats the case.

The panel and the back is made out of 3mm acrylic - colour is "mandarin orange" and it really somehow looks sweet and tasty.

It has Optrex Displays - great refresh rates, great viewing angle.

On the left side there is a TPD pcb and a Neutrik USB Jack.

The backside has 4 Midi IN and 4 Midi Out.

The encoders have steel axis and eloxated Aluminium knobs. They have a great feeling to them.

Details like the Orange Titan Panel screws along with custom made buttons out of the the same mandarin orange acrylic  add up to an overall impression of love for details and fun building it the best way possible.

!SOLD!

Ah, the thing is just used a few times, could say unused.

Here are some pictures:

[[FS/EU:D] Seq V4 - Premium Build NEW]

hey forum,

the thing is sold. thank you all for looking at it :-)

 

best,

=FFW=>>

[[FS/EU:D] Seq V4 - Premium Build NEW]

22 hours ago, EsotericLabs said:

Thank you for the link and the extra pix! If I may ask about the USB connectors, the regular USB connector (the seq as client to a host computer)  will have the more or less square type B plug.  The USB host side (SEQ as host for other devices)  will have an USB OTG cable internally to a flat type A outside connector.  Am i correct?

 

yes - excactly :-)

[[FS/EU:D] Seq V4 - Premium Build NEW]

17 hours ago, EsotericLabs said:

I see.  Are they from Reichelt or Mouser?  If you'd share the part numbers, I would be much obliged. 

And there is a Quad midi out involved I assume.  Can we see the back panel design?

Thanks for sharing the pix, great inspiration to improve mine.

hey EsotericLabs,

i got them from reichelt.

here is a link:

https://www.reichelt.de/Flanschbuchsen-stecker/NEUTRIK-NAUSB/3/index.html?ACTION=3&LA=446&ARTICLE=63200&GROUPID=7532&artnr=NEUTRIK+NAUSB&SEARCH=neutrik%2Busb

the additional outs are obtained with a QuadIIC :-) - yes.

i have attached a few more pictures, showing the unit in working state as well as the back panel.

if any questions arise, im here.

cheers

[[FS/EU:D] Seq V4 - Premium Build NEW]

hey esoteric - yes, thats host/client. one bus is for power / one gives host functionality

[[FS/EU:D] Seq V4 - Premium Build NEW]

Hi Forum,

 

i have build a premium SEQ V4.

This SEQ was build because of fun and love building it.

It has never been used.

Everything about is is as good as it gets:

- Amaranth wood / finesse woodwork with high precision and great feeling

- All parts are top quality (Neutrik Jacks and all that)

- It has 8x MidiOUT / 4x MidiIN

- Is capable of midi-Host functionality (thanks to Thorsten!) and is wired to use this functionality

- redesigned Frontplate (button functionalities) and accordingly configured run scripts

- eloxated aluminium encoder caps

- military grade encoders with steel axis

- different couloured LEDs for certain functions (Parameter Layers / Track Layers)

- perfect OPTREX white on black Displays (sadly they are not available anymore, but thankfully i got a few of them while they were still available...)

 

This one is a tough sell for me as i did not want to ever let it go and use it when the time would be right.

But now, for some personal circumstances, i need to let it go.

So if you ever wanted to have a top notch build with a unique character - heres your chance to get it.

Im looking for 950.- Euros

 

(if you have any questions, just drop me a line)

 

To get an impression of the SEQ, look at the pictures:

 

 

[FS[EU] LPC17 Board / LRE8x2 Boards and more]

hi forum,

im selling some stuff:

- two lre 8x2 boards - assembled (35.- euro each)

- LPC1769 board (35.-euro )

- stm32f4 board (35.-euro )

- midi IO boards (20.- euro each)

- DIO matrix boards (20.- euro each)

 

all boards are assembled and working.

 

cheers

 

i forgot - a yamaha rx11 (single outs, new battery, all switches revised, cleaned and silicone-sealed), forum-price: 55.- euro

 

[FS[EU] SeqV4 with BLM and TPD]

as of now, the unit is sold!

thank you for the flowers :-)

[FS[EU] SeqV4 with BLM and TPD]

Hi Forum,

im selling a premium build SeqV4.

The unit features:

 

- a TPD module (by ilmenator)

- a BLM 16x4 module (by ilmenator)

- the new STM32F4 core

- core Midi I/O

- QUADIIC Midi-Out

- professional made Amaranth-wood case

- handmade Buttons on the frontpanel

- eloxated brushed aluminium knobs

- all components used are carefully selected (Neutrik USB-connector / Omron Switches / Full-Body aluminium encoders...)

 

there is still room left in the case and there are 3,5mm jacks on the backplate if one wants to add an AOUT_NG in the future.

