Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - Peter Cyriax

Pages: [1]
1
TFTs / Re: No Backlighting
« on: December 28, 2015, 04:20:05 PM »
Hi,

Sounds like good news. In the meantime I've ordered the components to try to make those modes.


Happy Christmas


Peter

2
TFTs / Re: No Backlighting
« on: December 18, 2015, 02:17:17 PM »
Hi Paul,


Thanks... I've ordered that.


But I'm still very worried that I may damage the controller while trying to replace those components.

Do you make a controller that will drive these High Brightness/Sunlight readable sisplays without user modificataion?



Cheers




Peter

3
TFTs / Re: No Backlighting
« on: December 18, 2015, 07:43:54 AM »
Hi,


In the short term, just to get things up and running, I can rig up any voltage I want (within reason), and I'd much prefer that route until I have the controller + display actually working.

So:
 1. Can an unmodified  NHD-4.3-480272MF-34 control a NHD-4.3-480272EF-ASXN#-T or NHD-4.3-480272EF-ASXV# display (I have one of each)?
 2. If so, what do I have to do to make it work? Possibly apply a different voltage to pin the of the J3 connector?
 3. If not, do you have an alternative controller that can (without user modification) controll these screens

Also... what power rating is required for the 7.8 Ohm resistor?


Thanks



Peter

4
TFTs / Re: No Backlighting
« on: December 17, 2015, 12:02:50 PM »
Hi Saurabh,

That looks quite straightforward in principal, though where my old fingures are ateady enough for such a delicate operation is another matter. We'll see - thanks.





Peter

5
TFTs / Re: Connecting NHD-4.3-480272MF-34
« on: December 17, 2015, 12:00:12 PM »
Hi Saurabh,


That makes sense - thanks.



Peter

6
TFTs / No Backlighting
« on: December 17, 2015, 03:52:04 AM »
Hi,

I'm planning to run a Hight Brightness display via a NHD-4.3-480272MF-34 controller using a 12v battery power source. That means I'd have to jump through all sorts of hoops to get  24 v  for the backlighting.

So what happens it I just ignore the backlighting?

1. Will the display still work?
2. Will I simply get a black background?
3. Provided I use bright colours for the foreground colours will the display still be readable?


Thanks



Peter

7
TFTs / Connecting NHD-4.3-480272MF-34
« on: December 16, 2015, 09:11:42 AM »
Hi,

My display and controller just arrived: NHD-4.3-480272EF-ASXV#-T + NHD-4.3-480272MF-34.

Now I have to connect them to an Arduino Due.

"We also recommend" for the controller suggests a NHD-FFC20-1 FFC adapter - but this is 20 pin 1.mm to 2.54 mm adaptyer according to the annotation, though the pic looks like 0.5 mm to 2.54, and the J3 output of the NHD-4.3-480272MF-34. is 34 pin 0.5 mm pitch.

Can you please tell me the correct part numbers - adapter board + FFC ribbon to connect the controller to the adapter board.


Thanks



Peter


8
Customer Projects / Re: Racing Yacht Instrument System
« on: December 14, 2015, 09:27:49 AM »
Hi Saurabh,


Thanks... I have ordered a 4.3" Sunlight Readable screen plus controller and we'll see how we get on. We can develop using 4.3" to start with.

I also ordered the varient with a resistive touchscreen (not quite as bright, I know) to see how easily I can program that to eslect the screen format to display: but I was planning to select the displays via software talking to the central processor, so that will be a bonus if it works. We won't know whether we need the MVA verion until we put the prototype onto an actual yacht.

Yes - I didn't think the complete TFT unit would be waterproof, but it is important that the viewable screen area should be - I can't cover that with carbon... I'm concerned that if we have to put a transparent front on the waterproof enclosure we'll lose lumiance and get a lot of glare.

I assume connecting the screen to the controller ( NHD-7.0-800480EF-34 Controller Board ) is pretty straight forward. I'm guessing the -34 controller will still work with the display that does not have a touchscreen. Hopefully I'll be able to find enought documentation to connect the controller to an Arduino Due and the Arduino libraries for a standard SD1963 will work.

Not first time, of course - that never happens, lol.

Getting the screens to work is a small part of the total project: if you realease the 7" sunlight viewable displays any time next year that will probably be soon enough.


Cheers


Peter





Peter

9
Customer Projects / Racing Yacht Instrument System
« on: December 11, 2015, 12:47:15 PM »
Hi,


I'm starting work on a yacht racing instrument system.

Clearly we'll need some screens to display the output, which is typical "instrumentation" type display formats (humbers, dials graphs bars) with variable data being updated ay maybe 0.1 sec intervals.

The screens need to be reasonably robust, and the viewing surface impervious to salt water. We'll be putting them in custom carbon fibre waterproof enclosures. The will need to be viewed in bright sunlight at a typical distance of 6 - 15 feet and at angles of upto 45 degrees in the horisontal plane, but probably not more than 20 degrees in the vertical plane.

We do not however, need particulalrly accurate colour reproduction - just strong primary colours plus black and white at variable levels of intensity.

I'm guessing that right now my best bet would be the NHD-4.3-480272EF-ASXN# - sunlight readable (Luminance 1000 cd/m2) though the NHD-4.3-480272EF-ASXV# is nearly as bright (850 cd/m2) and has a better viewing angle.

Ideally we'd like to use 7" 800 x 480 displays but they only output 350 cd/m".  The new IPS TFT's look attractive, but again the luminence is low

So the questions are:
1. Are the Newhaven screens suitable?
2. Which is the best screen to use right now?
3. Is there any chance that suitable larger (7") screen will be available by the time we have all this working - in a year or so?

And assuming the response to those questions is positive, then:
4. What do we have to do to connect them to the rest of the system.?


Thanks



Cheers



Peter


Pages: [1]