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Messages - Saurabh_B

Pages: 1 2 3 [4] 5 6 ... 26
TFTs / Re: Rotate the display upsidedown (180)
« on: September 15, 2017, 08:12:14 AM »
What is the part number of the display you are using.

It would help to look at the driver to see if there are any pins that let you change the scan direction (up/down & left/right)

OLEDs / Re: Characters Mirrored on NHD-0420CW Display
« on: September 13, 2017, 03:53:40 PM »
From the Photo it looks like the segments are going backwards.

Can you try sending a 0x2A (Function Set, RE = 1)
followed by the Entry mode set(0b000001XY) where y could be a 0 or 1, this should stop the mirroring on the display.

OLEDs / Re: Characters Mirrored on NHD-0420CW Display
« on: September 13, 2017, 09:05:59 AM »
Would it be possible to get a picture of what you are seeing?

Hello Nathan,

You can find an example for this display here:

Can you tell me what interface you plan to use and do you have a schematic for how you are connecting the display?

OLEDs / Re: LCD Dev Board and NHD-1.69-160128UGC3
« on: September 05, 2017, 07:58:52 AM »
The Code loaded into the NHDev Development board is written for 6800 mode Parallel Interface.
It will not work in serial.

New Product Wishlists / Re: Display, PC simulator
« on: September 01, 2017, 08:09:19 AM »

Unfortunately we do not have any LCD simulators.

Graphic LCDs / Re: NHD-C160100DiZ and Raspberry Pi
« on: August 29, 2017, 02:33:40 PM »

The 200A does seem low. Would it be possible to tell me what the voltage measures at the VOUT pin?
The capacitors are part of a voltage boosting circuit which will generate the voltage required to drive the LCD, the current draw should increase after having sent the initialization sequence.

Can you tell me if you are sending any pixel data to the display after the initialization to see points on the graph?

Finally some slave devices do tend to clash with the lcd when use don the same I2C bus, I would recommend having the display working by itself first then adding more devices to the bus for final testing. If there is another device that uses the same slave address, the display will not work as intended.

Evaluation Tools / Re: NHD-TFT40 PWM pin
« on: August 28, 2017, 03:37:40 PM »
How are you tying this to the 1.8" TFT?

There are multiple cathodes for the backlight on this display. Do you have a schematic for how this is setup?

Evaluation Tools / Re: NHD-TFT40 PWM pin
« on: August 28, 2017, 02:07:03 PM »

Can you tell me what pins are drawing current?

The display VDD itself will still be powered without the backlight, for this you would need to trigger the display's standby mode. (DISPOFF)
After triggering this, you will still get current draw for the DC/DC converter used to boost the voltage. (5V input)

The PWM signal only controls the brightness of the backlight. The backlight isn't tied to any circuits on the display that would cause it to shut down or pause.
The PWM signal doesn't stop the current drain for the backlight voltage booster either, to stop this you would need to shut down the power being provided to the +5V input of the NHD-TFT40

OLEDs / Re: Supply voltage for KZW series OLED
« on: August 25, 2017, 08:09:31 AM »
Awesome, please let us know how the project works.

OLEDs / Re: Supply voltage for KZW series OLED
« on: August 24, 2017, 08:38:39 AM »
Unfortunately we do not have datasheets on the change in brightness.
However we can see that its half to 2/3 as bright as a 5V, this would also be dependent on the color.

Graphic LCDs / Re: Create a fun car entertainment system
« on: August 24, 2017, 08:13:17 AM »
Hello Jack,

Unfortunately we have not heard of nextion in the past, I'm not really sure how their displays will work.
However i will mention that most standard LCD panels have a standard operating temperature of -20C to 70C & a storage of -30 to 80C.

TFTs / Re: Operating Temperature range NHD-10.1-1024600AF-LSXV#-CTP
« on: August 23, 2017, 04:07:41 PM »

When operating an LCD close to the lower end of its operating temperature, the display itself will start lagging.
The Rise and Fall times for pixels will start becoming larger, and you will notice that switching screens will take a little bit more time.
At the lower end of the operating range you also run the risk of damaging the LCD due to the liquid crystals freezing.
If used in the cold i would recommend placing a heating element behind or inside the same enclosure as the display to keep its temperature maintained.

On the opposite end, when you run the display above the recommended high operating temperature you run the risk of permanently causing dark spots to appear on the screen.
At or around 50C this shouldn't be a problem. However if you do go above this you can start seeing dark spots appear and if it continues to operate, the spots will become permanent.

The 10.1" TFTs are a new product for us and we do not have any extended range panels available as of yet.

OLEDs / Re: Supply voltage for KZW series OLED
« on: August 23, 2017, 10:50:05 AM »

The standard character OLED displays can be powered via 3.3V, however please note that the brightness of the OLED panels will be dimmer than what is optimal.

You would need to apply 3.3V to the VDD, and have a logic voltage of 3.3V as well.

Graphic LCDs / Re: NHD-C160100DiZ and Raspberry Pi
« 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

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