The unit is working flawlessly and overall a joy to use, not at least because Thorsten, Ilmenator and this great community

made it possible.

Pictures of the thing are attached.

It has to be mentioned that the display which are in there at the moment are not very good.

I recommend getting better displays for it.

If you want to modify / change  the frontpanel / backpanel, i will provide the respective .eps files.

Im looking for 850.- euros which would be a fair counterbalance to material costs.

 

 

[Presonus Studiolive 16.4.2]

hi forum,

as now and for some time to come "time is an issue" here,

i am letting go a bunch of things.

this time its a presonus studiolive 16.4.2 board.

the unit is in great shape and works flawlessly.

im looking for 770.- euro

 

interested? --> pm :-)

[Assembled AOUT_NG Module]

the board is sold!

[Assembled LPC17 Board]

the board is sold!

[Assembled LPC17 Board]

Hi Forum,

selling an assembled LPC1769 board.

looking for 35.- Euro

 

cheers

[Assembled AOUT_NG Module]

Hi Forum,

selling an (fully/bipolar) assembled/tested AOUT_NG module.

along with an voltage regulator (5v(usb)->12v).

looking for 50.- euros

 

have a nice time during xmas!

cheers

 

[Optrex LCD on STM32F4 core]

this is a very elaborated and understandable answer. thank you.

now i think i will accept the way it looks for now. at least, its readable

it looks quite similar to yours around the outer right part of the right display in your picture.

 

[Optrex LCD on STM32F4 core]

hey cj55,

thank you very much for the effort to make it clear with these pictures.

great build. great wiring. respect!

i have attached the resistor the same way you did it.

have you read about the altitudes way of connecting the optrex displays?

he was using the green on black optrex displays with his way of improving the contrast of the displays.

i soldered a 30 ohm resistor in there and ask myself if the resistor in there relates to brightness or to contrast -

because i feel that the contrast should be a bit better.

so what do you recommend? is this resistor related to contrast? would a 25 ohm resistor improve contrast, or not?

why excactly have you chosen this value?

cheers and thanks!

[Optrex LCD on STM32F4 core]

oh - alright. thank you so much! where did you put the resistor? directly within the connecting cable?

[Optrex LCD on STM32F4 core]

Hi there,

as the title implies i ask myself if there is anything to consider using these LCDs

http://www.mouser.de/Search/ProductDetail.aspx?R=C-51850NFQJ-LW-AANvirtualkey51610000virtualkey805-51850NFQJLWAAN

with the new STM32F4 core.

 

Cheers and thanks

[BLM 16x16+X PCB and case order [CLOSED/waitlist]]

Waitlist        PCB BLM   PCB miniCore   Case   Shift button   M2 hardware   4xLED
 
latigid on      1         1              1      1              1             1
audax_axon      1         1              1      ?              ?             1  
ffw             1         1              1      1              1             1 
Total           3         3              3      2              2             3

[Midi Dropouts - QUAD_IIC + STM32F4]

hey latigid,

 

an easy solution to the problem came up. i just shortened the usb-cable the stm32f4 is connected with.

that worked. so the problem is, at my side, gone for now.

still - the stability of the quad_iic board is prone to irregularities within the powersupply.

i did not investigate the excact conditions nor the technical aspects of the power regulation on this board.

 

so, this is for everyone having problems in this regard:

 

- look after power issues when having dropouts using the quad_iic board with the stm32f4 core -

 

and thank you for your help, thorsten and latigid, greatly apprechiated!

 

cheers

[Midi Dropouts - QUAD_IIC + STM32F4]

hey latigid on,

 

thanks for chiming in :-)

and:

 

yes - usb power is used

no, i cant monitor the supply voltage...

 

however, after trial and error checking yesterday

im now sure that it must be a power related issue.

because disconnecting a lcd is (consistently) preventing

dropouts.

im asking myself if the stm32f4 is more prone to power

instabilities than the lpc1769. or if the stm32f4 is using

more power itself?

how to stabilise the power provided by the usb port?

i tried usb hubs / and direct connection to a computer-usb-port.

problem persits - no matter what type of usb port im using.

 

i want to avoid using an external power supply!

 

cheers

[Midi Dropouts - QUAD_IIC + STM32F4]

hey thorsten,

 

the problem can be narrowed down to the stm32f4 core board.

projects that were no problem for the lpc1769 core board

now have serious dropouts on all quad_iic ports.

 

could it maybe be a power related issue?

because theres much pcbs connected (blm (by ilmenator) / tpd (by ilmenator))

which drain much power.

becuase yesterday, by accident, i found that the dropouts vanished when i disconnected

one of the lcd´s (whichever of the two)...

 

thank you for looking into this issue!

 

daniel