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Messages - vitya

1
DirtyPCBs support /
Just to follow up: The boards arrived, and are perfect! Just the way I wanted them.
Thanks for this great service!

Sent from my ONEPLUS A3003 using Tapatalk
3
DirtyPCBs support / Rendered image of panelized PCB
Hi,
I just created a panelized PCB in Eagle, panelized it as two of them fit the 10x10 PCB. When the gerber files are uploaded I can see that in the rendered image only one of them is blue (my choice of PCB color). See screenshot below:

[attachment=0]
I understand that render images are only for reference, but so far in all my previous designs they worked perfectly, so I decided to run it by you before placing the order.

So my question is: Do you think it is OK to ignore this problem and go ahead with the order?

Thanks in advance!
4
USB serial LCD backpack / Re: Fully built mini LCD backpack not working with test app
[quote author="ian"]Hi vitya,

Unfortunately you are correct, the test app was only designed for the biggest version of the LCD backpack.[/quote]

Hmmmm, OK, but then can you point me to some documentation that does apply to this version? Otherwise I'm stuck.... I have never done any USB-Serial projects and I planned to learn it from this :)

thanks!
vitya
5
USB serial LCD backpack / Fully built mini LCD backpack not working with test app
Hi,
Finally, I got around to gather the parts and build the USB LCD backpack already mentioned here: viewtopic.php?f=60&t=3862

When I connected it to the PC (Windows 7 Ultimate 64 bit) it recognized the new hardware and installed all the necessary files automatically from Windows Update. I now have 2 new devices (USB Serial converter and something else I can't remember) working properly in Device Manager. It also prompted me to restart the computer, which I did.

With the test applicaiton (USB_LCD_Backpack_V03.exe) I can switch the backlight on and off, but nothing else. It doesn't give me any error messages either. I can set the backlight and the contrast with the pots on the board, although I have to mention, that I had to add a jumper wire to the board connecting the unconnected end of the pot that controls contrast to GND to make it work (although I don't think this is the problem).

The LCD shows that familiar screen with black blocks until halfway, which usually means it's not properly initialized.

I have double checked the soldering and each wire between the FT232 and the LCD and found no shorts and no missing ones.

I suspect the test app is not designed for this version of the board. Any idea, anybody?

thanks!

vitya
7
USB serial LCD backpack / Re: Schematics and board layout needed
Thanks for the quick reply, but I don't think it's the same. I also found this version, but when you look at the board closely you will find some differences, e.g. on the board there is no place for Q1 (the xtal).
8
USB serial LCD backpack / Schematics and board layout needed
HI All,

I just received my micro usb lcd backpack and when I was about to start gathering/soldering the parts in I found that there is no documentation on this particular version of it on the site. So I am stuck at the moment.

I can figure out some of the parts, like the status LEDs, filter capacitors, but I am not sure about the rest. Since this is the only panel I got, I don't want to mess it up.

If anyone has a parts layout or list, I would appreciate putting me in the right direction.

For reference, I attached a quick snap of the PCB I received.
Front: [attachment=1]
Back: [attachment=0]

Thanks for all the help!

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