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latigid on
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Doing a bit of spring cleaning, maybe these might be of interest. Prices in euro plus shipping

 

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  • Pads WS2812 LEDs and Sparkfun silcone buttons/matrix
  • Availability: 10
  • Price: 8

 

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  • Encs  WS2812 LEDs and illuminated encoders
  • Availability: 10
  • Price: 10 
  • encoders: 1.5 each

 

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  • ELO WS2812 LEDs, illuminated encoders, optional touch sensors, OLED displays mounted at 45 degrees
  • Availability: 13
  • Price: 20 (it's a four-layer board...)
  • encoders: 1.5 each
  • 0.96" white OLED: 5 each 

 

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  • CS1 button matrix, encoders (some illuminated), LCD/OLED mounting 
  • Availability: 8
  • Price: 12

 

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  • DIN6DOUT4 SRIO, works well with Pads, Encs and CS1. Level shifter for 16 outputs (e.g. higher-voltage gates etc.) 
  • Availability:  9
  • Price: 6

 

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  • MiniCore PIC, designed for BLM but could be useful elsewhere
  • Availability: 3
  • Price: 5

 

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  • Disp. driver buffers and CS lines for OLED displays (32 per PCB). Works, but J15 connector is mirrored... 
  • Availability: 8
  • Price: 5 or 2 with any other purchase

 

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  • SCS OLED many configurations possible (1-4 OLEDs, encoder and/or buttons)
  • Availability: 7
  • Price: 6
  • populated with 4xOLED: 25 (1 available). Looks a bit dusty, but screen protection still on :sunglasses:

 

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  • AOUT4 MAX525-based AOUT, four channels
  • Availability: 6
  • Price: 5

 

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  • AIN4 protection/scaling circuit interfacing to a 3V MCU, four channels
  • Availability: 8
  • Price: 5

 

 

Edited by latigid on
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  • 2 weeks later...
  • 3 weeks later...

0204 is just the "wire link" resistor package. Notice one of the pads is connected to the encoder body, so bridging the TS parts as drawn as a "resistor missing a side" with wire will connect the metal surface to the DIN chain. Then something like a metal washer or custom CNC part can be connected to the encoder body using the thread/nut/washer.

It was done like this so that the TS functions can be separate from the encoders if needed, and also that the metal surface can be "processed."

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  • 3 weeks later...

Just follow the normal LCD setup by defining the desired number of displays through the bootloader app. I think the first 8 are still selected by J15, but I'm sure you could configure 64 lines using the Disp Driver CS if wanted.

It may be useful to power the driver at +5V if the OLEDs are locally regulated. 

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13 minutes ago, latigid on said:

Just follow the normal LCD setup by defining the desired number of displays through the bootloader app. I think the first 8 are still selected by J15, but I'm sure you could configure 64 lines using the Disp Driver CS if wanted.

It may be useful to power the driver at +5V if the OLEDs are locally regulated. 

ok cs0-7 directly from core, the others then from display-driver - i think i will plug Display 0-7 then in J15B. and the  display driver with that mirrored cable on J15A then... (may 3.3 5V problems accour? see my last sentence below)

 

hmm what about J9 - for what is that? should that be a output or a input? i dont measure voltage there... do i have to connect to core? anwhere?

 

do you have wired already displays with that pcb? , a photo additional to wiki - would be helpful: http://wiki.midibox.org/doku.php?id=display_driver

what i see, i have to paralell wire 8 displays per 2x5 socket, and single wire the cs coming from the 2x5 socket,

the ground i can take from the 2x5 socket,

the +Potential  (in your shematic its 5V) i dont found... maybe that J9? on the 2x5 i dont found that 5vdc+. ....

by the way in this document: http://ucapps.de/mbhp/mbhp_lcd_ssd1306_single_mios32.pdf the display is connected via 3.3V, in your diagram it is on +5V

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Just now, Phatline said:

hmm what about J9 - for what is that? should that be a output or a input? i dont measure voltage there... do i have to connect to core? anwhere?

Sorry for missing this; J9 is the power supply if you would like to supply it through the J1-8 headers. It's separate from the 3v3 supply.

 

Just now, Phatline said:

do you have wired already displays with that pcb? , a photo additional to wiki - would be helpful: http://wiki.midibox.org/doku.php?id=display_driver

Here is the correct wiring (a bit messy)

fetch.php?w=600&tok=57ca86&media=dispdri

 

 

Just now, Phatline said:

what i see, i have to paralell wire 8 displays per 2x5 socket, and single wire the cs coming from the 2x5 socket,

Yes. The SPI data/clock/#DC can be shared between a few OLEDs (e.g. ELO or SCS-OLED) with a separate CS to each display.

 

Just now, Phatline said:

the ground i can take from the 2x5 socket,

the +Potential  (in your shematic its 5V) i dont found... maybe that J9? on the 2x5 i dont found that 5vdc+. ....

Or you can power the displays directly from your PSU. Depends on the current etc.

 

Just now, Phatline said:

by the way in this document: http://ucapps.de/mbhp/mbhp_lcd_ssd1306_single_mios32.pdf the display is connected via 3.3V, in your diagram it is on +5V

I think I did it this way as Core J10B is wired to 3v3 (3v0 on a Disco board). Generally the logic levels shouldn't be mixed. It's just a matter of how the display expects its data. 

 

 

 

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Just a quick note: The OLEDs I received are able to run at 5V instead of 3.3V. They are also brighter at 5V. So you might not need a 3.3V reg. If you use an external 5V power supply for your cores, you are able to power them directly through this. 

I'm pretty sure this is valid for other OLEDs too. I order mine at aliexpress for about $3 / pc.

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