Open GoogleCodeExporter opened 8 years ago
What about pin 20 (A0) and pin 21 (reset)?
Without connecting these pins, it will not work.
Note: U8glib only support 4-wire SPI
Original comment by olikr...@gmail.com
on 1 Mar 2015 at 7:22
Ok, connect it..
My scheme now:
13 pin arduino = 17 pin display (sck)
11 pin arduino = 14 pin display (mosi)
10 pin arduino = 22 pin display (cs)
9 pin arduino = 20 pin display (a0)
8 pin arduino = 21 pin display (reset)
Display on 4-wire spi mode:
23 BM0 0v
24 BM1 0v
10 DB7 +3.3v
11 DB6 0v
When the display flashes twice and then do not show anything...
Original comment by shu...@gmail.com
on 1 Mar 2015 at 1:01
I record video issue https://www.youtube.com/watch?v=pJKr6ZJgGBM
Original comment by shu...@gmail.com
on 1 Mar 2015 at 1:20
Did you connect everything for 4-wire SPI?
Reference:
http://www.buydisplay.com/download/interfacing/ERC24064-1_Interfacing.pdf
See "The Serial 4line SPI(S8) Reference Example"
Especially, consider all the caps and resistors.
Original comment by olikr...@gmail.com
on 1 Mar 2015 at 2:28
Yes, a connect all for 4-wire spi.
And on wire BIAS cap 0.1uf
Original comment by shu...@gmail.com
on 1 Mar 2015 at 2:48
What about the two 4.7uF caps? and the 10M resistor?
Original comment by olikr...@gmail.com
on 1 Mar 2015 at 2:53
yes, two caps 4.7uf (polar
https://www.baudaeletronica.com.br/media/catalog/product/cache/1/image/363x/040e
c09b1e35df139433887a97daa66f/4/_/4.7uf.jpg)
yes 10m resistor on VLCD pin ( 2 x 4.7M )
Original comment by shu...@gmail.com
on 1 Mar 2015 at 3:05
Yes 4.7uF caps on VB pins ( polar caps)
And 10M resistor on VLCD pin (2 x 4.7M)
Original comment by shu...@gmail.com
on 1 Mar 2015 at 3:09
Mostly this kind of caps are not working. You must use a ceramic type for the
4.7uF (X7R usually works).
All in all it is difficult for me to support here. This is only a software
project, not a hardware forum. I did my very best to support you, but finally,
you have to figure out the setup together with your hardware provider. Maybe it
is better to contact the person who sold the display to you.
Original comment by olikr...@gmail.com
on 1 Mar 2015 at 3:10
Thank you very much for your support and quick answers!
I soldering capacitors ...
Original comment by shu...@gmail.com
on 1 Mar 2015 at 3:14
For my own setup: It took me a good amount of time to fix all issues with the
hardware. Gallery page:
http://wiki.u8glib.googlecode.com/hg/otherpic/u8glib_uc1608_240x64.jpg
Original comment by olikr...@gmail.com
on 1 Mar 2015 at 3:18
I saw your installation from the gallery...
I resolder ceramic capacitors, but it did not help :-(
Original comment by shu...@gmail.com
on 1 Mar 2015 at 3:36
Maybe you can do the testing without backlight or at least with very reduced
backlight. Somehow it looks to me, that the power supply is not good enough.
Voltage may drop, which will lead to a reset of the controller. Note: Arduinos
usually do not provide enough current for the backlight.
Original comment by olikr...@gmail.com
on 1 Mar 2015 at 3:43
Original issue reported on code.google.com by
shu...@gmail.com
on 1 Mar 2015 at 12:46