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Forum Index : Microcontroller and PC projects : uM2: PCB for 44-pin,40-pin TFT and USB

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centrex

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Joined: 13/11/2011
Location: Australia
Posts: 320
Posted: 04:52pm 02 Oct 2015
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Hi Peter

Have you done anymore testing of the board and what is the Arduino board that is plugged into the mother board.

Cliff
Cliff
 
matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10406
Posted: 10:12pm 02 Oct 2015
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  Quote  Have you done anymore testing of the board and what is the Arduino board that is plugged into the mother board.


The board is fully tested and works well. 40-pin TFT and SPI TFT all plug directly and work properly. The USB console using the PIC16F1455 also works very well. The wiring to use the PIC16F1455 to program the MX170 needs changing to match the latest code from Jean (Microblocks). I'll incorporate this change into the 64-pin version which I will send for fabrication in the next few days.

The shield is a general purpose Arduino I/O shield I got ages ago. Looking on ebay I can't quickly find an equivalent.

I'm currently playing using a SSD1963 with the RD pin enabled to allow reading of the graphics memory to allow read/modify/write type operations
 
centrex

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Joined: 13/11/2011
Location: Australia
Posts: 320
Posted: 10:15pm 06 Dec 2015
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Hi Peter
Just wondering what frequency do yo run the backlight led at.

Cliff
Cliff
 
WhiteWizzard
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Joined: 05/04/2013
Location: United Kingdom
Posts: 2948
Posted: 10:23pm 06 Dec 2015
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  centrex said  Just wondering what frequency do yo run the backlight led at.

For what its worth; I run my backlights at PWM 1000 to eliminate any flicker. This can be reduced to around 100 but then I noticed that some TFTs then flicker slightly at this frequency!! (and I am really sensitive to this)

The other thing to note is that if you are making a 'video' of your products, then the lower frequencies sometimes get picked up by the electronics in the camera device which then make for a 'poor' video

WW

 
centrex

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Joined: 13/11/2011
Location: Australia
Posts: 320
Posted: 10:38pm 06 Dec 2015
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Thanks WW
I am playing with one of Matherps boards and found that it all worked at 500hz OK.
I will keep playing.
Cliff
 
MicroBlocks

Guru

Joined: 12/05/2012
Location: Thailand
Posts: 2209
Posted: 01:46am 08 Dec 2015
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  matherp said  
  Quote  ....
The USB console using the PIC16F1455 also works very well. The wiring to use the PIC16F1455 to program the MX170 needs changing to match the latest code from Jean (Microblocks). I'll incorporate this change into the 64-pin version which I will send for fabrication in the next few days.
....

If you are using windows XP then you will need to have a driver .inf file with the right PID/VID information.
If you see a yellow triangle next to the device then you need to load the driver that is in this zip file.
It is just a standard driver from Microchip but then with the right USB device identifiers so that it can be found by Windows XP.

2015-12-08_114642_Microblocks_USB_Serial_Driver.zip
Microblocks. Build with logic.
 
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