Recent Posts

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1
Evaluation Tools / Re: NHD-4.3CTP-SHIELD-N
« Last post by Paul_B on August 22, 2017, 03:39:57 PM »
Hey Carl,

I went ahead and pulled the NHD-4.3CTP-SHIELD-N from stock and powered it with an Arduino UNO clone (NERO) from the lab.

All three sketches have been tested and verified to run properly on the Arduino UNO (see picture attached)


Can you please clarify how you are powering the Arduino UNO clone?

Have you been successful running the "Basics" Arduino examples (Blink.io)?

Thanks!



2
Evaluation Tools / Re: NHD-4.3CTP-SHIELD-N
« Last post by CarlW on August 22, 2017, 02:50:44 PM »
Still on the topic of this shield.

 ;)

I found an Arduino clone (NERO at Digikey) with a stronger 5V power regulator.
Doesn't get warm, really.

My issue is fitting my sketch into the space on the UNO. My sketch compiled to...
"Sketch uses 24772 bytes (76%) of program storage space. Maximum is 32256 bytes.
Global variables use 912 bytes (44%) of dynamic memory, leaving 1136 bytes for local variables. Maximum is 2048 bytes."
Thought it might work but no. Loads fine but crashes after a few seconds.

I also tried the library example sketch FT_App_Lift.
"Sketch uses 20844 bytes (64%) of program storage space. Maximum is 32256 bytes.
Global variables use 869 bytes (42%) of dynamic memory, leaving 1179 bytes for local variables. Maximum is 2048 bytes."
Doesn't work for me either. Loads fine but crashes after a few seconds.

Surprisingly, library example FT_App_Jackpot works.
"Sketch uses 21434 bytes (66%) of program storage space. Maximum is 32256 bytes.
Global variables use 1159 bytes (56%) of dynamic memory, leaving 889 bytes for local variables. Maximum is 2048 bytes."

All the sketches compile and run fine on the MEGA.

Where can I find a MEGA with a powerful 5V power supply?

Has anyone else had stability issues with library example sketches on an UNO?

3
Graphic LCDs / Re: NHD-C160100DiZ and Raspberry Pi
« Last post by Saurabh_B on August 21, 2017, 02:12:30 PM »
Hello Joel,

1. Yes the display will work at 100khz
2. The supply current is dependent on what the display is showing and how far you are using the voltage booster, it can use up to 1 mA of current when fully powered.
3. This display does require 2 capacitors. can you tell me if you have both connected the way they are shown on page 4 of the datasheet?
4. You can find example code for this display here: NHD-C160100DiZ
4
Hello Joel,

1. Yes the display will work at 100khz
2. The supply current is dependent on what the display is showing and how far you are using the voltage booster, it can use up to 1 mA of current when fully powered.
3. This display does require 2 capacitors. can you tell me if you have both connected the way they are shown on page 4 of the datasheet?
4. You can find example code for both of the displays here:
NHD-C0220BiZ
NHD-C160100DiZ
5
hello guys,
i need to know whether
1)Can lcd  be implemented with 100 kHtz?
2)Do supply current (Idd) need between 500 microA to 750microA to drive the lcd? since my supply voltage is 3.3 v but the current is less than 500microA?
3) As per the instructions i have connected the lcd  but i am not getting any display in lcd?in the setup i have used pull-up resistor as 10kohms and the capacitor is 1uF.
4) if you have any sample code which is implemented with i2c-dev than please share it.
4) if there any other suggestions,please provide for NHD-C160100Diz.
6
Graphic LCDs / Re: NHD-C160100DiZ and Raspberry Pi
« Last post by joel dey on August 21, 2017, 08:44:56 AM »
hello guys,
i need to know whether
1)Can lcd  be implemented with 100 kHtz?
2)Do supply current (Idd) need between 500 microA to 750microA to drive the lcd? since my supply voltage is 3.3 v but the current is less than 500microA?
3) As per the instructions i have connected the lcd and run the code, but i am not getting any display in lcd?in the setup i have used pull-up resistor as 10kohms and the capacitor is 1uF.
4) if there any other suggestions,please provide for NHD-C160100Diz.
7
Character LCDs / Re: NHD-C0216CiZ-FN-FBW-3V No ACK
« Last post by Saurabh_B on August 15, 2017, 08:26:40 AM »
Currently working on this via email with customer.
8
OLEDs / Re: spontaneous reverse mode with NHD-0420CW
« Last post by Saurabh_B on August 15, 2017, 08:25:30 AM »
The options that would allow you to remap the output would include the Entry Mode set as i mentioned in my previous post, along with the Set SEG Pins Hardware Configuration command on the OLED Command Set Table (RE = 1, SD = 1)

Attached is the layout for the COM and SEG lines on our OLED.
The Segment Remap command is better explained on Pages 33 & 34 of the controller datasheet (http://www.newhavendisplay.com/app_notes/US2066.pdf)
9
OLEDs / Re: spontaneous reverse mode with NHD-0420CW
« Last post by jcasey on August 14, 2017, 02:06:13 PM »
I can easily modify the init sequence.   Can you recommend some specific strings of characters to add?
I originally used the init sequence recommended in the manual -- the reversal is not supposed to occur on powerup.
I did find that the one appended command i showed solved the problem I originally had (occasional boot up reversed).
Now it appears to always come up reversed...again, this is not supposed to happen.

However, if I can change the init sequence, I'm happy to.   If there are several ways it can become corrupted backwards, what are ALL the commands to make it right-side up and left to right?
I find the manual to be a bit obtuse, and clearly I missed some items.
10
OLEDs / Re: spontaneous reverse mode with NHD-0420CW
« Last post by Saurabh_B on August 14, 2017, 09:57:30 AM »
Hello,

Would it be possible to add another set of commands to your initialization?
There are a few ways this display allows you to switch the text so that you can get reversed text or even upside down.

This is often controlled by the Entry Mode Set (extended [RE = 1]).

If the display is reversed (Characters coming from right to left, i would recommend possibly reversing the Segments (BDS = 0)

You can find more information about this on the controller datasheet pages 26, 33 & 35.
Datasheet Link: http://www.newhavendisplay.com/app_notes/US2066.pdf
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