VC-touch

Started by sixeight, October 29, 2020, 02:18:35 AM

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sixeight

A while ago I got this TFT touch display from Buydisplay.com. Thought it would be a great candidate for a new type of VController.

https://www.buydisplay.com/spi-1280x400-7-84-ips-tft-lcd-module-with-ra8876-capacitive-touch-panel

After a bit of work I have the display working and I  have created this mockup.



The picture is taken in sunlight, to help the colors of the foto match reality.

The idea is to add two rows of 6 footswitches on either side. Only the function of the middle four of each row will be shown in the display. I haven't decided on the design of the enclosure yet. The processor will be the new Teensy 4.1

What do you guys think. Would this make an interesting foot controller?

gumtown

sure would make a great controller display.  :D
Free "GR-55 FloorBoard" editor software from https://sourceforge.net/projects/grfloorboard/

billbax

Like the look of that, and logged in just to give a like :) :) :)

Brilliant work sixeight!

wespac

 Like this very much!
;D ;D ;D

HAMERMAN409

That sounds very cool!

sixeight

Working on the design.



Now it looks a bit like the Quad Cortex...

whippinpost91850


sixeight

#7
I have designed the first version of the board. This week the prototype boards arrived.



But I am also finalizing the code for the SY1000 scene mode. So I will finish that before I solder up a VC-touch board. I am still waiting for some parts anyway.

sixeight

#8
Well the first board is soldered up and working so far. I did make a mistake on the actual holes for the display. They are a bit too far apart on the board.
In this video I demonstrate the VC-touch controlling a Katana, an SY1000 and a VG99. The colours are a bit off in the video. It is more a progress update than a full fledged video. Just filmed it with my phone.

https://youtu.be/lka95O8Qu18

Still lots of work to be done. I hope to have a full prototype by summer. The enclosure has a number of challenges. The screen is currently quite fragile. Need to look at options here - gorilla glass?

Also trying the new Teensy 4.1 here. It has some advantages and disadvantages compared to the Teensy 3.6. Haven't made up my mind yet which one I will use in the final product.

rsera

Saw the YouTube video  :o. I definetly want to buy this kit when it becomes availible.

philjynx

Always enjoy watching your progress, nice work.

gumtown

Looks really great, thank you for sharing  8)
Free "GR-55 FloorBoard" editor software from https://sourceforge.net/projects/grfloorboard/

Tone Jones


sixeight

My CAD specialist friend made a first version of the enclosure this morning:



It will be made of two lasered pieces of sheet metal. The display bezel and the sides will be 3D printed. And there will be a piece of plexiglass to protect the display. There are some changes that need to be done, but we ran out of time for now.

But it is really looking good. I will do another check on the spacing of the footswitches, as they are quite close now.


sixeight

#14
Decided to redesign the PCB.



New features:
* Switches are further apart
* Added optional WIFI / Bluetooth board (using ESP32 WROOM)
* Added optional i2c 5V port to allow connecting character displays with i2c adapters.
* Added optional second i2c memory chip.
* Fixed the errors on the board.

Tone Jones

#15
Looks great! I soooooo want one of these!

sixeight

New PCB boards have arrived today. Just in time for next week where I have time to develop the VC-touch further.


sixeight

#17
Had some time the last two weeks to further develop the VC-touch. Soldered up one of the boards and tested it. So far it is looking good. Developed a nice on-screen keyboard.



Also tested the bluetooth/MIDI module. This is still a work-in-progress as it currently is struggling with larger MIDI sysex messages. So connecting wirelessly to the editor is not working yet. Also my initial plan was to use the i2c bus to communicate with this module, but the ESP32 module is does not support i2c slave mode. As I have no more spare pins on the Teensy, I decided to lose the small expression pedal jack.  This frees up two pins so I can use a regular UART for communicating with the board. So there are some minor modifications to this board that will be properly implemented in the next batch of boards.



Still lots of work to do. Also the enclosure needs a redesign. But things are moving slowly, because people are on holiday.

I will be away for the next three weeks as well. I will be traveling to Sweden. So after that I will pick up development of the VC-touch again.

gumtown

Looking very nice , well done !!  8)
Free "GR-55 FloorBoard" editor software from https://sourceforge.net/projects/grfloorboard/

CodeSmart

Quote
I will be away for the next three weeks as well. I will be traveling to Sweden. So after that I will pick up development of the VC-touch again.

Have a great vacation Catrinus! Let me know If you happen to pass by my town.
But I got more gear than I need...and I like it!

sixeight

Quote from: CodeSmart on July 23, 2021, 01:15:06 PM
Have a great vacation Catrinus! Let me know If you happen to pass by my town.

Sure will. Plans are not very clear yet. But I will let you know if we pass by..

sixeight

#21


Some more progress on the VC-touch. Really have been working on the graphics. I am now able to use user fonts and I am able to upload graphic images to the display. So the display will show a picture of the device you are controlling.

Still waiting on the enclosure. There has been some development, but my friend who does the design is a busy man.

And there are still some bugs in the firmware. So it still is a work in progress.

gumtown

That is looking very good, far better than many commercial products.
Great work !!  :)
Free "GR-55 FloorBoard" editor software from https://sourceforge.net/projects/grfloorboard/

CodeSmart

Quote from: gumtown on September 06, 2021, 11:55:30 AM
That is looking very good, far better than many commercial products.
Great work !!  :)
Yup that's a really nice display. Way cool!
But I got more gear than I need...and I like it!

philjynx

Quote from: gumtown on September 06, 2021, 11:55:30 AM
That is looking very good, far better than many commercial products.
Great work !!  :)
Yes, far better display than the monochrome murky fish tank displays STILL favoured by one of the big manufacturers that we all know and love