Recent Posts

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1
Customer Projects / Re: Pachinko Counter Version 1
« Last post by CarlW on December 15, 2017, 07:54:17 PM »
Probably should mention what Newhaven product was used. ::)

NHD-4.3CTP-SHIELD-N


2
Customer Projects / Re: Pachinko Counter Version 1
« Last post by Paul_B on December 14, 2017, 08:21:12 AM »
Brilliant, thank you for sharing Carl! Can't wait to see version 2  ;)
3
Evaluation Tools / NHD-7.0CTP-CAPE use touch screen in portrait mode?
« Last post by Arnie on December 14, 2017, 02:30:15 AM »
Greetings,

I have here NHD-7.0CTP-CAPE with BeagleBone Black and the Ubuntu 14.03-3.8 image up and running ok. I can rotate the display in xorg.conf.d ebdev.conf to portrait mode, but the touchscreen is not rotated. This is regardless of the options set in xorg.conf.d evdev.conf. What could be wrong here?

evdev.conf:

Section "InputClass"
        Identifier "evdev touchscreen catchall"
        MatchIsTouchscreen "on"
        MatchDevicePath "/dev/input/event*"
        Driver "evdev"
#        Option "Rotate" "CCW"
#        Option "InvX"
#        Option "InvY"
#        Option "SwapAxes" "true"
#        Option "InvertX" "true"
#        Option "InvertY" "true"
#        Option "GrabDevice" "true"
EndSection

4
Customer Projects / Pachinko Counter Version 1
« Last post by CarlW on December 13, 2017, 07:16:33 PM »
This was a fun project for my hobby - pachinko.

The folks at the Newhaven Forum were helpful; thanks!

I'm excited to start on version 2 with the new shield and larger displays!
Think my pachinko counter shield will fit in between the new products with no modifications but have not tested.

The housings were 3D printed.

This project "keeps score" of a pachinko machines shots and winnings.

The side boxes are optional and are used for game artwork and have a LED ring inside.
The speaker fits on either side end cap.

https://youtu.be/IjlP6dGSasc





5
TFTs / Re: Touchscreen Defect on NHD-7.0CTP-CAPE-N
« Last post by Saurabh_B on December 13, 2017, 04:34:07 PM »
Hello,

I'm sorry to hear you're having an issue with this.
Would it be possible to contact us via. Email @ nhtech@newhavendisplay.com
6
TFTs / Touchscreen Defect on NHD-7.0CTP-CAPE-N
« Last post by Ives Soares de Oliveira on December 13, 2017, 02:30:08 PM »
We bought about 50 units of NHD-7.0CTP-CAPE-N capes for BeagleBone. We have tested about 15 units here and unfortunately, we have 4 units with a strange behavior.

The touchscreen's area, from the middle to the top, is not working. With an oscilloscope, I saw that when I touch this area, there isn't an INT signal.

Furthermore, I've read the FT5x06 registers and saw that there isn't a change on registers 0x03-0x06 when I touch the defect area. These registers should contain the X and Y coordinates.

Take a look at my i2cdump on the address range 0x00-0xff. At this moment I wasn't touching at any point of the touchscreen.


root@beaglebone:~# i2cdump -y -r 0x00-0xff 2 0x38
No size specified (using byte-data access)
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: 00 dc 93 51 bd aa a5 00 00 11 52 22 34 00 00 74    .??Q???..?R"4..t
10: 05 7f d3 00 00 49 22 11 74 00 00 2a cb c7 46 00    ???..I"?t..*??F.
20: 00 84 b8 61 df 00 00 53 08 5b 8c 00 00 d0 da ca    .??a?..S?[?..???
30: 3f 00 00 be f1 f5 eb 00 00 24 28 39 e7 00 00 00    ?..????..$(9?...
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
80: 19 3c df 00 06 a0 01 0a 0a 28 93 da db df db 9b    ?<?.?????(??????
90: e8 21 32 32 32 32 6e 32 40 1b e4 75 ae 62 f2 5c    ?!2222n2@??u?b?\
a0: ff 30 03 55 01 01 03 01 79 00 00 ce 5d 88 96 05    .0?U????y..?]???
b0: 87 05 e6 64 32 1e 7f cf d1 c9 bf 2d 64 80 27 1a    ???d2??????-d?'?
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
f0: 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00    ............?...


The TFT display is working properly but the touchscreen is not. The touchscreen stopped working after a while, I would say, 2 months. They were running 7 days 24 hours.

My NHD-7.0CTP-CAPE-N capes have the following text on the back: UL: E330731 0117.

We are running Embedded Linux (kernel 4.4) on these BeagleBones and we are using the edt_ft5x06 driver which can be found at the following link: https://raw.githubusercontent.com/beagleboard/linux/4.4/drivers/input/touchscreen/edt-ft5x06.c

Do you have any hint? Maybe I can send these units for your analysis and RMA. I'm worried because we have a lot units here to sell to my customers.
7
Character LCDs / Re: NHD-0216K1Z-NSW-BBW6L contrast problem
« Last post by bidbid21 on December 13, 2017, 02:56:25 AM »
The display is assembly on electronic card that is RFID Reader. This reader is powered by ethernet PoE. The supply of display is regulared by LD50 regulator + capacitor and zener diode (for protect)
The stikers on lcd display has browned because I think the chip on display heated.
I have measure the temperature of display after 1hour of use in real condition. I have got 38°celsius in touch display chip.
For tests, I have disassembly display (chip and LCD Cell) and i have reverse old LCD cell to new PCB and new LCD cell to old PCB
old LCD cell on new PCB (i noticed dead pixels
new LCD cell on old PCB
8
Character LCDs / Re: NHD-0216K1Z-NSW-BBW6L contrast problem
« Last post by Saurabh_B on December 12, 2017, 01:16:12 PM »
Can you give me more information about where the display is used?

I can see what you mean by the browning on the display, this leads me to believe that something is causing extreme heat build up on or near the display.
The low contrast stripes lead me to believe this might be a connection issue with the Zebra strips and the PCB.

Do you know if there is any dust entering the display or any liquids used near by? Another issue could be that the com/seg traces could be getting shorted and destroyed.
9
Character LCDs / Re: NHD-0216K1Z-NSW-BBW6L contrast problem
« Last post by bidbid21 on December 12, 2017, 09:23:20 AM »
Actually, the voltage of display is 5v(by 7805 regulator) and contrast 0.9v (by the tension divider bridge between 5v and ground)
I saw that the stikers on the chip has browned.
The display was use in building (ambient temperature)
burned stickers
display after set V0 to Ground
10
Character LCDs / Re: NHD-0216K1Z-NSW-BBW6L contrast problem
« Last post by Saurabh_B on December 12, 2017, 08:04:33 AM »
Would it be possible to send a picture of what you are seeing.

Also what temperature is the display used in, and what is the voltage on the display?
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